【摘要】 为提高大米抗氧化肽的稳定性,扩大其应用范围,先选用玉米多孔淀粉吸附包埋大米抗氧化肽,再利用超声波辅助黄原胶对多孔淀粉-大米抗氧化肽进行二次包埋,制备大米抗氧化肽微胶囊。以包埋率为评价指标,通过响应面分析法得到制备大米抗氧化肽微胶囊的最佳工艺参数为:超声时间30 min、超声功率150 W、肽与多孔淀粉质量比3∶12、固形物含量18.0%、黄原胶添加量0.5%。经验证,在确定的最优条件下制备的微胶囊包埋率为80.12%,与预测值基本吻合,说明所建模型准确可行。更多还原

【Abstract】 In order to improve the stability of rice antioxidant peptide and widen its application, rice antioxidant peptide was primarily microcapsulated in corn porous starch and then embedded in xanthangum with ultrasound-assisted. Adopting encapsulation efficiency as evaluation index, response surface methodology(RSM) was employed to optimize the production parameters for rice antioxidant peptide microcapsule.Results showed that the optimum parameters were as follows:ultrasonic time 30 min, ultrasonic power 150 W, the mass ratio of peptide to porous starch 3 ∶12, solid substance content 18.0%, xanthangum amount 0.5%. The encapsulation efficiency could reach as high as 80.12% under the abovementioned optimum conditions. It was feasible to set this model suiting with the the experimental data.更多还原