一株多菌灵降解菌包埋条件及降解特性

采用海藻酸钠(SA)和聚乙烯醇(PVA)对1株多菌灵降解菌进行包埋,并对最佳包埋条件及包埋后的降解效果进行研究.结果表明:SA包埋法的最佳条件为:菌液与2% SA按1:5体积比混合,在4% CaCl2溶液中室温交联24h.PVA包埋法的最佳条件为:菌液与10%PVA按1:5比例混合,在3%CaCl2溶液中室温交联24h.活化48h后,在30℃、 pH6的条件下,SA包埋的多菌灵降解菌对多菌灵的降解率可达80.4%.PVA包埋的降解菌的降解率为76.3%.

Study on embedding conditions and degradation characteristics of a carbendazim degrading bacteria

Embedding a carbendazim degrading bacteria with sodium alginate (SA) and polyvinyl alcohol (PVA), the optimal embedding conditions and the efficiency of degradation after embedding were studied. The optimal SA embedding condition is that the bacteria were mixed with 2% SA (1:5) and cross-link in 4% CaCl2for 24h at room temperature. The optimal PVA embedding condition is that the bacteria were mixed with 10% PVA (1:5) and cross-link in 3% CaCl2under the same condition. After 48h activation, at pH6and 30℃, the degradation rate of SA embedding carbendazim degrading bacteria can reach 80.4%, and the degradation rate of PVA embedding bacteria can reach 76.3%.