In this study, we found that Rhodotorula mucilaginosa TJY15a could accumulate 48.8% (w/w) oil from
hydrolysate of inulin and its cell dry weight reached 14.8 g/l during the batch cultivation while it could
accumulate 48.6% (w/w) oil and 52.2% (w/w) oil from hydrolysate of extract of Jerusalem artichoke tubers
and its cell dry weight reached 14.4 g/l and 19.5 g/l during the batch and fed-batch cultivations, respectively. At the end of the fed-batch cultivation, only 0.04% of reducing sugar and 0.08% of total sugar were
left in the fermented medium. Over 87.6% of the fatty acids from the yeast strain TJY15a cultivated in the
hydrolysate of extract of Jerusalem artichoke tubers was C16:0, C18:1 and C18:2, especially C18:1 (54.7%).
Therefore, the results show that hydrolysates of inulin and extract of Jerusalem artichoke tubers were
also the good materials for single cell oil production.
In this study, we found that Rhodotorula mucilaginosa TJY15a could accumulate 48.8% (w/w) oil fromhydrolysate of inulin and its cell dry weight reached 14.8 g/l during the batch cultivation while it couldaccumulate 48.6% (w/w) oil and 52.2% (w/w) oil from hydrolysate of extract of Jerusalem artichoke tubersand its cell dry weight reached 14.4 g/l and 19.5 g/l during the batch and fed-batch cultivations, respectively. At the end of the fed-batch cultivation, only 0.04% of reducing sugar and 0.08% of total sugar wereleft in the fermented medium. Over 87.6% of the fatty acids from the yeast strain TJY15a cultivated in thehydrolysate of extract of Jerusalem artichoke tubers was C16:0, C18:1 and C18:2, especially C18:1 (54.7%).Therefore, the results show that hydrolysates of inulin and extract of Jerusalem artichoke tubers werealso the good materials for single cell oil production.
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