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Wang Z, Cui T, Wang Q. Optimization of degradation conditions and analysis of degradation mechanism for nitrite by Bacillus aryabhattai 47. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 921:171096. [PMID: 38387569 DOI: 10.1016/j.scitotenv.2024.171096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 02/17/2024] [Accepted: 02/17/2024] [Indexed: 02/24/2024]
Abstract
Excessive nitrite levels cause significant damage to aquaculture, making it crucial to explore green and reliable nitrite removal technologies. In this study, A Bacillus aryabhattai (designated as the strain 47) isolated from aquaculture wastewater was used as the experimental strain. The nitrite degradation conditions of the strain 47 were optimized, and the optimal conditions are: glucose was 12.74 g/L, fermented special soybean meal was 21.27 g/L, MgCl2 369 mg/L, pH 7.0, incubated at 30 °C with the inoculum size of 2 % and the rotation speed of 170 rpm. Under the optimal conditions, the nitrite concentration of the culture solution was 200 mg/L, and the nitrite removal rate reached 91.4 %. Meanwhile, the mechanism by which Mg2+ enhanced the nitrite degradation ability of the strain 47 was investigated by transcriptomics. An operon structure directed cellular trafficking of Mg2+, and then, the Mg2+-mediated catalytic reaction of multiple enzymes enhanced and improved cellular metabolic processes (e.g. the transport and metabolism of nitrite, central carbohydrate metabolism oxidative phosphorylation). At the same time, with the progress of cell metabolism, cells secreted a series of enzymes related to nitrite transport and metabolism to promote the metabolism of nitrite. And the process of the assimilated nitrate reduction pathway of nitrite degradation in the strain 47 was elaborated at the transcriptome level. This study provided a new insight into nitrite treatment mediated by microbial organisms.
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Affiliation(s)
- Zhenhao Wang
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou 510006, PR China
| | - Tangbing Cui
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou 510006, PR China.
| | - Qiang Wang
- Guangdong Yuzanchen Biotechnology Co., Ltd, Jiangmen 529100, PR China
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Duong-Nguyen TA, Pham MH, Lam NH, Pham CQ, Le TD, Tran BM, Van Tra T. Amoxicillin degradation ability of Bacillus cereus C1 isolated from catfish pond sludge in Vietnam. Heliyon 2022; 8:e11688. [PMID: 36444268 PMCID: PMC9699968 DOI: 10.1016/j.heliyon.2022.e11688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Revised: 08/20/2022] [Accepted: 11/11/2022] [Indexed: 11/20/2022] Open
Abstract
The biological removal of antibiotic residue in the environment has earned great interest. This study presented the biodegradation of amoxicillin (AMX) using B. cereus C1 isolated from the catfish pond sludge in Vietnam. This AMX-degrading bacterial strain grew well in the range of temperatures between 25ΟC and 40ΟC under aerobic condition. In a culture medium containing nitrogen source of NH4Cl (1 g.L-1) alone, the bacterium showed a AMX degradation ability of 54%. The AMX degradation ability of this bacterial strain was the highest level of 94% in the culture medium with 1.5 g.L-1 of NH4Cl and 3 g.L-1 of glucose. B. cereus C1 exhibited a great antibiotic degradation capability on high AMX concentration of 250 μg.mL-1 of AMX with AMX removal efficiency of 84% in 16 h of cultivation.
