Abstract
The aim of this work was to develop bioprocesses to produce a high-value microbial product, bacterial cellulose (BC), utilizing the industrial side-stream of Corinthian currants finishing (CFS), with/without the addition of N-sources and cheese whey, and at various process conditions (temperature, pH level, and sugar concentration). For the optimization of BC production, the response surface methodology based on the central composite design was applied. Among the possible retrieved combinations, the most ideal conditions for BC in CFS extracts supplemented with N-source were 28 °C, pH 6.42, and 46.24 g/L concentration of sugars. In a similar manner, the best conditions for BC production in CFS/whey mixtures were pH 6.36, 50.4% whey percentage in the mixture, and 1.7% yeast extract. The textural characteristics of the produced BC, at different times of production and using different drying methods, were studied by scanning electron microscopy, X-ray diffractometry, porosimetry, Fourier-transform infrared spectroscopy, and thermogravimetric/differential thermal analysis, revealing increased porosity of BC compared with delignified cellulosic materials of plant origin, and a level of crystallinity that depended on the BC production time. The proposed methodology can be used to produce foods with potential prebiotic properties, using the highly nutritious CFS and the abundant cheese whey effluent as raw materials.
Funder
Agricultural Cooperatives Union of Aeghion S.A, Greece
Subject
Plant Science,Health Professions (miscellaneous),Health(social science),Microbiology,Food Science
Reference27 articles.
1. Food and Beverages Industry. Facts & Figures 2015,2016
2. White biotechnology: State of the art strategies for the development of biocatalysts for biorefining
3. Ministerial Decision No. 442597, Recognition of Protected Designation of Origin (P.D.O.)https://wipolex.wipo.int/en/legislation/details/8987
4. Commission regulation (EC) No 1549/98 of 17 July 1998 supplementing the Annex to Regulation (EC) No 1107/96 on the registration of geographical indications and designations of origin under the procedure laid down in Article 17 of Council Regulation (EEC) No 2081/92https://eur-lex.europa.eu/eli/reg/1998/1549/1998-07-18
5. Corinthian raisins (Vitis vinifera
L.,
var. Apyrena) antioxidant and sugar content as affected by the drying process: a 3-year study
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