کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10231322 1153 2005 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Significance of bed porosity, bran and specific surface area in solid-state cultivation of Aspergillus oryzae
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بیو مهندسی (مهندسی زیستی)
پیش نمایش صفحه اول مقاله
Significance of bed porosity, bran and specific surface area in solid-state cultivation of Aspergillus oryzae
چکیده انگلیسی
In this paper, the effects of bed porosity, bran and specific surface area on the oxygen uptake rate and α-amylase production during growth of Aspergillus oryzae on wheat grain and wheat-flour substrate are reported. The high oxygen uptake rate found during cultivation of A. oryzae on wheat-flour substrate was not reached on wheat grain. This is mainly due to the bran of the wheat grain. Using wheat-flour substrates, it was shown that extra bed porosity increased the α-amylase production and oxygen uptake rates. Furthermore, the peak oxygen uptake rate decreased with increasing surface area-volume ratio of the substrate particles, while the α-amylase production and the cumulative oxygen uptake per gram of initial substrate dry matter increased. The present work does not support a direct correlation between aerial mycelia and enzyme production. There is, however, a correlation between the α-amylase yield and the cumulative oxygen uptake (not the uptake rate). This implies that aerial mycelia could accelerate α-amylase production even if they do not increase the yield.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biomolecular Engineering - Volume 22, Issue 4, October 2005, Pages 133-139
نویسندگان
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