在水系和土壤系统中,以乙酶为媒介降解迪布和二甲基甲酸
Esin Balci1, Gulsah Sanli-Mohamed2, Aysun Sofuoglu3
1Izmir Institute of Technology, Faculty of Engineering, Department of Environmental Engineering, 35430, Urla/İzmir, Türkiye.
Chemosphere
|May 4, 2025
概括
有两种雌激酶,分别是 Bacillus subtilis 的雌激酶和 Geobacillus sp. 的雌激酶. 乙酶,在土壤和水环境中有效降解甲酸 (PAE). 地基菌 (Geobacillus sp.) 是一种植物. 乙酶在土壤中表现出更高的效率,突出了其对这些塑料污染物的生物修复潜力.
科学领域:
- 环境微生物学 环境微生物学
- 生物技术是生物技术.
- 环境化学环境化学
背景情况:
- 甲酸乙烯 (PAE) 是广泛使用的增塑剂,具有重大环境和健康问题.
- 酶性水解为像PAE这样的持久有机污染物的降解提供了一个有希望的途径.
研究的目的:
- 调查细菌亚细菌雌激酶和一种新型热基的Geobacillus sp.的疗效. 乙酶在降解二甲 (DBP) 和二甲基甲 (DEHP) 中.
- 为了比较这些雌激酶在水和土壤系统中的降解性能.
- 探索土壤特征对PAE降解效率的影响.
主要方法:
- 从Geobacillus sp.中分离和净化一种新型雌激酶. 来自地热地区的产品.
- 对Geobacillus sp.的表达方式 在大肠杆菌中的雌激酶.
- 在水和土壤 (农业和森林) 系统中进行的酶化水解实验.
- 对DBP和DEHP的降解百分比和降解率的分析.
- 分子对接以评估基质亲和力.
主要成果:
- 地基菌 (Geobacillus sp.) 是一种植物. 化酶在水系统中降解了30%的DBP和40%的DEHP,但在土壤中显著更高 (59%的DBP在土壤-1,98%的DBP在土壤-2).
- 在土壤-1 (72h) 和土壤-2 (2h) 中,Bacillus subtilis esterase完全降解了DBP.
- 这两种雌激酶在土壤中都显示出类似的DEHP降解 (在土壤-1中≤35%,在土壤-2中≤50%).
- 土壤特性显著影响了PAE降解,在Geobacillus sp.中观察到更高的效率. 与水性介质相比,土壤中的雌激酶.
- 分子对接表明DBP对这两种酶的亲和力比DEHP更高.
结论:
- 无论是细菌细菌雌激酶和地球细菌sp. 酶是PAE环境修复的有效生物催化剂.
- 地基菌 (Geobacillus sp.) 是一种植物. 酶在土壤环境中表现出增强的降解效率,这可能是由于其来自土壤微生物的原因.
- 酶基质的特异性和动态在不同的降解能力中起作用.
- 这些发现支持使用特定的酶对含有结的污染物进行生物修复.
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