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Affiliation(s)
- Tam-Anh Duong-Nguyen
- Faculty of Biology and Biotechnology, University of Science, Vietnam National University Ho Chi Minh City (VNU-HCMC), 227 Nguyen Van Cu, Dist. 5, Ho Chi Minh City, Viet Nam
| | - Minh Hoang Pham
- Faculty of Biology and Biotechnology, University of Science, Vietnam National University Ho Chi Minh City (VNU-HCMC), 227 Nguyen Van Cu, Dist. 5, Ho Chi Minh City, Viet Nam
| | - Nghi Hue Lam
- Faculty of Biology and Biotechnology, University of Science, Vietnam National University Ho Chi Minh City (VNU-HCMC), 227 Nguyen Van Cu, Dist. 5, Ho Chi Minh City, Viet Nam
| | - Cuong Quoc Pham
- Faculty of Biology and Biotechnology, University of Science, Vietnam National University Ho Chi Minh City (VNU-HCMC), 227 Nguyen Van Cu, Dist. 5, Ho Chi Minh City, Viet Nam
| | - Trung Duc Le
- Institute for Environment and Resources – IER, Vietnam National University Ho Chi Minh City (VNU-HCMC), 142 To Hien Thanh, Dist. 10, Ho Chi Minh City, Viet Nam
| | - Bao Minh Tran
- Institute for Environment and Resources – IER, Vietnam National University Ho Chi Minh City (VNU-HCMC), 142 To Hien Thanh, Dist. 10, Ho Chi Minh City, Viet Nam
| | - Tung Van Tra
- Institute for Environment and Resources – IER, Vietnam National University Ho Chi Minh City (VNU-HCMC), 142 To Hien Thanh, Dist. 10, Ho Chi Minh City, Viet Nam
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Sa R, He S, Han D, Liu M, Yu Y, Shang R, Song M. Isolation and identification of a new biocontrol bacteria against Salvia miltiorrhiza root rot and optimization of culture conditions for antifungal substance production using response surface methodology. BMC Microbiol 2022; 22:231. [PMID: 36180825 PMCID: PMC9524000 DOI: 10.1186/s12866-022-02628-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Accepted: 08/25/2022] [Indexed: 11/10/2022] Open
Abstract
Background S. miltiorrhiza root rot is a soil-borne disease mainly caused by Fusarium solani and Fusarium oxysporum, which has spread rapidly in China in recent years. To reduce the amount of pesticides to control this plant fungal disease, biological control using endophytic bacteria is a promising method. Many endophytic bacteria show good biocontrol potential against various plant fungal diseases. The aims of this study were to isolate and identify endophytic bacteria with antifungal activity from Salvia miltiorrhiza plant tissue. In order to increase antifungal substances production, the culture conditions of the isolated DS-R5 strain were optimized through response surface methodology. Results Thirteen endophytic bacteria with antifungal activity against the target pathogenic fungus were successfully screened. The DS-R5 strain that had the strongest antifungal activity was identified based on morphological, physiological and biochemical characteristics, 16S rRNA and gyrB sequence analysis.The results of response surface methodology experiments showed that the optimal values of the three significant factors were as follows: medium volume, 51.0 ml; initial pH, 6.7; fermentation temperature, 33.1 °C. Under these optimal culture conditions, the titer of antifungal substances produced by the DS-R5 strain was 77.6% higher than that under the initial culture conditions. Conclusions The antifungal activity of endophytic bacteria from Salvia miltiorrhiza has been demonstrated for the first time, which may benefit future crop quality and production. In addition, response surface methodology can be well applied the optimization of culture conditions for antifungal substance, which lays the foundation for further research on strain DS-R5.
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Affiliation(s)
- Rongbo Sa
- Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, China
| | - Song He
- Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, China
| | - Dongdong Han
- Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, China
| | - Mengjiao Liu
- Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, China
| | - Yunxia Yu
- Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, China
| | - Rongen Shang
- Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, China
| | - Meimei Song
- Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, China.
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Dai Y, Wang YH, Li M, Zhu ML, Wen TY, Wu XQ. Medium optimization to analyze the protein composition of Bacillus pumilus HR10 antagonizing Sphaeropsis sapinea. AMB Express 2022; 12:61. [PMID: 35606553 PMCID: PMC9127024 DOI: 10.1186/s13568-022-01401-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2022] [Accepted: 05/08/2022] [Indexed: 11/10/2022] Open
Abstract
A previous study found that a biocontrol bacterium, Bacillus pumilus HR10, inhibited the Sphaeropsis shoot blight disease of pine, and the fermentation broth of HR10 strain contained protein antifungal substances. The optimal formulation of the fermentation medium for the antagonistic substance of B. pumilus HR10 was finally obtained by single-factor test, Packett-Burman test, steepest ascent test and Box-Behnken Design (BBD) response surface test, and the best formulation of the fermentation medium for the antagonistic substance of B. pumilus HR10 was 12 g/L corn meal, 15 g/L beef extract and 13 g/L magnesium sulfate, with a predicted bacterial inhibition rate of 89%. The fermentation filtrate of B. pumilus HR10 cultured with the optimized medium formulation was verified to have an inhibition rate of (87.04 ± 3.2) % on the growth of Sphaeropsis sapinea by three replicate tests. The antagonistic crude protein of B. pumilus HR10 were further isolated and identified using HiTrap Capto Q strong Ion-Exchange Chromatography and LC-MS-MS, and it was speculated that glycoside hydrolase (Ghy), beta-glucanase (Beta), arabinogalactan endonuclease β-1,4-galactanase (Arab), and immunosuppressant A (ImA) are proteins with antagonistic activity against S. sapinea in the B. pumilus HR10.
