| 一步法制备羧甲基灵芝多糖 |
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| 引用本文： | 王周,敖宏,胡丽萍,黄生权,宁正祥. 一步法制备羧甲基灵芝多糖[J]. 现代食品科技, 2011, 27(3): 341-345,312 |
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| 作者姓名： | 王周 敖宏 胡丽萍 黄生权 宁正祥 |
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| 作者单位： | 1. 华南理工大学轻工与食品学院,广东广州,510640
2. 无限极(中国)有限公司,广东江门,529156 |
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| 摘 要： | 通过半合成羧甲基灵芝多糖,以达到充分利用灵芝和提高灵芝多糖得率的目的.利用贝利微粉机获得灵芝超微粉;在乙醇-水溶液中一步法半合成羧甲基灵芝多糖,采用铜盐沉淀法测定其取代度.通过FTIR鉴定了羧甲基灵芝多糖的结构;筛选出制备羧甲基灵芝多糖的最佳条件:乙醇浓度80 %,NaOH浓度2.5 mol/L,氯乙酸浓度1.55 m...
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| 关 键 词： | 灵芝 多糖 羧甲基 溶解性 |
One-step Preparation of Carboxymethyl Polysaccharides of Ganoderma Lucidum |
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| WANG Zhou,AO Hong,HU Li-ping,HUANG Sheng-quan,NING Zheng-xiang. One-step Preparation of Carboxymethyl Polysaccharides of Ganoderma Lucidum[J]. Modern Food Science & Technology, 2011, 27(3): 341-345,312 |
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| Authors: | WANG Zhou AO Hong HU Li-ping HUANG Sheng-quan NING Zheng-xiang |
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| Affiliation: | 1(1.College of Light Industry and Food Sciences,South China University of Technology,Guangzhou 510640,China)(2.Infinitus(China) Co.,Ltd,Jiangmen 529156,China) |
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| Abstract: | In order to make full use of Ganoderma lucidum and increase the yield of polysaccharides,carboxymethylation of polysaccharides was carried out.Bailey powder machine was applied to make ultrafine Ganoderma lucidum powder(UGLP).Carboxymethylation was progressed in ethanol-water medium by one-step method and the degree of substitution(DS) was determined by copper salt precipitation method.The structure of carboxymethyl Ganoderma lucidum polysaccharides(CGLP) was identified by FTIR.And the optimal conditions were: ethanol concentration 80%,2.5 mol/L concentration of NaOH,1.55 mol/L concentration of monochloroacetic acid(MAC),reaction temperature 55 ℃,reactio n time 4 h,and the DS was 0.81 under these conditions.In addition,water-solubility of CGLP was proportional to the carboxymethyl DS and the yield of water-soluble polysaccharides was about 40%.Tthe one-step carboxymethylation of GLP was an effective method to enhance the yield of polysaccharides and their water-solubility. |
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| Keywords: | Ganoderma lucidum polysaccharide carboxymethyl solubility |
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