铁皮石斛多糖提取工艺优化研究
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浙江科技学院学报,第28卷第6期,2016年12月 Journal of Zhejiang University of Science and Technology Vol_28 No.6,Dec.2016 doi:10.3969/j.issn.1671-8798.2016.06.006 铁皮石斛多糖提取工艺优化研究 吴 迪 ,蔡成岗 ,沙如意 (1.浙江科技学院生物与化学工程学院,杭州310023;2.浙江省农产品化学与生物加工技术重点实验室,杭州310023; 3.浙江省农业生物资源生化制造协同创新中心,杭州310023) 摘 要:多糖为铁皮石斛中的主要有效成分,高效浸出有利于其进一步利用。以水为溶剂,对影响铁皮石斛多糖 提取的时间、温度及料液质量比等因素进行了优化研究,并应用苯酚一硫酸法和DNS法考察了铁皮石斛提取液总 糖和单糖的提取率,多糖提取率由两者之差计算得出。单因素实验和正交实验结果表明,料液质量比1:120、浸 提温度7O℃、浸提时间90 min时提取铁皮石斛多糖效果最好,在此工艺条件下,铁皮石斛多糖提取率为55.2 。 关键词:铁皮石斛;多糖;提取工艺;单因素实验;正交实验 中图分类号:R284.2 文献标志码:A 文章编号:1671—8798(2016)06~0444—06 Optimization of p0lysaccharide extraction conditions of Dendrobium officinale Kimura et Migo WU Di 。CAI Chenggang ' ~,SHA Ruyi ’。“ (1.School of Biological and Chemical Engineering,Zhej iang University of Science and Technology, Hangzhou 310023’,China;2.Zhejiang Provincial Key Laboratory for Chemical and Biological Processing Technology of Farm Produce,Hangzhou 310023,China;3.Zhejiang Collaborative Innovation Center of Chemical and Biological Manufacturing for Agricultural Biological Resources,Hangzhou 310023,China) Abstract:Polysaccharide is the most important functional ingredient in Dendrobium officinale Kimura et Migo,and it is important to extract the polysaccharides efficiently for the utilization of D.0fficinale Kimura et Migo.The extraction conditions such as extraction time,extraction temperature and the ratio of substrate to extraction solution of polysaccharide from D.officinale Kimura et Migo by water using single factor and orthogonal experiments were optimized.The extraction ratio of polysaccharide was calculated by subtract between the total polysaccharide and monosaccharide,which were analyzed by phenol sulfuric acid method and DNS method, 2O16—1O一22 收稿日期: 基金项目: 国家级大学生创新创业训练计划项目(201611057014);浙江科技学院科研启动基金项目(702103E03) 作者简介: 吴迪(1994 ),男,浙江省湖州人,2014级生物工程专业本科生。 通信作者: 蔡成岗,副教授,博士,主要从事食品生物技术研究。
第6期 吴迪,等:铁皮石斛多糖提取工艺优化研究 445 respectively.The single{actor experiments results showed that the ratio of substrate to water of 1:120,extraction temperature of 70℃and extraction time of 90 min are the optimal conditions,which are also of the optimal extraction conditions of orthogonal experiments.The identified experiments showed that under the optialm conditions the maximal extraction quantity is of 55.2 9,5. Keywords:Dendrobium officinale Kimura et Migo;polysaccharide;extracti