کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7064851 1459828 2014 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Comparison of strategies to overcome the inhibitory effects in high-gravity fermentation of lignocellulosic hydrolysates
ترجمه فارسی عنوان
مقایسه استراتژی های غلبه بر اثرات مهاری در تخمیر گرانش هیدرولیز لجن خالص
کلمات کلیدی
بیوتکنول، مهارکنندههای لیگنوسلولوزیک، چوب نرم مکمل تغذیه ای، سم زدایی،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
چکیده انگلیسی
The dilute acid-pretreated spruce used as substrate in this study was not fermentable under HG conditions (200 g kg−1 water-insoluble solids) when no improvement method was applied. In HG simultaneous saccharification and fermentation at 30 °C combined with a 24 h pre-hydrolysis step, the detoxification of pretreated spruce with reducing agent (Na2S2O4) gave the best result with an ethanol yield of 57% (on total sugars) of the maximum theoretical and a volumetric productivity of 1.58 g dm−3 h−1. In HG separate hydrolysis and fermentation, nutrients supplementation gave better final ethanol yields than detoxification of the material, reaching an ethanol yield of about 60% of the theoretical (on total sugars). The results obtained, showed an increase in severity of inhibitory effects with temperature increase. Improved cell viability was observed when detoxified material was used and also when yeast extract addition was coupled with adaptation of the cells to the hydrolysate.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biomass and Bioenergy - Volume 65, June 2014, Pages 79-90
نویسندگان
, ,