lignin

cellulose

Justification not yet generated — showing supporting facts

• Farias et al. demonstrated that plasma therapy using air or pure oxygen removes the amorphous lignin layer on the surface of coir fibers. This process decreases the lignin-to-cellulose ratio, resulting in improved mechanical strength of the fibers.
• Hemicellulose functions in plant cell walls by binding cellulose with lignin to provide structural rigidity, while also imparting flexibility and porosity.
• Lignin and cellulose possess UV-blocking capacity, which is useful in light management due to their ability to scatter and absorb light (ref. 256).
• 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.
• Bio-coatings and adhesives are typically hydrophobic materials that utilize lignin more extensively than 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).
• V. M. Serrano-Martínez, H. Pérez-Aguilar, M. P. Carbonell-Blasco, F. Arán-Ais, and E. Orgilés-Calpena developed a steam explosion-based method for extracting cellulose and lignin from rice straw waste, as published in Applied Sciences in 2024.
• 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.
• Various sustainable insulating materials have been documented with specific thermal conductivities and features: Aerogel (Cellulose, Mg(OH)2) has a conductivity of 56–81 mW m−1 K−1 and is flame retardant; Aerogel (Cellulose) has a conductivity of 25.5 mW m−1 K−1 and is low density/high strength; High porosity wood (Cellulose) has a conductivity of 38 mW m−1 K−1 and is lightweight/noise reducing; Bamboo particle boards (Lignin, glue) have a conductivity of 101–201 mW m−1 K−1 and hygrothermal properties; Aerogel (Silica, lignin, ethylene glycol polymer) has a conductivity of 40 mW m−1 K−1 and is fire resistant/superhydrophobic; Aerogel (Silica) has a conductivity of 19–23 mW m−1 K−1 and is acoustic insulating; Aerogel (Konjac glucomannan, silica) has a conductivity of 21 mW m−1 K−1 and is ultralight/high strength/hydrophobic; Aerogel (Cellulose nanowhisker) has a conductivity of 45 mW m−1 K−1 and is flexible/flame retardant/high strength; Aerogel (Cellulose, PVA) has a conductivity of 31–42 mW m−1 K−1 and is ultralow density/high porosity/superhydrophobic; Aerogel (Cellulose, graphene confined-zirconium phosphate nanosheets) has a conductivity of 18 mW m−1 K−1 and is high strength/flame retardant; Aerogel (Bacterial cellulose) has a conductivity of 13 mW m−1 K−1 and is flexible; Foam (Wood fiber, phytic acid, polyethyleneimine) has a conductivity of 33.6–40 mW m−1 K−1 and is tough/flame retardant/self-extinguishing.

hemicellulose

Justification not yet generated — showing supporting facts

• 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.
• Barana et al. (2016) published 'Biorefinery Process for the Simultaneous Recovery of Lignin, Hemicelluloses, Cellulose Nanocrystals and Silica from Rice Husk and Arundo Donax' in Industrial Crops and Products, describing a method to extract multiple components from agricultural residues.
• 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.
• Sun, Jing, Fowler, Wu, and Rajaratnam (2011) performed structural characterization and isolation of lignin and hemicelluloses from barley straw.
• 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).
• Liu et al. developed a method to extract pure lignin from Tobacco stalks using a hydrothermal process with phosphotungstic acid to selectively remove hemicellulose. The hydrothermal process occurs at 170 °C for 1 hour, while the pretreatment with 1% (w/v) phosphotungstic acid occurs at 130 °C for 1 hour. Following these steps, an alkali treatment with 14% NaOH and 0.5% Anthraquinone is performed to extract lignin through black liquor.
• 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).
• Sun, Sun, Fowler, and Baird (2005) extracted and characterized original lignin and hemicelluloses from wheat straw.
• 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.

hemp

Hemp is related to lignin because lignin is a non-cellulosic component that must be removed from hemp fibers during processing procedures like steam explosion, as described in [1]. — 1 supporting fact

lignocellulosic biomass

Justification not yet generated — showing supporting facts

• 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.