Effect of pH in the bioethanol production from cheese whey using the yeast Kluyveromyces marxianus

β-Galactosidases from Kluyveromyces lactis and Kluyveromyces marxianus isolated from artisanal ewes’ milk cheeses, were used to transgalactosylate lactose from cheese whey permeate (WP). The content of galactooligosaccharides (GOS) obtained by transgalactosylation was comparable with that formed using pure lactose as substrate. In order to obtain a mixture with higher prebiotic oligosaccharide content, isomerisation of the transgalactosylated WP was carried out using sodium aluminate as catalyst. The transgalactosylated mixtures at 6 h of reaction contained amounts of prebiotic carbohydrates (tagatose, lactulose, GOS and oligosaccharides derived from lactulose, OsLu) close to 50 g/100 g of total carbohydrates for all the strains tested, corresponding to 322 g prebiotics/kg whey permeate. Thus, the suitability of this methodology to produce mixtures of dietary non-digestible carbohydrates with prebiotic properties from WP has been demonstrated, which is interesting for the food industry since it increases the value and the applicability of this by-product from cheese manufacture.

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Bioethanol production by newly isolated halotolerant Kluyveromyces marxianus strains

Environmental Progress & Sustainable Energy ◽

10.1002/ep.12935 ◽

2018 ◽

Vol 38 (2) ◽

pp. 542-547 ◽

Cited By ~ 1

Author(s):

Sevgi Ertuğrul Karatay ◽

Ekin Demiray ◽

Gönül Dönmez

Keyword(s):

Kluyveromyces Marxianus ◽

Bioethanol Production

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Bioethanol Production from Azolla filiculoides by Saccharomyces cerevisiae, Pichia stipitis, Candida lusitaniae, and Kluyveromyces marxianus

Applied Biochemistry and Biotechnology ◽

10.1007/s12010-020-03437-0 ◽

2020 ◽

Author(s):

Mariam H. Chupaza ◽

Yu-Rim Park ◽

So Hee Kim ◽

Ji Won Yang ◽

Gwi-Teak Jeong ◽

...

Keyword(s):

Saccharomyces Cerevisiae ◽

Kluyveromyces Marxianus ◽

Pichia Stipitis ◽

Bioethanol Production ◽

Azolla Filiculoides ◽

Candida Lusitaniae

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Bioethanol production from woody stem Prosopis juliflora using thermo tolerant yeast Kluyveromyces marxianus and its kinetics studies

Bioresource Technology ◽

10.1016/j.biortech.2019.122060 ◽

2019 ◽

Vol 293 ◽

pp. 122060 ◽

Cited By ~ 9

Author(s):

S. Sivarathnakumar ◽

J. Jayamuthunagai ◽

G. Baskar ◽

R. Praveenkumar ◽

I. Aberna Ebenezer Selvakumari ◽

...

Keyword(s):

Kluyveromyces Marxianus ◽

Prosopis Juliflora ◽

Bioethanol Production ◽

Kinetics Studies

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Influence of Lactose Concentration in Bioethanol Production from Cheese Whey

Acta Scientiarum Technology ◽

10.4025/actascitechnol.v39i5.29518 ◽

2017 ◽

Vol 39 (5) ◽

pp. 533

Author(s):

Cleidiane Samara Murari ◽

Débora Cristina Moraes Niz da Silva ◽

Bruna Lima da Silva ◽

Vanildo Luiz Del Bianchi

Keyword(s):

Alcoholic Fermentation ◽

Cheese Whey ◽

Ethanol Yield ◽

Oxygen Demand ◽

Bioethanol Production ◽

Organic Substances ◽

Promising Alternative ◽

Renewable Source ◽

Initial Concentration ◽

Lactose Concentration

The present study aimed the utilization of the cheese whey as substrate for ethanol production by Kluyveromyces marxianus. Was studied the effect of the initial concentration of cheese whey (M1 57,6 g L-1; M2 45,6 g L-1; M3 32,5 g L-1 e M4 18,8 g L-1) on the alcoholic fermentation. After sterilization, the medium were incubated at 30ºC for 48 hours, performing analysis of lactose, proteins, ethanol, cell growth and chemical oxygen demand. According to the results, the medium M1 (the highest concentration) showed a higher production and productivity of ethanol 16.9 g L-1 and 1.26 g L.h-1, respectively, and also obtained the highest production and productivity of cell of 5.8 g L-1 and 0.40 g L.h-1, respectively. However, in terms of ethanol yield, the most satisfactory result was obtained with the M3 medium with 82.30% in 12 hours of fermentation. The organic substances content has been reduced in relation to COD in the medium M4 in 82.28%, representing a promising alternative for valorization of cheese whey as an effective alternative to obtain a renewable source of biofuel.

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