Effect of MW and concentration of chitosan on antibacterial activity of Escherichia coli
Different molecular weight (MW) chitosans (5.5×10 4 to 15.5×10 4 Da) with the same degree of deacetylation (80%±0.29), were obtained by the method of acetic acid hydrolysis. The effect of antimicrobial activities of chitosan and acetic acid against Escherichia coli were investigated. All of the chit...
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| Veröffentlicht in: | Carbohydrate polymers 2006-04, Vol.64 (1), p.60-65 |
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| container_title | Carbohydrate polymers |
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| creator | Liu, Nan Chen, Xi-Guang Park, Hyun-Jin Liu, Chen-Guang Liu, Cheng-Sheng Meng, Xiang-Hong Yu, Le-Jun |
| description | Different molecular weight (MW) chitosans (5.5×10
4 to 15.5×10
4
Da) with the same degree of deacetylation (80%±0.29), were obtained by the method of acetic acid hydrolysis. The effect of antimicrobial activities of chitosan and acetic acid against
Escherichia coli were investigated. All of the chitosan samples with MW from 5.5×10
4 to 15.5×10
4
Da had antimicrobial activities at the concentrations higher than 200
ppm. The growth of
E. coli was promoted at concentration lower than 200
ppm. The antibacterial activity of chitosan had relationship to the MW at the concentration range from 50 to 100
ppm. The antibacterial activity of low MW chitosan is higher than that of the high MW samples. But the chitosan sample with the middle MW (9.0×10
4
Da) could promote the growth of bacteria. In the different stages of cultivation, the earlier chitosan was added the greater effect it did. And the mechanism of antibacterial activity was that
E. coli was flocculated. |
| doi_str_mv | 10.1016/j.carbpol.2005.10.028 |
| format | Article |
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4 to 15.5×10
4
Da) with the same degree of deacetylation (80%±0.29), were obtained by the method of acetic acid hydrolysis. The effect of antimicrobial activities of chitosan and acetic acid against
Escherichia coli were investigated. All of the chitosan samples with MW from 5.5×10
4 to 15.5×10
4
Da had antimicrobial activities at the concentrations higher than 200
ppm. The growth of
E. coli was promoted at concentration lower than 200
ppm. The antibacterial activity of chitosan had relationship to the MW at the concentration range from 50 to 100
ppm. The antibacterial activity of low MW chitosan is higher than that of the high MW samples. But the chitosan sample with the middle MW (9.0×10
4
Da) could promote the growth of bacteria. In the different stages of cultivation, the earlier chitosan was added the greater effect it did. And the mechanism of antibacterial activity was that
E. coli was flocculated.</description><identifier>ISSN: 0144-8617</identifier><identifier>EISSN: 1879-1344</identifier><identifier>DOI: 10.1016/j.carbpol.2005.10.028</identifier><identifier>CODEN: CAPOD8</identifier><language>eng</language><publisher>Oxford: Elsevier Ltd</publisher><subject>Antibacterial activity ; antimicrobial properties ; Applied sciences ; chemical concentration ; Chitosan ; Concentration ; Escherichia coli ; Exact sciences and technology ; Mechanism ; mechanism of action ; Molecular weight ; Natural polymers ; Physicochemistry of polymers ; Starch and polysaccharides ; Time sensitivity</subject><ispartof>Carbohydrate polymers, 2006-04, Vol.64 (1), p.60-65</ispartof><rights>2005 Elsevier Ltd</rights><rights>2006 