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Zhao A, Li Y, Wu L, Wang Z, Lv Y, Xiong W, Alam MA, Liu G, Xu J. Immobilization of rough morphotype Mycolicibacterium neoaurum R for androstadienedione production. Biotechnol Lett 2024; 46:55-68. [PMID: 38064040 DOI: 10.1007/s10529-023-03448-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Revised: 09/20/2023] [Accepted: 11/04/2023] [Indexed: 01/14/2024]
Abstract
OBJECTIVES Enhance the androstadienedione (Androst-1,4-diene-3,17-dione, ADD) production of rough morphotype Mycolicibacterium neoaurum R by repeated-batch fermentation of immobilized cells. RESULTS M. neoaurum R was a rough colony morphotype variant, obtained from the routine plating of smooth M. neoaurum strain CICC 21097. M. neoaurum R showed rougher cell surface and aggregated in broth. The ADD production of M. neoaurum R was notably lower than that of M. neoaurum CICC 21097 during the free cell fermentation, but the yield gap could be erased after proper cell immobilization. Subsequently, repeated-batch fermentation of immobilized M. neoaurum R was performed to shorten the production cycle and enhance the bio-production efficiency of ADD. Through the optimization of the immobilization carriers and the co-solvents for phytosterols, the ADD productivity of M. neoaurum R immobilized by semi-expanded perlite reached 0.075 g/L/h during the repeated-batch fermentation for 40 days. CONCLUSIONS The ADD production of the rough-type M. neoaurum R was notably enhanced by the immobilization onto semi-expanded perlite. Moreover, the ADD batch yields of M. neoaurum R immobilized by semi-expanded perlite were maintained at high levels during the repeated-batch fermentation.
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Affiliation(s)
- Anqi Zhao
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001, Henan, China
| | - Yamei Li
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001, Henan, China
| | - Lixia Wu
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001, Henan, China
| | - Zhi Wang
- School of Chemical Engineering, Zhengzhou University, Zhengzhou, 450001, Henan, China
| | - Yongkun Lv
- School of Chemical Engineering, Zhengzhou University, Zhengzhou, 450001, Henan, China
| | - Wenlong Xiong
- School of Chemical Engineering, Zhengzhou University, Zhengzhou, 450001, Henan, China
| | - Mohammad Asraful Alam
- School of Chemical Engineering, Zhengzhou University, Zhengzhou, 450001, Henan, China
| | - Guohua Liu
- Key Laboratory of Feed Biotechnology, The Ministry of Agriculture and Rural Affairs of the People's Republic of China, Beijing, 100081, China
| | - Jingliang Xu
- School of Chemical Engineering, Zhengzhou University, Zhengzhou, 450001, Henan, China.
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Xue J, Wu Y, Shi K, Xiao X, Gao Y, Li L, Qiao Y. Study on the degradation performance and kinetics of immobilized cells in straw-alginate beads in marine environment. BIORESOURCE TECHNOLOGY 2019; 280:88-94. [PMID: 30763865 DOI: 10.1016/j.biortech.2019.02.019] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2018] [Revised: 02/01/2019] [Accepted: 02/02/2019] [Indexed: 05/23/2023]
Abstract
In this study, two strains Halomonas and Aneurinibacillus were mixed in equal proportions as free cells that could degrade diesel and produce biosurfactant. A new type of immobilized cells, free cells immobilized in beads combined with sodium alginate and straw, was studied. The components of straw-alginate beads were optimized by Response Surface Method, and the degradation performance of immobilized cells was determined. The result indicated that the density, strength and broken rate of straw-alginate beads were 1.04 g/cm3, 216 g and 4%, respectively. The best degradation rate of immobilized cells in straw-alginate beads could be 68.68%. Lately, by analyzing the Monod model, vmax (maximum specific degradation rate of diesel) and KS (half saturation rate constant) of immobilized cells in straw-alginate beads were 1.84 d-1 and 3.23 g/L, respectively, which explained the higher degradation performance.
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Affiliation(s)
- Jianliang Xue
- College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China.
