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Articles by Shazia Mirza
Total Records ( 4 ) for Shazia Mirza
  Mirza Ahsen Baig , Kiran Shafiq , Shazia Mirza , Sikander Ali and Ikram-ul-Haq
  Saccharomyces species GCA-II was used to investigate the effect of mineral constituents on the production of β -fructofuranosidase in submerged fermentation. Different organic nitrogen and phosphate sources in varied concentrations were tested for optimal production of enzyme. The results indicated that enzyme production increased from 107.42 to 168.58 U ml-1. Thus, Saccharomyces strain GCA-II gave maximal β -fructofuranosidase in submerged fermentation when urea (3.0 g l-1) as a nitrogen source and K2HPO4 (0.20 g l-1) as phosphate source was supplied in fermentation medium.
  Umar Farooq Awan , Shazia Mirza , Kiran Shafiq , Sikander Ali and Ikram-ul-Haq
  The present study is concerned with the biosynthesis of lipase by Rhizopus oligosporous ISUUV-16 through solid-state fermentation. The optimal substrate for the biosynthesis of lipase was almond meal at the level of 10 g per 250 ml Erlenmeyer flask. The optimal lipase production was obtained when incubated at 300C, for 48 h. Maximal lipase activity of 54 Ug-1 was reached at 1 % level of inoculum. Water was used as diluent for enzyme extraction from fermented mash. Substrate to diluent ratio was kept at 1:0.7.
  Mirza Ahsen Baig , Kiran Shafiq , Sikander Ali , Shazia Mirza , Zafar Siddiq and Ikram-ul-Haq
  The enzyme βfructofuranosidase attacks beta-D-fructofuranoside (raffinose, stachyose and sucrose) from the fructose end. Saccharomyces GCA-II was used for the production of βfructofuranosidase by submerged fermentation. The effect of sucrose concentration and incubation time was worked out for maximal enzyme production. Sucrose at the level of 30.0 g l-1 in fermentation medium was found to exert an inducible effect on enzyme synthesis by Saccharomyces strain after 48 h of inoculation. Enzyme production increased from 107.42 U ml-1 to 118.58 U ml-1 after optimization of the cultural conditions. Specific product rate and specific growth rate were also determined for the production of βfructofuranosidase by Saccharomyces in shake flask.
  Mirza Ahsen Baig , Kiran Shafiq , Shazia Mirza , Sikander Ali and Ikram-ul-Haq
  The primary application of invertase from Saccharomyces cerevisiae is in the confectionary industry. In Pakistan, much of this enzyme is imported. The influence of the carbon source during invertase production is well known, but little is understood about the nitrogen source influence. We examined three different nitrogen sources using Saccharomyces cerevisiae strain for invertase production. Saccharomyces species GCA-II was used to investigate the effect of urea and other nitrogen sources on the production of β-fructofuranosidase in submerged fermentation. It was found that when a very little amount of urea was added to the fermentation medium it showed marked increase in β-fructofuranosidase production i.e., from 121.35 to 158.26 U/ml.
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