Subjects
-Tags
-Abstract
ASPERGILLUS NIGER K8 was selected from twenty-two fungal
……isolates for α-Amylase production. The crude enzyme was partially purified and precipitated by salting out with ammonium sulphate. The fraction salted out with 60% ammonium sulphate saturation showed the highest specific α-amylase activity with 5.42 folds of purification than that of free extract. The optimum temperature for α-amylase enzyme activity was at 60°C. The enzyme was very stable at 60°C for 1 hr and retained more than 80% of its original activity. The optimum specific activity for A. niger K8 was in a narrow range of pH 5.0-6.0. Alpha amylase enzyme was stable at all pH tested. However, it retains more than 75% of its original activity for 1 h at pH value 5.5.
DOI
10.21608/ejbo.2014.475
Keywords
<i> Aspergillus niger</i>, α-amylase, precipitation, Characterization, Thermal stability, pH stability
Link
https://ejbo.journals.ekb.eg/article_475.html
Detail API
https://ejbo.journals.ekb.eg/service?article_code=475
Publication Title
Egyptian Journal of Botany
Publication Link
https://ejbo.journals.ekb.eg/
MainTitle
-