Biodegradation of crosslinked acrylic polymers by a white-rot fungus.
Identifieur interne : 000C24 ( Main/Exploration ); précédent : 000C23; suivant : 000C25Biodegradation of crosslinked acrylic polymers by a white-rot fungus.
Auteurs : G R Sutherland [États-Unis] ; J. Haselbach ; S D AustSource :
- Environmental science and pollution research international [ 0944-1344 ] ; 1997.
Abstract
Two synthetic superabsorbent crosslinked acrylic polymers were mineralized by the white-rot fungus Phanerochaete chrysosporium. The amount of polymer converted to CO(2) increased as the amount of polymer added to the cultures increased. In the presence of sufficiently large amounts of the superabsorbents, such that all of the culture fluid was absorbed and a gelatinous matrix was formed, the fungus still grew and mineralization was observed. Neither the polymers, nor their degradation products were toxic to the fungus. While the rates of mineralization were low, all of the polymers incubated in the liquid fungal cultures were completely depolymerized to water soluble products within 15-18 days. The depolymerization of the polymers was observed only in nitrogen limited cultures of the fungus which secrete the lignin degradation system, however, the water soluble products of depolymerization were mineralized in both nutrient limited and sufficient cultures of the fungus. The rate of mineralization of the depolymerized metabolites was more than two times greater in nutrient sufficient cultures. Following longer incubation periods, most (> 80 %) of the radioactivity was recovered in the fungal mycelial mat suggesting that carbon of the polymer had been converted to fungal metabolites.
DOI: 10.1007/BF02986258
PubMed: 19002412
Affiliations:
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Haselbach</name></author><author><name sortKey="Aust, S D" sort="Aust, S D" uniqKey="Aust S" first="S D" last="Aust">S D Aust</name></author></analytic><series><title level="j">Environmental science and pollution research international</title><idno type="ISSN">0944-1344</idno><imprint><date when="1997" type="published">1997</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Two synthetic superabsorbent crosslinked acrylic polymers were mineralized by the white-rot fungus Phanerochaete chrysosporium. The amount of polymer converted to CO(2) increased as the amount of polymer added to the cultures increased. In the presence of sufficiently large amounts of the superabsorbents, such that all of the culture fluid was absorbed and a gelatinous matrix was formed, the fungus still grew and mineralization was observed. Neither the polymers, nor their degradation products were toxic to the fungus. While the rates of mineralization were low, all of the polymers incubated in the liquid fungal cultures were completely depolymerized to water soluble products within 15-18 days. The depolymerization of the polymers was observed only in nitrogen limited cultures of the fungus which secrete the lignin degradation system, however, the water soluble products of depolymerization were mineralized in both nutrient limited and sufficient cultures of the fungus. The rate of mineralization of the depolymerized metabolites was more than two times greater in nutrient sufficient cultures. Following longer incubation periods, most (> 80 %) of the radioactivity was recovered in the fungal mycelial mat suggesting that carbon of the polymer had been converted to fungal metabolites.</div></front></TEI><pubmed><MedlineCitation Status="PubMed-not-MEDLINE" Owner="NLM"><PMID Version="1">19002412</PMID><DateCompleted><Year>2010</Year><Month>05</Month><Day>20</Day></DateCompleted><DateRevised><Year>2018</Year><Month>11</Month><Day>13</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">0944-1344</ISSN><JournalIssue CitedMedium="Print"><Volume>4</Volume><Issue>1</Issue><PubDate><Year>1997</Year></PubDate></JournalIssue><Title>Environmental science and pollution research international</Title><ISOAbbreviation>Environ Sci Pollut Res Int</ISOAbbreviation></Journal><ArticleTitle>Biodegradation of crosslinked acrylic polymers by a white-rot fungus.