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Cela-Dablanca R, Barreiro A, López LR, Santás-Miguel V, Arias-Estévez M, Núñez-Delgado A, Álvarez-Rodríguez E, Fernández-Sanjurjo MJ. Relevance of sorption in bio-reduction of amoxicillin taking place in forest and crop soils. ENVIRONMENTAL RESEARCH 2022; 208:112753. [PMID: 35074354 DOI: 10.1016/j.envres.2022.112753] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 01/07/2022] [Accepted: 01/14/2022] [Indexed: 06/14/2023]
Abstract
The fate of antibiotics reaching soils is a matter of concern, given its potential repercussions on public health and the environment. In this work, the potential bio-reduction of the antibiotic amoxicillin (AMX), affected by sorption and desorption, is studied for 17 soils with clearly different characteristics. To carry out these studies, batch-type tests were performed, adding increasing concentrations of AMX (0, 2.5, 5, 10, 20, 30, 40, and 50 μmol L-1) to the soils. For the highest concentration added (50 μmol L-1), the adsorption values for forest soils ranged from 90.97 to 102.54 μmol kg-1 (74.21-82.41% of the amounts of antibiotic added), while the range was 69.96-94.87 μmol kg-1 (68.31-92.56%) for maize soils, and 52.72-85.40 μmol kg-1 (50.96-82.55%) for vineyard soils. When comparing the results for all soils, the highest adsorption corresponded to those more acidic and with high organic matter and non-crystalline minerals contents. The best adjustment to adsorption models corresponded to Freundlich's. AMX desorption was generally <10%; specifically, the maximum was 6.5% in forest soils, and 16.9% in agricultural soils. These results can be considered relevant since they cover agricultural and forest soils with a wide range of pH and organic matter contents, for an antibiotic that, reaching the environment as a contaminant, can pose a potential danger to human and environmental health.
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Affiliation(s)
- Raquel Cela-Dablanca
- Department of Soil Science and Agricultural Chemistry, Engineering Polytechnic School, Univ. Santiago de Compostela, 27002, Lugo, Spain
| | - Ana Barreiro
- Department of Soil Science and Agricultural Chemistry, Engineering Polytechnic School, Univ. Santiago de Compostela, 27002, Lugo, Spain
| | - Lucia Rodríguez López
- Soil Science and Agricultural Chemistry, Fac. Sciences, Univ. Vigo, 32004, Ourense, Spain
| | - Vanesa Santás-Miguel
- Soil Science and Agricultural Chemistry, Fac. Sciences, Univ. Vigo, 32004, Ourense, Spain
| | - Manuel Arias-Estévez
- Soil Science and Agricultural Chemistry, Fac. Sciences, Univ. Vigo, 32004, Ourense, Spain
| | - Avelino Núñez-Delgado
- Department of Soil Science and Agricultural Chemistry, Engineering Polytechnic School, Univ. Santiago de Compostela, 27002, Lugo, Spain.
