Review
Pharmacological Uses and Health Benefits of Ginger (Zingiber officinale) in Traditional Asian and Ancient Chinese Medicine, and Modern Practice
Mohamad Hesam SHAHRAJABIAN
1,2, Wenli SUN
1,2, Qi CHENG
1,2*
1Chinese Academy of Agricultural Sciences, Biotechnology Research Institute, Beijing 100081, China
2Qi Institute, Nitroegn Fixation Laboratory, Building C4, No. 555 Chuangye County, Jiaxing 314000, Zhejiang, China; [email protected]; [email protected]; [email protected] (*corresponding author)
Abstract
Ginger (Zingiber officinale) has been used as a spice and a medicine for over 200 years in traditional Chinese medicine.
Ginger is an important plant with several medicinal and nutritional values used in Asian and Chinese tradition medicine.
Ginger and its general compounds such as Fe, Mg, Ca, vitamin C, flavonoids, phenolic compounds (gingerdiol, gingerol, gingerdione and shogaols), sesquiterpenes, paradols has long been used as an herbal medicine to treat various symptoms including vomiting, pain, cold symptoms and it has been shown to have anti-inflammatory, anti-apoptotic, anti-tumor activities, anti-pyretic, anti-platelet, anti-tumourigenic, anti-hyperglycaemic, antioxidant anti-diabetic, anti-clotting and analgesic properties, cardiotonic, cytotoxic. It has been widely used for arthritis, cramps, sprains, sore throats, rheumatism, muscular aches, pains, vomiting, constipation, indigestion, hypertension, dementia, fever and infectious diseases. Ginger leaves have also been used for food flavouring and Asian traditional medicine especially in China. Ginger oil also used as food flavouring agent in soft drink, as spices in bakery products, in confectionary items, pickles, sauces and as a preservatives. Ginger is available in three forms, namely fresh root ginger, preserved ginger and dried ginger. The pharmacological activities of ginger were mainly attributed to its active phytocompounds 6-gingerol, 6-shogaol, zingerone beside other phenolics and flavonoids.
Gingerol and shogaol in particular, is known to have anti-oxidant and anti-inflammatory properties. In both traditional Chinese medicine, and modern China, Ginger is used in about half of all herbal prescriptions. Traditional medicinal plants are often cheaper, locally available and easily consumable raw and as simple medicinal preparations. The obtained findings suggest potential of ginger extract as an additive in the food and pharmaceutical industries.
Keywords: ginger; modern medicine; pharmacological science; traditional Chinese medicine
AcademicPres Notulae Scientia Biologicae
Print ISSN 2067-3205; Electronic 2067-3264 Not Sci Biol, 2019, 11(3):309-319. DOI: 10.15835/nsb11310419
Introduction
Ginger occurrence, cultivation, chemical constituents, nutrient composition and chemical composition
Traditionally, Chinese medicine includes herbal medicines and acupuncture (Akinyemi et al., 2016;
Shahrajabian et al., 2018; Ogbaji et al., 2018; Shahrajabian et al., 2019a,b,c,d,e; Shahrajabian et al., 2020). Zingiber officinale is a member of the Zingiberaceae plant family, native to East and southern Asia, consisting of 49 genera and 1300 species, 80-90 of which are Zingiber. Its generic name Zingiber is derived from the Greek zingiberis, which
comes from the Sanskrit name of the spice, singabera; the Latin name, Zingiber, means shaped like a horn and refers to the roots, which resemble a deer’s antlers (Sharma et al., 2017). The plant is known as Sringavera in Sanskrit (Vasala, 2004). Ginger (Zingiber officinale Roscoe.) has a long history of being used as a medicine and herbal since ancient time and had been used as an important cooking spice throughout the world (Nour et al., 2017). It is a plant that is used in folk medicine from south-east Asia, and in Greco- Roman traditions, Brazil, Australia, Africa, China, India, Bangladesh, Taiwan, Mexico, Japan, Jamaica, the India, the Middle East and parts of the United Sates also cultivate the rhizomes for medicinal purpose (Langner et al., 1998;
Blumenthal et al., 2000; Sekiwa et al., 2000; Yadav et al., 2016). El-Sayed and Moustafa (2016) reported that ginger rhizome is widely used as a spice or condiment. For
Received: 07 Jan 2019. Received in revised form: 19 Aug 2019. Accepted: 13 Sep 2019. Published online: 30 Sep 2019.
