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Recovery of proteine mineral concentrates from acid whey by electro-activation

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dc.contributor.advisor BEGLEAGA, Nicolae
dc.contributor.author BOLOGA, Mircea
dc.contributor.author VRABIE, Elvira
dc.contributor.author CHIŢANU, Ana
dc.contributor.author LAICIUC, Laura
dc.contributor.author PALADII, Irina
dc.contributor.author STEPURINA, Tatiana
dc.contributor.author VRABIE, Valeria
dc.contributor.author ILIASENCO, Olga
dc.contributor.author POLICARPOV, Albert
dc.contributor.author GONCIARUC, Valeriu
dc.contributor.author SPRINCEAN, Catalina
dc.date.accessioned 2020-02-03T11:23:48Z
dc.date.available 2020-02-03T11:23:48Z
dc.date.issued 2019
dc.identifier.citation BOLOGA, Mircea, VRABIE, Elvira, CHIŢANU, Ana et al. Recovery of proteine mineral concentrates from acid whey by electro-activation. In: Journal of Engineering science. 2019, vol. 26(4), pp. 124-133. ISSN 2587-3474. EISSN 2587-3482. en_US
dc.identifier.issn 2587-3474
dc.identifier.issn 2587-3482
dc.identifier.uri https://www.doi.org/10.5281/zenodo.3591616
dc.identifier.uri http://repository.utm.md/handle/5014/7996
dc.description.abstract An electrophysical wasteless technology is presented based on the electrochemical activation of the acid whey in a periodic regime. Under consideration are variations of such principal parameters as the electric current density, voltage, pH, oxidation-reduction potential, temperature, specific energy consumption, and the degree of isolation of whey proteins in the protein-mineral concentrates (PMCs). It is found that the isolation of whey proteins in the PMCs makes about 80% from the first minutes of the process and remains constant during the rest of it at the current density j=10 mA•cm-2 and the specific energy consumption by 2.5 times lower than during processing at j=20 mA•cm-2, in the latter case, the isolation of whey proteins in the PMCs makes about 73-75%, which allows for decreasing the energy consumption during processing. However, in the liquid phase (LP), the recovery of about 84%, which means that from the first minutes, there are intensively formed protein compounds with a high molecular weight thatwhich cannot be isolated as foam as a result of the ion flotation, remaining in the LP contained in the cathode cell. These investigations demonstrate an opportunity to properly control the processing of the acid whey, which depends on the processing regime (the electric current density) necessary for an optimal isolation of protein fractions in the PMCs, with a simultaneous decrease of the specific energy consumption per a unit of volume. en_US
dc.description.abstract Este prezentat procedeul non-rezidual de procesare electrofizică, ce are la bază activarea electrochimică a zerului acru în regim periodic. Sunt descrise variaţiile parametrilor principali – densitatea curentului electric, voltajul, pH-ul, potenţialul de oxidoreducere, temperatura, consunul specific de energie, gradul de extragere a proteinelor serice în concentrate proteice minerale (CPM). Extragerea proteinelor serice în CPM constitue circa 80% din primele minute și se menţine stabil pe toată perioada procesării la j=10mA/cm2 și un consum specific de energie de 2,5 ori mai mic comparativ cu procesarea la j=20 mA/cm2, unde gradul de extragere a proteinelor serice în CPM (Q, %) este mai mic (73-75%), ce permite reducerea consumului de energie la tratare. În faza lichidă se înregistrează circa 84%, ceea ce indică la o formare intensă a compușilor proteici cu masă moleculară înaltă chiar din primele minute, ce nu pot fi extrași sub formă de spumă ca rezultat al flotării ionice și rămân în faza lichidă, ce se conţine în celula catodului. Aceste cercetări permit gestionarea corectă a procesării zerului acru, ce depinde de regimul de tratare (densitatea curentului electric), pentru extragerea optimă a fracţiilor proteice în CPM și reducerea simultană a consumului specific de energie pe o unitate de volum. ro
dc.language.iso en en_US
dc.publisher Technical University of Moldova en_US
dc.rights Attribution-NonCommercial-NoDerivs 3.0 United States *
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/3.0/us/ *
dc.subject serum proteins en_US
dc.subject proteins en_US
dc.subject electrophysical processing en_US
dc.subject diaphragm electrolyzers en_US
dc.subject current density en_US
dc.subject electrophysical processing en_US
dc.subject whey proteins en_US
dc.subject proteine serice en_US
dc.subject procesare electrofizică en_US
dc.subject electrolizoare cu diafragmă en_US
dc.subject zeruri acre en_US
dc.title Recovery of proteine mineral concentrates from acid whey by electro-activation en_US
dc.title.alternative Extragerea concentratelor proteice minerale din zerul acru la electro-activare en_US
dc.type Article en_US


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