Abstract: A beverage stabilizer consisting of a mixture of xanthan gum,carboxy methyl cellulose (CMC) and propylene glycol alginate (PGA) at a ratio of 1 ∶ 1.5 ∶ 6.25 was developed by one-factor-at-a-time method and used in a dairy beverage supplemented taking mung bean protein as one of the ingredients.The formulation of the beverage was optimized by orthogonal array design for improved sensory evaluation and emulsion stability.Meanwhile,the thermal stability of the product was evaluated.The optimal formulation was found to consist of 8.0％ whole milk powder,1.0％ mung bean protein,10.0％ white sugar,0.4％ stabilizer and 0.3％ citric acid.The resulting product had a rich milky aroma and delicate taste with moderate sweetness,and its emulsion stability was 98.60％.The milk protein content was 1.95％,which was in line with the national standard requirements of GB/T 21732-2008 for milk beverages.

Key words: mung bean protein; dairy beverage; stability

摘要： 通过单因素试验确定复合稳定剂中黄原胶、羧甲基纤维素(carboxy methyl cellulose,CMC)、海藻酸丙二醇酯(propylene glycol alginate,PGA)的复配比例为1∶1.5∶6.25。在乳饮料生产中添加绿豆蛋白,以感官评分和产品的乳化稳定性为考核指标,通过正交试验确定产品的最佳配方,同时考察其热稳定性的变化。结果表明:最佳配方为乳粉8.0％、绿豆蛋白1.0％、绵白糖10.0％、复合稳定剂0.4％及柠檬酸0.3％(以上均为质量分数),按此配方生产的绿豆蛋白乳饮料乳香浓郁、口感细腻、甜度适中,乳化稳定性为98.60％。饮料中乳蛋白含量为1.95％,符合GB/T21732-2008《含乳饮料》中的标准要求。

关键词: 绿豆蛋白; 乳饮料; 稳定性