杨梅渣红色素的超声提取和微胶囊化工艺研究

研究了杨梅渣红色素的超声提取和微胶囊化工艺．通过正交实验确定了杨梅渣红色素超声提取的最佳工艺条件：料液比为1：12g·mL^-1，pH=1，提取时间为40min，超声波功率为400W．通过单因素实验确定了杨梅渣红色素微胶囊化的工艺条件：壁材阿拉伯胶与麦芽糊精的比例为1：3，芯壁比为1：14，乳化剂蔗糖脂肪酸酯的含量为0．6％，黏稠剂普鲁兰多糖的含量为0．5％．稳定性实验表明杨梅渣红色素经微胶囊化后耐热、耐酸、耐光性显著提高．

Study on technologies of ultrasonic extraction and microencapsulation of red pigment from Myrica rubra pomace

The technologies of ultrasonic extraction and microencapsulation of red pigment(RP) from Myrica rubra pomace were studied.The optimized ultrasonic extraction conditions of RP were obtained by an orthogonal design: material/liquid ratio,pH,time and ultrasonic power as 1 ∶ 12 g·mL-1,1,40 min and 400 W,respectively.By the single factor experiments,the technological conditions of microencapsulation of RP from M.rubra pomace were as follows: the ratios of Arabic gum to maltodextrin(wall materal) and the core substance to wall material was 1 ∶ 3 and 1 ∶ 14,respectively;the contents of sucrose fatty acid ester(emulsion) and pururan(viscous agent) were 0.6% and 0.5%,respectively.Stabilility experiment of microencapsulation RP indicated its resistibilities to acid,heat and light were significantly increased.