Abstract:
:In this study, mucilage, a residue from coffee production, was investigated as substrate in fermentative l(+)-lactic acid production. Mucilage was provided as liquid suspension consisting glucose, galactose, fructose, xylose and sucrose as free sugars (up to 60gL(-1)), and used directly as medium in Bacillus coagulans batch fermentations carried out at 2 and 50L scales. Using mucilage and 5gL(-1) yeast extract as additional nitrogen source, more than 40gL(-1) lactic acid was obtained. Productivity and yield were 4-5gL(-1)h(-1) and 0.70-0.77g lactic acid per g of free sugars, respectively, irrespective the scale. Similar yield was found when no yeast extract was supplied, the productivity, however, was 1.5gL(-1)h(-1). Down-stream processing of culture broth, including filtration, electrodialysis, ion exchange chromatography and distillation, resulted in a pure lactic acid formulation containing 930gL(-1)l(+)-lactic acid. Optical purity was 99.8%.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Neu AK,Pleissner D,Mehlmann K,Schneider R,Puerta-Quintero GI,Venus Jdoi
10.1016/j.biortech.2016.03.122subject
Has Abstractpub_date
2016-07-01 00:00:00pages
398-405eissn
0960-8524issn
1873-2976pii
S0960-8524(16)30425-4journal_volume
211pub_type
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journal_title:Bioresource technology
pub_type: 杂志文章,评审
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更新日期:2020-03-01 00:00:00
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pub_type: 杂志文章
doi:10.1016/j.biortech.2018.04.031
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pub_type: 杂志文章
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doi:10.1016/j.biortech.2009.01.029
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journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2016.03.107
更新日期:2016-07-01 00:00:00
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pub_type: 杂志文章
doi:10.1016/j.biortech.2012.07.011
更新日期:2012-11-01 00:00:00
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更新日期:2007-09-01 00:00:00
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