Maja Leitgeb (Avtor), Mateja Primožič (Avtor), Željko Knez (Avtor)

Povzetek

Proteinase from Carica papaya latex was tested on its thermal stability at atmospheric pressure and in supercritical carbon dioxide, near-critical propane and dimethyl-ether. In supercritical carbon dioxide at 300 bar thermalactivation of the examined proteinase was improved in the comparison toatmospheric pressure. In propane and dimethyl-ether (300 bar) activity of the examined proteinase decreased. Influence of compressionžexpansion cycles on residual activity of the same proteinase in supercritical carbon dioxide (300 bar and 50 °C) was studied, as well. Different ways of transition from supercritical to low-pressure-state were used which affected residual activityof the proteinase.Addition of water in the system increased activity of proteinase from C. papaya, which was incubated in supercritical carbon dioxide for 24 h. Optimum amount of water was found to be between 0.5 and 0.7 g/L.

Ključne besede

kemijska procesna tehnika;visokotlačna tehnologija;superkritični CO2;proteinaze;termična stabilnost;tlak;aktivnost enzimov;vsebnost vode;gosti plini;chemical processing;high pressure technology;supercritical CO2;proteinase;thermal stability;pressure stability;enzyme activity;water content;dense gases;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: UM FKKT - Fakulteta za kemijo in kemijsko tehnologijo
UDK: 66.09-987
COBISS: 9162518 Povezava se bo odprla v novem oknu
ISSN: 0896-8446
Št. ogledov: 1390
Št. prenosov: 23
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

Sekundarni jezik: Angleški jezik
Sekundarne ključne besede: kemijska procesna tehnika;visokotlačna tehnologija;superkritični CO2;proteinaze;termična stabilnost;tlak;aktivnost enzimov;vsebnost vode;plini visoke gostote;
URN: URN:SI:UM:
Strani: str .27-34
Letnik: ǂVol. ǂ33
Zvezek: ǂiss. ǂ1
Čas izdaje: 2005
ID: 8718456