Abstract
Trapa natans (Family: Trapacea) is an edible and ornate plant in warm, temperate regions of
Asia and Europe. Extracts of different parts, as well as the whole herb itself, have traditionally been used
to treat many ailments. Current review aims at documenting, finding research gaps, and critically appraising
the contemporary information on T. natans based on botanical account, traditional use, reported bioactive
constituents, toxicity, and therapeutic activities. We used several electronic databases, including
scientific data from Pubmed, and Google scholar up to April 3, 2022, incorporating keywords- “Trapa natans”
and “Traditional use of Trapa natans”. The result suggested: (a) The plant is used traditionally for
treating burning sensation, dipsia, dyspepsia, haemorrhage, diarrhoea, dysentery, leprosy, weariness, inflammation,
fractures, pharyngitis, urethrorrhea, bronchitis, and general debility. (b) The phytoconstituents
found in the plant include cycloucalenol, ursolic acid, ellagic acid, chlorogenic acid, gallic acid, syringic
acid, quercetin and 2β, 3α, 23-trihydroxy urs-12-en-28-oic acid. The other phytoconstituents were
protein, carbohydrates, starch, flavonoids, and essential vitamins like riboflavin, thiamine, pyridoxine,
pantothenic acid, nicotinic acid, vitamin A, vitamin C and D-amylase. (c) The plant was studied further
for its pharmacological activity in antidiabetic properties, antimicrobial potency, anti-inflammatory activity,
analgesic activity, immunomodulatory effect, antiulcer activity, anticancer property and nootropic
activity. (d) Starch obtained from T. natans was also found to have good freeze-thaw properties, metal
chelation properties and youghurt stability which could be used for pharmaceutical preparations. (e) The
acute oral toxicity of hydroalcoholic, ethanolic and methanolic extracts of T. natans was reported to be
safe up to a dose of 2000 mg/Kg. The present review suggests that T. natans needs to be explored for
evaluation of mechanistic study of the reported activities, preclinical investigations, and evaluation of
clinical studies on humans for its pharmacokinetics and pharmacodynamic actions as well as the development
of dose-dependent formulations and routes of administration.
Keywords:
Trapa natans, Trapa bispinosa, shrungataka, herbal medicine, traditional use, phytopharmacology.
Graphical Abstract
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