Article
Environmental Sciences
Jianjun Ren, Xiancheng Qi, Jian Zhang, Dongze Niu, Yunpeng Shen, Changyong Yu, Junqiang Zhi, Chongqing Wang, Xingmei Jiang, Wenfan Zhang, Chunyu Li
Summary: Continuous and excessive usage of erythromycin leads to environmental pollution and poses a health risk to humans. In this study, a novel erythromycin-degrading bacterial strain, W7, was isolated from sewage sludge and identified as Paracoccus versutus. The strain efficiently degraded erythromycin and completely eliminated it from erythromycin fermentation residue within specific timeframes. Additionally, erythromycin esterase (EreA) was found to be involved in erythromycin metabolism in this strain.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Environmental Sciences
Sarah Al-Rashed, Najat Marraiki, Asad Syed, Abdallah M. Elgorban, Kollur Shiva Prasad, Chandan Shivamallu, Ali H. Bahkali
Summary: Paracoccus sp. DDT-21, isolated from sea water, is able to degrade over 80% of DDT at 50mg/L concentration in 72 hours, and shows tolerance to DDT stress. The optimal conditions for DDT degradation by this strain include pH 7.0, 35 degrees C, 6g/L yeast extract, and 6% glucose, with a degradation rate of approximately 90%.
Article
Biotechnology & Applied Microbiology
Hassan Mohamed, Aabid Manzoor Shah, Yusuf Nazir, Tahira Naz, Shaista Nosheen, Yuanda Song
Summary: In this study, endophytic fungi were screened for efficient in vitro PVA biodegradation, with four strains showing high PVA degradation rates. The most promising strain OVR-5 showed potential for PVA degradation and produced various enzymes. This study provides insights into the potential applications of fungus-based methods for plastic waste degradation.
WORLD JOURNAL OF MICROBIOLOGY & BIOTECHNOLOGY
(2022)
Article
Environmental Sciences
Saliha Ahmad, Hassan Javed Chaudhary, Christos A. Damalas
Summary: A dimethoate-degrading bacterium Brucella sp. was isolated from contaminated agricultural soil in Multan, Pakistan, showing high tolerance to the pesticide and promoting plant growth. After optimization of growth parameters, the strain exhibited promising degradation capabilities under different concentrations of dimethoate.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Microbiology
Anutthaman Parthasarathy, Renata Rezende Miranda, Nathan C. Eddingsaas, Jonathan Chu, Ian M. Freezman, Anna C. Tyler, Andre O. Hudson
Summary: The widespread use of plastics has led to their increasing presence in the environment and subsequent pollution. Some microorganisms can degrade plastics and studying their metabolic pathways can help understand the degradation mechanisms. This study reveals the enzymatic degradation mechanism of polystyrene by Exiguobacterium sp. RIT 594 and confirms the importance of oxygen in the degradation process.
Article
Biochemistry & Molecular Biology
Selvakumar Sakthivel, Anand Raj Dhanapal, Radha Palaniswamy, Soundarya Dhandapani, Mathur Nadarajan Kathiravan
Summary: This study identified a novel bacterial species isolated from pesticide-contaminated soil that enhances endosulfan degradation. The optimal conditions for biodegradation were determined, and it was found that endosulfan acted as the primary carbon source for bacterial growth. The bacterial isolate Pseudomonas sp. MSCAS BT01 showed promising potential for bioremediation of endosulfan-contaminated environments.
APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY
(2022)
Article
Biotechnology & Applied Microbiology
Neha Sharma, Vinay Kumar, S. S. Maitra, Sivarama Krishna Lakkaboyana, Soontarapa Khantong
Summary: This study focuses on the biodegradation kinetics of DBP by Acinetobacter sp.33F in pristine agricultural soils and demonstrates its potential as a promising candidate for the removal of phthalate esters from contaminated agricultural sites.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Environmental Sciences
Ju Hye Baek, Kyung Hyun Kim, Yunhee Lee, Sang Eun Jeong, Hyun Mi Jin, Baolei Jia, Che Ok Jeon
Summary: A new bacterium, Rhodococcus sp. S2-17, was isolated from contaminated sediment and found to have the ability to completely degrade the emerging organic pollutant benzophenone-3 (BP-3). Through various analyses and studies, the catabolic pathway and genes involved in BP-3 degradation were identified. It was discovered that strain S2-17 may degrade BP-3 by recruiting the cytochrome P450 complex and alpha/beta hydrolase enzymes.
ENVIRONMENTAL POLLUTION
(2022)
Article
Agricultural Engineering
Rajesh Kona, Pavankumar Pallerla, Ramunaidu Addipilli, Prabhakar Sripadi, S. Venkata Mohan
Summary: The study evaluated the biosynthesis of lutein and beta-carotene by Scenedesmus sp. SVMIICT1 under different light intensities, finding that high lutein content was observed at 50 and 500 mu E/m(2)/s conditions. The study also showed that light intensities altered photosystem II and photosystem I in the algae.
