Cited by 14Enzyme Production and CharacterizationAdvanced Scientific Research MethodsEnzyme Catalysis and Immobilization

Optimization of milk-clotting protease production by a local isolate of Aspergillus niger FFB1 in solid-state fermentation

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Bensmail, Souhila, Mechakra, Aicha, Fazouane-Naimi, Fethia·2015·Journal of Microbiology Biotechnology and Food Sciences

Abstract

The need to surmount the limitation of obtaining rennin, has been actively pushed researches to find new substitutes that present high milk-clotting activity which enables the production of high yields of cheese. In this study, the production of extracellular milk-clotting protease by locally isolated fungal specie, Aspergillus niger FFB1 under solid-state fermentation (SSF) using cheep agro-industrial byproduct (wheat bran) was optimized. The effects of several physicochemical and environmental factors were investigated to select the optimal conditions that ensure the best milk-clotting activity by application of "One-factor-at-a-time" method. A trial of cheese production using the crude extract was also carried out. The maximum enzyme activity (830 SU/g bran with a ratio MCA/PA of 4.25) was obtained under the optimum conditions of temperature (30°C), spores concentration (106 spores/mL), incubation time (72 hours), and moisture content of solid substrate (39.2%) adjusted suitably with mineral solution (Czapek-Dox) of pH 4.

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Crossref · 10.15414/jmbfs.2015.4.5.467-472

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36 of 36 references verified0 citation errors · 0 not checkable

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  • Protease production by Aspergillus niger, Aspergillus oryzae, and various Aspergillus species reached its peak in the pH range of 4 to 5.

    “Meanwhile, protease production by A. niger, A. oryzae, and various Aspergillus species reached its peak in the pH range of 4 to 5 (Vishwanatha et al., 2010b;Bensmail et al., 2015).”

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Authors
Bensmail, S., Mechakra, A., & Fazouane-Naimi, F.
Venue
Journal of Microbiology Biotechnology and Food Sciences
Published
2015-04-01
Volume
4
Issue
5
Pages
467-472
ISSN
1338-5178 (ISSN-L)
OpenAlex
W194835071
Cited by
14
References
36
Citations by year
2025: 4 · 2024: 3 · 2021: 2 · 2020: 2 · 2019: 3
FWCI
0.00
Type
journal article
Language
en
Open access
Locations
  • Journal of Microbiology Biotechnology and Food Sciences (publishedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biotechnology › Enzyme Production and Characterization
  • Life Sciences › Agricultural and Biological Sciences › Food Science › Advanced Scientific Research Methods
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Enzyme Catalysis and Immobilization
Keywords
Aspergillus niger, solid-state fermentation, wheat bran, agro-industrial by-products, cheese production, enzyme production optimization, one-factor-at-a-time method, substrate moisture, spore concentration

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