Andreja Goršek (Avtor), Marko Tramšek (Avtor)

Povzetek

The main objective of the present study was to design a continuous two-stage bioreactor system for kefir grains production. Based on the experimental data of time-depended kefir grain mass increase and average pH profile during kefir grains batch propagation, parameters of predictive growth and exponential pH models were initially estimated. Afterwards, the non-linear programming (NLP) optimization problem for estimating the optimal volumes of two unequal in series connected continuously stirred tank bioreactors (CSTB) has been developed. The NLP problem is based on criterion of minimal total holding time (MTHT), kefir grain mass balances in CSTB and parameters of the growth and pH models. The results showed that novel kefir grains production plant with two-stage continuous operation, at capacity, qm,KG,pr=3 kgh-1 and conversion, Xo,2=0.980, would primarily require investment in two CSTB with V1=5.93 m3 and V2=5.62 m3, respectively. Technological and economical authorization for a two-stage continuous bioreactor system was mainly confirmed with a more than five times lower total bioreactor volume compared to one-stage plant.

Ključne besede

kemijska procesna tehnika;bioprocesi;mlečni izdelki;kefir;kefirna zrna;chemical processing;bioprocesses;milk products;kefir grains production;bioreactor design;modeling;optimization;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: UM FKKT - Fakulteta za kemijo in kemijsko tehnologijo
UDK: 66.01:637.1
COBISS: 12374550 Povezava se bo odprla v novem oknu
ISSN: 1369-703X
Št. ogledov: 2450
Št. prenosov: 107
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;bioprocesi;mlečni izdelki;kefir;kefirna zrna;
URN: URN:SI:UM:
Strani: str. 153-158
Letnik: ǂVol. ǂ42
Zvezek: ǂiss. ǂ1
Čas izdaje: Nov. 2008
DOI: 10.1016/j.bej.2008.06.009
ID: 8716981