کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
2075389 1544906 2016 5 صفحه PDF سفارش دهید دانلود رایگان
عنوان انگلیسی مقاله ISI
Characterization of starch-accumulating duckweeds, Wolffia globosa, as renewable carbon source for bioethanol production
ترجمه فارسی عنوان
خصوصیات عدسک آبی جمع آوری کننده نشاسته، Wolffia globosa، به عنوان منبع کربن تجدیدپذیر برای تولید بیواتانول
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم کشاورزی و بیولوژیک (عمومی)
چکیده انگلیسی

The growth and starch accumulation ability of two types of duckweeds (Wolffia globosa), designated as duckweeds J and B, respectively, were investigated under different nutrition conditions using HYPONeX. Both duckweeds J and B grew better in rich nutrient condition (5,000-fold diluted HYPONeX solution) than in poor nutrient condition (80,000-fold diluted HYPONeX solution). In terms of starch accumulation, duckweed J accumulated more starch in the rich nutrient condition, whereas duckweed B accumulated more starch in the poor nutrient condition. In the rich nutrient condition, the dry weight of duckweed J increased by about 5.1 folds and the accumulated starch content was about 22% (w/w) of dry duckweed after 1-week cultivation. In the poor nutrient condition, the dry weight of duckweed B increased by about 5.0 folds and the accumulated starch content was about 28% (w/w) of dry duckweed after 1-week cultivation. Furthermore, ethanol production from the duckweeds was investigated using Saccharomyces cerevisiae NBRC0224. The most effective pretreatment of duckweeds for ethanol production was treatment with 1% hydrogen peroxide for 1 h, followed by treatment with 1% sodium hydroxide for 1 h. In the case of the duckweed J, 69 g/L ethanol was produced from 30% (w/v) of the pretreated duckweed with 20 mM urea or 0.1% yeast extract and 30 mM ammonium sulfate. In the case of the duckweed B, 30 g/L ethanol was produced from 30% (w/v) of the non-pretreated duckweed without nitrogen source. In conclusion, the duckweeds, W. globosa, were found to be a promising renewable carbon source for the production of third-generation bioethanol.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biocatalysis and Agricultural Biotechnology - Volume 6, April 2016, Pages 123–127
نویسندگان
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