溶剂法提取辣椒红色素和辣椒素的研究.pdfVIP

溶剂法提取辣椒红色素的研究 摘 要 辣椒可用作辛辣调味品，还可提取出具有药用价值的辣椒素和天然色素辣椒 红色素。 本实验以辣椒中红色素和辣椒素等组分精细产品的提取为目的，以溶剂法 为提取手段，深入开展了红辣椒的综合开发和利用研究。实验以干辣椒为原料制 备粗产品，根据不同的溶剂、固液比、回流次数来进行实验。根据色价法( 国标 法)测定辣椒色素。本文采用色价法测定辣椒色素的总量，根据选择特定的波长 和选用合适的消光系数，经过经验公式计算得出的红色素较准确的色价值。经过 实验和计算，得知乙醇作溶剂，固液比为 1：9，回流2 次的时候所得色价最高， 提取效果最好。然后用超声提取法和冷浸提法提取辣椒素，超声提取法进行均匀 设计实验，通过不同的溶剂用量，超声时间和超声功率进行优化，选出影响提取 最大的因素，用紫外光谱分析法计算其提取物中的辣椒素含量，并得出提取最佳 条件。由实验结果得知，超声提取法优于冷浸提法，影响其提取的最大因素为超 声功率，提取率最大的实验条件为每 g 辣椒粉的乙醇溶剂用量为 5mL，超声提取 时间为40min ，超声功率为 160w，在此条件下提取值为 8.032mg/g。 关键词：辣椒 红色素 辣椒素 提取 I 溶剂法提取辣椒红色素的研究 Abstract Capsaicin, an important natural pigment with high medicinal value, can be extracted from pepper which can be used as spicy condiment. The purpose of experiment is study the extraction capsanthin and capsaicinoids from chili by solvent methods, research the development and use of pepper. The raw materials is chili made of crude products. According to the different of solvent, the ratio of solids to liquids and the times of refluxing to operation. Determine the Capsaicin by color price method. choose the specially appointed wavelength and Extinction ,access the color price numerical by formula Calculation. From the results we know the high color price numerical of experiments conditions is the solvent is Ethanol,the ration of solids to liquids is 1 to 9,the times of refluxing is 2. Then extraction capsaicinoids by ultrasonic extraction and cold extraction. The ultrasonic extraction used uniform design experiments method. Optimal conditions through the different of solvent, time and power. Analysis t