Article
Environmental Sciences
Lingyu Wen, Yiqun Huang, Weiwei Wang, Lige Zhang, Jijun Xu, Zhao Li, Ping Xu, Hongzhi Tang
Summary: Polycyclic aromatic hydrocarbons (PAHs) are widely present organic pollutants in the environment, and bioremediation is considered to be an effective method for their degradation. In this study, a new strain of Diaphorobacter sp. called MNS-0 was found to be capable of degrading various PAHs. The strain exhibited tolerance to high concentrations of NaCl and alkaline conditions, while maintaining its degradation activity. Therefore, it can be potentially used for the bioremediation of PAHs pollution even in harsh environments such as saponification wastewater.
ENVIRONMENTAL RESEARCH
(2022)
Article
Microbiology
Hui Zhao, Yujun Gu, Xiangyu Liu, Juan Liu, Michael Gatheru Waigi
Summary: The study shows that root-associated bacterium Phe15 can degrade PAHs in contaminated soil and has good colonization and performance in white clover plants, which may help reduce plant pollution from PAHs in contaminated areas.
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Engineering, Environmental
Diankun Cao, Yang Huo, Liang Zhang, Ying Zhang, Zhiruo Zhang, Mingxin Huo
Summary: Based on the experimental results, DS-1 strain was found to be an efficient microbe for the degradation of phenanthrene (PHE). Genome analysis revealed that DS-1 degraded PHE via the phthalic acid pathway. These findings have expanded the knowledge of Klebsiella sp. as an active PHE degrader in wastewater and indicate its potential in the bioremediation of PHE-contaminated aquatic environments.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Biology
Jose Martin Marquez-Villa, Juan Carlos Rodriguez-Sierra, Nayem Amtanus Chequer, Nubia Noemi Cob-Calan, Jose Quinatzin Garcia-Maldonado, Santiago Cadena, Emanuel Hernandez-Nunez
Summary: Microbial degradation of aromatic hydrocarbons is a promising technology due to its economic efficiency and safety. However, the study of cyanobacteria-bacterial mutualistic interactions in this field is still limited. This research evaluated the phenanthrene biodegradation capacity of a consortium dominated by Fischerella sp. and identified the microbial diversity involved. The consortium was able to degrade up to 92% of phenanthrene in five days, with Fischerella sp. as the dominant strain and other bacteria also potentially involved in the degradation process.
Article
Biotechnology & Applied Microbiology
P. E. Sineli, H. M. Herrera, J. D. Aparicio, D. S. Guerrero, M. A. Polti, J. S. Davila Costa
Summary: The research demonstrated that Streptomyces sp. MC1 has the genetic and physiological potential to remove Cr(VI) or degrade phenanthrene. The metabolic versatility of the strain was confirmed by two metabolic models, and a connection between phenanthrene degradation and synthesis of specialized metabolites was suggested. The genetic and proteomic profiles obtained for Streptomyces sp. MC1 can be used as a model to predict the potential of other Streptomyces strains in bioremediation processes.
JOURNAL OF APPLIED MICROBIOLOGY
(2021)
Article
Environmental Sciences
Haiping Gu, Kang Yan, Qi You, Yuanzhi Chen, Yunhui Pan, Haizhen Wang, Laosheng Wu, Jianming Xu
Summary: The study demonstrates the efficient degradation of phenanthrene in soil by bioaugmentation with Massilia sp. WF1 and Phanerochaete chrysosporium, especially in aqueous and autoclaved soil cultures. However, indigenous microorganisms in un-autoclaved soil play a dominant role and weaken the synergistic action of the co-culture. The findings provide scientific support for the bioremediation of polycyclic aromatic hydrocarbons in the environment.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Biochemistry & Molecular Biology
Zhimao Mai, Lin Wang, Qiqi Li, Yingting Sun, Si Zhang
Summary: Gordonia sp. SCSIO19801 is a bacterium isolated from the South China Sea that can effectively utilize phenanthrene as the sole carbon source. It degrades phenanthrene via the salicylate metabolic pathway and has the ability to utilize other aromatic compounds. These characteristics make it a potential candidate for biodegradation of petroleum hydrocarbons in marine environments.
BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS
(2021)
Article
Environmental Sciences
Hadiyanto Hadiyanto, Muslihuddin Muslihuddin, Adian Khoironi, Wahyu Zuli Pratiwi, Muthia'ah Nur Fadlilah, Fuad Muhammad, Norma Afiati, Inggar Dianratri
Summary: The study revealed that both PET and salinity can decrease the growth rate of Spirulina sp. and reduce nutrient removal rates. However, the presence of salinity in the medium with added PET demonstrated that Spirulina sp. can degrade PET, showing its potential as a source of polysaccharides.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Zulfiqar Ahmad, Xuezhi Zhang, Muhammad Imran, Hua Zhong, Shaista Andleeb, Rabail Zulekha, Guansheng Liu, Iftikhar Ahmad, Frederic Coulon
Summary: The study found that the biosurfactant produced by Klebsiella sp. KOD36 showed stability and efficacy under extreme conditions, enhancing the solubilization and degradation of phenanthrene in various environmental matrices. The biosurfactant displayed high functional stability and performance under extreme conditions, demonstrating great potential for remediation applications in harsh environmental conditions.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2021)
Article
Environmental Sciences
Haiping Gu, Jie Yan, Yuhao Liu, Xuewei Yu, Yan Feng, Xuanyi Yang, Su Shiung Lam, Mu. Naushad, Cheng Li, Christian Sonne
Summary: Bioaugmentation was used to obtain a microbiome capable of degrading polycyclic aromatic hydrocarbons (PAHs). The study found that acclimating microorganisms to soil supplemented with phenanthrene led to the enrichment of PAH-degrading bacteria, including Actinobacteriota and genera such as Streptomyces, Rhodococcus, Nocardioides, Sphingomonas, and Mycobacterium. The degradation efficiency of phenanthrene in aqueous and soil cultures inoculated with phenanthrene-acclimated soil was found to be high. This research provides theoretical and practical support for the bioremediation of PAHs in the environment.
ENVIRONMENTAL RESEARCH
(2023)
Article
Biotechnology & Applied Microbiology
Xiaoyong Liao, Junpeng Luo, Daniel P. Cassidy, You Li, Huan Tao, Yishu Zhao
Summary: An Acidovorax strain capable of efficiently degrading high concentrations of phenanthrene (PHE) was isolated and investigated, revealing key metabolites and genes related to PHE biodegradation. The strain showed high tolerance to PHE and has potential for bioremediation of heavy PAH contamination.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2021)
Article
Microbiology
Xiao-Yan You, Jin-Hui Liu, Hui Tian, Yue Ding, Qing-Yun Bu, Kang-Xi Zhang, Guang-Yue Ren, Xu Duan
Summary: BJC16-A38(T) is a novel species of the genus Mucilaginibacter isolated from a permafrost wetland soil sample, showing phenanthrene biodegradation activity in the MM medium.
CURRENT MICROBIOLOGY
(2022)
Article
Environmental Sciences
Jiao Sun, Zuotao Zhang, Hui Wang, Matthew J. Rogers, Haijiao Guo, Jianzhong He
Summary: The study demonstrated the effective anaerobic degradation of PAHs using the anaerobic co-culture DYM1 obtained from petroleum-polluted soil without the need for additional terminal electron acceptors. This provides a novel approach for recovering energy from toxic pollutants in the form of methane.
ENVIRONMENTAL POLLUTION
(2022)
Article
Environmental Sciences
Zhihui Qian, Tao Peng, Tongwang Huang, Zhong Hu
Summary: In this study, a strain of Pontibacillus sp. HN14 with the ability to degrade BaP was isolated from mangrove sediments in Hainan Province. It was found that CYP102(HN14) played a crucial role in the degradation of BaP. This study is the first to demonstrate the BaP oxidization ability of CYP102(HN14) in bacteria, providing a new approach for BaP bioremediation under high salinity conditions.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Environmental Sciences
T. Sohrabi, M. Shakiba, F. Mirzaei, A. A. Pourbabaee
Summary: This study investigates the ability of Bacillus sp. strain PS to degrade BTEX under saline and hypoxic conditions. The results show that the initial concentration of BTEX and nitrate are the most influential factors in BTEX biodegradation.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2022)
Article
Environmental Sciences
Gadissa Tokuma Gindaba, Hundessa Dessalegn Demsash, Mani Jayakumar
Summary: In this study, a novel surface-modified, wheat straw-supported magnetite nanoparticles were synthesized through a green synthesis method. The adsorption of mercury ions from aqueous solutions was investigated, and the optimum adsorption conditions and removal efficiency were determined. The results showed that the synthesized nano-adsorbent had excellent adsorption capability and potential application for Hg(II) removal from aqueous environments.