Shahrajabian MH et al / Not Sci Biol, 2019, 11(3):309-319
officinale), Jamaican ginger - (Zingiber officinale), Chinese ginger - (Asarum splendens), Australian ginger - (Alpinia caerulea), Nigerian ginger - (Zingiber officinale white and yellow variety), Japanese ginger - (Zingiber mioga), Indonesian ginger - (Alpinia galangal), and Hawaiian Island - (Zingiber zerumbet) (Sandeep, 2017). Common names of Ginger in different countries are, Chinese: Geung, Cook Islands: Kopakai, English: Ginger, Fiji: Cagolaya ni vavalagi, Hawaiian: Awapuhi Pake, India: Adrak and Inchi, Japan:
Shoga, Java: San gurng, Gung Guung, San geong, Atjuga, Niue: Poloi, Solomon Islands: Papasa, Spanish: Jengibre, Thailand: Khing, Vietnamese: Gung. Black ginger, the rhizome of Kaempferia parviflora (Zingiberaceae), has traditionally been used as food and a folk medicine for one thousand year in Asian traditional medicine especially in Thailand. The dried rhizome is pulverized and used as tea bags, while fresh one is utilized to brew wine. As dietary supplements, it has been made into various preparations such as medicinal liquor or liquor plus honey, pills, capsules and tablets. It has been claimed that black ginger is appropriate to cure allergy, asthma, impotence, gout, diarrhoea, dysentery, peptic ulcer and diabetes (Toda et al., 2016). Other notable member of this family (Zingiberacea) is turmeric otherwise called red ginger (Curcuma longa) (Akinyemi et al., 2015). It is a rhizomatous herbaceous perennial plant, in the ginger family, employed as a dye source food colorant due to its characteristics yellow colour (Chan et al., 2009).Ginger is a warm-season crop adapted for growth in tropical and subtropical regions. Best growth occurs under moist conditions and temperatures of 25-28
°C. Growth efficiency declines with temperatures above 30
°C and below 24 °C. Ginger grows well in full sun.
Vegetative growth is promoted with long day lengths, and rhizome enlargement is promoted under shorter day lengths. Ideal pH is 5.5-6.5 and it requires a deep (25-40 cm), rock-free, sandy loam soil, high in organic matter with adequate drainage that allows for proper hilling of the crop.
Ginger is usually available in three different forms: 1) Fresh (green) root ginger, 2) Preserved ginger in brine or syrup, 3) Dried ginger spice. Fresh ginger is usually consumed in the area where it is produced, although it is possible to transport fresh roots internationally. Both mature and immature rhizomes are consumed as a fresh vegetable. Preserved ginger is only made from immature rhizomes. Most preserved ginger is exported; Hong Kong, China and Australia are the major producers of preserved ginger and dominate the world market. Dried ginger spice is produced from the mature rhizome. As the rhizome matures the flavour and aroma become much stronger. Dried ginger is exported, usually in large pieces which are ground into a spice in the country of destination. Dried ginger can be ground and used directly as a spice and also for the extraction of ginger oil and ginger oleoresin. The main area under ginger covering is related to Nigeria 56.23% of the total global area followed by India (23.6%), China (4.47%), Indonesia (3.37%), and Bangladesh (2.32%) (Dhanik et al., 2017). Top ten Ginger producing country of the world has been shown in Table 1.
The nutritional composition of Ginger is shown in Table 2; nutritional profile is presented in Table 3 and the active chemical constituents in shown in Table 4.
centuries has been an important ingredient in traditional Chinese medicine, Ayurvedic, and Unani-tibb herbal medicines for the treatment of different diseases (Willetts et al., 2003; Ali et al., 2008; Memudu et al., 2012). Zingiber officinale was also one of the first oriental spices to be grown to the Europeans, it was introduced to northern Europe by the Romans who got it from Arab traders and was one of the most popular spices in the Middle Ages (Kala et al., 2016). Alakali et al. (2009) also mentioned that ginger was one of the earliest oriental species known in Europe in the 9th century, in the 13th century, it was introduced to East Africa by the Arabs. In West African and other parts of the tropics, it was introduced by the Portuguese in the 16th century (Kochhar, 1981). The spice was known in Germany and France in the ninth century and in England in 10th century for its medicinal properties (Yadav et al., 2016).