BIORESOURCE TECHNOLOGY
(2021)
Article
Biology
Abdul Fattah Shaima, Nazlina Haiza Mohd Yasin, Nazlina Ibrahim, Mohd Sobri Takriff, Darvien Gunasekaran, Mahmud Y. Y. Ismaeel
Summary: Microalgae are promising sources of bioactive compounds for various applications. In this study, the antimicrobial properties and bioactive compounds of local microalgae were investigated. Chlorella sp. UKM8 methanol extract showed the highest antibacterial activity and contained phenol, hexadecanoic acid, phytol, and other compounds known for their antimicrobial activity. Further studies are needed to purify and understand the mechanism of these compounds.
SAUDI JOURNAL OF BIOLOGICAL SCIENCES
(2022)
Article
Polymer Science
Emmanouil Tsochatzis, Joao Alberto Lopes, Helen Gika, Georgios Theodoridis
Summary: A GC-MS method was used to screen and evaluate the chemical compounds generated during the biodegradation of polystyrene (PS) with Tenebrio molitor larvae, identifying various compounds including trimers, volatiles, and non-intentionally added substances. Bioactive molecules like fatty acids and amides were also identified in the biomass of the insects, suggesting enzymatic and biochemical activity during the degradation process. The overall degradation rate of PS was found to be 13%, highlighting the potential of biorecycling with these insects.
Article
Chemistry, Analytical
Karel Kudlacek, Jacopo La Nasa, Erika Ribechini, Maria Perla Colombini, Karel Nesmerak
Summary: A multi-analytical approach was used for the first time to study six historical ointments from the 18th century of Capuchin Monastery in Prague, Czech Republic. The analysis involved gas chromatography, mass spectrometry, solid-phase microextraction, liquid chromatography, and flow injection analysis to identify ingredients and determine the chemical modifications. The results provided insights into the ointments' formulation and alteration of chemical compounds.
MICROCHEMICAL JOURNAL
(2023)
Article
Engineering, Environmental
Chenlin Wang, Yanfei Zheng, Ruikang Li, Qingrong Yin, Chunfeng Song
Summary: This study investigated the toxicity, degradation, and metabolic pathway of cefradine in two microalgal species. The results showed that both microalgae exhibited excellent degradation performance for cefradine and had the capacity to restore growth in high concentrations. Hydrolysis and biodegradation were identified as the main mechanisms of cefradine degradation on algae. The study provides valuable insights into the environmental risks of cefradine in wastewater and the efficient removal of cefradine by microalgae.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2022)
Article
Environmental Sciences
Mette Torsbjerg Moller, Heidi Birch, Karina Knudsmark Sjoholm, Rikke Hammershoj, Karen Jenner, Philipp Mayer
Summary: Testing and assessing the persistency, bioaccumulative and toxic properties of UVCBs pose major technical and analytical challenges. This study successfully combined whole substance biodegradation testing with constituent-specific analytics to determine primary biodegradation kinetics of the main UVCB constituents. The experiments revealed the degradation rate constants of the main constituents and the absence of nonpolar degradation products.
Article
Biochemical Research Methods
Peng Wang, Shouxin Liu, Xiaochun Wang, Qinqin Cong, Jialin Lu
Summary: The Paracoccus sp. strain showed high efficiency in degrading penicillin G without additional catalysts. Under visible light irradiation, the rate of penicillin G biodegradation was accelerated to reach 100% in 12 hours. Four key intermediates produced during penicillin G degradation were isolated and identified by LC-MS, H-1 NMR, and C-13 NMR.
JOURNAL OF BIOLOGICAL ENGINEERING
(2021)
Article
Multidisciplinary Sciences
Lanxi Su, Yunze Ruan, Xiujuan Yang, Kang Wang, Rong Li, Qirong Shen
SCIENTIFIC REPORTS
(2015)
Article
Plant Sciences
Xiujuan Yang, Chao Xue, Lanxi Su, Yifan Cao, Hongmei Li, Kang Wang, Rong Li, Qirong Shen
SOIL SCIENCE AND PLANT NUTRITION
(2018)
Article
Soil Science
Li Rong, Zheng Jin-Wei, Ni Bin, Chen Kai, Yang Xiu-Juan, Li Shun-Peng, Jiang Jian-Dong
Article
Multidisciplinary Sciences
Xiujuan Yang, Xuan Wang, Kang Wang, Lanxi Su, Hongmei Li, Rong Li, Qirong Shen
Article
Public, Environmental & Occupational Health
Xiujuan Yang, Bijun Cheng, Yi Gao, Hongmei Zhang, Liangpo Liu
Summary: This study analyzed the contamination status of heavy metals in soil and maize near coal mines, and evaluated the associated human health risk. The results showed that nickel was the most severely polluted heavy metal, and its concentration in maize exceeded the risk control standard in China. The exposure to heavy metals in soil and maize posed health risks to residents, especially children. Ingestion of heavy metals had the highest health risk, followed by dermal contact and inhalation. Arsenic and chromium in soil, and chromium and nickel in maize had the greatest impact on human health risk.