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c460t-f9967caa4ac859a04a2b1b1c70039e891d89fb6a6e26ad06848695d53c394e1a3</citedby><cites>FETCH-LOGICAL-c460t-f9967caa4ac859a04a2b1b1c70039e891d89fb6a6e26ad06848695d53c394e1a3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0144861705005291$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=17721005$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Liu, Nan</creatorcontrib><creatorcontrib>Chen, Xi-Guang</creatorcontrib><creatorcontrib>Park, Hyun-Jin</creatorcontrib><creatorcontrib>Liu, Chen-Guang</creatorcontrib><creatorcontrib>Liu, Cheng-Sheng</creatorcontrib><creatorcontrib>Meng, Xiang-Hong</creatorcontrib><creatorcontrib>Yu, Le-Jun</creatorcontrib><title>Effect of MW and concentration of chitosan on antibacterial activity of Escherichia coli</title><title>Carbohydrate polymers</title><description>Different molecular weight (MW) chitosans (5.5×10
4 to 15.5×10
4
Da) with the same degree of deacetylation (80%±0.29), were obtained by the method of acetic acid hydrolysis. The effect of antimicrobial activities of chitosan and acetic acid against
Escherichia coli were investigated. All of the chitosan samples with MW from 5.5×10
4 to 15.5×10
4
Da had antimicrobial activities at the concentrations higher than 200
ppm. The growth of
E. coli was promoted at concentration lower than 200
ppm. The antibacterial activity of chitosan had relationship to the MW at the concentration range from 50 to 100
ppm. The antibacterial activity of low MW chitosan is higher than that of the high MW samples. But the chitosan sample with the middle MW (9.0×10
4
Da) could promote the growth of bacteria. In the different stages of cultivation, the earlier chitosan was added the greater effect it did. And the mechanism of antibacterial activity was that
E. coli was flocculated.</description><subject>Antibacterial activity</subject><subject>antimicrobial properties</subject><subject>Applied sciences</subject><subject>chemical concentration</subject><subject>Chitosan</subject><subject>Concentration</subject><subject>Escherichia coli</subject><subject>Exact sciences and technology</subject><subject>Mechanism</subject><subject>mechanism of action</subject><subject>Molecular weight</subject><subject>Natural polymers</subject><subject>Physicochemistry of polymers</subject><subject>Starch and polysaccharides</subject><subject>Time sensitivity</subject><issn>0144-8617</issn><issn>1879-1344</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2006</creationdate><recordtype>article</recordtype><recordid>eNqFkcFu1DAQhi0EEkvhESpygVuWmcRx4hNC1RaQWvUAFb1ZE8emXqXxYruV-vZMtCtxxBePfn0zY30W4hxhi4Dq035rKY2HOG8bgI6zLTTDC7HBodc1tlK-FBtAKetBYf9avMl5D3wUwkbc7bx3tlTRV9e_KlqmysbFuqUkKiEua27vQ4mZuF4YKGEkW1wKNFdchKdQnldql-09pwwTj5jDW_HK05zdu9N9Jm4vdz8vvtVXN1-_X3y5qq1UUGqvteotkSQ7dJpAUjPiiLYHaLUbNE6D9qMi5RpFE6hBDkp3U9faVkuH1J6Jj8e5hxT_PLpczEPI1s0zLS4-ZtNA02OLHYPdEbQp5pycN4cUHig9GwSzejR7c_JoVo9rzB6578NpAWVLs0-02JD_Nfd9g4wz9_7IeYqGfidmbn80gC0gaNkrYOLzkXDs4ym4ZLINjm1PIfEfmCmG_7zlL7h_lIc</recordid><startdate>20060401</startdate><enddate>20060401</enddate><creator>Liu, Nan</creator><creator>Chen, Xi-Guang</creator><creator>Park, Hyun-Jin</creator><creator>Liu, Chen-Guang</creator><creator>Liu, Cheng-Sheng</creator><creator>Meng, Xiang-Hong</creator><creator>Yu, Le-Jun</creator><general>Elsevier Ltd</general><general>Elsevier Science</general><scope>FBQ</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QL</scope><scope>7QO</scope><scope>7T7</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>P64</scope></search><sort><creationdate>20060401</creationdate><title>Effect of MW and concentration of chitosan on antibacterial activity of Escherichia coli</title><author>Liu, Nan ; Chen, Xi-Guang ; Park, Hyun-Jin ; Liu, Chen-Guang ; Liu, Cheng-Sheng ; Meng, Xiang-Hong ; Yu, Le-Jun</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c460t-f9967caa4ac859a04a2b1b1c70039e891d89fb6a6e26ad06848695d53c394e1a3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2006</creationdate><topic>Antibacterial activity</topic><topic>antimicrobial properties</topic><topic>Applied sciences</topic><topic>chemical concentration</topic><topic>Chitosan</topic><topic>Concentration</topic><topic>Escherichia coli</topic><topic>Exact sciences and technology</topic><topic>Mechanism</topic><topic>mechanism of action</topic><topic>Molecular weight</topic><topic>Natural polymers</topic><topic>Physicochemistry of polymers</topic><topic>Starch and polysaccharides</topic><topic>Time sensitivity</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Liu, Nan</creatorcontrib><creatorcontrib>Chen, Xi-Guang</creatorcontrib><creatorcontrib>Park, Hyun-Jin</creatorcontrib><creatorcontrib>Liu, Chen-Guang</creatorcontrib><creatorcontrib>Liu, Cheng-Sheng</creatorcontrib><creatorcontrib>Meng, Xiang-Hong</creatorcontrib><creatorcontrib>Yu, Le-Jun</creatorcontrib><collection>AGRIS</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Bacteriology Abstracts (Microbiology B)</collection><collection>Biotechnology Research Abstracts</collection><collection>Industrial and Applied Microbiology Abstracts (Microbiology A)</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>Biotechnology and BioEngineering Abstracts</collection><jtitle>Carbohydrate polymers</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Liu, Nan</au><au>Chen, Xi-Guang</au><au>Park, Hyun-Jin</au><au>Liu, Chen-Guang</au><au>Liu, Cheng-Sheng</au><au>Meng, Xiang-Hong</au><au>Yu, Le-Jun</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effect of MW and concentration of chitosan on antibacterial activity of Escherichia coli</atitle><jtitle>Carbohydrate polymers</jtitle><date>2006-04-01</date><risdate>2006</risdate><volume>64</volume><issue>1</issue><spage>60</spage><epage>65</epage><pages>60-65</pages><issn>0144-8617</issn><eissn>1879-1344</eissn><coden>CAPOD8</coden><abstract>Different molecular weight (MW) chitosans (5.5×10
4 to 15.5×10
4
Da) with the same degree of deacetylation (80%±0.29), were obtained by the method of acetic acid hydrolysis. The effect of antimicrobial activities of chitosan and acetic acid against
Escherichia coli were investigated. All of the chitosan samples with MW from 5.5×10
4 to 15.5×10
4
Da had antimicrobial activities at the concentrations higher than 200
ppm. The growth of
E. coli was promoted at concentration lower than 200
ppm. The antibacterial activity of chitosan had relationship to the MW at the concentration range from 50 to 100
ppm. The antibacterial activity of low MW chitosan is higher than that of the high MW samples. But the chitosan sample with the middle MW (9.0×10
4
Da) could promote the growth of bacteria. In the different stages of cultivation, the earlier chitosan was added the greater effect it did. And the mechanism of antibacterial activity was that
E. coli was flocculated.</abstract><cop>Oxford</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.carbpol.2005.10.028</doi><tpages>6</tpages></addata></record> |
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| issn | 0144-8617 1879-1344 |
| language | eng |
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| source | Elsevier ScienceDirect Journals |
| subjects | Antibacterial activity antimicrobial properties Applied sciences chemical concentration Chitosan Concentration Escherichia coli Exact sciences and technology Mechanism mechanism of action Molecular weight Natural polymers Physicochemistry of polymers Starch and polysaccharides Time sensitivity |
| title | Effect of MW and concentration of chitosan on antibacterial activity of Escherichia coli |
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