Elzebroek and Wind (2008) found that Marco Polo, introduced to ginger while visiting China and Sumatra in the 13th century, transported some to Europe. They have also discussed how the cultivation of ginger in Mexico was initiated by the Spaniard, Francesco de Mendoza. In China, dried Ginger, known as Gan-jiang is mentioned in the earliest of herbals, She Nung Ben Cao Jing, attributed to Emperor Shen Nung (almost 2000 BC). Chinese records dating from 4th century BC indicate that Ginger was used to treat numerous conditions including stomach ache, diarrhea, nausea, cholera, henorrhage, rheumatism, and toothaches. Not only in traditional Chinese medicine, but also in modern China, Ginger is used in about half of all herbal prescriptions, because of its ability to act as messenger, servant and guide herb that brings other herbal medicines to the site where they are needed (Afzal et al., 2001). Ginger cultivation back about 3000 years ago in India, and it remains an integral part of Indian cuisine where it is commonly used in many popular dishes (Daily et al., 2015). Lister (2003) revealed that the ginger plant has a long history of cultivation known to originate in China and it was one of the most parts of Chinese traditional medicine, and then spread to India, Southeast Asia, West Africa and the Caribbean. In Korea, ginger has been used to season foods for the last 1000 years approximately (Daily et al., 2015). Sliced ginger with sugar added is used to make tea, prickled ginger slices (Gari) are frequently used a condiment in Japan, and ginger is commonly used to flavour cookies and cakes in Western countries.
Zingiber officinale Roscoe classification is Kingdom:
Plantae-plants, Subkingdom: Tracheobionta-vascular plants, Superdivision: Spermatophyta-seed plants, Division:
Magnoliophyta-flowering plants, Class: Liliopsida- Monocotyledons, Subclass: Zingiberidae, Order:
Zingiberales, Family: Zingiberaceae- Ginger family, Genus:
Zingiber P. Mill - Ginger, Species: Zingiber officinale Roscoe- Garden ginger. Red Ginger (Z. officinale var. rubra) is a variance of the Zingiber officinale species cultivated in Indonesia and Malaysia. Moreover, having gingerols and shogaols, it is loaded with anthocyanin and tannin in its root bark. Traditionally, it is used in species, syrup and as remedy for rheumatism, osteoporosis, asthma and cough.
Some of the country grows with variation in species viz:
Indian, Nepal, Bangladesh, Sri Lanka ginger - (Zingiber
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Table 2. Nutritional composition of Ginger (per 100 g) (Sandeep, 2017)
Constituent Value
Moisture 15.02±0.04
Protein (g) 5.087±0.09 (5.98)
Fat (g) 3.72±0.03 (4.37)
Insoluble fibre (%) 23.5±0.04 (30.0)
Soluble fibre (%( 25.5±0.04 (30.0)
Carbohydrate (g) 38.35±0.1
Vitamin C (mg) 9.33±0.08 (10.97)
Total carotenoids (mg) 79±0.2 (92.96)
Ash (g) 3.85±0.61 (4.53)
Calcium (mg) 88.4±0.97 (104.02)
Phosphorous (mg) 174±1.2 (204.75)
Iron (mg) 8.0±0.2 (9.41)
Zinc (mg) 0.92±0 (1.08)
Copper (mg) 0.545±0.002 (0.641)
Manganese (mg) 9.13±0.01(10.74)
Chromium (µg) 70±0 (83.37)
All value in this table represent the mean ± SD (n=4). Figures in the parenthesis represent the dry weight values (Shirin Adel and Prakash, 2010) Table 3. Nutritional profile of Ginger (100 g) (Singh et al., 2017)
Types of nutrient Examples of nutrient Amount
Protein ---- 1.8 g
Water ---- 78.9 g
Phyto-sterols ---- 15 mg
Total Carbohydrate 18 g
Carbohydrates Dietary Fibre 2 g
Sugar 1.7 g
Total Fat 750 mg
Saturated Fat 203 mg
Fats and Fatty acids Monounsaturated Fat 154 mg
Polyunsaturated Fat 154 mg
Omega-3 Fatty Acids 34 mg
Omega-6 Fatty Acids 120 mg
Vitamin C 5 mg
Vitamin E 260 mcg
Vitamin K 0.1 mcg
Thiamin 25 mcg
Vitamins Riboflavin 34 mcg
