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Article

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Title

Operating parameters in open culture fermentation of sugars

Authors

[ 1 ] Instytut Inżynierii Środowiska i Instalacji Budowlanych, Wydział Inżynierii Środowiska i Energetyki, Politechnika Poznańska | [ P ] employee

Scientific discipline (Law 2.0)

[2.10] Environmental engineering, mining and energy

Year of publication

2021

Published in

Biosystems Engineering

Journal year: 2021 | Journal volume: vol. 210

Article type

scientific article

Publication language

english

Keywords
EN
  • glucose
  • xylose
  • galactose
  • maize silage
  • open culture fermentation
  • carboxylic acids
Abstract

EN Open culture fermentation (OCF) is a promising technology for converting different organic waste into carboxylic acids (CAs) and alcohols in the context of biorefinery. This study investigated OCF to enhance the production of CAs and alcohols from three different monosaccharides: glucose, xylose, galactose and a mixture of two sugars: glucose with galactose. In addition, more complex substrates, such as maize silage and strawberry wastewater were used as well. The investigated variables included following operational parameters: substrate type, pH, retention time and sugar loading. Promising results were obtained for complex substrates. The highest CAs yield was noticed for raw maize silage at pH 8 and RT 1 day. For monosaccharides the most efficient process was the cofermentation (glucose/galactose) (substrate loading 4 g L-1). CAs composition varied with the changing pH and type of sugar and substrate: in neutral conditions, acetic acid; in acidic conditions, acetic and butyric acids; and in alkaline conditions butyric acid were dominant, respectively. Statistical inference showed optimal conditions for the production of defined compounds from a specific monosaccharide, which could be helpful for designing experiments aiming at particular CA.

Date of online publication

26.08.2021

Pages (from - to)

78 - 90

DOI

10.1016/j.biosystemseng.2021.08.002

URL

https://www.sciencedirect.com/science/article/pii/S1537511021001847

Ministry points / journal

100

Ministry points / journal in years 2017-2021

100

Impact Factor

5,002

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