Kappaphycus alvarezii as a source of bioethanol

Khambhaty, Yasmin; Mody, Kalpana; Gandhi, Mahesh; Thampy, S. K.; Maiti, Pratyush; Brahmbhatt, Harshad; Eswaran, K.; Ghosh, Pushpito K.

doi:10.1016/j.biortech.2011.10.015

Cited by 177 publications

(52 citation statements)

References 15 publications

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“…Second, neutralization of the hydrolysate with Ca(OH) 2 [10] and NH 4 OH to pH 6.4 to 6.8. Solution was stirred for 30 minutes and followed by activated charcoal adsorption 2.5%, 5% and 7.5% (w / v) for 15, 30, and 45 minutes at a temperature of 40 o C.…”

Section: Detoxificationmentioning

confidence: 99%

Bioethanol Production from Seaweed Eucheuma cottonii by Neutralization and Detoxification of Acidic Catalyzed Hydrolysate

Fakhrudin¹,

Setyaningsih²,

Rahayuningsih³

2014

IJESD

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Section: Detoxificationmentioning

confidence: 99%

Bioethanol Production from Seaweed Eucheuma cottonii by Neutralization and Detoxification of Acidic Catalyzed Hydrolysate

Fakhrudin¹,

Setyaningsih²,

Rahayuningsih³

2014

IJESD

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“…after fermentation of K. alvarezii acid hydrolysate (Khambhaty et al, 2012). In contrast, Cho et al, (2014) utilizing S. cerevisiae acclimated to high concentration of galactose reached P P = 0.15 g L and Y P/S = 0.44 lower than Sc Gal -B Gal using acid hydrolysate from G. amansii.…”

Section: Ethanol Productivitymentioning

confidence: 87%

“…Based on the hydrolysis conditions utilized for Kappaphycus alvarezii seaweed (Hargreaves et al, 2013;Khambhaty et al, 2012;Meinita et al, 2012a), a species of the same family as S. filiformis, the levels of the variables time and acid concentration were defined. The acid hydrolysis of the dried seaweed (7.0% moisture) was conducted in an autoclave at 121°C and 50.0 g L-1 solid loading.…”

Section: Acid Hydrolysis Of the Seaweedmentioning

confidence: 99%

<b>Optimized acid hydrolysis of the polysaccharides from the seaweed <i>Solieria filiformis</i> (Kützing) P.W. Gabrielson for bioethanol production

Castro

Benevídes

Cabral

et al. 2017

Acta Sci. Biol. Sci.

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ABSTRACT. The seaweeds are bio-resource rich in sulfated and neutral polysaccharides. The tropical seaweed species used in this study (Solieria filiformis), after dried, shows 65.8% (w/w) carbohydrate, 9.6% (w/w) protein, 1.7% (w/w) lipid, 7.0% (w/w) moisture and 15.9% (w/w) ash. The dried seaweed was easily hydrolyzed under mild conditions (0.5 M sulfuric acid, 20 min.), generating fermentable monosaccharides with a maximum hydrolysis efficiency of 63.21%. Galactose and glucose present in the hydrolyzed were simultaneously fermented by Saccharomyces cerevisiae when the yeast was acclimated to galactose and cultivated in broth containing only galactose. The kinetic parameters of the fermentation of the seaweed hydrolyzed were Y (P⁄S) = 0.48 ± 0.02 g.g, η = 94.1%, representing a 41% increase in bioethanol productivity. Therefore, S. filiformis was a promising renewable resource of polysaccharides easily hydrolyzed, generating a broth rich in fermentable monosaccharides for ethanol production.Keywords: iota-carrageenan, cellulose, galactose, kinetic parameters, fermentation, acclimation, sulfuric acid.Hidrólise ácida otimizada dos polissacarídeos da macroalga Solieria filiformis (Kützing) P.W. Gabrielson para produção de bioetanol RESUMO. As algas marinhas são recursos naturais ricos em polissacarídeos sulfatados e neutros. A espécie de macroalga tropical utilizada neste estudo (Solieria filiformis) apresentou teores de carboidratos de 65,8% (m/m), proteínas de 9,6% (m/m), lipídios de 1,7% (m/m), umidade de 7,0% (m/m) e 15,9 % (m/m) de cinzas. A macroalga seca foi facilmente hidrolisada em condições brandas, na presença de ácido sulfúrico 0,5 M, por 20 min, produzindo monossacarídeos fermentáveis com uma eficiência de hidrólise máxima de 63,21%. A galactose e a glicose presentes no hidrolisado foram fermentadas simultaneamente por Saccharomyces cerevisiae, após aclimatação da levedura cultivada em meio contendo apenas galactose como fonte de carbono. Os parâmetros cinéticos da fermentação do hidrolisado algáceo pela levedura aclimatada a galactose foram Y (P/S) = 0,48 ± 0,02 g.g filiformis se mostrou um recurso renovável promissor como fonte de polissacarídeos facilmente hidrolisados, gerando um meio nutritivo rico em glucose e galactose para a produção de etanol.

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“…Dilute-acid and alkali hydrolysis are typical physicochemical methods to treat raw macroalgal biomass [29,30]. …”

Section: Overview Of Pretreatment Technologies For Macroalgaementioning

confidence: 99%

Prospects for Bioethanol Production from Macroalgae

Chen

Bai

et al. 2015

Tr Ren Energy

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Kappaphycus alvarezii as a source of bioethanol

Cited by 177 publications

References 15 publications

Bioethanol Production from Seaweed Eucheuma cottonii by Neutralization and Detoxification of Acidic Catalyzed Hydrolysate

Bioethanol Production from Seaweed Eucheuma cottonii by Neutralization and Detoxification of Acidic Catalyzed Hydrolysate

<b>Optimized acid hydrolysis of the polysaccharides from the seaweed <i>Solieria filiformis</i> (Kützing) P.W. Gabrielson for bioethanol production

Prospects for Bioethanol Production from Macroalgae

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