Ramirez I
Monell Chemical Senses Center, Philadelphia, PA 19104-3308.
Physiol Behav. 1993 Dec;54(6):1195-200. doi: 10.1016/0031-9384(93)90348-j.
When given a choice between fluids containing equal amounts of corn starch or glucose, Fischer rats preferred the fluid containing starch when the fluids contained 0.5%, 1%, 5%, or 20% carbohydrate, but not when the fluids contained 10% carbohydrate. Fischer rats preferred 0.5% sucrose over 0.5% starch on the first day of testing, but then switched to preferring starch. Rats of the CD strain also preferred 0.5% starch over 0.5% sucrose or 0.5% glucose, but showed no reliable preference when offered a choice of 5% starch vs. 5% sucrose or 5% glucose. Most experiments used corn starch, but rats prefer 1% rice, wheat, and tapioca starch over 1% glucose. Rats given only one substance to drink, drank more fluid if the fluid contained 1% starch than if it contained 1% glucose. Preexposing rats to either glucose or starch for 3 days did not influence subsequent preference for starch over glucose. Since the starch and glucose mixtures used in the present work had the same number of calories, preference for starch over glucose must be attributed to the hedonic effects of starch flavor rather than to the postingestive effects of starch.
当在含有等量玉米淀粉或葡萄糖的液体之间进行选择时，在液体碳水化合物含量为0.5%、1%、5%或20%的情况下，费希尔大鼠更喜欢含有淀粉的液体，但当液体碳水化合物含量为10%时则不然。在测试的第一天，费希尔大鼠更喜欢0.5%的蔗糖而不是0.5%的淀粉，但之后转而更喜欢淀粉。CD品系的大鼠也更喜欢0.5%的淀粉而不是0.5%的蔗糖或0.5%的葡萄糖，但在提供5%淀粉与5%蔗糖或5%葡萄糖的选择时，没有表现出可靠的偏好。大多数实验使用的是玉米淀粉，但大鼠更喜欢1%的大米、小麦和木薯淀粉而不是1%的葡萄糖。只给大鼠一种物质饮用时，如果液体含有1%的淀粉，它们饮用的液体比含有1%葡萄糖时更多。让大鼠预先接触葡萄糖或淀粉3天，并不影响其随后对淀粉而非葡萄糖的偏好。由于本研究中使用的淀粉和葡萄糖混合物热量相同，对淀粉的偏好超过葡萄糖一定归因于淀粉味道的享乐效应，而不是淀粉的摄入后效应。
