Evaluation of Chemical Composition of Miscanthus × giganteus Raised in Different Climate Regions in Russia

Abstract

Lignocellulosic biomass is of great interest as an alternative energy resource because it offers a range of merits. Miscanthus × giganteus is a lignocellulosic feedstock of special interest, as it combines a high biomass productivity with a low environmental impact, including CO2 emission control. The chemical composition of lignocellulose determines the application potential for efficient industrial processing. Here, we compiled a sample collection of Miscanthus × giganteus that had been cultivated in different climate regions between 2019 and 2021. The chemical composition was quantified by the conventional wet methods. The findings were compared with each other and with the known data. Starting as soon as the first vegetation year, Miscanthus was shown to feature the following chemical composition: 43.2–55.5% cellulose content, 17.1–25.1% acid-insoluble lignin content, 17.9–22.9% pentosan content, 0.90–2.95% ash content, and 0.3–1.2% extractives. The habitat and the surrounding environment were discovered herein to affect the chemical composition of Miscanthus. The stem part of Miscanthus was found to be richer in cellulose than the leaf (48.4–54.9% vs. 47.2–48.9%, respectively), regardless of the planation age and habitat. The obtained findings broaden the investigative geography of the chemical composition of Miscanthus and corroborate the high value of Miscanthus for industrial conversion thereof into cellulosic products worldwide.

Simultaneous Production of Cellulose Nitrates and Bacterial Cellulose from Lignocellulose of Energy Crop

“…In this study, Miscanthus × giganteus was used as the feedstock, having the following chemical compositions: 50.2 wt.% Kürschner cellulose, 19.5 wt.% acid-soluble lignin, 21.2 wt.% pentosans, 1.63 wt.% ash, and 0.5 wt.% extractives [ 53 ]. The quantitative determination methods for the feedstock components were similar to those used for cellulose components ( Section 2.2.1 ), except for the quantitative determination of Kürschner cellulose and extractives.…”

“…The overview of the world literature on alternative cellulose sources has demonstrated that despite the diversity of Miscanthus species and their habitats [ 47 , 48 , 49 , 50 , 51 , 52 , 53 ], as well as their wide applications ranging from paper industry to biosynthesis products [ 54 , 55 , 56 , 57 , 58 , 59 , 60 , 61 ], the information on Miscanthus cellulose as the substrate for chemical functionalization into CN is presently quite limited, except for the authors’ single studies.…”

Biomass yields, reproductive fertility, compositional analysis, and genetic diversity of newly developed triploid giant miscanthus hybrids

“…Compositional analyses of these accessions studied here were within ranges previously reported for M . × giganteus of 32.7%–52.9% for cellulose, 17.1%–33.8% for hemicellulose, and 7.6%–33% for lignin content, though there can be substantial variations due to the environment and harvest time (Gismatulina et al., 2022; Turner et al., 2021; Xu et al., 2020). Although there was some variation in compositional analyses among accessions in this study, variations were generally small, indicating that differences in theoretical ethanol yields are largely attributed to biomass yields rather than composition.…”

Review of Current Prospects for Using Miscanthus-Based Polymers

“…The essential merit of Miscanthus is its high cellulose content ranging from 36 to 55%, according to different data [ 12 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 ]. Moreover, the Miscanthus biomass contains valuable constituents, such as hemicelluloses and lignin ( Figure 2 ).…”

“…Miscanthus refers to cellulosic raw material resources, and its biomass contains about 50% cellulose [ 7 , 45 , 46 , 47 ]. Cellulose is the most valuable component of Miscanthus , and a global trend towards replacing wood cellulose by Miscanthus cellulose in the manufacture of cupboards, disposable tableware, and paper is currently being observed worldwide.…”