title: Effects of α-tocopherol level in raw venison on lipid oxidation and volatiles during storage.
abstract: Relationships between α-tocopherol concentration in the muscle and development of lipid oxidation or volatiles in raw venison were studied. Fourteen Japanese Shika Deer (Cervus nippon) were fed various amounts (0-3.0 g of α-tocopheryl acetate per animal) during the different periods (0-37 days) and then M. longissimus thoracium et lumborum (LD muscles) with a range of α-tocopherol concentrations (4.1-15.1 mg/kg tissue) were obtained. For stabilizing the lipid during storage for 11 days under air, over ca. 9 mg of α-tocopherol per kg tissue were required based on levels of 2-thiobarbituric acid reacting substances (TBARS) numbers. Nine compounds were identified in headspace volatiles, and one of the volatiles was hexanal which has been recognized as off-flavour component. For depressing the hexanal evolution, at least ca. 9 mg of α-tocopherol per kg tissue were also required for 11 days' storage. This value was much higher than other species. The reasons for higher requirement of α-tocopherol were possibly due to the higher concentration of unsaturated fatty acid and myoglobin in venison.
authors: Department of Animal Production and Grasslands Farming, Tohoku National Agricultural Research Center, Morioka, Iwate, 020-0198, Japan.
authors: Yasuko
authors: Y
authors: Okabe
authors: A
authors: A
authors: Watanabe
authors: H
authors: H
authors: Shingu
authors: S
authors: S
authors: Kushibiki
authors: K
authors: K
authors: Hodate
authors: M
authors: M
authors: Ishida
authors: S
authors: S
authors: Ikeda
authors: T
authors: T
authors: Takeda