| | - Esperanza Álvarez-Rodríguez
- Department of Soil Science and Agricultural Chemistry, Engineering Polytechnic School, Univ. Santiago de Compostela, 27002, Lugo, Spain
| | - María J Fernández-Sanjurjo
- Department of Soil Science and Agricultural Chemistry, Engineering Polytechnic School, Univ. Santiago de Compostela, 27002, Lugo, Spain
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Xiao X, Bai L, Wang S, Liu L, Qu X, Zhang J, Xiao Y, Tang B, Li Y, Yang H, Wang W. Chlorine Tolerance and Cross-Resistance to Antibiotics in Poultry-Associated Salmonella Isolates in China. Front Microbiol 2022; 12:833743. [PMID: 35185838 PMCID: PMC8854976 DOI: 10.3389/fmicb.2021.833743] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2021] [Accepted: 12/28/2021] [Indexed: 01/10/2023] Open
Abstract
Chlorine disinfectants have been widely used in the poultry supply chain but this exposure can also result in the development of bacterial tolerance to chlorine and this is often linked to antibiotic cross-resistance. The objectives of this study were to investigate sodium hypochlorite (NaClO) tolerance of Salmonella isolated from poultry supply chains and evaluate cross-resistance. We collected 172 Salmonella isolates from poultry farms, slaughter houses and retail markets in China during 2019–2020. We found that S. Enteritidis, S. Kentucky, and S. Typhimurium constituted > 80% of our Salmonella isolates. Overall, 68% of Salmonella isolates were resistant to > 3 antibiotics and S. Kentucky displayed a significantly (p > 0.05) higher frequency (93.2%) of multidrug resistance than the other serovars. Tolerance to chlorine at MIC > 256 mg/L was detected in 93.6% of isolates (161/172) and tolerant isolates displayed higher decimal reduction times (D value) and less ultrastructural damage than did the suspectable strains under chlorine stress. Spearman analysis indicated significant positive correlations between chlorine tolerance (evaluated by the OD method) and antibiotic resistance (p < 0.05) to ceftiofur, tetracycline, ciprofloxacin and florfenicol and this was most likely due to efflux pump over-expression. The most frequently detected chlorine resistance gene was qacEΔ1 (83.1%, n = 143) and we found a positive correlation between its presence and MIC levels (r = 0.66, p < 0.0001). Besides, we found weak correlations between chlorine-tolerance and antibiotic resistance genes. Our study indicated that chlorine disinfectants most likely played an important role in the emergence of chlorine tolerance and spread of antibiotic resistance and therefore does not completely control the risk of food-borne disease. The issue of disinfectant resistance should be examined in more detail at the level of the poultry production chain.
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Affiliation(s)
- Xingning Xiao
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Ministry of Agriculture (MOA) Laboratory of Quality and Safety Risk Assessment for Agro-Products (Hangzhou), Institute of Agro-Product Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Li Bai
- Key Laboratory of Food Safety Risk Assessment, National Health Commission of the People’s Republic of China, China National Center for Food Safety Risk Assessment, Beijing, China
| | - Sheng Wang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Ministry of Agriculture (MOA) Laboratory of Quality and Safety Risk Assessment for Agro-Products (Hangzhou), Institute of Agro-Product Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
- College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo, China
| | - Lisha Liu
- Key Laboratory of Food Safety Risk Assessment, National Health Commission of the People’s Republic of China, China National Center for Food Safety Risk Assessment, Beijing, China
| | - Xiaoyun Qu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Jianmin Zhang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Yingping Xiao
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Ministry of Agriculture (MOA) Laboratory of Quality and Safety Risk Assessment for Agro-Products (Hangzhou), Institute of Agro-Product Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Biao Tang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Ministry of Agriculture (MOA) Laboratory of Quality and Safety Risk Assessment for Agro-Products (Hangzhou), Institute of Agro-Product Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Yanbin Li
