从藜豆中提取天然黑色素的工艺研究

摘要

The extraction of natural melanin from mucuna macrocarpa wall was studied. Based on the experiment, the melanin was suitable to be extracted with 4% NaOH at 60 t for 40 min,precipitated when pH was 2. After further purification,3.62% yield of melanin was obtained. With UV and IR analysis,the melanin has the structure model of catechol.%以我国南方资源丰富的藜豆为原料,对藜豆中的天然黑色素提取工艺进行了研究,得出了藜豆黑色素的最佳提取条件:用4％ NaOH溶液于60℃超声浸提40 min,调节pH =2,析出黑色素,得率为3.62％.由紫外和红外波谱分析藜豆黑色素具有邻苯二酚型结构.