Efficient extraction method of procyanidine in peanut skin

The invention discloses an efficient extraction method of procyanidine in peanut red skin, which comprises the following steps: adding petroleum ether into the peanut red skin, degreasing in a water bath kettle at 30 DEG C for 5 hours, centrifuging, discarding supernate, and drying filter residues to obtain degreased peanut red skin powder; and adding a low cosolvent into the degreased peanut red skin powder, uniformly mixing, carrying out ultrasonic extraction, and centrifuging to obtain clear liquid, namely the procyanidine liquid containing the peanut red skin. The method is low in solvent consumption, short in extraction time and high in extraction rate. 本发明公开了一种花生红衣中原花青素的高效提取方法，将向花生红衣中加入石油醚，于30℃水浴锅中脱脂5 h，离心，弃上清液，烘干滤渣，得脱脂后的花生红衣粉末；将低共溶剂加入到脱脂后的花生红衣粉末中混匀，进行超声波提取，离心，所得清液即为含有花生红衣原花青素液。本申请消耗溶剂少，提取时间短，提取率高。