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Biotechnological Transformation of Miscanthus x giganteus: Technological and Environmental Aspects Full article

Journal

Bioresource Technology
ISSN: 0960-8524 , E-ISSN: 1873-2976

Output data

Year: 2026, Volume: 439, Article number : 133374, Pages count : 10 DOI: 10.1016/j.biortech.2025.133374

Tags

Miscanthus giganteus; Nitric acid; Bacterial nanocellulose; Bioethanol; Lactic acid; Complete cycle; Yield; Sustainability factor; Marginality; Bioeconomy

Authors

Skiba Ekaterina A. ¹ , Shavyrkina Nadezhda A. ^1,2 , Budaeva Vera V. ¹ , Ovchinnikova Elena V. ³ , Mironova Galina F. ¹ , Gladysheva Evgenia K. ¹ , Zenkova Anastasia A ¹ , Kashcheyeva Ekaterina I. ¹ , Zolotukhin Vladimir N. ¹ , Hong Feng F. ^4,5 , Sakovich Gennady V. ¹

Affiliations

1	Bioconversion Laboratory, Institute for Problems of Chemical and Energetic Technologies, Siberian Branch of the Russian Academy of Sciences (IPCET SB RAS), Biysk, 659322, Russia
2	Department of Biotechnology, Biysk Technological Institute, Polzunov Altai State Technical University, Biysk 659305, Russia
3	Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences (BIC SB RAS), Novosibirsk 630090, Russia.
4	State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 201620, China; College of Biological Science and Medical Engineering, Donghua University, No. 2999 North Ren Min Road, Shanghai 201620, China.
5	College of Biological Science and Medical Engineering, Donghua University, No. 2999 North Ren Min Road, Shanghai 201620, China

Miscanthus is recognized as a priority feedstock for sustainable bioeconomy. However, the technological and environmental aspects of biotechnological transformation of Miscanthus remain understudied. In this work, a complete cycle of transformation of Miscanthus into bacterial nanocellulose, bioethanol and lactic acid was carried out, and the yields of the bio-based products from 1 ton of the feedstock and sustainability factors of production were estimated for the first time. Miscanthus giganteus from the Russian selection (the Kamis variety) was used as the feedstock. The complete cycle of biotechnological transformation of Miscanthus involved pretreatment with dilute solutions of nitric acid and/or sodium hydroxide at atmospheric pressure, followed by enzymatic hydrolysis of the resultant substrates (4 substrates, 4 initial concentrations) and subsequent fermentation of the said bio-based products on Miscanthus-derived nutrient media. The one-stage pretreatment with a dilute nitric acid solution, which allows a 12–40 % increase in the yield compared to the other pretreatments, was found to be a priority one for all the three bioproducts. It was found that 3.550 tons of bacterial nanocellulose or 0.156 tons of bioethanol, or 0.145 tons of lactic acid could be obtained from 1 ton of Miscanthus giganteus. The sustainability factor was shown to be well below 1.0 (ranging from 0.04 to 0.48) for all bioproducts, meeting the requirements of bioeconomy. The production of bacterial nanocellulose is the most promising in terms of the yield and pricing.

Skiba E.A. , Shavyrkina N.A. , Budaeva V.V. , Ovchinnikova E.V. , Mironova G.F. , Gladysheva E.K. , Zenkova A.A. , Kashcheyeva E.I. , Zolotukhin V.N. , Hong F.F. , Sakovich G.V.
Biotechnological Transformation of Miscanthus x giganteus: Technological and Environmental Aspects
Bioresource Technology. 2026. V.439. 133374 :1-10. DOI: 10.1016/j.biortech.2025.133374 OpenAlex

Submitted:	Jun 17, 2025
Accepted:	Sep 21, 2025
Published online:	Sep 23, 2025
Published print:	Jan 1, 2026

OpenAlex:

W4414480478

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