期刊论文

中文

中国油脂

1003-7969

2015

40

7

26-30

10.3969/j.issn.1003-7969.2015.07.006

湖南省林业专项资金（湘财农指[2013]90号）；

本校为第一机构

以脱壳后经超临界CO_2萃取脱脂的牡丹籽粕为原料, 采用碱溶酸沉法提取其中的蛋白质, 在单因素试验的基础上, 利用响应面法进行优化, 确定提取牡丹籽蛋白的最佳工艺条件, 并对提取的牡丹籽蛋白与大豆分离蛋白的一些功能性质进行比较研究。结果表明, 牡丹籽蛋白的最佳提取工艺条件为: 料液比1∶ 25, 浸提pH 9.25, 提取温度53.32℃, 提取时间68.74 min, 且影响因素主次顺序为浸提pH > 料液比> 提取时间> 提取温度; 最佳工艺条件下的蛋白质提取率为62.95%, 提取的牡丹籽蛋白中蛋白质含量为68.06%; 牡丹籽蛋白的乳化稳定性和泡沫稳定性优于大豆分离蛋白, 而其吸水性、吸油性、持水性、乳化性和起泡性...

Peony seed protein was prepared by alkaline extraction and acid precipitation from peony seed meal which was dehulled then defatted by supercritical carbon dioxide extraction. The extraction conditions of peony seed protein were optimized by response surface methodology on the basis of single factor experiment, and the functional properties of peony seed protein were studied and compared with soybean protein isolate（SPI）. The results showed that the optimal extraction conditions of peony seed protein were obtained as follows ： ratio of mater...