Growth of Pseudomonas and Bacillus biofilms on pretreated polypropylene surface
Growth of Pseudomonas and Bacillus biofilms on pretreated polypropylene surface
复制标题
DOI：
10.1016/j.ibiod.2010.06.002
复制
发表时间：
2010-09-01
影响因子：
4.8
通讯作者：
Doble, Mukesh
中科院分区：
文献类型：
--
作者：
Arkatkar, Ambika;Juwarkar, Asha A.;Doble, Mukesh
未经处理和Aquaregia。采用芬顿、热处理和短紫外光处理的0.05 mm厚聚丙烯薄膜，在基本培养基中分别用4种土壤培养物（固氮假单胞菌、施氏假单胞菌、枯草芽孢杆菌和弯曲芽孢杆菌）进行了12个月的体外生物降解试验。偶氮类青霉和B. B.枯草杆菌相对疏水，产生生物表面活性剂，并在具有相对较高碳水化合物和蛋白质的聚合物上形成生物膜。所有生物都利用聚合物作为碳源。在短UV处理的聚合物暴露于B的情况下观察到最高的重量损失（2.5%）。一年后的flexus羰基指数在一年的情况下，预处理的聚合物和未处理的聚合物的情况下增加，表明只有非生物氧化在没有预处理。表面能的增加表明，聚合物变得更加亲水性相比，原来的。斯氏疫霉对聚合物的影响不大。(C)2010爱思唯尔有限公司版权所有。
Unpretreated and Aquaregia. Fenton, thermal and short UV pretreated polypropylene films of 0.05 mm thickness were subjected to biodegradation in vitro in minimal medium with four soil cultures, namely Pseudomonas azotoformans, Pseudomonas stutzeri, Bacillus subtilis and Bacillus flexus separately for 12 months. P. azotoformans and B. subtilis are relatively hydrophobic, produce biosurfactant and form biofilm on the polymer with comparatively higher carbohydrate and protein than the other two organisms. All the organisms make use of the polymer as their carbon source. Highest weight loss (2.5%) was observed in the case of short UV treated polymer exposed to B. flexus after one year. The carbonyl indices decreased in one year in the case of pretreated polymer and increased in the case of untreated polymer, indicating only abiotic oxidation in the absence of pretreatment. Increase in surface energy indicated that the polymer became more hydrophilic when compared to the original. P. stutzeri had marginal effect on the polymer. (C) 2010 Elsevier Ltd. All rights reserved.