Oil Tea Soup Formula Optimization Based on Orthogonal Test and Fuzzy Mathematics Sensory Evaluation

The aim of this study is to optimize the formula of oil soup, which was one of traditional food of Guangxi province, south China. Tea leaves, bone soup, beans and other minor ingredients in the formula of oil tea soup are selected as the research objects. The sensory evaluation factors such as flavor, taste, color, aroma were selected to optimize the formula of oil tea soup based on orthogonal test and fuzzy mathematics comprehensive evaluation. The results showed the most important factor that affected the quality of the oil tea soup was tea leaves content, followed by the proportion of bone soup, minor ingredient and beans content. The study indicated that the optimal recipe ofoil tea soup was as follow： 0.6% tea, 0.4% beans, and 0.5% other ingredients. The ratio of material to solution of bone soup was 1：5.

野生毛葡萄皮渣花色苷稳定性研究

以野生毛葡萄皮渣为原料,用乙醇提取花色苷并研究其稳定性。结果表明:毛葡萄皮渣花色苷对p H、温度、光照、氧化剂、还原剂和防腐剂敏感;葡萄糖、果糖、蔗糖对该花色苷有一定的护色作用;金属离子K^+、Na^+、Mg^(2+)、Zn^(2+)对毛葡萄皮花色苷影响较小,Fe^(3+)、Cu^(2+)对该花色苷有明显的破坏作用。