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Production of Single Cell Protein from Cassava Starch in Air‐lift Fermenter by Cephalosporium eichhorniae
Author(s) -
Varavinit S.,
Srithongkum P.,
DeEknamkul C.,
Assavanig A.,
Charoensiri K.
Publication year - 1996
Publication title -
starch ‐ stärke
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.62
H-Index - 82
eISSN - 1521-379X
pISSN - 0038-9056
DOI - 10.1002/star.19960481007
Subject(s) - industrial fermentation , fermentation , food science , starch , bioreactor , single cell protein , dilution , industrial and production engineering , chemistry , biology , botany , physics , electrical engineering , engineering , thermodynamics
Batch and continuous cultivations were used to investigate the single cell protein (SCP) production by Cephalosporium eichhorniae 152 in an air‐lift reactor. The fungus was grown in an 8L air‐lift fermenter. The culture medium consisted of cassava as a sole‐carbon source, (NH 4 ) 2 SO 4 as a nitrogen source and KH 2 PO 4 as a buffering agent. The pH of the medium was adjusted to 3.8 and was controlled during fermentation by using an automatic pH‐controller via 0.5 N NaOH. In batch fermentation, 1% of cassava gave the highest yield of 0.4. The optimum condition for continuous fermentation was 1% cassava in feed medium at a dilution rate of 0.4 h ‐1 (396 ml/h where 0.35 was the final yield. The productivity of continuous culture was found to be higher than that of the batch culture (0.135 g/l.h versus 0.04 g/lh).