کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9488248 | 1330985 | 2005 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Artrocarpus heterophyllus-a potential substrate for citric acid biosynthesis using Aspergillus niger
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
دانش تغذیه
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The growing demand for citric acid and the need for alternative materials as substrates in the recent years has led to the choice of a novel and economically viable substrate namely, Artrocarpus heterophyllus for citric acid biosynthesis. A pilot scale study was done using this substrate and the conditions required for preparing a good substrate from jack fruit carpel fibre were optimized. Hydrolysis of jack fruit carpel fibre with 14.6Â mol/l HCl, followed by fermentation with Aspergillus niger produced 73Â g/l of citric acid in a period of 48Â h. Enrichment of the medium was also tried by sugar supplementation and the efficiency of the fermentation medium thus prepared in producing citric acid was compared with the synthetic medium. The products of the microbial metabolism namely total titrable acidity, citric acid, intracellular proteins, extracellular proteins, amylase activity, lipid and biomass contents were determined periodically. Experimentally observed growth stages were used for mathematical modeling to estimate the kinetic parameters. The values calculated agree with the experimental ones.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: LWT - Food Science and Technology - Volume 38, Issue 1, February 2005, Pages 89-93
Journal: LWT - Food Science and Technology - Volume 38, Issue 1, February 2005, Pages 89-93
نویسندگان
Ar. Angumeenal, D. Venkappayya,