3种植物多酚消毒效果与消毒持续性研究

DISINFECTION EFFECT AND DISINFECTION PERSISTENCE OF THREE KINDS OF PLANT POLYPHENOLS

基于植物多酚广泛的抑菌活性,实验选择3种常见植物多酚,对茶多酚、葡萄多酚和苹果多酚进行消毒效果实验,比较其消毒效果和消毒持续性。结果表明,茶多酚、葡萄多酚和苹果多酚都有一定的消毒效果,消毒持续性效果优劣为茶多酚>葡萄多酚>苹果多酚。对于直接采用天然水体作为水源的应急用水情况,茶多酚和葡萄多酚的适宜投加量为0.3 g/L,与水接触8 h,可使细菌总数达饮用标准。对于一般水厂,茶多酚、葡萄多酚投加量宜为0.2 g/L,苹果多酚投加量宜为0.3 g/L,对于特定水厂,茶多酚作为消毒剂的适宜投加量为0.1 g/L,与水接触20 min后均可使细菌总数达饮用标准,且可维持细菌总数2 d内不超标。

Based on the extensive antibacterial activity of plant polyphenols, three kinds of common plant polyphenols were selected including tea polyphenol, grape polyphenol and apple polyphenol to do disinfection effect experiments. Their disinfection effect and persistence were compared. The experimental results showed that tea polyphenol, grape polyphenol and apple polyphenol all had some disinfection effect. Disinfection persistent effect ranked like this： tea polyphenol 〉 grape polypbenol 〉 apple polyphenol. As for the emergent condition of using natural water as headwaters, the suitable dosage of tea polyphenol and grape polyphenol was 0.3 g/L. Contacting with water for 8 h, these two polyphenols could be used to make the total number of bacteria meet the drinking standard. For a general water plant, the suitable dosage of tea polyphenol and grape polyphenol was 0.2 g/L, while apple polyphenol was 0.3 g/L. For a specific water plant, the suitable dosage of tea polyphenol was 0.1 g/L. Contacting with water for 20 rain, this polyphenol could be used to make the total number of bacteria meet the drinking standard and could keep for 2 d.