霍氏肠杆菌介导的聚对苯二甲酸乙二酯生物降解：一种处理塑料垃圾的可持续方法。
Enterobacter hormaechei mediated biodegradation of PET: a sustainable approach to plastic waste.
作者信息
Santhosh Selvakumar, Narenkumar Jayaraman, Vadakkan Kayeen, Nandini M S, Rajasekar Aruliah, Rajamohan Rajaram
机构信息
Environmental Molecular Microbiology Research Laboratory, Department of Biotechnology, Thiruvalluvar University, Serkkadu, Vellore, Tamil Nadu, 632115, India.
Department of Biochemistry, Saveetha Medical College and Hospitals, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai, Tamil Nadu, 602105, India.
出版信息
Biodegradation. 2025 Sep 19;36(5):88. doi: 10.1007/s10532-025-10183-9.
This study investigates the biodegradation of polymer polyethylene terephthalate (PET) by Enterobacter hormaechei, which was isolated from the Chennai coastal region, India. The degradation was characterized using Fourier transform infrared spectroscopy (FT-IR), X-Ray Diffraction (XRD), Raman spectroscopy, Particle Size analyzer, and Field emission scanning electron microscopy (FESEM) coupled with EDX. FT-IR revealed the formation of C-O (ether group) and the C-H (methylene group) bonds. Raman spectroscopy confirmed the emergence of a new formation group at the 1216 cm Raman shift. XRD analysis revealed reduced crystallinity and structural alterations in PET, indicating bacterial-mediated modification of the polymer structure. FESEM analysis revealed significant morphological changes, accompanied by a 60.0% reduction in carbon content, corresponding to 65.5% PET degradation. In conclusion, Enterobacter hormaechei can efficiently utilise PET as a carbon source and highlighting its potential in polymer degradation.
本研究调查了从印度钦奈沿海地区分离出的霍氏肠杆菌对聚合物聚对苯二甲酸乙二酯（PET）的生物降解作用。使用傅里叶变换红外光谱（FT-IR）、X射线衍射（XRD）、拉曼光谱、粒度分析仪以及与能谱仪联用的场发射扫描电子显微镜（FESEM）对降解过程进行了表征。FT-IR显示形成了C-O（醚基）和C-H（亚甲基）键。拉曼光谱证实了在1216 cm拉曼位移处出现了一个新的形成基团。XRD分析表明PET的结晶度降低且结构发生改变，这表明聚合物结构发生了细菌介导的修饰。FESEM分析显示出显著的形态变化，同时碳含量降低了60.0%，对应PET降解率为65.5%。总之，霍氏肠杆菌能够有效地将PET用作碳源，并突出了其在聚合物降解方面的潜力。
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