- Department of Biological and Agricultural Engineering, University of Arkansas, Fayetteville, AR, United States
| | - Hua Yang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Ministry of Agriculture (MOA) Laboratory of Quality and Safety Risk Assessment for Agro-Products (Hangzhou), Institute of Agro-Product Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
- *Correspondence: Hua Yang,
| | - Wen Wang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Ministry of Agriculture (MOA) Laboratory of Quality and Safety Risk Assessment for Agro-Products (Hangzhou), Institute of Agro-Product Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
- Wen Wang,
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ZHAO H, ZHENG Z, ZHANG M, WANG Y, ZHANG M, YANG Z. Fermentation optimization of rennet-producing Bacillus amyloliquefaciens GSBa-1 for high-density culture and its kinetic model. FOOD SCIENCE AND TECHNOLOGY 2022. [DOI: 10.1590/fst.40122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
Affiliation(s)
- Hua ZHAO
- Beijing Technology and Business University, P. R. China
| | - Zhe ZHENG
- Beijing Technology and Business University, P. R. China
| | - Man ZHANG
- Beijing Technology and Business University, P. R. China
| | - Yihui WANG
- Beijing Technology and Business University, P. R. China
| | - Min ZHANG
- Beijing Technology and Business University, P. R. China
| | - Zhennai YANG
- Beijing Technology and Business University, P. R. China
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Lee KH, Lee SK, Lee J, Kim S, Park C, Kim SW, Yoo HY. Improvement of Enzymatic Glucose Conversion from Chestnut Shells through Optimization of KOH Pretreatment. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:3772. [PMID: 33916606 PMCID: PMC8038493 DOI: 10.3390/ijerph18073772] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Revised: 04/01/2021] [Accepted: 04/02/2021] [Indexed: 12/31/2022]
Abstract
Worldwide, about one-third of food produced for human consumption is wasted, which includes byproducts from food processing, with a significant portion of the waste still being landfilled. The aim of this study is to convert chestnut shells (CNSs) from food processing into a valuable resource through bioprocesses. Currently, one of the highest barriers to bioprocess commercialization is low conversion of sugar from biomass, and KOH pretreatment was suggested to improve enzymatic digestibility (ED) of CNS. KOH concentration of 3% (w/w) was determined as a suitable pretreatment solution by a fundamental experiment. The reaction factors including temperature, time and solid/liquid (S/L) ratio were optimized (77.1 g/L CNS loading at 75 °C for 2.8 h) by response surface methodology (RSM). In the statistical model, temperature and time showed a relatively significant effect on the glucan content (GC) and ED, but S/L ratio was not. GC and ED of the untreated CNS were 45.1% and 12.7%, respectively. On the other hand, GC and ED of pretreated CNS were 83.2% and 48.4%, respectively, and which were significantly improved by about 1.8-fold and 3.8-fold compared to the control group. The improved ED through the optimization is expected to contribute to increasing the value of byproducts generated in food processing.
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Affiliation(s)
- Kang Hyun Lee
- Department of Biotechnology, Sangmyung University, 20, Hongjimun, 2-Gil, Jongno-Gu, Seoul 03016, Korea; (K.H.L.); (J.L.); (S.K.)
| | - Soo Kweon Lee
- Department of Chemical and Biological Engineering, Korea University, 145 Anam-Ro, Seongbuk-Gu, Seoul 02841, Korea;
| | - Jeongho Lee
- Department of Biotechnology, Sangmyung University, 20, Hongjimun, 2-Gil, Jongno-Gu, Seoul 03016, Korea; (K.H.L.); (J.L.); (S.K.)
| | - Seunghee Kim
- Department of Biotechnology, Sangmyung University, 20, Hongjimun, 2-Gil, Jongno-Gu, Seoul 03016, Korea; (K.H.L.); (J.L.); (S.K.)
| | - Chulhwan Park
- Department of Chemical Engineering, Kwangwoon University, 20 Kwangwoon-ro, Nowon-gu, Seoul 01897, Korea
| | - Seung Wook Kim
- Department of Chemical and Biological Engineering, Korea University, 145 Anam-Ro, Seongbuk-Gu, Seoul 02841, Korea;
| | - Hah Young Yoo
- Department of Biotechnology, Sangmyung University, 20, Hongjimun, 2-Gil, Jongno-Gu, Seoul 03016, Korea; (K.H.L.); (J.L.); (S.K.)
