Potential influence of compounds released in degradation of phytates on the course of alcoholic fermentation of high gravity mashes – simulation with analogs of these compounds

• Autorzy: Mikulski D. , Rolbiecka A. J. , Kłosowski G. R.

Identyfikatory

DOI

10.1515/pjct-2017-0044

• Języki publikacji: EN

Abstrakty

EN

Aim of the study was to evaluate the effect of supplementation of high gravity media with mineral compounds and myo-inositol, at concentration which would be obtained as a result of degradation of phytates present in raw material during alcoholic fermentation. The process of alcoholic fermentation was conducted under laboratory conditions in a 72 h system at 37°C with the use of S. cerevisiae D-2 strain. Calcium chloride proved to be the most effective of all supplements tested. Final ethanol concentration increased by 1.2% v v⁻¹  and the yield of process increased by ca. 7 dm⁻³  ethanol 100 kg⁻¹  of starch in comparison with control. Selective supplementation with KH₂ PO₄,  ZnSO₄  and MgSO₄  also increased the ethanol concentration, but the effect was accompanied by a deterioration in composition of volatile products. The hydrolysis of phytate complexes with microbial phytases can be an alternative solution to supplementation of HG mashes presented in this work.

Słowa kluczowe

EN

high gravity alcoholic fermentation; mineral compounds; inositol

• Wydawca: West Pomeranian University of Technology. Publishing House
• Czasopismo: Polish Journal of Chemical Technology
• Rocznik: 2017
• Tom: Vol. 19, nr 3
• Strony: 27--34
• Opis fizyczny: Bibliogr. 30 poz., rys., tab.

Twórcy

autor

Mikulski D.

• Kazimierz Wielki University, Department of Biotechnology, ul. Księcia Józefa Poniatowskiego 12, 85-671 Bydgoszcz, Poland

autor

Rolbiecka A. J.

• Kazimierz Wielki University, Department of Biotechnology, ul. Księcia Józefa Poniatowskiego 12, 85-671 Bydgoszcz, Poland

autor

Kłosowski G. R.

• Kazimierz Wielki University, Department of Biotechnology, ul. Księcia Józefa Poniatowskiego 12, 85-671 Bydgoszcz, Poland

Bibliografia

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Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).