Niacin 750 mcg
Vitamin B6 160 mcg
Folic acid 11 mcg
Pantothenic Acid 203 mcg
Choline 28.8 mg
Calcium 16 mg
Iron 600 mcg
Magnesium 43 mg
Phosphorous 34 mg
Minerals Potassium 415 mg
Sodium 13 mg
Zinc 340 mcg
Copper 226 mcg
Manganese 229 mcg
Selenium 0.7 mcg
Table 1. Top ten Ginger producing country of the world (Dhanik et al., 2017)
No. Country Production (Tonnes)
1 India 683000
2 China 425000
3 Nepal 235033
4 Indonesia 232669
5 Nigeria 160000
6 Thailand 140000
7 Bangladesh 69000
8 Japan 57835
9 Cameroon 46350
10 Philippines 28216
Shahrajabian MH et al / Not Sci Biol, 2019, 11(3):309-319
Minerals content of ginger for ginger root (Ground) consists of calcium (114 mg per 100 g), iron (19.8 mg per 100 g), magnesium (214 mg per 100 g), manganese (33.3 mg per 100 g), phosphorus (168 mg per 100 g), potassium (1320 mg per 100 g), sodium (27 mg per 100 g), and zinc (3.64 mg per 100 g), and minerals contents for ginger root (raw) are calcium (16 mg per 100 g), iron (0.6 mg per 100 g), magnesium (43 mg per 100 g), phosphorus (34 mg per 100 g), potassium (415 mg per 100 g), sodium (13 mg per 100 g), and zinc (0.34 mg per 100 g) (USDA, 2013). It was found that ginger contained 1.5%-3% essential oil, 2-12%
fixed oil, 40-70% starch, 6-20% protein, 3-8% fibre, 8% ash, 9-12% water, pungent principles, other saccharides, cellulose, colouring matter and trace minerals (Chan et al., 2009).
Ginger is called different names in different parts of the world such as Zingiberis rhizome, Shen jiany, Cochin, Asia ginger, Africa ginger and Jamaican ginger (Peter, 2000).
Kala et al. (2016) stated that ginger oil also used as food flavouring agent in soft drink, as spices in bakery products, in confectionary items, pickles, sauces and as a preservatives.
There is variability in the compounding of ginger products.
The relative composition in the extraction of ginger is determined by species of ginger, maturity of the rhizome, climate in which the plants are grown, when harvested, and preparation method of the extract (Grzanna et al., 2005).
Gaur et al. (2016) also reported that agro-climatic conditions are known to influence the production of secondary metabolites in ginger rhizome when same cultivar is grown in two different locations. Ginger is affected by leaf spots; leaves may have small, whitish spots with yellow edges; these get larger and spread, making the leaf yellow then brown, killing it. Early in the crop, it can cause severe losses. Fusarium spp., Rhizoctonia spp. and Pseudomonas solanacearum have been found in diseased leaves. Ginger propagation is usually performed with rhizome but has a lot of obstacles, the obstacles among other is the availability of good quality seed rhizome (Melati et al., 2016). Rhizome again, filled out, no wrinkles, bright shiny skin colour, and free of pests’ attacks is characteristics of high-quality seed (Hasanah et al., 2004).
Medicinal uses and potential health benefits in traditional and modern medicine industry
Ginger has direct anti-microbial activity and thus can be used in treatment of bacterial infections (Tan and Vanitha, 2004). In traditional Chinese medicine, it is employed in
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colic and in atonic dyspepsia and used as a stimulant (Keys, 1985; Grant and Lutz, 2000; Sharma, 2017; Yilmaz et al., 2018). Ginger is regarded as a Yang herb, which can decrease Yin and nourish the body (Jittiwat and Wattanathorn, 2012). Mishra et al. (2012) also revealed that ginger in traditional Chinese medicine, characterized as spicy and hot, and it is claimed to warm the body and treat cold extremities, improves a weak and tardy pulse, address a pale complexion, and strengthen the body after blood loss.
