3Eun-Mi H, Song-Hee K, Joungjwa A, et al. Optimizing cholester- ol removal from cream using/-cyclodextrin crosslinked with adip- ic acid[J]. International Journal of Dairy Technology, 2007, 60 (1): 31-36.
4Chang E J, Oh H I, Kwak H S. Optimization of cholesterol remov- al conditions from homogenized milk by treatment with saponin [J]. J Anim Sci, 2001, 14(6): 844-899.
5Verma P, Agrawal U S, Sharma A K, et al. Optimization of process parameters for the development of a cheese analogue from pigeon pea(cajanus cajan) and soy milk using response surface methodol- ogy[J]. International Journal of Dairy Technology, 2005, 58 (1): 51-583.
6Johnston N L. Boriler performance with dss40 yucca saponinin combination with monensin[J]. Poul Sci, 1982, 61:1 052-1 054.