EFFECTS OF LEVELS OF FATTY ACIDS AND CARBOHYDRATES IN A DIET ON BIOSYNTHESIS OF FATTY ACIDS IN LARVAE OF SILKWORM, BOMBYX-MORI
EFFECTS OF LEVELS OF FATTY ACIDS AND CARBOHYDRATES IN A DIET ON BIOSYNTHESIS OF FATTY ACIDS IN LARVAE OF SILKWORM, BOMBYX-MORI
复制标题
DOI：
10.1016/0022-1910(71)90153-3
复制
发表时间：
1971-01-01
影响因子：
2.2
通讯作者：
NAKASONE, S
中科院分区：
文献类型：
--
作者：
HORIE, Y;NAKASONE, S
研究了日粮中不同水平脂肪酸和碳水化合物对家蚕（Bombyx mori）幼虫葡萄糖合成脂肪酸的影响。饲料中脂肪酸水平的升高导致幼虫脂肪酸合成率的降低。在饮食中添加棕榈酸酯、硬脂酸酯或油酸酯对脂肪酸合成有抑制作用。长时间进食含有高水平脂肪酸的食物会加剧合成的抑制。在高碳水化合物和低碳水化合物的饮食中都发现了膳食脂肪酸的抑制作用。另一方面，增加饮食中蔗糖的含量会大大加快脂肪酸的合成速度，而淀粉的添加则不会。此外，食用蔗糖和马铃薯淀粉的两组幼虫的组织脂肪酸组成也有显著差异。蔗糖饲粮显著提高了幼虫组织中的棕榈酸和油酸含量。由此可见，家蚕脂肪酸合成速率受饲粮脂肪酸和碳水化合物水平的调控。
The effects of varying levels of fatty acids and carbohydrates in the diet on fatty acid synthesis from glucose in the larvae of the silkworm,Bombyx mori, were investigated. Elevation of the level of dietary fatty acids resulted in the decrease of the rate of fatty acid synthesis in the larvae. The addition of palmitate, stearate, or oleate to a diet had an inhibitory effect on fatty acid synthesis. The prolonged feeding of larvae on a diet containing a high level of fatty acid intensified the depression of the synthesis. The inhibitory effect of dietary fatty acid was found in the presence of both high and low levels of dietary carbohydrates. On the other hand, the rate of fatty acid synthesis was greatly accelerated by increasing the level of sucrose in a diet but not by the addition of starch. Furthermore, the fatty acid composition of the larval tissue shows a marked difference between the two groups of larvae fed on a diet containing sucrose and on a diet containing potato starch. Palmitic and oleic acid contents of larval tissue were increased significantly on the sucrose diet.It is thus evident that the rate of fatty acid synthesis in the silkworm is regulated by the dietary levels of fatty acids and carbohydrates.