In traditional Chinese medicine is used as herbal therapy against several cardiovascular diseases (Wynn et al., 2001), based, on the historical usage of ginger as an antiemetic agent in the East Traditional Medicine. The antiemetic effect of ginger has been known as a treatment method in traditional medicine especially the Chinese and Iranian medicine (Eric Chan et al., 2011; Palatty et al., 2013; Naderi et al., 2016; Soltani et al., 2018). Sharma (2017) explained that many of herbs and plant extracts such as ginger is based on what has been used as part of traditional medicine systems and there is a large body of anecdotal evidence supporting their use and efficacy. Some other researchers emphasized that ginger plays an important role in Ayurvedic, Chinese, Arabic and African traditional medicines used to treat headaches, nausea, colds, arthritis, rheumatism, muscular discomfort and inflammation (Baliga et al., 2011; Dehghani et al., 2011). Recently, ginger rhizomes are used in traditional medicine as therapy against several cardiovascular diseases such as hypertension (Ghayur et al., 2005). Niksokhan et al. (2014) reported that ginger has been used in traditional medicine of Iran as an anti- edema drug and is used for the treatment of various diseases including nausea, gastrointestinal disorders, respiratory disorders, athero-sclerosis, migraine, depression, gastric ulcer, cholesterol; and other benefits of giner are reducing pain, rheumatoid arthritis, anti-inflammatory, and antioxidant effects. Surh et al. (1998), and Manju and Nalini (2010) mentioned that ginger is one of the most widely used spices in India and has been utilized frequently in traditional oriental medicine for common cold, digestive disorders and rheumatism. Ursell (2000) and Oludoyin and Adegoke (2014) reported that ginger is a perennial plant with narrow, bright green, grass-like leaves, and it is cultivated in the tropics for its edible rhizomes and has been found to be useful for both culinary and medicinal purposes.
Schwertner and Rios (2007) reported that the main components of ginger are 6-gingerol, 6-shogaol, 8-gingerol, and 10-gingerol and these constituents have previously been
Table 4. Active chemical constituents of Ginger (Kathi, 1999)
Phenols Volatile
Others Sesquiterpenes
Gingerols and Shogoals
Bisapolene, Zingiberene, Zingiberol, Sesquiphellandrene,
Curcurmene
6-dehydrogingerdione, Galanolactone, Gingesulfonic acid,
Zingerone, Geraniol,
Neral,
Monoacyldigalactosylglycerols, Gingerglycolipids
shown to exhibit strong antioxidant activity. 6-gingerol was reported as the most abundant bioactive compound in ginger with various pharmacological effects including antioxidant, analgesic, anti-inflammatory and antipyretic properties (Kundu et al., 2009; Dugasani et al., 2010). The shogaols can be partially transformed to paradols upon cooking or metabolized to paradols in the animals, body after being consumed and absorbed by digestive system (Wei et al., 2017). Gingerol and shogaol in particular, is known to have anti-oxidant and anti-inflammatory properties (Kim et al., 2005) and it is shown in Fig. 1.
Ginger extract can remove disorders caused by oxidative stresses as a strong anti-oxidant. Studies have shown that extant phenolic compounds and anthocyanins including gingerols and the sugevals had many neuro protective effects such as analgesic effects, memory improvement, and learning caused by the aging process (Fadaki et al., 2017).
For culinary purposes ginger is suitable for all dished both sweet such as drinks, puddings, apple pie, cakes, breads, candies, etc; and savoury such as soups, sauces, stews, savory puddings, grills, roasts, etc) (Oludoyin and Adegoke, 2014).
