BF, Dept. of Food Science and Technology, Lj. (BFZIV)
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Čiščenje belih moštov s prostimi in imobiliziranimi encimi = White grape musts clarification by free and immobilized enzymesPlahuta, Primož ; Raspor, PeterPri uporabi pektolitiřnih encimov, kot biokatalizatorjev za odstranjevanje koloidnih snovi pred fermentacijo, se porajajo dolořeni pomisleki: razgradnja depsidov, deesterifikacija metanola in visoka ... cena, ki omejujejo njihovo uporabnost. Zato je bil namen raziskave pripraviti biokatalizator z imobiliziranimi encimi kot procesnimi agensi. Celulaze (A. niger, EC 3.2.1.4-(Fluka 22174), 0.67U/mg) so bile imobilizirane na Ca-alginatni gel. Uporaba prostih in imobiliziranih encimov je potekala v realnih sistemih-moǴtih sorte rebula, laǴki rizling ter pergolin, v meǴalnem bioreaktorju ali bioreaktorju z nasutim slojem. Poizkusi so pokazali podobno kinetiko řiǴřenja moǴtov s prostimi in imobiliziranimi encimi. Pri sorti laǴkirizling se je izkazalo, da uporaba celulaz ni nujno potrebna, medtem ko so pri sorti rebula pospeǴile řiǴřenje. Tudi pri moǴtu sorte pergolin, ki je bil pridelan iz grozdja mořno okuÍenega z avtohtono plesnijo, so proste in imobilizirane celulaze pospeǴile řiǴřenje, řeprav se je řas do delne zbistritve moǴta mořno podaljǴal v primerjavi z moǴtoma sort laǴki rizling in rebula. Imobilizirani encimi so brez dodatka stabilizatorjev ohranili aktivnost 9 dni in pri krajǴih řiǴřenjih niso povzrořali negativnih senzoriřnih zaznav v moǴtih.Source: Tehnologija, hrana, zdravje. Knjiga del = Technology, food, nutrition. Proceedings (str. P 19-08, 1025-1030)Type of material - conference contributionPublish date - 1997Language - slovenianCOBISS.SI-ID - 1869944
Author
Plahuta, Primož |
Raspor, Peter
Topics
encimi |
celulaze |
imobilizacija |
mošt |
čiščenje moštov |
enzymes |
cellulase |
immobilization |
grape musts |
clarification
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source: Tehnologija, hrana, zdravje. Knjiga del = Technology, food, nutrition. Proceedings (str. P 19-08, 1025-1030)
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Plahuta, Primož | 15098 |
Raspor, Peter | 04001 |
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