کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
686727 889115 2006 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Direct production of l(+)-lactic acid from starch and food wastes using Lactobacillus manihotivorans LMG18011
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
Direct production of l(+)-lactic acid from starch and food wastes using Lactobacillus manihotivorans LMG18011
چکیده انگلیسی

This study describes several essential factors for direct and effective lactic acid production from food wastes by Lactobacillus manihotivorans LMG18011, and optimum conditions for simultaneous saccharification and fermentation using soluble starch and food wastes as substrates. The productivity was found to be affected by three factors: (1) initial pH, which influenced amylase production for saccharification of starch, (2) culture pH control which influenced selective production of l(+)-lactic acid, and (3) manganese concentration in medium which improved in production rate and yield of lactic acid. The optimum initial pH was 5.0–5.5, and the fermentation pH for the direct and effective fermentation from starchy substrate was 5.0 based on the yield of l(+)-lactic acid. Under these conditions, 19.5 g l(+)-lactic acid was produced from 200 g food wastes by L. manihotivorans LMG18011. Furthermore, the addition of manganese stimulated the direct fermentation significantly, and enabled complete bioconversion within 100 h.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 97, Issue 13, September 2006, Pages 1554–1562
نویسندگان
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