ENVIRONMENTAL MONITORING AND ASSESSMENT
(2023)
Review
Environmental Sciences
Sundaram Thanigaivel, Sundaram Vickram, Nibedita Dey, Palanivelu Jeyanthi, Ramasamy Subbaiya, Woong Kim, Muthusamy Govarthanan, Natchimuthu Karmegam
Summary: Anthropogenic toxins are discharged into the environment and distributed through various environmental matrices. Trace contaminant detection and analysis has advanced, and it is apparent that a wide range of pollutants can accumulate in the tissues of aquatic organisms, despite limited research on invertebrate exposure and accumulation.
Review
Environmental Sciences
Sonam Tripathi, Diane Purchase, Muthusamy Govarthanan, Ram Chandra, Sangeeta Yadav
Summary: Quorum sensing is a bacterial system that allows cells to communicate with each other, and it is linked to cell density in the microbiome. Understanding the role of quorum sensing and developing novel approaches to control it is essential in preventing microbial pathogenesis. This review provides the latest knowledge on the relationship between quorum sensing and pathogenicity and explores the potential of quorum quenching as a control mechanism.
ENVIRONMENTAL MONITORING AND ASSESSMENT
(2023)
Article
Environmental Sciences
Nagaraja Geetha, Channarayapatna Ramesh Sunilkumar, Gurulingaiah Bhavya, Boregowda Nandini, Padukana Abhijith, Praveen Satapute, Hunthrike Shekar Shetty, Muthusamy Govarthanan, Sudisha Jogaiah
Summary: The fungal symbiosis with plant root system is recognized as a way to enhance plant growth and defense against various stress conditions. The excessive use of chemical fertilizers has led to soil contamination. Using microbial consortium such as plant growth promoting fungi (PGPFs) is gaining importance worldwide. PGPFs exhibit multiple activities through promoting plant growth, inducing resistance, combating diseases, and detoxifying toxic chemicals. The key to these properties is the secretion of biomolecules by the fungi. This review focuses on the role of PGPFs in inducing systemic resistance and detoxifying heavy metals. Understanding the mechanism of PGPFs can contribute to developing sustainable agriculture by alleviating heavy metal stress in plants and soil.
ENVIRONMENTAL RESEARCH
(2023)
Review
Environmental Sciences
S. Chozhavendhan, G. Karthigadevi, B. Bharathiraja, R. Praveen Kumar, Lata Deso Abo, S. Venkatesa Prabhu, Ramalingam Balachandar, Mani Jayakumar
Summary: This review critically analyzes the biorefinery approaches on anaerobic digestion (AD) process for the production of biogas and digestate, and their direct and indirect utilization. Upgrading or transforming digestate into high valued products can enrich soil nutrients and ensure a safe environment.
ENVIRONMENTAL RESEARCH
(2023)
Article
Energy & Fuels
Fekadu Ashine, Zebene Kiflie, Sundramurthy Venkatesa Prabhu, Belachew Zegale Tizazu, Venkatramanan Varadharajan, Manivasagan Rajasimman, Sang-Woo Joo, Yasser Vasseghian, Mani Jayakumar
Summary: The present study optimized the process of biodiesel production from Argemone mexicana oil using calcium oxide as a catalyst derived from chicken eggshells. The catalyst was characterized and the parameters were optimized through response surface methodology, resulting in a high yield of biodiesel. Non-statistical techniques were used to analyze the optimal values, and the obtained biodiesel was characterized using spectroscopic techniques.
Review
Energy & Fuels
Nibedita Dey, Sundaram Vickram, S. Thanigaivel, S. Manikandan, R. Subbaiya, Natchimuthu Karmegam, Woong Kim, Muthusamy Govarthanan
Summary: Traditional fossil fuels have numerous harmful effects on humans and the environment. Fuel derived from microalgae is a healthier and more eco-friendly alternative due to its lower sulfur content. Nanoparticles can be used in conjunction with microalgae to improve fuel quality by affecting algal biomass and lipid composition. The cultivation mode, harvesting technique, and extraction procedure used will determine the quality and cost of the fuel. Nanoparticles can address nutritional deficiencies in growing microalgae and promote rapid nutrient absorption and lipid accumulation. Different nanoparticles have been found to have varying effects on microalgae growth and biomass quality. This review highlights the potential application of nanomaterials in enhancing microalgal growth and lipid accumulation, thereby improving the quality of the fuel produced by these strains.
