食品科学 ›› 2011, Vol. 32 ›› Issue (21): 161-164.doi: 10.7506/spkx1002-6630-201121033

• 生物工程 • 上一篇    下一篇

水解条件对挤压膨化高温豆粕酶解物免疫活性的影响

张智宇1,朱秀清1,2,*,任为聪1   

  1. 1.东北农业大学食品学院 2.国家大豆工程技术研究中心
  • 出版日期:2011-11-15 发布日期:2011-11-11
  • 基金资助:
    国家“863”计划项目(2006AA10Z322);黑龙江省科技厅科学技术计划项目(GB08B401-01)

Effect of Hydrolysis Conditions on Immunoactivity of Enzymatic Hydrolysates from Extruded High-temperature Soybean Meal

ZHANG Zhi-yu1,ZHU Xiu-qing1,2,*,REN Wei-cong1   

  1. (1. College of Food Science, Northeast Agricultural University, Harbin 150030, China; 2. National Soybean Engineering and Technique Research Center, Harbin 150030, China)
  • Online:2011-11-15 Published:2011-11-11

摘要: 研究合理的水解工艺以有效提高高温豆粕的免疫活性。采用二次旋转回归法优化水解条件,以水解温度、酶添加量、底物添加量、酶解时间为影响因素,以淋巴细胞增殖指数(SI)为检测指标,运用SPSS13.0软件分析,最终用Design Expert 7.0.0软件优化出最优的水解条件。最优的工艺条件为:胰蛋白酶添加量7999.97U/g,酶解温度55.14℃,水解时间4.34h,底物添加量(底物与加水量之比)4.41%,经MTT法测定,此条件下酶解物对ConA诱导的小鼠脾淋巴细胞的免疫刺激指数最高,为1.1894。

关键词: 高温豆粕, 中心组合, 胰蛋白酶, 免疫活性

Abstract: In order to improve the immunoactivity of enzymatic hydrolysates from extruded high-temperature soybean meal, the hydrolysis of the substrate by trypsin was optimized using central composite rotary design. Spleen lymphocyte proliferation (expressed as the stimulation index, SI) was investigated with respect to four variables including hydrolysis temperature, enzyme amount, substrate concentration and hydrolysis time. Using SPSS 13.0 and Design Expert 7.0.0, the experimental data were analyzed to determine the optimal hydrolysis conditions as follows: enzyme amount of 7999.97 U/g, hydrolysis temperature of 55.14 ℃, hydrolysis time of 4.34 h, and substrate concentration of 4.41%. Under the optimal hydrolysis conditions, the ConA-induced spleen lymphocyte stimulation index was determined by MTT method to be 1.1894.

Key words: high-temperature denatured soybean meal, central composite design, trypsin, immunoactivity

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