Production and characterization of lignin containing nanocellulose from luffa through an acidic deep eutectic solvent treatment and systematic fractionation

Hong, Shu; Song, Yandan; Yang, Yuan; Lian, Hailan; Liimatainen, Henrikki

doi:10.1016/j.indcrop.2019.111913

Cited by 105 publications

(22 citation statements)

References 61 publications

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“…As seen in Figure 1a, the residual lignin (roundish particles that are shown by red arrows) has surrounded the nanofibrils and prompted a configuration different than that of fibrils in CNF samples (Figure 1b). Such lignin distribution was also observed in other studies [33,34]. In theory, while high aspect ratio geometries such as fibrillar or rod-like particles are not ideal in forming tortuosity, spherical shapes may be better suited to block the diffusion [35].…”

Section: Morphology Differences Between Cnf and Lcnfsupporting

confidence: 78%

Paper-Based Oil Barrier Packaging using Lignin-Containing Cellulose Nanofibrils

2020

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Environmental and health concerns are driving the need for new materials in food packaging to replace poly- or perfluorinated compounds, aluminum layers, and petroleum-based polymers. Cellulose nanofibrils (CNF) have been shown by a number of groups to form excellent barrier layers to oxygen and grease. However, the influence of lignin-containing cellulose nanofibrils (LCNF) on film barrier properties has not been well reported. Herein, thin films (16 g/m2) from LCNF and CNF were formed on paper substrates through a filtration technique that should mimic the addition of material at the wet end of a paper machine. Surface, barrier and mechanical attributes of these samples were characterized. The analysis on the surface free energy and water contact angle pointed to the positive role of lignin distribution in inducing a certain degree of water repellency. The observed oxygen transmission rate (OTR) and water vapor permeability (WVP) values of LCNF-coated samples were nearly similar to those with CNF. However, the presence of lignin improved the oil proof performance; these layered designs exhibited an excellent resistance to grease (kit No. 12). The attained papers with LCNF coat were formed into bowl-like containers using metal molds and a facile oven drying protocol to evaluate their resistance to oil penetration over a longer period. The results confirmed the capability of LCNF layer in holding commercially available cooking oils with no evidence of leakage for over five months. Also, an improvement in the tensile strength and elongation at break was observed in the studied papers. Overall, the proposed packaging material possesses viable architecture and can be considered as a fully wood-based alternative for the current fluorocarbon systems.

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Section: Morphology Differences Between Cnf and Lcnfsupporting

confidence: 78%

Paper-Based Oil Barrier Packaging using Lignin-Containing Cellulose Nanofibrils

2020

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“…On the one hand, the yield of EO decreased with decrease in pretreatment time. The reason for this phenomenon was the formation of esters monoester or cross-linked diester between hydroxyl groups of cellulose with oxalic acid, which can prevent the dissolution and hydrolysis of cellulose 39 after the long pretreatment time. On the other hand, the yield was increased when the pretreatment temperature increased from 70 to 84 .…”

Section: Analysis Of Response Surfacementioning

confidence: 99%

Microwave-assisted Natural Deep Eutectic Solvents Pretreatment Followed by Hydrodistillation Coupled with GC-MS for Analysis of Essential Oil from Turmeric (<i>Curcuma longa</i> L.)

Zhang

Jin

et al. 2021

J. Oleo Sci.

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IntroductionEssential oils EO or volatile oils, also known as essences, originate from the secondary metabolism of plants and have complex chemical components 1 . Turmeric Curcuma longa L. belongs to the family Zingiberaceae, is a perennial rhizomatous shrub native to Southern Asia. At present, the cultivation of this species is also widely distributed in some African countries 2 . The turmeric essential oil is widely used in traditional and modern system of medicine due to the presence of several medicinal properties like antibacterial, antifungal, antiviral, antiworm, antiallergic, anti-parasitic, antinociceptive, anti-platelet, antimutagenic and antiarthritic properties etc 3 6 .

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“…After removal of lignin, hemicellulose was removed by soaking of holocellulose (hemicellulose and α-cellulose) into 600 mL of 5% KOH solution for 24 h at room temperature with stirring, then heated at 90 °C /2 h. Obtained cellulose was washed and dried to calculate the percentage of hemicellulose and cellulose. The resulted chemical composition of original Luffa bers was cellulose 60%, hemicelluloses 26.6%, lignin 13.4% (Hong et al 2020).…”

Section: Isolation Of Cellulose From Luffa Bers (Lf)mentioning

confidence: 98%

Preparation and characterization of multifunctional sponge-gourd fibers (Luffa cylindrica)/ hydroxyapatite composites for removal of lead and methylene blue

Oun

Kamal

Farroh

et al. 2021

Preprint

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Cellulose, oxidized-fibers, and oxidized-nanocellulose were isolated from sponge-gourd fibers (Luffa cylindrica). Isolated materials showed different morphology (shape and size), chemical, crystalline properties, and removal efficiency against methylene blue (MB) and lead ions (Pb2+). The cellulosic materials showed high efficiency in removing MB more than Pb2+. So, different luffa forms/hydroxyapatite (HAp) composites were prepared and used as adsorbents for removal of both MB and Pb2+ from aqueous solutions. The effect of sorbent type, contact time, and initial MB and Pb2+ concentrations were studied. HAp was successfully synthesized on the surface of luffa with an average length of 40–56 nm and width of 14–19 nm. Kinetic and adsorption studies of MB and Pb2+ ions were well fitted with the pseudo-second-order model and Langmuir model. The maximum adsorption capacity of MB was 25.2 mg/g, 30.8 mg/g, and 36.2 mg/g for oxidized-fibers/HAp, oxidized-fibers, and cellulose, respectively, and for Pb2+ was 625 mg/g, 714 mg/g, and 714.5 mg/g for oxidized-fibers/HAp, oxidized-nanocellulose/HAp, and cellulose/HAp, respectively. Also, more than 85% of MB (25 mg/L) and 95% of lead (500 mg/L) were removed within the first 5 min. Oxidize-fibers/HAp composite showed effective adsorption with both MB and Pb2+ in a very short time.

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Production and characterization of lignin containing nanocellulose from luffa through an acidic deep eutectic solvent treatment and systematic fractionation

Cited by 105 publications

References 61 publications

Paper-Based Oil Barrier Packaging using Lignin-Containing Cellulose Nanofibrils

Paper-Based Oil Barrier Packaging using Lignin-Containing Cellulose Nanofibrils

Microwave-assisted Natural Deep Eutectic Solvents Pretreatment Followed by Hydrodistillation Coupled with GC-MS for Analysis of Essential Oil from Turmeric (<i>Curcuma longa</i> L.)

Preparation and characterization of multifunctional sponge-gourd fibers (Luffa cylindrica)/ hydroxyapatite composites for removal of lead and methylene blue

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