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El-Housseiny GS, Ibrahim AA, Yassien MA, Aboshanab KM. Production and statistical optimization of Paromomycin by Streptomyces rimosus NRRL 2455 in solid state fermentation. BMC Microbiol 2021; 21:34. [PMID: 33485318 PMCID: PMC7825151 DOI: 10.1186/s12866-021-02093-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Accepted: 01/17/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Paromomycin is a 2-deoxystreptamine aminocyclitol aminoglycoside antibiotic with broad spectrum activity against Gram-negative, Gram-positive bacteria and many protozoa. This study introduces a strategy for paromomycin production through solid-state fermentation using Streptomyces rimosus subsp. paromomycinus NRRL 2455. Solid state fermentation has gained enormous attention in the development of several products because of their numerous advantages over submerged liquid fermentation. After selecting the best solid substrate, a time course study of paromomycin production was carried out followed by optimization of environmental conditions using response surface methodology. Paromomycin yields obtained using this technique were also compared to those obtained using submerged liquid fermentation. RESULTS Upon screening of 6 different substrates, maximum paromomycin concentration (0.51 mg/g initial dry solids) was obtained with the cost-effective agro-industrial byproduct, corn bran, impregnated with aminoglycoside production media. Optimization of environmental conditions using D-optimal design yielded a 4.3-fold enhancement in paromomycin concentration reaching 2.21 mg/g initial dry solids at a pH of 8.5, inoculum size of 5% v/w and a temperature of 30 °C. CONCLUSION Compared to submerged liquid fermentation, solid state fermentation resulted in comparable paromomycin concentrations, cost reduction of raw materials, less energy consumption and waste water discharge, which have major implications in industrial fermentation. Therefore, solid state fermentation is a promising alternative to submerged liquid fermentation for paromomycin production. To the best of our knowledge, this is the first report on the optimized paromomycin production through solid state fermentation process.
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Affiliation(s)
- Ghadir S. El-Housseiny
- Department of Microbiology and Immunology, Faculty of Pharmacy, Ain Shams University, Organization of African Unity St, POB: 11566, Cairo, Abbassia Egypt
| | - Asmaa A. Ibrahim
- Department of Microbiology and Immunology, Faculty of Pharmacy, Ain Shams University, Organization of African Unity St, POB: 11566, Cairo, Abbassia Egypt
| | - Mahmoud A. Yassien
- Department of Microbiology and Immunology, Faculty of Pharmacy, Ain Shams University, Organization of African Unity St, POB: 11566, Cairo, Abbassia Egypt
| | - Khaled M. Aboshanab
- Department of Microbiology and Immunology, Faculty of Pharmacy, Ain Shams University, Organization of African Unity St, POB: 11566, Cairo, Abbassia Egypt
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Yang X, Guo P, Li M, Li H, Hu Z, Liu X, Zhang Q. Erratum: Yang, X. et al. Optimization of Culture Conditions for Amoxicillin Degrading Bacteria Screened from Pig Manure. Int. J. Environ. Res. Public Health 2020, 17, 1973. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18020677. [PMID: 33466964 PMCID: PMC7830373 DOI: 10.3390/ijerph18020677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Accepted: 01/13/2021] [Indexed: 12/01/2022]
Affiliation(s)
- Xuanjiang Yang
- Institute of Intelligent Machinery, Hefei Institute of Material Sciences, Chinese Academy of Sciences, Hefei 230031, China; (X.Y.); (P.G.); (H.L.); (Z.H.); (X.L.)
- Hefei Institutes of Physical Science, Chinese Academy of Sciences, University of Science and Technology of China, Hefei 230026, China
| | - Panpan Guo
- Institute of Intelligent Machinery, Hefei Institute of Material Sciences, Chinese Academy of Sciences, Hefei 230031, China; (X.Y.); (P.G.); (H.L.); (Z.H.); (X.L.)
| | - Miao Li
- Institute of Intelligent Machinery, Hefei Institute of Material Sciences, Chinese Academy of Sciences, Hefei 230031, China; (X.Y.); (P.G.); (H.L.); (Z.H.); (X.L.)
- Correspondence: ; Tel.: +86-189-6181-2279
| | - Hualong Li
- Institute of Intelligent Machinery, Hefei Institute of Material Sciences, Chinese Academy of Sciences, Hefei 230031, China; (X.Y.); (P.G.); (H.L.); (Z.H.); (X.L.)
| | - Zelin Hu
- Institute of Intelligent Machinery, Hefei Institute of Material Sciences, Chinese Academy of Sciences, Hefei 230031, China; (X.Y.); (P.G.); (H.L.); (Z.H.); (X.L.)
| | - Xianwang Liu
- Institute of Intelligent Machinery, Hefei Institute of Material Sciences, Chinese Academy of Sciences, Hefei 230031, China; (X.Y.); (P.G.); (H.L.); (Z.H.); (X.L.)
