pH of 7.5 in the medium were suitable for chitinase
production of the above species.
According to the ®ndings of Revah-Moiseev and
Carroad [16], out of dierent yeast cultures, Pichia
kudriavzevii was comparatively a better culture for production
of single cell proteins under submerged fermentation
condition than Candida krusei 57-19 and Candida
krusei 61-287. They further concluded that Pichia
kudriavzevii may be successfully grown in a chitin
hydrolysis product at high temperatures and low pH
values with an end product containing an acceptable
amino acid distribution. According to the economic
analysis of the shrimp shell bioconversion process by
Cosio et al. [119], 6069 kg/day of shell waste can produce
68 kg/day of dry yeast (40% protein, 94%solids).
In a similar study, Patil and Patil [120] also observed
that a molasses fermentation medium supplemented
with 0.25% chitin increased the yield of Saccharomyces
yeast cell mass compared with yeast extract supplemented
and the control without supplementation.