SALLY NEGM1,2, MOHAMMAD EL-METWALLY3, WESAM ELDIN SABER4, SAHAR ABO-NEIMA5, MAHMOUD MOUSTAFA6,7,*, ATTALLA EL-KOTT6,8
BIOCELL, Vol.45, No.1, pp. 119-127, 2021, DOI:10.32604/biocell.2021.012011
- 26 January 2021
Abstract The need for the bacterial proteinase is rapidly growing, urging to catch a lowcost medium for the microbial
fermentation, nanoparticles can play a vital role in this respect. The proteinase of Talaromyces purpureogenus was
produced on the tubers of Helianthus tuberosus that also operated as solid support for the fermentation process. The
interface amongst nitrogen sources (NH4Cl and yeast extract) was investigated, applying the statistical modeling of
central composite design under solid-state fermentation. The optimum medium for proteinase secretion was
stimulated by 979.82 mg NH4Cl and 437.68 mg yeast extract per 100 g substrate, yielding 108.15 U/g tubers.… More >
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