| | - Qiang Zhang
- Department of Biosystems Engineering, University of Manitoba, Winnipeg, MB R3T 5V6, Canada;
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Huang J, Zhuo Y, Lu J, Lai Q, Zhang Y. Bacillus cereus liquid fertilizer was produced from Agaricus bisporus industrial wastewater. J Biotechnol 2021; 327:74-85. [PMID: 33440221 DOI: 10.1016/j.jbiotec.2021.01.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Revised: 12/24/2020] [Accepted: 01/01/2021] [Indexed: 10/22/2022]
Abstract
During the Agaricus bisporus canning processes, a large number of water-soluble elements were dissolved into the processing hot water. This study was conducted to use the industrial wastewater of A. bisporus to prepare agricultural microbial fertilizer. In the work, the influence of 6 different liquid fermentation factors on the total biomass of living Bacillus cereus was evaluated with the one-factor-at-a-time method and the Plackett-Burman design. The total biomass of living B. cereus was most influenced by fermentation temperature, shaking speed, and inoculation volume, which were identified as the most critical independent variables for the B. cereus biomass. The approximate ranges of optimal fermentation conditions for the three key factors were identified by the path of steepest ascent. The center point of these factors were 24 ℃ of temperature, 250 rpm of shaking speed and 12 % inoculum amount, respectively. The Box-Behnken design was applied to derive a statistical model for optimizing the three fermentation factors for B. cereus biomass. After further optimizations based on statistical predictions, the optimum fermentation parameters for B. cereus cultured in the A. bisporus industrial wastewater were fermentation temperature of 24.8 °C, shaking speed of 234 rpm, inoculum dose of 12.2 % (v:v, %), industrial wastewater concentration of 4%, initial pH values of 6.5, loading liquid of 60 mL/250 mL, and culture time of 24 h. Culturing with the optimal fermentation conditions resulted in the biomass of B. cereus of 1.35 ± 0.02 × 109 Obj/mL (N = 3), which was consistent with the predicted values (1.32 × 109 Obj/mL) predicted by the corresponding regression models (p < 0.05), and more, was also far higher than that of the standard of agricultural bacterial fertilizers in People's Republic of China. Further, the results of field trial indicated that the of B. cereus liquid fertilizer can remarkably enhance the yield of Brassica chinensis L. It is practicable to make use of the industrial wastewater of A. bisporus to prepare the microbial fertilizer.
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Affiliation(s)
- Jiafu Huang
- Engineering Technological Center of Mushroom Industry, Minnan Normal University, Zhangzhou, Fujian, 363000, China; Collaborative Innovation Center of Mushroom Health Industry, Minnan Normal University, Zhangzhou, Fujian, 363000, China; School of Life Sciences & Biotechnology College, Minnan Normal University, Zhangzhou, Fujian, 363000, China.
| | - Yizhen Zhuo
- Zhangzhou No.3 Middle School, Zhangzhou, Fujian, 363000, China
| | - Jinqiu Lu
- School of Life Sciences & Biotechnology College, Minnan Normal University, Zhangzhou, Fujian, 363000, China
| | - Qingyu Lai
- School of Life Sciences & Biotechnology College, Minnan Normal University, Zhangzhou, Fujian, 363000, China
| | - Yawen Zhang
- School of Life Sciences & Biotechnology College, Minnan Normal University, Zhangzhou, Fujian, 363000, China
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Khan MUZ, Humza M, Yang S, Iqbal MZ, Xu X, Cai J. Evaluation and Optimization of Antibiotics Resistance Profile against Clostridium perfringens from Buffalo and Cattle in Pakistan. Antibiotics (Basel) 2021; 10:antibiotics10010059. [PMID: 33435636 PMCID: PMC7827476 DOI: 10.3390/antibiotics10010059] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2020] [Revised: 12/30/2020] [Accepted: 01/04/2021] [Indexed: 11/16/2022] Open
Abstract
Clostridium perfringens is a serious threat to successful bovine farming. It causes severe damage to the buffalo and cattle health causing a drastic reduction in milk and meat production. In Pakistan, C. perfringens is a constant threat, and for its management, antibiotics are mostly used. Most bovine farmers use a single antibiotic to suppress the bacterial infection which in turn, increases the antimicrobial resistance (AMR) against the particular antibiotic. To reduce the resistance, the administration of multiple antibiotics in their standard doses at different times can be a possible remedy to manage the AMR and reduce their viability. This study aims to evaluate the effect of 11 commonly used antibiotics at their standard concentrations for inhibiting 33 strains of C. perfringens from five districts of Punjab province in Pakistan. Based on the zone of inhibition, ciprofloxacin, ampicillin, and cefotaxime (CAC) at their standard concentrations effectively inhibited the bacterium. These antibiotics showed appropriate significance statistically, i.e., correlation, Chi-square test, and cluster analysis. Optimization of these antibiotics using response surface methodology (RSM) revealed that the selected antibiotics from medium to high range not only reduce the bacterial propagation but also their population up to a considerable extent. Hence, the health of milk- and meat-producing large animals could be improved, which will be cost-effective and less harmful to the animal, human health, and the environment. Moreover, optimized administration of the selected antibiotics would reduce the impact of drug-resistant superbugs.
