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Preučevanje učinkovitosti proteaznih encimov v plemenitilnih procesih volne : doktorska nalogaJus, SuzanaZ uvedbo biotehnoloških postopkov plemenitenja se lahko izognemo nastanku organsko vezanih halogenov (AOX), ki nastanejo med procesom kemičnega plemenitenja pri uporabi NaDCI in tako vplivamo na ... ekološko neoporečnost odpadnih tehnoloških voda. Namen doktorskega dela je bil preučiti učinkovitost različnih proteaznih encimov v plemenitilnih procesih volne proti polstenju in raziskati učinkovitost encimske obdelave na nadaljnje postopke plemenitenja v odvisnosti od časa. Uporabljeni so bili proteazni encimi v nemodificirani in s polietilenglikolom (P EG) modificirani obliki različnega izvora (B. lentus, B.subtilis, B. sp. in B. licheniformis). Prav tako so bili izvedeni kombinirani postopki plemenitenja, ki so vključevali predobdelave s corona-plazmo ter oksidacijski in redukcijski postopek. Z UV/VIS spektrofotometrijo so bili opredeljeni parametri encimske aktivnosti, pri čemer je bilo ugotovljeno, da se aktivnost encimom po modifikaciji s P EG zmanjša za 70 % njihova molska masa pa se poveča v povprečju za 5 do 7 krat v primerjavi z nemodificiranimi encimi. Stopnja polstivosti se je v primeru uporabe modificiranih proteaz znižala najbolj pri neobdelani volni in uporabi z 1,1 kDa PEG modificirano B. subtilis proteazo (8 %) že po 30 minutah encimske obdelave. Pri enaki obdelavi z nemodificiranimi proteazami se je polstivost neobdelane volne znižala za največ 20% (primer uporabe B. lentus proteaze) pri čemer uporaba le-teh vpliva na parametre izgube mase, trdnosti in razteznosti vlakna. Najbolj uspešen (100 %) proti-polstilni učinek je bil dosežen s kombinacijo Corona-plazma in nemodificirane B. lentus proteaze. Kemijske spremembe volnenih vlaken so bile dejinirane s SDS-PAGE elektroforezo, pri čemer je bilo ugotovljeno, da izbrani encimi v nemodificirani obliki prednostno hidrolizirajo nekeratinkse dele vlakna, medtem ko je pri modificiranih encimih hidroliza omejena le na proteine volnene endokutikule. Iz barvalnih lastnosti encimsko obdelane volne je bilo zaključeno, da uporaba proteaz pozitivno vpliva na hitrost in količino izčrpanega barvila v primeru nemodificiranih proteaz (B. subtilis 97%), z uporabo modificiranih proteaz pa se ti parametri zmanjšajo (92%). Encimski postopki plemenitenja so ekološko sprejemljivejši v primeru uporabe nemodificiranih proteaz v primerjavi s PEG modificiranimi zaradi dodatka cianurklorida.Type of material - dissertation ; adult, seriousPublication and manufacture - Maribor : [S. Jus], 2006Language - slovenianCOBISS.SI-ID - 229690624
Author
Jus, Suzana
Other authors
Sfiligoj-Smole, Majda |
Stana-Kleinschek, Karin |
Gübitz, Georg M.
Topics
tekstilna industrija |
oplemenitenje tkanin |
disertacije |
tekstilna tehnologija |
tekstilna vlakna |
celulozna vlakna |
viskoza |
plemenitenje tekstilij |
plemenitenje tekstilij
Call number – location, accession no. ... |
Copy status | Reservation |
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Skladišče II 0000064526 Skladišče II 64526 |
available - reading room
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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DRS, in which the journal is indexed
Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Jus, Suzana | 22419 |
Sfiligoj-Smole, Majda | 04171 |
Stana-Kleinschek, Karin | 07814 |
Gübitz, Georg M. |
Source: Personal bibliographies
and: SICRIS
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