Abstract：
:This paper focuses on a novel process for adding value to algae residue. In current processes oleaginous microalgae are grown and harvested for lipid production leaving a lipid-free algae residue. The process described here includes conversion of the carbohydrate fraction into glucose prior to lipid extraction. This can be fermented to produce up to 15% additional lipids using another oleaginous microorganism. It was found that in situ enzymes can hydrolyze storage carbohydrates in the algae into glucose and that a temperature of 55 °C for about 20 h gave the best glucose yield. Up to 75% of available carbohydrates were converted to a generic fermentation feedstock containing 73 g/L glucose. The bioconversion step was found to increase the free water content by 60% and it was found that when the bioconversion was carried out prior to the extraction step, it improved the solvent extractability of lipids from the algae.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Trzcinski AP,Hernandez E,Webb Cdoi
10.1016/j.biortech.2012.03.078subject
Has Abstractpub_date
2012-07-01 00:00:00pages
295-301eissn
0960-8524issn
1873-2976pii
S0960-8524(12)00542-1journal_volume
116pub_type
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