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• Hemicellulose functions in plant cell walls by binding cellulose with lignin to provide structural rigidity, while also imparting flexibility and porosity.
• The study 'Recent breakthroughs in the valorization of lignocellulosic biomass' examines environmental crises in construction, advocates for sustainable material alternatives like cellulose, hemicellulose, lignin, silica, bamboo, and cork, and details technologies for valorizing lignocellulosic biomass (LCB) through extraction and purification.
• Hemp hurds contain 18% to 27% hemicellulose and pectin, 21% to 28% lignin, 40% to 48% cellulose, 2.2% extractives, and 1.4% ash content, making them a viable option for use as a polymer reinforcement agent.
• Lignocellulosic biomass contains several key components, including cellulose, silica, lignin, and hemicellulose.
• Natural fibers are composed of either polysaccharides, such as cellulose, hemicellulose, and lignin, or proteins, such as fibroin and collagen.
• Mazumder and Zhang (2023) investigate the interaction between cellulose, hemicellulose, and lignin in the secondary cell wall of coconut endocarp in the journal Biomimetics.
• Cellulose and silica are the most frequently observed materials used for thermal insulation, with additional research available on the use of hemicellulose and lignin.
• Guo, Shen, Xiao, and Zhao (2011) conducted an experimental study on biomass pyrolysis focusing on the three major components: hemicellulose, cellulose, and lignin.
• Hemicellulose has an amorphous structure due to its random branching, which results in lower mechanical strength and chemical resistance compared to cellulose.
• Lignin, cellulose, and hemicellulose are components of food fibers that absorb water and bind harmful substances for elimination through feces.
• Hemp bast fibers are composed of 70% to 75% cellulose, 15% to 20% hemicellulose, 3% to 5% lignin, 0.8% pectin, 2% to 6% extractives, and 1% to 2% ash content, as reported by Manaia et al. (2019), Möller and Popescu (2009), and Zheljazkov et al. (2023).
• Rastogi et al. developed an enzymatic-based technique for valorizing lignocellulosic biomass into lignin-free polysaccharides using sugarcane bagasse and corn cob as feedstock. The procedure involves: (1) alkali treatment with 2% NaOH for delignification, (2) xylanases enzyme treatment extracted from Aspergillus tubingensis strains, (3) substrate loading at 2% (w/v), (4) enzyme loading at 100–500 U g−1, and (5) incubation at 40 °C, 140 rpm, for 72 hours. The saccharification yield was 81.4%, with greater saccharification observed in the hemicellulose fraction than the cellulose fraction.
• Potassium uptake in industrial hemp increases with plant maturity, with the highest uptake occurring during the development stage of bast fibers, which causes significant increases in cellulose and hemicellulose content.
• The annual dry biomass production and composition of various crops are as follows: Rice (905 million tons, 37.0% cellulose, 16.5% hemicellulose, 13.6% lignin, 19.8% ash), Wheat (62 million tons, 40.2% cellulose, 38.8% hemicellulose, 17.0% lignin, 2.3% ash), Maize (2724 million tons, 42.7% cellulose, 23.2% hemicellulose, 17.5% lignin, 6.8% ash), Sugarcane (1048 million tons, 41.1% cellulose, 22.7% hemicellulose, 31.4% lignin, 2.4% ash), Barley (23.46 million tons, 37.5% cellulose, 37.1% hemicellulose, 15.8% lignin, 4.2% ash), and Soybeans (60.28 million tons, 36.4% cellulose, 14.3% hemicellulose, 18.2% lignin, 4.2% ash).
• The cellulose concentration of hemp bast fibers is higher at the center of the stalk than at the top or bottom, while lignin concentration decreases from the bottom to the top of the stalk, and hemicellulose content increases from the bottom to the top, according to Li et al. (2013).
• Future research on lignocellulosic biomass (LCB) should focus on the total utilization of biomass, including hemicellulose, bio-based silica, and pectin, rather than focusing primarily on cellulose and lignin.
• Figure 2 in the source text provides an illustrative discussion regarding the structure, properties, and applications of cellulose, hemicellulose, lignin, and silica.
• Light inhibits cell wall deposition by affecting the accumulation of cellulose, hemicellulose, and pectin, which alters cell wall plasticity, growth, and mechanical properties in shoot tissues, while increasing cell wall thickness and cellulose content, according to Brüggenwirth and Knoche (2017) and Xu et al. (2024b).