|本期目录/Table of Contents|

[1]桑娜,汪建英,孙雨,等.γ-聚谷氨酸/壳聚糖凝胶制备优化及保水固沙性能[J].江苏农业科学,2019,47(01):251-255.
 Sang Na,et al.Optimization of preparation process ofγ-polyglutamic acid/chitosan gel and its water-retention and sand fixing property[J].Jiangsu Agricultural Sciences,2019,47(01):251-255.
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γ-聚谷氨酸/壳聚糖凝胶制备优化
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《江苏农业科学》[ISSN:1002-1302/CN:32-1214/S]

卷:
第47卷
期数:
2019年第01期
页码:
251-255
栏目:
资源与环境
出版日期:
2019-01-05

文章信息/Info

Title:
Optimization of preparation process ofγ-polyglutamic acid/chitosan gel and its water-retention and sand fixing property
作者:
桑娜1 汪建英2 孙雨3 汪建明1 乔长晟23
1.天津科技大学食品营养与安全省部共建教育部重点实验室,天津 300457; 2.代谢控制发酵技术国家地方联合工程实验室,天津 300457;
3.天津北洋百川生物技术有限公司,天津 300457
Author(s):
Sang Naet al
关键词:
γ-聚谷氨酸壳聚糖吸水倍率土壤水分蒸发率土壤团聚体风蚀模数
Keywords:
-
分类号:
S157
DOI:
-
文献标志码:
A
摘要:
γ-聚谷氨酸(γ-PGA)和壳聚糖(CS)为原料制备一种用作保水固沙材料的凝胶,利用热重分析研究结构变化,以宁夏沙头坡沙土为材料测试其保水性能和抗风蚀性能。结果表明,最佳制备工艺为:γ-PGA与CS的添加比例为20 ∶ 80,其添加总量为3.0 g,乙酸浓度0.4 mol/L,乙酸添加量20 mL,此条件下吸水倍率为50.89±0.23。热重分析表明,γ-PGA和CS间发生了相互作用。由保水试验和抗风蚀试验可知,经8 d后γ-PGA/CS凝胶仍有一定保水性能和抗风蚀能力。使用γ-PGA/CS保水剂后土壤中水分蒸发速率明显降低,空白组15 d累计蒸发率达到93%,使用γ-PGA/CS保水剂后8 d累计蒸发率为70%;γ-PGA/CS保水剂添加量为0.1%时,风蚀模数从 35.6 g/(m2·min) 降低至27.3 g/(m2·min),固化层厚度为1.5 cm;使用γ-PGA/CS保水剂后土壤颗粒中>0.25 mm 团聚体含量增加13.7%。
Abstract:
-

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2017-10-11
基金项目:天津市科技支撑计划(编号:09ZCKFSH00800)。
作者简介:桑娜(1994—),女,山西长治人,硕士,主要从事动物资源开发与功能性食品研究。E-mail:shanxisangna@163.com。
通信作者:乔长晟,博士,教授,主要从事代谢控制发酵研究。E-mail:qiaochangsheng@163.com。
更新日期/Last Update: 2019-01-05