d- α -TOCOPHEROL, CONCENTRATE
Prepared at the 55th JECFA (2000) and published in FNP 52 Add 8 (2000), superseding tentative specifications prepared at the 30th JECFA (1986) and published in FNP 37 (1986) and in FNP 52 (1992). A group ADI of 0.15-2 mg/kg bw for dl-α-tocopherol and d-α-tocopherol, concentrate, singly
or in combination, was established at the 30th JECFA (1986).
SYNONYMS Vitamin E, RRR-alpha -tocopherol, 5,7,8-trimethyltocol, (+)-alphaTocopherol; INS No. 307a
DEFINITION d-alpha-Tocopherol, concentrate is a form of Vitamin E obtained by the vacuum steam distillation of edible vegetable oil products, comprising a concentrated form of d-alpha-tocopherol. It may contain an edible vegetable oil added to adjust the required amount of total tocopherols, and the content of d-alpha-tocopherol may be adjusted by suitable physical and chemical means.
Chemical names (2R,4’R,8’R)-2,5,7,8-tetramethyl-2-(4’,8’,12’-trimethyltridecyl)-chroman-6-ol
C.A.S. number No. 59-02-9 (Vitamin E)
Chemical formula C29H50O2
Formula weight 430.71
Assay Not less than 40% of total tocopherols, of which not less than 95% consists of d-alpha-tocopherol
DESCRIPTION Brownish red to light yellow, nearly odourless, clear viscous oil, which oxidizes and darkens slowly in air and on exposure to light
FUNCTIONAL USES Antioxidant, nutrient
