n. a substance that is not itself a vitamin but can be converted to a vitamin in the body. An example is ?-carotene, which can be converted into vitamin A.
Habitat: Subalpine and temperate Himalayas, at altitudes of 1,8003,750 m.
English: Bitter Cress, Hedge Mustard, Yellow Rocket, Winter Cress.Folk: Cress.Action: Diuretic, anthelmintic, stomachic, antiscorbutic, (leaves are rich in vitamin C 130 mg/100 g). Pulverised herb is used as an agent for stimulating spermatogenesis.
The roots contain sinigrin; seeds contain a glucoside, glucobarbarin, and myrosin.The protein and phosphorus contents of the plant decrease with the maturity, whereas the calcium contents increase (tender stems are eaten as a salad). The leaves and buds are a rich source of provitamin A (beta- carotene).... barbarea vulgarisHabitat: Native to South America; cultivated in gardens; now naturalized in some parts of In dia at medium elevations under sub-tropical conditions.
English: Pitaanga, Surinam Cherry.Action: Fruit—used as a source of carotenoids (225.9 mcg/g) and provitamin A (991 RE/100g). Leaves—diuretic, antirheumatic, antifebrile. Used for lowering blood pressure, blood cholesterol, uric acid level, also for reducing body weight. Essential oil— digestive, carminative.
The leaves gave flavonoids, querci- trin, quercetin, myricitrin and myrice- tin as major constituents.The bark contains 28.5% tannins.... eugenia unifloraHabitat: Native to Brazil. Major crop in Kerala, Tamil Nadu and Andhra Pradesh.
English: Manioc, Tapioca, Cassava.Siddha/Tamil: Maravalli kizhangu, Ezhalai kizhangu.Folk: Tapioca.Action: Staple food for poorer section of the population in many tropical countries. The starch is used for the manufacture of dextose, liquid glucose. The bitter variety is used for treating scabies and weeping skin.
The tuber is a good source of provitamin A carotenoids. It contains 0.1-3.0 mg/kg (fresh weight) of beta- carotene and 0.05-00.6 mg/kg (fresh weight) of lutein. The bitterness of the tuber is related to the cyanoglu- coside content which ranges from 320 to 1,100 mcg cyanide/g in very bitter tubers and from 27.5 to 77.5 mcg is non-bitter tubers. Boiling, crushing and sun-drying reduce bitterness and also cyanoglucoside content. The tannin equivalent content in the clones varies from 0.31 to 0.34% and saponin equivalent varies from 0.18 to 0.29%.Feeding tapioca significantly reduced the plasma cholesterol profile experimentally in cats and rats.... manihot esculentaHabitat: Cultivated as a food crop mainly in Punjab, Haryana, Uttar Pradesh., Madhya Pradesh, Maharashtra, Bihar and Rajasthan.
English: Wheat.Ayurvedic: Godhuuma.Folk: Gehun.Action: Wheat germ oil is rich in tocopherol (vitamin E) content, total tocopherols 1897 mcg/g, alpha tocopherol 67%. The presence of ergosterol (provitamin D) has also been reported.
Wheat germ is also used for its minerals, proteins and lipid contents. Germ proteins are rich in lysine (5.285.55 g/100 g protein) and possess high biological value (94%) and protein efficiency ratio (2.9).Wheat germ contains haemaggluti- nating and antipyretic factors, but these are destroyed by toasting. It also contains haemoproteins, possessing per- oxidase activity.In adult rats, addition of wheat germ (7%) to a high fat (cholesterol) diet significantly decreased VLDL-cholesterol and VLDL-triglycerides and increased the HDL-cholesterol after-7 weeks of feeding.Bran oil contains tocopherols, but major part of them (68%) is in epsilon form; alpha-tocopherol forms only 11% of the total.Gluten lipids, associated with gluten, contain a high percentage of linoleic acid; lowering of serum cholesterol level has been observed in experiments (lipid-free gluten is devoid of cholesterol-lowering effect).Sensitivity to gluten has also been reported (even when whole wheat flour was used).... triticum aestivum
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