| 胍乙酸壳聚糖的合成及其对黄瓜的保鲜研究 |
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| 引用本文： | 曾涵,赵淑贤,张雷,王永疆.胍乙酸壳聚糖的合成及其对黄瓜的保鲜研究[J].天然产物研究与开发,2011,23(3):504-507,525. |
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| 作者姓名： | 曾涵 赵淑贤 张雷 王永疆 |
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| 作者单位： | 1. 新疆师范大学生命科学与化学学院,乌鲁木齐,830054
2. 新疆农业大学附属中学,乌鲁木齐,830052 |
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| 摘 要： | 以自制的不同脱乙酰度的壳聚糖和1-氯胍乙酸为原料合成了胍乙酸壳聚糖,研究了胍乙酸壳聚糖对黄瓜的保鲜效果。结果表明,由脱乙酰度为96%的壳聚糖制得的胍乙酸壳聚糖平均分子量为5287。随着脱乙酰度的增加,黄瓜失重率的增加逐渐减缓,随着贮存时间延长总叶绿素含量先升高然后缓慢下降,而维生素C含量则一直缓慢下降;脱乙酰度为96%的壳聚糖制得的胍乙酸壳聚糖贮存35 d后,黄瓜的质量损失为0.7%;贮存20 d后,总叶绿素含量仍然可达1.34 mg/g;贮存时间20 d后,维生素C含量可达0.18 mg/g。
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| 关 键 词： | 胍乙酸壳聚糖 黄瓜 涂膜 保鲜 |
Synthesis of Guanidyl Acetic Acid Chitosan And Preservation Effect of Cucumbers |
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| ZENG Han,ZHAO Shu-xian,ZHANG Lei,WANG Yong-jiang.Synthesis of Guanidyl Acetic Acid Chitosan And Preservation Effect of Cucumbers[J].Natural Product Research and Development,2011,23(3):504-507,525. |
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| Authors: | ZENG Han ZHAO Shu-xian ZHANG Lei WANG Yong-jiang |
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| Institution: | ZENG Han1,ZHAO Shu-xian1,ZHANG Lei2,WANG Yong-jiang1 1College of Life Science and chemistry,Xing Jiang Normal University,Urumuqi 830054,China,2Accessory Middle School of Xin Jiang Agricultural School,Urumuqi 830052 |
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| Abstract: | Guanidyl acetic acid chitosan(GAAC) has been synthesized by self-made chitosan and chloro-guanidinyl acetate as raw materials and was used as cucumber preservative.The results from experiment indicated average molecular weight of guanidyl acetic acid chitosan prepared from chitosan with deacetylation of 96% was 5287 g/mol.Effects of coating with a series of different deacetylation of GAAC as fresh-keeper for cucumber stored at room temperature had been examined. Weight-loss rate slowed down gradually with i... |
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| Keywords: | guanidyl acetic acid chitosan(GAAC) cucumber coating film fresh-keeping |
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