Yeast production from crude sweet whey by a mixed culture ofCandida kefyr LY496 andCandida valida LY497.

Fuzzy Regression Modeling of Batch Cultivation of Lactose Utilising Yeast's Using Nefrit

“…The estimates of initial 1-lmax were similar to values reported for batch growth of Kluyveromyces marxianus (15) and C.ke.fyr (Carlotti, 1991), although the yield coefficient for C.blankii 35 were significantly higher than in similar experiments with C.ke.fyr (8).…”

Improvement of SCP production and BOD removal of whey with mixed yeast culture

“…The biomass yield of S. cerevisiae and the M2 strain (K.lactis) co-culture showed a significant increase from 11.79 and 15.35 g/l (using pure culture in whey without supplementation and with ammonium sulphate supplementation, respectively) to 22.38 g/l. The biomass yield obtained in this condition was greater than those reported for K. marxianus (Bainotti et al 1987), T. cremoris and K. fragilis (Beausejour et al 1981;Litchfield, 1983;Mansour et al 1993), for the mixed cultures of K. fragilis, K.lactis, Torulopsis (Pigache et al 1992) and C. kefyr and C. valida (Carlotti et al 1991). Increasing demand for protein sources of high nutrition value has stimulated the application of SCP in animal feed.…”

“…These intermediate compounds can be metabolized by some other yeast strains. With this regard to increase the biomass yields, the mixed culture of yeast strains has been studied (Carlotti et al 1991;Cristiani-Urbina et al 2000). We used mixed culture of isolated yeast strains (M2, M5, M6 and M11) with Saccharomyces cerevisiae for this purpose.…”

“…This change causes the production of by-metabolic products such as alcohol, aldehydes, esters, etc., which reduce the yields of biomass on whey (Beausejour et al 1981;Inchaurrondo et al 1994;Cristiani-Urbina et al 1997). To avoid this undesirable effect, the mixed yeast culture has been used (Carlotti et al 1991;Cristiani-Urbina et al 2000).…”

Alcohol production from starch by mixed cultures of Aspergillus awamori and immobilized Saccharomyces cerevisiae at different agitation speeds

“…Co-culturing of microorganisms in simultaneous growth and conversion system has been suggested to offer certain advantages over conventional two-step reactor systems. These include better resistance to contamination and improvement in yield (HARRISON 1978, CARLOTTI et al 1990) and more economical than the enzymatic process *) Corresponding author Dr. M. A. FARID;…”