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Partitioning of cellulolytic activity in the polyethylene glycol/dextran two-phase systems
Raspodela celulolitičke aktivnosti u dvofaznim sistemima polietilenglikol/dekstran
dc.creator | Antov, Mirjana | |
dc.creator | Jugović, Branimir | |
dc.creator | Gvozdenović, Milica | |
dc.creator | Knežević-Jugović, Zorica | |
dc.date.accessioned | 2021-03-10T11:44:17Z | |
dc.date.available | 2021-03-10T11:44:17Z | |
dc.date.issued | 2012 | |
dc.identifier.issn | 1450-7188 | |
dc.identifier.uri | http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2032 | |
dc.description.abstract | This study is concerned with the partitioning of cellulolytic activity in the polyethylene glycol/dextran two-phase systems. In the system of 10% (w/w) polyethylene glycol 1500/5% (w/w) dextran 500,000/80% (w/w) crude enzyme at the pH 5, 100%, yield of cellulolytic activity from Penicillium sp. in the top phase was achieved in a single extraction step. Addition of KH2PO4 to this system at a concentration of 15 mmol/L improved the purification factor in the top phase for cellulolytic activity from crude preparation to a value of 2.6, although it had an adverse effect on the yield in the same phase. | en |
dc.description.abstract | U radu je ispitana raspodela celulolitičke aktivnosti u vodenim dvofaznim sistemima polietilenglikol/dekstran. Maksimalno moguć 100% prinos celulolitičke aktivnosti dobijene kultivacijom Penicillium sp. postignut je u dvofaznom sistemu sastava 10% (m/m) polietilenglikol 1500/5% (m/m) dekstran 500000/ 80% (m/m) sirovi enzim na pH 5 u samo jednom koraku ekstrakcije. Dodatak KH2PO4 u koncentraciji 15 mmol/l u ovaj sistem, iako je smanjio raspodelu celulolitičke aktivnosti iz sirovog enzimskog preparata u gornju fazu sistema, poboljšao je faktor prečišćavanja u toj fazi na vrednost 2,6. Razlike u odzivu između celulolitičkih aktivnosti iz dva ispitivana izvora na promene faktora koji utiču na raspodelu mogu se objasniti različitom kompleksošću njihovih matriksa - komercijalnog, delimično prečišćenog, i sirovog neprečišćenog preparata dobijenog kultivacijom. Naime, i prisustvo samih kontaminenata može dodatno uticati na raspodelu enzimske aktivnosti. | sr |
dc.publisher | Faculty of Technology, Novi Sad | |
dc.relation | info:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/46010/RS// | |
dc.rights | openAccess | |
dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/4.0/ | |
dc.source | Acta periodica technologica | |
dc.subject | aqueous two-phase system | en |
dc.subject | cellulolytic activity | en |
dc.subject | partitioning | en |
dc.subject | purification | en |
dc.subject | vodeni dvofazni sistem | sr |
dc.subject | celulolitička aktivnost | sr |
dc.subject | raspodela | sr |
dc.subject | prečišćavanje | sr |
dc.title | Partitioning of cellulolytic activity in the polyethylene glycol/dextran two-phase systems | en |
dc.title | Raspodela celulolitičke aktivnosti u dvofaznim sistemima polietilenglikol/dekstran | sr |
dc.type | article | |
dc.rights.license | BY-NC-ND | |
dc.citation.epage | 158 | |
dc.citation.issue | 43 | |
dc.citation.other | (43): 151-158 | |
dc.citation.rank | M24 | |
dc.citation.spage | 151 | |
dc.identifier.doi | 10.2298/APT1243151A | |
dc.identifier.fulltext | http://TechnoRep.tmf.bg.ac.rs/bitstream/id/8924/1450-71881243151A.pdf | |
dc.identifier.scopus | 2-s2.0-84873588612 | |
dc.type.version | publishedVersion |