板栗果皮色素的成分鉴定及提取

Component Identification and Extraction Process of Pigments in Castanea Mollissima Peel

为了提高板栗的综合利用价值,本文以湖北罗田板栗为原料,提取板栗果皮色素,化学分析结果表明色素含大量的缩合鞣质类成分。采用正交实验法对板栗果皮缩合鞣质的提取工艺进行了优化,得出板栗果皮缩合鞣质的最佳提取工艺,即以体积分数为40%的丙酮为提取溶剂,料液比1∶20(g/mL),提取温度40℃,提取时间60 min,在此条件下提取效果较好,提取率可达63.5%。

In this paper,the chestnut peel pigment was extracted from Huibei Luotian chestnut.Experiments showed that the main component of pigment was condensed tannin.The extraction process was optimized by orthogonal experiment method.The optimum process of tannins extraction was that using acetone with a volume fraction of 40%as the extraction solvent,the solid-liquid ratio was 1∶20,the extraction temperature was 40℃,the extraction time was 60 min.Under this condition the extraction effect was good,and the extraction rate reached 63.5%.