Article
Agriculture, Dairy & Animal Science
Ashraf Khalifa, Hairul Islam Mohamed Ibrahim
Summary: In this study, beneficial probiotics, specifically Enterococcus faecium, were isolated from broiler chicken carcasses and found to improve chicken health against Salmonella infections. Chickens fed with E. faecium showed improved body weight, reduced mortality, and lower levels of S. enterica. The presence of E. faecium also led to increased levels of short-chain fatty acids and reduced levels of pro-inflammatory markers. These findings highlight the potential of E. faecium as a preventive measure against bacterial infections in broiler chickens.
JOURNAL OF ANIMAL SCIENCE
(2023)
Article
Nutrition & Dietetics
Hairul Islam Mohamed Ibrahim, Abdullah Sheikh, Hany Ezzat Khalil, Ashraf Khalifa
Summary: Bacillus amyloliquefaciens-supplemented camel milk (BASY) can significantly reduce the symptoms of multiple sclerosis (MS) and improve the associated inflammation. The study findings suggest that consuming BASY may serve as a preventive approach for managing MS symptoms.
Review
Environmental Sciences
Manish Kumar, Shashank Shekhar, Rakesh Kumar, Pawan Kumar, Muthusamy Govarthanan, Tushara Chaminda
Summary: This article summarizes the formation of various disinfection by-products (DBPs) during wastewater treatment and their treatment methods, discusses permissible limits and concentrations of DBPs in water systems globally, and their consequences on humans. It also critically reviews various remediation approaches and highlights the need for further advancements in detection and removal of hazardous DBPs before commercial-scale implementation.
ENVIRONMENTAL POLLUTION
(2023)
Article
Chemistry, Multidisciplinary
Narjes J. Alamer, Munirah F. Aldayel, Ashraf Khalifa
Summary: Plastic pollution is a serious environmental issue causing severe damage. This study aimed to isolate and characterize bacterial isolates from water samples in Saudi Arabia for biodegrading plastics. Two bacterial isolates (APCK5 and APCZ14) showed potential for degrading low-density polyethylene (LDPE) plastic, as evidenced by pH changes, weight loss, FTIR, and GC-MS analyses. Both isolates were closely related to the genus Brucella and could be developed as an eco-friendly method to remove plastic pollutants.
APPLIED SCIENCES-BASEL
(2023)
Article
Plant Sciences
Ashraf Khalifa, Noorah Alsowayeh
Summary: This study aimed to isolate and screen the plant-growth-enhancing features of AZC66, a strain isolated from the rhizosphere of Zygophyllum coccineum, and explore its whole-genome sequence. The results showed that AZC66 exhibited nitrogen fixation, IAA production, and inorganic phosphate solubilization, and significantly increased the root and shoot dry weights of cowpea. The genome sequencing revealed multiple genes involved in plant biostimulation activities. This study is of great importance for the development of robust and sustainable biological fertilizers in Saudi Arabia.
Review
Environmental Sciences
Narendhar Chandrasekar, Alexander Pinky Steffi, Balaji Ramachandran, Michael Taeyoung Hwang, Vahid Faramarzi, Muthusamy Govarthanan
Summary: In recent years, there has been a growing interest in MXenes, which are newly proliferating two-dimensional materials. The synthesis of MXenes for biosensing systems has attracted attention due to their advantages and applications. The accurate discrimination of nucleotide mismatches is crucial for diagnosing and treating diseases, and several detection methods, particularly Electrochemical-luminescence (ECL) ones, have been investigated for this purpose.
ENVIRONMENTAL RESEARCH
(2023)
Review
Green & Sustainable Science & Technology
Sivasubramanian Manikandan, Radhakrishnan Yedhu Krishnan, Sundaram Vickram, Ramasamy Subbaiya, Woong Kim, Muthusamy Govarthanan, Natchimuthu Karmegam
Summary: Biogas is becoming an attractive renewable energy option due to its low pollution and cost compared to traditional fuels. Nanoparticles are receiving increasing attention as a way to enhance the efficiency of biogas processes. This review examines the potential use of nanoparticles in improving biogas yields and discusses the impact of immobilized nanoparticles on biogas production.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2023)
Article
Microbiology
Ashraf Khalifa, Hairul-Islam Mohamed Ibrahim, Abdullah Sheikh
Summary: This study isolated potential probiotics from camel milk samples and tested them against Salmonella infection and host immune development. Three isolates (PM1, PM5, and PM6) showed significant antimicrobial activities and probiotic traits. PM5, identified as Bacillus subtilis, exhibited substantial effects in reducing Salmonella infection in a chicken model. Supplementation with probiotics can improve the growth performance of broilers and the quality of broiler chickens against enteric pathogens.
