魔芋葡甘聚糖酯化改性产物对空气中SO<sub>2</sub>吸附及抑菌效果研究

魔芋葡甘聚糖酯化改性产物对空气中SO₂吸附及抑菌效果研究

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pH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50℃，反应时间2 h，pH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%。

Abstract: 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 SO₂ 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 SO₂ adsorption and bacteriostasis are described. The conditions for esterifying konjac KGM were optimized and the natural,macromolecular,organic air purificant for adsorbing SO₂ 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 SO₂ adsorption was 98.7%, the rate of bacteriostasis was 86.3%.