膜分离技术提取山竺红色素的工艺优化.PDF

※工艺技术 食品科学 2010, Vol. 31, No. 10 133 张小曼，马银海* ，李 勇，鄢胜波 ( 昆明学院化学科学与技术系，云南昆明 650031) ：以山竺果皮为原料，对山竺红色素提取、纯化工艺进行研究。采用正交试验研究山竺红色素的提取条 件，结果表明最佳提取工艺条件为浸提温度50 ℃、浸提时间120min、料液比1:8(g/mL)。应用膜分离技术对山竺 红色素提取液进行除杂纯化，研究微滤预处理、操作压差和膜面流速对超滤膜通量的影响，确定超滤最佳纯化 工艺为操作压差0.12MPa 、膜面流速2500L/h 。超滤液经蒸发、干燥可得到纯度较高的山竺红色素，其色价达 22.15 ，为未经超滤提取色素色价的3.5 倍。 ：山竺；红色素；提取；纯化 Optimization of Extraction and Membrane Separation of Red Pigments from Garcinia mangostana L. ZHANG Xiao-man ，MA Yin-hai* ，LI Yong ，YAN Sheng-bo (Department of Chemical Science and Technology, Kunming University, Kunming 650031, China) Abstract ：A procedure based on acid extraction and membrane ultrafiltration separation was presented for the preparation of red pigments from the fruits of Garcinia mangostana L.. The optimal conditions for red pigment extraction were determined using a 3-factor, 3-level orthogonal array design to be extraction temperature 50 ℃ and material/liquid 1:8 (g/mL) for an extraction duration of 120 min. Microfiltration followed by ultrafiltration under the optimal conditions of transmembrane pressure 0.12 MPa and cross flow velocity 2500 L/h provided optimal purification of the obtained red pigment extract. The Garcinia mangostana L. red pigment product obtained after vacuum distillation and vacuum drying exhibited a color value of 22.15, which was 3.5 times higher than before purification. Key words ：Garcinia mangostana L.；red pigment ；extraction ；purification 中图分类号：TS202.3 文献标识码：A 文章编号：1002-6630(2010)10-0133-04 随现代生活水平的提高，食用色素已被广泛用于食 民间常用该果皮治疗腹泻、痢疾等疾病[4] 。近年来发现 品、药品、化妆品等行业。由于合成食用色素对人体 山竺果皮提取物化学成分主要为山酮(xanthone)类化合 健康不利，天然色素倍受人们的青睐。面对天然色素 物，具有抗HIV-1 RT 作用[5