Biodegradation of wool waste and keratinase production in scale-up fermenter with different strategies by Stenotrophomonas maltophilia BBE11-1

•Wool medium was first optimized for keratinase production.•Cell growth rate did a major impact on keratinase production.•A new strategy of glucose fed-batch process was developed.•High production of keratinase with wool medium was achieved in 30-L fermenter.•Stenotrophomonas maltophilia showed grea...

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Veröffentlicht in:Bioresource technology 2013-07, Vol.140, p.286-291
Hauptverfasser: Fang, Zhen, Zhang, Juan, Liu, Baihong, Du, Guocheng, Chen, Jian
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Zhang, Juan
Liu, Baihong
Du, Guocheng
Chen, Jian
description •Wool medium was first optimized for keratinase production.•Cell growth rate did a major impact on keratinase production.•A new strategy of glucose fed-batch process was developed.•High production of keratinase with wool medium was achieved in 30-L fermenter.•Stenotrophomonas maltophilia showed great potential for waste management. A keratin-degrading strain Stenotrophomonas maltophilia BBE11-1 was grown in a 3-L batch fermenter containing wool waste as the main medium and cell growth rate was determined as the key factor to affect keratinase yield. Three strategies of temperature-shift procedure, two-stage DO control and fed-batch process were used to change growth rate. And a 62.2% improvement of keratinase yield was achieved. With the glucose fed-batch procedure in 30-L fermenter, keratinase production was significantly improved up to 117.7% (1728U/ml) as compared with initial data (793.8U/ml) in a 3-L fermenter and with much shortened fermentation time within 18h. Significant structure changes and high levels of free amino acids from wool decomposition indicated the possible applications for wool waste management and fertilizer industry. The remarkable digestion of wool cuticle also suggested its potential utilization in textile industry.
doi_str_mv 10.1016/j.biortech.2013.04.091
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A keratin-degrading strain Stenotrophomonas maltophilia BBE11-1 was grown in a 3-L batch fermenter containing wool waste as the main medium and cell growth rate was determined as the key factor to affect keratinase yield. Three strategies of temperature-shift procedure, two-stage DO control and fed-batch process were used to change growth rate. And a 62.2% improvement of keratinase yield was achieved. With the glucose fed-batch procedure in 30-L fermenter, keratinase production was significantly improved up to 117.7% (1728U/ml) as compared with initial data (793.8U/ml) in a 3-L fermenter and with much shortened fermentation time within 18h. Significant structure changes and high levels of free amino acids from wool decomposition indicated the possible applications for wool waste management and fertilizer industry. The remarkable digestion of wool cuticle also suggested its potential utilization in textile industry.</description><identifier>ISSN: 0960-8524</identifier><identifier>EISSN: 1873-2976</identifier><identifier>DOI: 10.1016/j.biortech.2013.04.091</identifier><identifier>PMID: 23708787</identifier><language>eng</language><publisher>Kidlington: Elsevier Ltd</publisher><subject>Amino acids ; Amino Acids - analysis ; Animals ; Applied sciences ; Batch Cell Culture Techniques ; Biodegradation ; Biodegradation, Environmental - drug effects ; Biological and medical sciences ; Bioreactors - microbiology ; Biotechnology ; Biotechnology - instrumentation ; Biotechnology - methods ; Cuticle ; Exact sciences and technology ; Fermentation ; Fermentation - drug effects ; Fermentation strategy ; Fundamental and applied biological sciences. Psychology ; Glucose ; Glucose - pharmacology ; Keratinase ; Methods. Procedures. Technologies ; Microbial engineering. Fermentation and microbial culture technology ; Nonlinear Dynamics ; Peptide Hydrolases - biosynthesis ; Pollution ; Stenotrophomonas maltophilia - drug effects ; Stenotrophomonas maltophilia - growth &amp; development ; Stenotrophomonas maltophilia - metabolism ; Strategy ; Textiles ; Time Factors ; Waste Products ; Wastes ; Wool ; Wool - chemistry ; Wool waste</subject><ispartof>Bioresource technology, 2013-07, Vol.140, p.286-291</ispartof><rights>2013 The Authors</rights><rights>2014 INIST-CNRS</rights><rights>Copyright © 2013 The Authors. Published by Elsevier Ltd.. 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A keratin-degrading strain Stenotrophomonas maltophilia BBE11-1 was grown in a 3-L batch fermenter containing wool waste as the main medium and cell growth rate was determined as the key factor to affect keratinase yield. Three strategies of temperature-shift procedure, two-stage DO control and fed-batch process were used to change growth rate. And a 62.2% improvement of keratinase yield was achieved. With the glucose fed-batch procedure in 30-L fermenter, keratinase production was significantly improved up to 117.7% (1728U/ml) as compared with initial data (793.8U/ml) in a 3-L fermenter and with much shortened fermentation time within 18h. Significant structure changes and high levels of free amino acids from wool decomposition indicated the possible applications for wool waste management and fertilizer industry. The remarkable digestion of wool cuticle also suggested its potential utilization in textile industry.