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正交设计法优化木瓜果实多糖提取工艺

2018-09-17陈向阳王恒刘勤

安徽农学通报 2018年13期

陈向阳 王恒 刘勤

摘 要:通过热水浸提法和醇沉法对木瓜果实的多糖进行提取,探讨热水提取温度、料液比、热水提取时间以及醇沉时乙醇浓度4个因素对木瓜果实多糖提取的影响,并以多糖含量为指标,蒽酮-硫酸比色法为测定方法,采用正交试验法确定木瓜果实多糖提取的最佳工艺条件。结果表明,提取温度80℃,料液比1:60g/mL,提取时间60min,乙醇浓度80%,在此条件下多糖的提取率达到5.6%,工艺条件最佳,具有可行性和可靠性。

关键词:木瓜;多糖提取;正交试验;蒽酮-硫酸比色法

中图分类号 S661.6 文献标识码 A 文章编号 1007-7731(2018)13-0018-03

Abstract:In this study,polysaccharides was isolated from papaya fruit by hot water extraction and alcohol deposit.In hot water extraction,extraction temperature,the ratio of material to solution,extraction time and the concentration of ethanol as the factors affecting extraction ratio were studied.The content of the polysaccharide was determinated by phenol sulfuric acid method.Orthogonal test was conducted to select the optimal conditions for the determination of polysaccharide from papaya fruit.The optimum conditions of papaya fruit were:the optimal temperature for 80℃ baptized mention,best liquid ratio for 1:60g/mL,best extraction time for 60 minutes,best ethanol concentration is 80%.Under these conditions,the extraction efficiency of polysaccharide was 5.6%.The feasibility and reliability of this optimum conditions were verified through experiments.The experiments had provided the strongest assurance on the study of polysaccharides content of Chaenomeles sinensis.

Key words:Papaya fruit;Extraction of polysaccharides;Orthogonal test;Anthrone-sulphuric acid colorimetry

1 引言

木瓜(Chaenomeles sinensis(Thouin)Koehne),又称皱皮木瓜、贴梗海棠,属蔷薇科木瓜属,主要产于山东、安徽、湖北等地[1]。木瓜具有多种功效,可以增强体质,降低血压,有一定作用肠胃,有效预防中暑[2],改善脚气问题,治疗风湿病,还可以有效防治霍乱等疾病。木瓜含有许多有益于人体健康的成分,如维生素、糖类、矿物质、黄酮、蛋白酶类、多种有机酸等,有很高的药用价值和营养价值[3]。

木瓜多糖(stauntonia chinensis polysaccharides,SCP)是从药食两用植物木瓜中分离提取的重要活性成分,研究表明SCP具有显著的抗氧化活性,对实验性小鼠肝损伤有保护作用,而且木瓜多糖还能显著降低血小板的聚集,起到抗凝血的作用[4-7]。当前对多糖研究很多,但对木瓜多糖的提取工艺还缺乏系统的研究,本文通过热水浸提法和醇沉法提取多维1号木瓜果实多糖,利用正交设计法优化多维1号木瓜果实多糖的提取工艺,确定其多糖提取的最佳工艺条件,提高木瓜的经济价值和综合开发价值。……

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