Oludoyin and Adegoke (2014) stated that the active hypoglycemic component of ginger was not affected by heat, hence, the consumption of ginger in raw and cooked forms in different cuisines maybe an effective regimen in the management of diabetes. Similarly, the medicinal uses of ginger are enormous such as exert anti-microbial, anti- nausea (Portnoi et al., 2003), anti-pyretic (Suekawa et al., 1984), analgesic, anti-inflammatory, hypoglycaemic (Ojewole, 2006; Young et al., 2005), anti-ulcer, antiemetic (Mascolo et al., 1989), cardio tonic, anti-hypertensive (Ghayur and Gilani, 2005), hypolipidemic (Al-Amin et al., 2006), anti-platelet aggregation (Bordia et al., 1997) effects in both laboratory animals and human subjects. Turmeric is one of the main ingredients for curry powder, and used as an alternative to medicine and can be made into a drink to treat colds and stomach complaints (Chan et al., 2009). In folk medicine, turmeric has been used in lowering blood pressure and as tonic and blood purifier (The Wealth of India, 2001). Phytochemical investigation of several types of ginger rhizomes has indicated the presence of bioactive compounds, such as gingerols, which are antibacterial agents and shogaols, phenylbutenoids, diarylheptanoids, flavanoids, diterpenoids, and sesquiterpenoids (Sivasothy et al., 2011; El Makawy et al., 2019). It has been proved in
some researches that ginger leaves has great potential to be developed into functional foods and other health products, because it has higher antioxidant activity than rhizomes and flowers (Park et al., 2014). When compared to the Indian varieties, the Chinese ginger is low in pungency and is principally exported as preserves in sugar syrup or as sugar candy (Govindarajan, 1982).Semwal et al. (2015) reported that an infusion of ginger rhizomes with brown sugar is administered to relieve common colds, while scrambled eggs with powdered ginger is taken as a home remedy to reduce coughing in China. While, ginger is used in the United States as a remedy to alleviate motion sickness and morning sickness during pregnancy and to reduce hear cramps (Semwal et al., 2015). Furthermore, there are many studies that proved their beneficial effects against the symptoms of diseases, acting as anti-inflammatory, anti-tumour, anodyne, neuronal cell protective, anti-fungal and anti-bacterial agent (Mesomo et al., 2012; Yassen and Ibrahim, 2016). Various ginger compounds and extracts have been tested as anti- inflammatory agents, where the length of the side chains determines the level of the effectiveness (Bartels et al., 2015). But, a combination of ginger extracts is more effective in decreasing inflammatory mediators than an individual compound (Lantz et al., 2007). The active ingredients in ginger are thought to reside in its volatile oils (Aldhebiani et al., 2017). The major ingredients in ginger oil are bisabolene, zingiberene, and zingiberol (Moghaddasi and Kashani, 2012). Some other scientists noted that the interest in ginger is endorsed to its several biologically active compounds content such as gingerol, shogaols, gingerdiol, gingerdione, α-zingiberene, curcumin, and β-sesqui- phellandrene (Zhao et al., 2011). Ginger has been part of the folk medicine and popular nutraceuticals (Bartels et al., 2015). Ginger consists of a complex combination of biologically active constituents, of which compounds gingerols, shogoals and paradols reportedly account for the majority of its anti-cancer inflammatory properties (Tjendraputra et al., 2001). 6-paradol was suggested as a therapeutic agent to effectively protect the brain after cerebral ischemia, likely by attenuating neuroinflammation in microglia (Gaire et al., 2015). Zinger officinale used as a condiment in several countries but also it acts as a treatment for ailments; for instance, gastrointestinal disorders, colds, arthritis, hypertension and migraines (White, 2007;
Hosseini et al., 2015). Maghbooli et al. (2014) confirmed
Fig. 1. Structure of 6-Gingerol, 8-Gingerol, 10-Gingerol and 6-Shogaol
Shahrajabian MH et al / Not Sci Biol, 2019, 11(3):309-319 314
the efficiency of ginger powder in the therapy of common migraine attacks and its similarity to the antiepileptic drug.
Many studies have reported that Ginger has useful effects to cancer prevention (Lee et al., 2008), also treatment of nausea and vomiting due to pregnancy and chemotherapy (Pongrojpaw et al., 2007; Ryan et al., 2012). The anti- spasmodic effect of Ginger is due to the blocked of cyclooxygenase and 5-lipoxygenase (van Breemen et al., 2011). Also, it has been reported that ginger lowers blood pressure through blockade of voltage dependent calcium channels (Ghayur and Gilani, 2005). Khaki et al. (74) reported that ginger has a protective effect against DNA damage induced by H2O2 and maybe promising in enhancing healthy sperm parameters. In Iran, traditionally ginger rhizome was used for enhancing male sexuality, regulating female menstrual cycle, and also reducing painful menstrual periods (Hafez, 2010). Adib Rad et al. (2018) reported that ginger as well as Novafen is effective in relieving pain in girls with primary dysmenorrhea, and treatment with natural herbal medicine, non-synthetic drug, is recommended to reduce primary dysmenorrhea.
Karangiya et al. (2016) concluded that the supplementation of garlic improves the performance of broilers when added at the rate of 1% of broiler and can be a viable alternative to antibiotic growth promoter in the feeding of broiler chicken. Manju and Nalini (2010) found that ginger supplementation to 1,2-dimethyl hydrazine (DMH) treated rats inhibited colon carcinogenesis, as evidenced by the significantly decreased number and incidence of tumours; in addition ginger optimized tissue lipid peroxidation and antioxidant status in DMH treated rats.