</description><subject>Amino acids</subject><subject>Amino Acids - analysis</subject><subject>Animals</subject><subject>Applied sciences</subject><subject>Batch Cell Culture Techniques</subject><subject>Biodegradation</subject><subject>Biodegradation, Environmental - drug effects</subject><subject>Biological and medical sciences</subject><subject>Bioreactors - microbiology</subject><subject>Biotechnology</subject><subject>Biotechnology - instrumentation</subject><subject>Biotechnology - methods</subject><subject>Cuticle</subject><subject>Exact sciences and technology</subject><subject>Fermentation</subject><subject>Fermentation - drug effects</subject><subject>Fermentation strategy</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Glucose</subject><subject>Glucose - pharmacology</subject><subject>Keratinase</subject><subject>Methods. 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Fermentation and microbial culture technology</topic><topic>Nonlinear Dynamics</topic><topic>Peptide Hydrolases - biosynthesis</topic><topic>Pollution</topic><topic>Stenotrophomonas maltophilia - drug effects</topic><topic>Stenotrophomonas maltophilia - growth &amp; development</topic><topic>Stenotrophomonas maltophilia - metabolism</topic><topic>Strategy</topic><topic>Textiles</topic><topic>Time Factors</topic><topic>Waste Products</topic><topic>Wastes</topic><topic>Wool</topic><topic>Wool - chemistry</topic><topic>Wool waste</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Fang, Zhen</creatorcontrib><creatorcontrib>Zhang, Juan</creatorcontrib><creatorcontrib>Liu, Baihong</creatorcontrib><creatorcontrib>Du, Guocheng</creatorcontrib><creatorcontrib>Chen, Jian</creatorcontrib><collection>ScienceDirect Open Access Titles</collection><collection>Elsevier:ScienceDirect:Open Access</collection><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>Environmental Engineering Abstracts</collection><collection>Mechanical &amp; Transportation Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>Civil Engineering Abstracts</collection><jtitle>Bioresource technology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Fang, Zhen</au><au>Zhang, Juan</au><au>Liu, Baihong</au><au>Du, Guocheng</au><au>Chen, Jian</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Biodegradation of wool waste and keratinase production in scale-up fermenter with different strategies by Stenotrophomonas maltophilia BBE11-1</atitle><jtitle>Bioresource technology</jtitle><addtitle>Bioresour Technol</addtitle><date>2013-07-01</date><risdate>2013</risdate><volume>140</volume><spage>286</spage><epage>291</epage><pages>286-291</pages><issn>0960-8524</issn><eissn>1873-2976</eissn><abstract>•Wool medium was first optimized for keratinase production.•Cell growth rate did a major impact on keratinase production.•A new strategy of glucose fed-batch process was developed.•High production of keratinase with wool medium was achieved in 30-L fermenter.•Stenotrophomonas maltophilia showed great potential for waste management. A keratin-degrading strain Stenotrophomonas maltophilia BBE11-1 was grown in a 3-L batch fermenter containing wool waste as the main medium and cell growth rate was determined as the key factor to affect keratinase yield. Three strategies of temperature-shift procedure, two-stage DO control and fed-batch process were used to change growth rate. And a 62.2% improvement of keratinase yield was achieved. With the glucose fed-batch procedure in 30-L fermenter, keratinase production was significantly improved up to 117.7% (1728U/ml) as compared with initial data (793.8U/ml) in a 3-L fermenter and with much shortened fermentation time within 18h. Significant structure changes and high levels of free amino acids from wool decomposition indicated the possible applications for wool waste management and fertilizer industry. The remarkable digestion of wool cuticle also suggested its potential utilization in textile industry.</abstract><cop>Kidlington</cop><pub>Elsevier Ltd</pub><pmid>23708787</pmid><doi>10.1016/j.biortech.2013.04.091</doi><tpages>6</tpages><oa>free_for_read</oa></addata></record>
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subjects Amino acids
Amino Acids - analysis
Animals
Applied sciences
Batch Cell Culture Techniques
Biodegradation
Biodegradation, Environmental - drug effects
Biological and medical sciences
Bioreactors - microbiology
Biotechnology
Biotechnology - instrumentation
Biotechnology - methods
Cuticle
Exact sciences and technology
Fermentation
Fermentation - drug effects
Fermentation strategy
Fundamental and applied biological sciences. Psychology
Glucose
Glucose - pharmacology
Keratinase
Methods. Procedures. Technologies
Microbial engineering. Fermentation and microbial culture technology
Nonlinear Dynamics
Peptide Hydrolases - biosynthesis
Pollution
Stenotrophomonas maltophilia - drug effects
Stenotrophomonas maltophilia - growth & development
Stenotrophomonas maltophilia - metabolism
Strategy
Textiles
Time Factors
Waste Products
Wastes
Wool
Wool - chemistry
Wool waste
title Biodegradation of wool waste and keratinase production in scale-up fermenter with different strategies by Stenotrophomonas maltophilia BBE11-1
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