</ArticleTitle><Pagination><MedlinePgn>16-20</MedlinePgn></Pagination><Abstract><AbstractText>Two synthetic superabsorbent crosslinked acrylic polymers were mineralized by the white-rot fungus Phanerochaete chrysosporium. The amount of polymer converted to CO(2) increased as the amount of polymer added to the cultures increased. In the presence of sufficiently large amounts of the superabsorbents, such that all of the culture fluid was absorbed and a gelatinous matrix was formed, the fungus still grew and mineralization was observed. Neither the polymers, nor their degradation products were toxic to the fungus. While the rates of mineralization were low, all of the polymers incubated in the liquid fungal cultures were completely depolymerized to water soluble products within 15-18 days. The depolymerization of the polymers was observed only in nitrogen limited cultures of the fungus which secrete the lignin degradation system, however, the water soluble products of depolymerization were mineralized in both nutrient limited and sufficient cultures of the fungus. The rate of mineralization of the depolymerized metabolites was more than two times greater in nutrient sufficient cultures. Following longer incubation periods, most (> 80 %) of the radioactivity was recovered in the fungal mycelial mat suggesting that carbon of the polymer had been converted to fungal metabolites.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Sutherland</LastName><ForeName>G R</ForeName><Initials>GR</Initials><AffiliationInfo><Affiliation>Biotechnology Center, Utah State University, Logan, UT 84322-4705, USA.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Haselbach</LastName><ForeName>J</ForeName><Initials>J</Initials></Author><Author ValidYN="Y"><LastName>Aust</LastName><ForeName>S D</ForeName><Initials>SD</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList></Article><MedlineJournalInfo><Country>Germany</Country><MedlineTA>Environ Sci Pollut Res Int</MedlineTA><NlmUniqueID>9441769</NlmUniqueID><ISSNLinking>0944-1344</ISSNLinking></MedlineJournalInfo></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>1997</Year><Month>02</Month><Day>02</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>1997</Year><Month>03</Month><Day>25</Day></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>1997</Year><Month>1</Month><Day>1</Day><Hour>0</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>1997</Year><Month>1</Month><Day>1</Day><Hour>0</Hour><Minute>1</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>1997</Year><Month>1</Month><Day>1</Day><Hour>0</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">19002412</ArticleId><ArticleId IdType="doi">10.1007/BF02986258</ArticleId></ArticleIdList><ReferenceList><Reference><Citation>Science. 1985 Jun 21;228(4706):1434-6</Citation><ArticleIdList><ArticleId IdType="pubmed">3925550</ArticleId></ArticleIdList></Reference><Reference><Citation>Environ Sci Technol. 1995 Mar 1;29(3):719-25</Citation><ArticleIdList><ArticleId IdType="pubmed">22200281</ArticleId></ArticleIdList></Reference><Reference><Citation>Environ Sci Technol. 1994 Feb 1;28(2):78A-87A</Citation><ArticleIdList><ArticleId IdType="pubmed">22662714</ArticleId></ArticleIdList></Reference><Reference><Citation>Appl Environ Microbiol. 1988 Dec;54(12):2885-9</Citation><ArticleIdList><ArticleId IdType="pubmed">3223759</ArticleId></ArticleIdList></Reference><Reference><Citation>Annu Rev Microbiol. 1987;41:465-505</Citation><ArticleIdList><ArticleId IdType="pubmed">3318677</ArticleId></ArticleIdList></Reference><Reference><Citation>Appl Environ Microbiol. 1990 Jun;56(6):1666-71</Citation><ArticleIdList><ArticleId IdType="pubmed">2383008</ArticleId></ArticleIdList></Reference></ReferenceList></PubmedData></pubmed><affiliations><list><country><li>États-Unis</li></country><region><li>Utah</li></region></list><tree><noCountry><name sortKey="Aust, S D" sort="Aust, S D" uniqKey="Aust S" first="S D" last="Aust">S D Aust</name><name sortKey="Haselbach, J" sort="Haselbach, J" uniqKey="Haselbach J" first="J" last="Haselbach">J. Haselbach</name></noCountry><country name="États-Unis"><region name="Utah"><name sortKey="Sutherland, G R" sort="Sutherland, G R" uniqKey="Sutherland G" first="G R" last="Sutherland">G R Sutherland</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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