Dinesh et al. (2015) suggested that for growth promotion and management of soft rot disease in ginger, GRB35 B.
amyloliquefaciens and GRB68 S. marcescens could be good alternatives to chemical measures; they also recommend the use of B. amyloliquefaciens for integration into nutrient and disease management schedules for ginger cultivation.
Mahsani and Bukhari (2019) found that the extract of ginger rhizome have different effects on cells and anti-bodies of the immune system in smokers and non-smokers, although both benefited from enhancement of the thyroid gland. In their research, it has been found that ginger maybe beneficial for smokers with anemia, while for non-smokers, it may lead to a stronger antibody response or humoral immunity against infections. Vemuri et al. (2017) found that aqueous natural extracts mixtures (NE mix) prepared from common spice like ginger is a potential alternative therapeutic approach in certain types of cancer. Bartels et al.
(2015) concluded that ginger maybe considered as a part of the symptomatic treatment of osteoarthritis (OA), where the patient is motivated for trying this nutraceutical.
Schnitzer et al. (2002) mentioned that evidences is now provided suggesting that it may have a place in the management of OA of the knee, and coated ginger extract maybe considered for this purpose in the future. Adib Rad et al. (2018) found that Ginger reduced menstrual pain, and it is effective in relieving pain in girls with primary dysmenorrhea; moreover, Drozdoz et al. (2012) mentioned that Ginger is a safe drug with minimal side effects. Singara et al. (2017) reported that ginger is an effective non pharmacological option for treating hyperemesis
gravidarum with respect to the inherent heterogeneity of the available studies. Gholampour et al. (2017) found that ginger extract appears to exert protective effects against ferrous sulphate-induced hepatic and renal toxicity by reducing lipid peroxidation and chelating iron. Atashak et al. (2014) mentioned that 10 weeks of either ginger supplementation or progressive resistance training (PRT) protects against oxidative stress and therefore both of these interventions can be beneficial for obese individuals. Jittiwat and Wattanathorn (2012) demonstrated that ginger pharmacopuncture at GV20 can improve memory impairment following cerebral ischemia more rapidly than acupuncture, and one probable mechanism underlying this effect is improved oxidative stress. Yilmaz et al. (2018) found the positive effects of ginger in folliculogenesis and implantation. They have also found that ginger may enhance implantation in rats in long term with low dose. In other studies, the favourable outcomes have been reported on the positive effects of ginger on male infertility and sperm indices (Khaki et al., 2012; Ghlissi et al., 2013).
Akinyemi et al. (2016) described that dietary supplementation with both types of rhizomes, namely ginger and turmeric, inhibited arginase activity and prevented hypercholesterolemia in rats that received a high- cholesterol diet. In conclusion, these activities of ginger represent possible mechanisms underlying its use in herbal medicine to treat several cardiovascular diseases. Amri and Touil-Boukoffa (2016) concluded that Ginger has an important anti-hydatic effect in vitro, and this herbal product may protect against host’s cell death by reducing the high levels of nitric oxide (NO). They finally suggest the promising use of ginger in the treatment of Echinococcus granulosus infection. Soltani et al. (2018) recommend administration of oral ginger one hour before operation to control the severity of postoperative nausea and vomiting (PONV) in patients undergoing laparoscopic cholecystetcomy. Daily et al. (2015) claimed that ginger root supplementation significantly lowers blood glucose and HbA1c levels, and when combined with dietary and lifestyle interventions, it may be an effective intervention for managing Type 2 diabetes mellitus. Islam et al. (2014) boiled ginger extracts can be used in food preparation as well as against pathogenic bacteria during active infection.
Viljoen et al. (2014) suggested potential benefits of ginger in reducing nausea symptoms in pregnancy. They have found that ginger could be considered a harmless and possibly effective alternative option for women suffering from nausea and vomiting during pregnancy (NVP). Zaman et al.
(2014) mentioned that ginger root extract significantly inhibited the gastric damage and ginger root showed significant anti-ulcerogenic activity in the model studied; it can be a promising gastro-protective agent. Willetts et al.