FRONTIERS IN PUBLIC HEALTH
(2022)
Article
Engineering, Environmental
Xiujuan Yang, Bijun Cheng, Ziyue Wang, Shuhan Wang, Liangpo Liu, Yi Gao, Hongmei Zhang
Summary: This study investigated the contamination degree, sources, and contributions of potentially toxic elements (PTEs) in the soil of Shanxi Province, one of China's major coal-producing provinces. It also evaluated the quality of the soil ecology by examining the nematode community. The results showed that coal mining activities were the main factor influencing PTEs distribution, and certain nematode genera could serve as bioindicators for PTEs contamination. Additionally, concentrations of certain elements in the soil significantly affected nematode abundance and diversity indices.
ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
(2022)
Article
Biotechnology & Applied Microbiology
Shaofeng Zhou, Wenwen An, Cuifen Gan, Meiying Xu
Summary: Bacteria generate and release extracellular reactive oxygen species (eROS), which significantly contribute to the natural ROS pool and play a crucial role in metabolic interactions of bacteria with their environment. Understanding the behavior of eROS-generating bacteria and its environmental implications is of great importance in the cycling of biogeochemical elements, transformation of organic matter, and regulation of antibiotic resistance genes.
INTERNATIONAL BIODETERIORATION & BIODEGRADATION
(2024)
Article
Biotechnology & Applied Microbiology
Ji-Dong Gu, Tim Ford, Bryce Mitton, Ralph Mitchell
Summary: Plastics and microplastics are widely present and accumulating in the environment, leading to increasing public attention. In addition to packaging plastics, materials from industries such as electronics, space and aviation are also accumulating, but receiving less attention. The production of degradable and biodegradable plastics is seen as a way to reduce environmental impacts, but enhancing the non-degradability of functional polymers is also a feasible option. Microbial colonization and deterioration pose significant challenges to these materials.
INTERNATIONAL BIODETERIORATION & BIODEGRADATION
(2024)
Article
Biotechnology & Applied Microbiology
Justyna Bohacz, Michal Mozejko
Summary: This study evaluated the keratinolytic activity of 37 strains of Trichophyton ajelloi and found that pigmented strains isolated from loamy soil were more efficient in degrading native feather keratin, while non-pigmented strains isolated from chernozem showed better abilities. The keratinolytic activity increased over time, as evidenced by the increase in extracellular keratinase activity and release of soluble proteins and peptides. Protease activity peaked in the first 7 days and again on day 28 of culture. The release of ammonium and sulfate ions, associated with an increase in pH, reached its maximum on day 21. Three pigment-producing strains were among the most active in releasing large amounts of ammonium and sulfate ions. The biodegradation of feather waste by Trichophyton ajelloi strains can be used to produce fertilizers suitable for plants with high sulfur requirements.
INTERNATIONAL BIODETERIORATION & BIODEGRADATION
(2024)
Article
Biotechnology & Applied Microbiology
Joseph M. Suflita, Brenda J. Little
Summary: This article reviews the major achievements of the International Biodeterioration & Biodegradation Society (IBBS) on its 50th anniversary and provides recommendations for addressing new challenges and developments based on personal experiences.
INTERNATIONAL BIODETERIORATION & BIODEGRADATION
(2024)
Article
Biotechnology & Applied Microbiology
Zhenyan Lin, Tuo Jin, Xin Xu, Xiao Yin, Dan Zhang, Mengjiao Geng, Chunyu Pang, Gongwen Luo, Lizhi Xiong, Jianwei Peng, Jiangchi Fei
Summary: The incomplete recycle of residual mulch film (RMF) in recent years has led to an increase in plastic fragments in soil, posing a serious threat to the soil ecological environment. In this study, seven potential plastic-degrading microorganisms were screened and identified from film-mulched vegetable fields. The degradation ability experiments showed that both single strains and mixed strains demonstrated varying levels of degradation of RMF.
INTERNATIONAL BIODETERIORATION & BIODEGRADATION
(2024)
Article
Biotechnology & Applied Microbiology
Tiina Belt, Michael Altgen, Muhammad Awais, Martin Nopens, Lauri Rautkari
Summary: This study investigated the degradation of heat-treated wood by brown rot fungi and found that the decay increased the hygroscopicity of wood in the decaying state. Furthermore, it was observed that heat-treated samples were more susceptible to fungal decay compared to untreated samples, which may be related to the increase in moisture content.
INTERNATIONAL BIODETERIORATION & BIODEGRADATION
(2024)
Article
Biotechnology & Applied Microbiology
Marta Cicardi, Davide Bernasconi, Luca Martire, Linda Pastero, Giulia Caneva, Sergio E. Favero-Longo
Summary: This study investigated the phenomenon of Centimetric circular areas Uncolonized by Microbial Biofilms (CUMBs) on natural and heritage stone surfaces. The analysis revealed a compatibility in distribution and size between CUMBs and lichen thalli, suggesting a lichen origin for some CUMBs. Microscopic analysis also showed similar modifications in marble layers beneath CUMBs and lichens, indicating a possible alteration of stone properties by lichens.
INTERNATIONAL BIODETERIORATION & BIODEGRADATION
(2024)