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  • Title: Gmelina arborea- an indigenous timber species of India with high medicinal value: A review on its pharmacology, pharmacognosy and phytochemistry.
    Author: Warrier RR, Priya SM, Kalaiselvi R.
    Journal: J Ethnopharmacol; 2021 Mar 01; 267():113593. PubMed ID: 33217516.
    Abstract:
    ETHNOPHARMACOLOGICAL SIGNIFICANCE: Gmelina arborea Roxb.ex Smith, a fast-growing deciduous tree belongs to the family Lamiaceae, and is an important plantation species in many tropical areas around the world. The species is naturally distributed in semi-deciduous forests in tropical/subtropical regions of South East Asia. The tree is also an important medicinal plant in the Indian Systems of Medicine. The whole plant is used in medicine. It is astringent, bitter, digestive, cardiotonic, diuretic, laxative and pulmonary and nervine tonic. It improves digestion, memory, helps overcome giddiness and is useful in burning sensation, fever, thirst, emaciation, heart diseases, nervous disorders and piles. The roots are acrid, bitter-sweet in taste, stomachic, tonic, laxative, galactagogue and antihelmintic. The flowers are sweet, refrigerant, bitter, astringent and acrid, and are used in treating leprosy and skin diseases. The fruits are acrid, sour, sweet, refrigerant, bitter, astringent, aphrodisiac, trichogenous, alterant and tonic. Fruits are edible and also used for promoting hair growth and in treating anaemia, leprosy, ulcers, constipation, leucorrhoea and colitis. The leaves are a good fodder also. The major bioactive compounds extracted from different parts of G. arborea are arboreal, verbascoside, tyrosol, iridoids, phenylpropanoid glycoside, premnazole, martynoside, iridoid glycosides, balanophonin, gmelinol, isoarboreol apigenin, umbelliferone etc. AIM OF THE REVIEW: This review provides an insight into the medicinal aspects of G. arborea. It provides the latest information on phytochemistry, pharmacological activities and traditional uses of G.arborea. MATERIALS AND METHODS: Information on G. arborea was gathered from various sources like textbooks, literature, databases such as PubMed, Science Direct, Wiley, Springer, Taylor and Francis, Scopus, Inflibnet, Sci-Finder and Google Scholar. RESULTS: Sixty-nine phytochemicals which include lignans, acylated iridoid glycosides, acylated rhamnopyranoses, flavonoids, flavones, flavone glycosides have been isolated. Many of them have been characterized for their pharmacological activity. Several researchers have identified bioactive phytochemicals like luteolin, iridoid alkaloids from the leaves, hentriacontanol and lignans such as arboreol, isoarboreol, arborone, gmelanone, gummadiol from the heartwood, flavon glycosides in roots. The extracts are reported to have wound-healing and antidiarrheal properties. Various studies demonstrated that G.arborea and its constituents possess several pharmacological activities like anti-oxidant, anti-diabetic, anti-inflammatory, antiulcer, analgesic, anti-nociceptive, anticancer and wound healing activities. CONCLUSION: G. arborea is a valuable medicinal plant used traditionally in the Indian Systems of Medicine (ISM - Ayurveda and Unani) to treat a wide variety of ailments. These phytochemicals are highly bioactive and exhibit various pharmacological activities. However, pharmacological activities of many compounds which have been identified, are yet to be understood.
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