Self-standardization of quality of bacterial cellulose produced by Medusomyces gisevii in nutrient media derived from Miscanthus biomass.

Autor: Skiba EА; Institute for Problems of Chemical and Energetic Technologies, Siberian Branch of the Russian Academy of Sciences (IPCET SB RAS), Biysk, 659322 Altai Krai, Russia., Gladysheva EK; Institute for Problems of Chemical and Energetic Technologies, Siberian Branch of the Russian Academy of Sciences (IPCET SB RAS), Biysk, 659322 Altai Krai, Russia., Golubev DS; Institute for Problems of Chemical and Energetic Technologies, Siberian Branch of the Russian Academy of Sciences (IPCET SB RAS), Biysk, 659322 Altai Krai, Russia., Budaeva VV; Institute for Problems of Chemical and Energetic Technologies, Siberian Branch of the Russian Academy of Sciences (IPCET SB RAS), Biysk, 659322 Altai Krai, Russia. Electronic address: budaeva@ipcet.ru., Aleshina LА; Petrozavodsk State University, Petrozavodsk, 185910, Russia., Sakovich GV; Institute for Problems of Chemical and Energetic Technologies, Siberian Branch of the Russian Academy of Sciences (IPCET SB RAS), Biysk, 659322 Altai Krai, Russia.
Jazyk: angličtina
Zdroj: Carbohydrate polymers [Carbohydr Polym] 2021 Jan 15; Vol. 252, pp. 117178. Date of Electronic Publication: 2020 Oct 05.
DOI: 10.1016/j.carbpol.2020.117178
Abstrakt: Bacterial cellulose (BC) was synthesized from biomass of Miscanthus grown in West Siberia. Miscanthus biomass was pretreated at atmospheric pressure with 4 wt.% solutions of HNO 3 and NaOH in one and two stages. The effect of four methods of the pretreatment of the feedstock on BC yield and properties was examined. The resultant pulps were subjected to enzymatic hydrolysis with commercial CelloLux-A and BrewZyme BGX enzymes. Biosynthesis of BC was run under static and non-sterile conditions using Medusomyces gisevii Sa-12. The two-stage pretreatment of Miscanthus biomass gave a 20 % increase in BC production compared to the single-stage pretreatment. The resultant BC exhibited a high crystallinity index (88-93 %) and an extraordinarily high content of allomorph Iα (99-100 %), irrespective of the pretreatment method; therefore, it has been revealed for the first time that the Medusomyces gisevii Sa-12 symbiotic culture is capable of self-standardization against the quality of produced BC.
(Copyright © 2020 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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