(2003) concluded that ginger extract is a more effective treatment than placebo for nausea and retching during pregnancy. Yadav et al. (2016) demonstrated that ginger is one of the most commonly used spices and medicinal plants, and it is effective to improve diet induced metabolic abnormalities; however the efficacy of ginger on the metabolic syndrome associated kidney injury remains unknown. Naderi et al. (2016) stated that ginger powder supplementation at a dose of 1 g/d can reduce inflammatory
used for treatment of nausea, cold-induced disease, colic, asthma, cough, heart palpitation, swellings, dyspepsia, loss of appetency and rheumatism. Medicinal properties associated with ginger are, anti-inflammatory properties, anti- thrombotic properties, cholesterol-lowering properties, blood pressure-lowering properties, anti-microbial properties, anti-oxidant properties, anti-tumor properties, and hypoglycaemic properties. Consumption of ginger also has beneficial effects on heart disease, cancer, hypertension, obesity, diabetes, osteoarthritis, and bacterial infections.
Ginger is an herbal, easily available, low price medication which is associated with low risk can be substituted for chemical, scarce and expensive drugs. Based on other scientific literature, ginger demonstrates some promising health benefits, and more information gleaned from additional clinical studies will help confirm whether ginger,s multiple health benefits can be significantly realized in humans. Herbal remedies and other nutraceuticals are increasingly and extensively used by a substantial part of the population. To sum up, treatment with natural herbal medicine especially ginger, non-synthetic drug is recommended.
Conflict of Interest
The authors declare that there are no conflicts of interest related to this article.
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markers in patients with knee osteoarthritis, and it thus can be recommended as a suitable supplement for these patients.
Mahmoud and Elnour (2013) discovered that ginger has a great ability to reduce body weight without inhibiting pancreatic lipase level, or affecting bilirubin concentration, with positive effect on increasing peroxisomal catalase level and HDL-cholesterol. Ebrahimzadeh Attari et al. (2015) revealed a minor beneficial effect of ginger powder supplementation on serum glucose and a moderate, significant effect on total cholesterol, as compared to the placebo. Malhotra and Singh (2003) also mentioned the effect of ginger on lowering cholesterol, and anti- hyperlipidemic agent, the role of ginger in the treatment of nausea and vomiting (anti-emetic), ginger possesses anti- skin tumour promoting effects, and that the mechanism of such effects may involve inhibition of tumour promoter- caused cellular, biochemical, and molecular changes (chemo-protective), anti-viral activity, anti-motion and anti-nauseant effects, anti-inflammatory, diminishing or eliminating the symptoms of hyperemesis gravidarum, ginger influence on exert abortive and prophylactic effects in migraine headache without any side effects and anti- ulcerogenic, Ginger and its constituent play pharmacological effects in cancer management via modulation of molecular mechanism, and the mechanism consist of inhibition of VEGF, activation of Bax, inhibition of Lypoxygenase, activation o P53, inhibition of Interlukin, inhibition of Bcl2 and Survivin, inhibition of Cycloxygenase, inhibition of IFN-γ, suppression of TNF and NF-kB and activation of G0/G1 phase (Rahmani et al., 2014). Accumulating evidence suggests that many dietary factors may be used alone or in combination with traditional chemotherapeutic agents to prevent or treat disease, and ginger is example of medicinal plants which is gaining popularity amongst modern physicians (Sakr and Badawy, 2011). Gagnier et al. (2006) provide an excellent framework for the development of future trials that focus on providing satisfactory answers to issues relating to the efficacy of Z. officinale to ameliorate different types of pain, as well as, dosing strategies, treatment duration, safety, and cost effectiveness.
Conclusions
Ginger is used worldwide as a cooking spice, condiment and herbal remedy, and it is also extensively consumed as a flavouring agent. Ginger, a plant in the Zingiberaceae family, is a culinary spice that has been as an important herb in traditional Chinese medicine for many centuries. More than 60 active constituents are known to be present in ginger, which have been broadly divided into volatile and non-volatile compounds. Hydrocarbons mostly monoterpenoid hydrocarbons and sesquiterpene include the volatile component of ginger and impart distinct aroma and taste to ginger. Non-volatile compounds include gingerols, shogaols, paradols, and also zingerone. The active ingredients like gingerols, shogaols, zingerone, and so forth present in ginger exhibit antioxidant activity. Among gingerols and shogaol the major pungent components in the rhizome are 6-gingerol and 6-shogaol. Gingerol, the active constituent of ginger has been isolated and studied for pharmacological and toxic effects. Fresh ginger has been
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