摘要
以魔芋葡甘聚糖为原料 ,分别采用苯甲酸、醋酸和没食子酸对魔芋葡甘聚糖进行酯化改性 ,研究了改性 p H值、温度及改性处理时间对改性产物吸附空气中 SO2 和抑菌效果的影响 ,优化了改性工艺参数 ,得到了有较好使用效果的天然的有机大分子空气净化材料。研究结果表明 :当采用苯甲酸为魔芋葡甘聚糖酯化改性剂时 ,改性产物对空气中的 SO2 吸附效果和抑菌作用效果优于使用醋酸和没食子酸的改性产物。其改性处理温度 5 0℃ ,反应时间 2 h,p H值 3,改性反应产物对空气中 SO2 的吸附率可达 98.7%,抑菌率可达到 86 .3%。
The konjac glucomannon was used as the experimental material in this paper. The effect of esterified modified konjac glucomannon (KGM) by benzoic acid, acetic acid and gallic acid on SO 2 adsorption and bacteriostasis in air was studied. The conditions such as temperature,pH value and time of esterified modification of konjac KGM to maximize the SO 2 adsorption and bacteriostasis are described. The conditions for esterifying konjac KGM were optimized and the natural,macromolecular,organic air purificant for adsorbing SO 2 and bacteriostasis in air was obtained. It is showed that the conditions for incubation of modifying KGM were temperature 50℃, pH 3.0, time 2 h with benzoic acid. The rate of SO 2 adsorption was 98.7%, the rate of bacteriostasis was 86.3%.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
2003年第5期122-125,共4页
Transactions of the Chinese Society of Agricultural Engineering
基金
Key Science and Technology Program of HubeiProvince(2 0 0 2 AA2 0 5A)
关键词
魔芋萄甘聚糖
改性
酯化
SO2吸附
抑菌
konjac glucomannon (KGM)
modification
esterification
adsorption of SO 2
bacteriostasis