| | - Yanan Wu
- College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China
| | - Ke Shi
- College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China
| | - Xinfeng Xiao
- College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China
| | - Yu Gao
- College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China
| | - Lin Li
- College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China
| | - Yanlu Qiao
- College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China
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Foroughi M, Sarabi Jamab M, Keramat J, Najaf Najafi M. The use ofSaccharomyces cerevisiaeimmobilized on activated alumina, and alumina silicate beads for the reduction of Aflatoxin M1in vitro. J FOOD PROCESS PRES 2019. [DOI: 10.1111/jfpp.13876] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Marjan Foroughi
- Department of Food Biotechnology; Research Institute of Food Science and Technology; Mashhad Iran
| | - Mahboobe Sarabi Jamab
- Department of Food Biotechnology; Research Institute of Food Science and Technology; Mashhad Iran
| | - Javad Keramat
- Department of Food Science and Technology; College of Agricultural; Isfahan Iran
| | - Masoud Najaf Najafi
- Khorasan Razavi Agricultural and Natural Resources Research and Education Center, AREEO; Mashhad Iran
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Mathew RT, Cooney RP, Zujovic Z, Doyle C, Wheelwright W, de Silva K. A Sustained Release Anchored Biocide System Utilizing the Honeycomb Cellular Structure of Expanded Perlite. ACS APPLIED BIO MATERIALS 2018; 1:1959-1971. [DOI: 10.1021/acsabm.8b00495] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Foroughi M, Sarabi Jamab M, Keramat J, Foroughi M. Immobilization of Saccharomyces cerevisiae on Perlite Beads for the Decontamination of Aflatoxin M1 in Milk. J Food Sci 2018; 83:2008-2013. [PMID: 29802731 DOI: 10.1111/1750-3841.14100] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Revised: 01/20/2018] [Accepted: 02/07/2018] [Indexed: 11/29/2022]
Abstract
Aflatoxin M1 (AFM1) contamination presents one of the most serious concerns in milk safety. In this study, the immobilization of Saccharomyces cerevisiae was used to detoxify AFM1-contaminated milk. The yeasts were immobilized on perlite for 24 and 48 hr, and the best immobilization time was achieved at 48 hr. Microscopic examination confirmed successful immobilization. The milk samples with 0.08, 0.13, 0.18, and 0.23 ppb AFM1 contamination were passed through the biofilter for 20, 40, and 80 min. The results showed a significant reduction in AFM1 concentration for all the milk samples with various initial AFM1 contents. The contaminated milk with 0.08 ppb AFM1 was completely cleared after 40 min of circulation while for the milk solution with 0.23 ppb, the highest AFM1 reduction was obtained at about 81.3% after 80 min circulation. In addition, the biofilter was saturated after the third step of milk circulation, containing 0.23 ppb AF, in which each step duration was 20 min. This study showed the excellent capability of the immobilized cells on the perlite beads to detoxify the AFM1-contaminated milk without any side effects on its physicochemical properties. PRACTICAL APPLICATION The immobilization of Saccharomyces cerevisiae cells on perlite beads can be used to detoxify AFM1-contaminated milk. The perlite can provide a perfect support for immobilization. With respect to qualitative properties, 20 min, was suggested as the optimum time for milk decontamination. This study indicated that the detoxification of contaminated milk using immobilized S. cerevisiae cells on the perlite support did not affect the different properties of detoxified milk. This method can lead to a practical solution to address aflatoxin contamination in dairy products considered high-risk foods.
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Affiliation(s)
- Marjan Foroughi
- Dept. of Food Biotechnology, Research Inst. of Food Science and Technology, Mashhad, Iran
| | - Mahboobe Sarabi Jamab
- Dept. of Food Biotechnology, Research Inst. of Food Science and Technology, Mashhad, Iran
| | - Javad Keramat
- Dept. of Food Science and Technology, College of Agricultural, Isfahan, Iran
| | - Mahsa Foroughi
- Infectious Diseases Research Center, Kashan Univ. of Medical Sciences, Kashan, IR, Iran
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Ivankovic T, Hrenovic J, Matonickin-Kepcija R. Resistance of bioparticles formed of phosphate-accumulating bacteria and zeolite to harsh environmental conditions. BIOFOULING 2013; 29:641-649. [PMID: 23706006 DOI: 10.1080/08927014.2013.786048] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Extreme environmental conditions, such as pH fluctuations, high concentrations of toxicants or grazing of protozoa, can potentially be found in wastewater treatment systems. This study was carried out to provide specific evidence on how 'bioparticles' can resist these conditions. The term 'bioparticle' is used to describe a particle comprising natural zeolitized tuff with a developed biofilm of the phosphate-accumulating bacterial species, Acinetobacter junii, on the surface. The bacteria in the biofilm were protected from the negative influence of extremely low pH, high concentrations of benzalkonium-chloride and grazing by Paramecium caudatum and Euplotes affinis, even under conditions that caused complete eradication of planktonic bacteria. During an incubation of 24 h, the biofilms were maintained and bacteria detached from the bioparticles, thus bioaugmenting the wastewater. The bioparticles provided a safe environment for the survival of bacteria in harsh environmental conditions and could be used for successful bioaugmentation in wastewater treatment plants.
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Affiliation(s)
- Tomislav Ivankovic
- Faculty of Science, Division of Biology, Department of Microbiology, University of Zagreb, Zagreb, Croatia.
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Production of (R)-epichlorohydrin from 1,3-dichloro-2-propanol by two-step biocatalysis using haloalcohol dehalogenase and epoxide hydrolase in two-phase system. Biochem Eng J 2013. [DOI: 10.1016/j.bej.2013.02.005] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Synthesis and Characterization of Titania Nanoparticles on the Surface of Microporous Perlite Using Sol–Gel Method: Influence of Titania Precursor on Characteristics. J Inorg Organomet Polym Mater 2011. [DOI: 10.1007/s10904-011-9500-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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