Bioethanol production by carbohydrate-enriched biomass of Arthrospira (Spirulina) platensis

dc.contributor.author	Markou, G	en
dc.contributor.author	Angelidaki, I	en
dc.contributor.author	Nerantzis, E	en
dc.contributor.author	Georgakakis, D	en
dc.date.accessioned	2014-06-06T06:52:20Z
dc.date.available	2014-06-06T06:52:20Z
dc.date.issued	2013	en
dc.identifier.issn	19961073	en
dc.identifier.uri	http://dx.doi.org/10.3390/en6083937	en
dc.identifier.uri	http://62.217.125.90/xmlui/handle/123456789/5967
dc.subject	Acid hydrolysis	en
dc.subject	Arthrospira (Spirulina)	en
dc.subject	Bioethanol	en
dc.subject	Fermentation	en
dc.subject	Microalgae	en
dc.subject	Pretreatment	en
dc.subject	Thermal hydrolysis	en
dc.subject.other	Acid hydrolysis	en
dc.subject.other	Arthrospira (Spirulina)	en
dc.subject.other	Micro-algae	en
dc.subject.other	Pre-Treatment	en
dc.subject.other	Thermal hydrolysis	en
dc.subject.other	Biomass	en
dc.subject.other	Ethanol	en
dc.subject.other	Fermentation	en
dc.subject.other	Saccharification	en
dc.subject.other	Sugars	en
dc.subject.other	Yeast	en
dc.subject.other	Bioethanol	en
dc.title	Bioethanol production by carbohydrate-enriched biomass of Arthrospira (Spirulina) platensis	en
heal.type	journalArticle	en
heal.identifier.primary	10.3390/en6083937	en
heal.publicationDate	2013	en
heal.abstract	In the present study the potential of bioethanol production using carbohydrate-enriched biomass of the cyanobacterium Arthrospira platensis was studied. For the saccharification of the carbohydrate-enriched biomass, four acids (H2SO4, HNO3, HCl and H3PO4) were investigated. Each acid were used at four concentrations, 2.5 N, 1 N, 0.5 N and 0.25 N, and for each acid concentration the saccharification was conducted under four temperatures (40 °C, 60 °C, 80 °C and 100 °C). Higher acid concentrations gave in general higher reducing sugars (RS) yields (%, gRS/gTotal sugars) with higher rates, while the increase in temperature lead to higher rates at lower acid concentration. The hydrolysates then were used as substrate for ethanolic fermentation by a salt stress-adapted Saccharomyces cerevisiae strain. The bioethanol yield (%, gEtOH/gBiomass) was significantly affected by the acid concentration used for the saccharification of the carbohydrates. The highest bioethanol yields of 16.32% ± 0.90% (gEtOH/gBiomass) and 16.27% ± 0.97% (gEtOH/gBiomass) were obtained in hydrolysates produced with HNO3 0.5 N and H2SO4 0.5 N, respectively. © 2013 by the authors.	en
heal.journalName	Energies	en
dc.identifier.issue	8	en
dc.identifier.volume	6	en
dc.identifier.doi	10.3390/en6083937	en
dc.identifier.spage	3937	en
dc.identifier.epage	3950	en