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Affiliation(s)
- Muhammad Umar Zafar Khan
- State Key Laboratory of Veterinary Etiological Biology of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China; (M.U.Z.K.); (S.Y.); (X.X.)
- Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Disease and Zoonoses, Yangzhou University, Yangzhou 225009, China
| | - Muhammad Humza
- Key Laboratory of Agro-products Quality and Safety Control in Storage and Transport Process, Ministry of Agriculture and Rural Affairs/Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, China;
- Department of Plant Pathology, University of Agriculture, Faisalabad 38000, Pakistan
| | - Shunli Yang
- State Key Laboratory of Veterinary Etiological Biology of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China; (M.U.Z.K.); (S.Y.); (X.X.)
- Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Disease and Zoonoses, Yangzhou University, Yangzhou 225009, China
| | - Muhammad Zahid Iqbal
- Department of Veterinary Medicine, University of Veterinary and Animal Sciences, Outfall Road, Lahore 54000, Pakistan;
| | - Xiao Xu
- State Key Laboratory of Veterinary Etiological Biology of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China; (M.U.Z.K.); (S.Y.); (X.X.)
- Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Disease and Zoonoses, Yangzhou University, Yangzhou 225009, China
| | - Jianping Cai
- State Key Laboratory of Veterinary Etiological Biology of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China; (M.U.Z.K.); (S.Y.); (X.X.)
- Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Disease and Zoonoses, Yangzhou University, Yangzhou 225009, China
- Correspondence:
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Chan R, Chiemchaisri C, Chiemchaisri W. Effect of sludge recirculation on removal of antibiotics in two-stage membrane bioreactor (MBR) treating livestock wastewater. JOURNAL OF ENVIRONMENTAL HEALTH SCIENCE & ENGINEERING 2020; 18:1541-1553. [PMID: 33312660 PMCID: PMC7721752 DOI: 10.1007/s40201-020-00571-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Accepted: 10/15/2020] [Indexed: 06/12/2023]
Abstract
Two-stage MBR consisting of anaerobic and aerobic reactors was operated at total hydraulic retention time (HRT) of 48 h for the treatment of livestock wastewater containing antibiotics, i.e. amoxicillin (AMX), tiamulin (TIA), and chlortetracycline (CTC), under the (1st) absence and (2nd) presence of sludge recirculation between the reactors. During the operation with sludge recirculation, the removals of organic and nitrogen were enhanced. Meanwhile, the removals of TIA and CTC were found to decrease by 9% and 20% in the aerobic reactor but increased by 5% to 7% in the anaerobic reactor due to the relocation of biomass from the aerobic to the anaerobic reactor. A high degree of AMX biodegradation under both anaerobic and aerobic conditions and partial biodegradation of TIA and CTC under aerobic conditions were confirmed in batch experiments. Moreover, the effect of sludge recirculation on biomass and pollutant removal efficiencies in the 2-stage MBR was revealed using microbial community analyses. Membrane filtration also helped to retain the adsorbed antibiotics associated with small colloidal particles in the system.
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Affiliation(s)
- Rathborey Chan
- Department of Environmental Engineering, Faculty of Engineering, Kasetsart University, Bangkok, 10900 Thailand
| | - Chart Chiemchaisri
- Department of Environmental Engineering, Faculty of Engineering, Kasetsart University, Bangkok, 10900 Thailand
| | - Wilai Chiemchaisri
- Department of Environmental Engineering, Faculty of Engineering, Kasetsart University, Bangkok, 10900 Thailand
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