NDLI: Microwave Assisted Enzymatic Hydrolysis of Larch for L-Lactic Acid Production

Content Provider	IEEE Xplore Digital Library
Author	Yang Xue-xin Fang Gui-zhen
Copyright Year	2010
Abstract	Glucose production from pretreated larch by cellulose enzymatic hydrolysis with cellulase was investigated and compared with no pretreatment, as a reference. The larch was pretreated with microwave, sulfuric acid hydrolysis and dilute sodium hydroxide solution hydrolysis respectively. The cellulose material was also submitted to a pretreatment with dilute sodium hydroxide solution hydrolysis followed by microwave and with dilute sulfuric acid solution hydrolysis followed by microwave separately. The enzymatic hydrolysis experiments were carried out at 50℃, 50 g/l dry matter (DM) solid substrate concentration and 15 filter paper unit (IU)/g DM of a commercial cellulase. Fermentable sugar were able to be produced from all the pretreated larches with an overall yield of 10-30% of the maximum theoretical yield, based on the glucan available in the solid and liquid substrate. The larch pretreated with acid and microwave had the best yield as 30% followed by the larch pretreated with dilute sodium hydroxide solution with an overall yield of 18% with 15 IU/g DM of cellulase. Glucose was the main product with enzymatic hydrolysis yield ratio 11.74%in the sulfuric acid pretreated larch, while with enzymatic hydrolysis yield ratio 23.44%in the dilute sodium hydroxide solution pretreated larch under enzymatic hydrolysis conditions. These advantages, along with its negative price, make this solid a valuable raw material for L-lactic acid production.
Starting Page	1
Ending Page	4
File Size	323499
Page Count	4
File Format	PDF
ISBN	9781424447121
ISSN	21517622
DOI	10.1109/ICBBE.2010.5516665
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-06-18
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Materials science and technology Costs Laboratories Chemical products Production Forestry Solids Biochemistry Delta modulation Biomass
Content Type	Text
Resource Type	Article

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