خرید و دانلود نسخه کامل کتاب Vitamin E: Chemistry and Nutritional Benefits – Original PDF

In 1922, Evans and Bishop demonstrated the existence of a hitherto unrec- ognized dietary factor essential for normal reproduction in the rat.1 It was accepted at that time that the most striking function of vitamin E was to provide a normal gestation in a pregnant rat to prevent the resorption of the embryos which invariably occurred in its absence.2 This unknown dietary factor X was found to be present in green lettuce, dried alfalfa leaves, wheat, and oats. Evans isolated the factor X from wheat germ oil, provided the chemical formula C 29H50O2 and proposed the name α-tocopherol in 1936. 3 The structural formula for α-tocopherol was provided by Fernholz in 1938.4 Tocotrienols were discovered much later than tocopherol and named in the early 1960s