Effects of harvesting method and growth stage on the flocculation of the green alga Botryococcus braunii

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Title
Effects of harvesting method and growth stage on the flocculation of the green alga Botryococcus braunii
Author(s)
S J Lee; S B Kim; J E Kim; G S Kwon; Byung Dae Yoon; Hee-Mock OH
Bibliographic Citation
Letters in Applied Microbiology, vol. 27, pp. 14-18
Publication Year
1998
Abstract
Flocculating activity was determined to evaluate the effective harvesting method and an optimal growth stage for the recovery of the green alga Botryococcus braunii growing in batch cultures. Flocculating activity was highest at 2 weeks of incubation, regardless of harvesting methods. The degree of flocculation was different with harvesting methods and growth stages. A high pH value (pH 11) was more effective for flocculation than treatment with aluminium sulphate or a microbial flocculant, Pestan, until the third week of incubation. The lipid content of the algae on a dry weight basis was unaffected by harvesting methods. These results indicate that the most effective harvesting method is to adjust pH to 11 after 2 weeks of incubation.
ISSN
0266-8254
Publisher
Wiley
DOI
http://dx.doi.org/10.1046/j.1472-765X.1998.00375.x
Type
Article
Appears in Collections:
Division of Biomaterials Research > Cell Factory Research Center > 1. Journal Articles
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