【作者】 张玥；

【导师】 杨林；

【作者基本信息】 哈尔滨工业大学 ， 食品科学， 2015， 硕士

【摘要】 大米蛋白是一种具有较高营养价值的植物性蛋白,到目前为止,关于大米蛋白功能性的研究还处于起步阶段,国内外更是鲜见关于大米蛋白消化性能的报导,因其消化性能与其功能性有密切关系,所以研究大米蛋白的消化性能及其影响因素刻不容缓。本课题主要研究不同膳食条件对大米蛋白消化性能的影响,旨在为研究大米蛋白的消化性能及影响因素提供更为切确的理论依据。本实验以生长期幼鼠和成熟期大鼠为研究对象,分别以大米蛋白、酪蛋白以及普通饲料为蛋白源,幼鼠饲喂粗蛋白含量为20%的饲料,成熟鼠饲喂粗蛋白含量为14%的饲料,在自由摄食和自由饮水的实验模式下,研究不同膳食条件对大米蛋白消化性能的影响,初步阐述了大米蛋白的消化性能及影响因素的研究。在无胆固醇无油脂膳食条件下,幼鼠和成熟鼠体内大米蛋白消化性能均低于酪蛋白,且最后幼鼠和成熟鼠粪中大米蛋白残留量与酪蛋白相比较多,幼鼠体内大米蛋白消化率与酪蛋白相比低11%左右,成熟鼠体内大米蛋白消化率与酪蛋白相比低8%左右。在富含胆固醇膳食条件下,幼鼠和成熟鼠体内大米蛋白消化性能均低于酪蛋白,且最后幼鼠和成熟鼠粪中大米蛋白残留量与酪蛋白相比较多,幼鼠体内大米蛋白消化率与酪蛋白相比低16%左右,成熟鼠体内大米蛋白消化率与酪蛋白相比低7%左右。在富含油脂膳食条件下,幼鼠和成熟鼠体内大米蛋白消化性能均低于酪蛋白,且最后幼鼠和成熟鼠粪中大米蛋白残留量与酪蛋白相比较多,幼鼠体内大米蛋白消化率与酪蛋白相比低12%左右,成熟鼠体内大米蛋白消化率与酪蛋白相比低8%左右。更多还原

【Abstract】 Rice protein is a good plant protein, which has higher nutritional value. Thus, the research about the function of rice protein in our country is still at an early stage, and there is no research about the digestibility of rice protein both in China and abroad which has something to do with how rice protein can play an efficient role. So we need to pay attention to it. To elucidate the influences on the digestibility of rice protein, my paper is learning diet changes of rice protein in the digestive tract on different dietary conditions.The digestibility of rice protein was investigated in growing rats and adult rats fed by rice protein, growing rats and adult rats were fed cholesterol and oil-free, cholesterol –enriched and oil-enriched diets with a dietary protein level of 20% and 14%(as crude protein, CP) of CAS and RP, respectively.On normal diet, rice protein digestibility is lower than casein both in growing rats and adult rats, and there is more rice protein than casein in feces of growing rats and adult rats. Compared with casein, rice protein digestibility is 11% lower in growing rats and 8% lower in adult rats.On cholesterol-enriched diet, rice protein digestibility is lower than casein both in growing rats and adult rats, and there is more rice protein than casein in feces of growing rats and adult rats.Compared with casein, rice protein digestibility is 16% lower in growing rats and 7% lower in adult rats.On oil-enriched diet, rice protein digestibility is lower than casein both in growing rats and adult rats, and there is more rice protein than casein in feces. Compared with casein of growing rats and adult rats, rice protein digestibility is 12% lower in growing rats and 8% lower in adult rats.更多还原