Preparation, Characterization, and Surface Modification of Cellulose Nanocrystal from Lignocellulosic Biomass for Immobilized Lipase

Restiawaty, Elvi; Culsum, Neng Tresna Umi; Nishiyama, Norikazu; Budhi, Yogi Wibisono

doi:10.3390/fib10040033

Cited by 15 publications

(6 citation statements)

References 51 publications

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“… 58 Restiawaty et al also show that surface-modified cellulose nanocrystals can be used to immobilize lipase with a decrease in the hydrolysis of canola oil by up to 30%. 59 Immobilization or inhibition of lipases has been a strategy used to reduce lipid digestion for the purpose of weight management. Herein, we found that functionalizing CNFs with HPBCD (FCNFs) significantly reduced the TG hydrolysis process.…”

Section: Resultsmentioning

confidence: 99%

“…Hansen observed a 12–34.8% inhibition of lipase upon addition of 12.5 g/L dietary fiber in human duodenal juice . Restiawaty et al also show that surface-modified cellulose nanocrystals can be used to immobilize lipase with a decrease in the hydrolysis of canola oil by up to 30% . Immobilization or inhibition of lipases has been a strategy used to reduce lipid digestion for the purpose of weight management.…”

Section: Resultsmentioning

confidence: 99%

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Cellulose Nanofiber Platform for Pesticide Sequestration in the Gastrointestinal Tract

Setyawati

DeLoid

et al. 2023

ACS Omega

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Exploitation of nature-derived materials is an important approach to promote environmental sustainability. Among these materials, cellulose is of particular interest due to its abundance and relative ease of access. As a food ingredient, cellulose nanofibers (CNFs) have found interesting applications as emulsifiers and modulators of lipid digestion and absorption. In this report, we show that CNFs can also be modified to modulate the bioavailability of toxins, such as pesticides, in the gastrointestinal tract (GIT) by forming inclusion complexes and promoting interaction with surface hydroxyl groups. CNFs were successfully functionalized with (2-hydroxypropyl)-β-cyclodextrin (HPBCD) using citric acid as a crosslinker via esterification. Functionally, the potential for pristine and functionalized CNFs (FCNFs) to interact with a model pesticide, boscalid, was tested. Based on direct interaction studies, adsorption of boscalid saturated at around 3.09% on CNFs and at 12.62% on FCNFs. Using an in vitro GIT simulation platform, the adsorption of boscalid on CNFs/FCNFs was also studied. The presence of a high-fat food model was found to have a positive effect in binding boscalid in a simulated intestinal fluid environment. In addition, FCNFs were found to have a greater effect in retarding triglyceride digestion than CNFs (61% vs 30.6%). Overall, FCNFs were demonstrated to evoke synergistic effects of reducing fat absorption and pesticide bioavailability through inclusion complex formation and the additional binding of the pesticide onto surface hydroxyl groups on HPBCD. By adopting food-compatible materials and processes for production, FCNFs have the potential to be developed into a functional food ingredient for modulating food digestion and the uptake of toxins.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Cellulose Nanofiber Platform for Pesticide Sequestration in the Gastrointestinal Tract

Setyawati

DeLoid

et al. 2023

ACS Omega

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“…CNCs are cellulose-based nanomaterial with high crystallinity, between 54-88% (Moon et al, 2011). CNCs are renewable materials that can be made from various sources containing cellulose, such as wood (Leung et al, 2011), flax (Leung et al, 2011), empty palm oil bunch (Harahap et al, 2023;Marpongahtun et al, 2023;Budhi et al, 2018;Wibowo et al, 2018), and other lignocellulosic materials (Restiawaty et al, 2022). Even CNCs can be produced from waste materials containing cellulose, such as paper and denim waste (Culsum et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Novel Multiphase CO2 Photocatalysis System Using N-TiO2/CNCs and CO2 Nanobubble

Madani,

Wibowo,

Sasongko

et al. 2024

IJTech

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In this study, a novel CO2 photocatalysis system was developed by modifying TiO2 as a photocatalyst and introducing CO2 nanobubble to the system. TiO2 photocatalyst is modified by adding CNCs as support to increase the surface area and adding nitrogen doping to reduce the band gap and minimize electron-hole recombination. CO2 nanobubbles are introduced to increase the surface area between the CO2 gas and liquid phases to reduce mass transfer limitations. Thus, the amount of CO2 in the liquid phase increases. Nanobubbles have been successfully generated by the hydrodynamic cavitation method, which produces bubbles with two size clusters, namely 200-400 nm, which belong to nanobubbles, and 2-10 um, which belong to microbubbles. The TiO2 has an anatase phase and crystallite size of 20.90 nm for TiO2/CNCs and 19.20 nm for N-TiO2/CNCs. The activity test without nitrogen doping produced a methanol product of 0.77 mmol/g catalyst, which shows that this multiphase CO2 photocatalytic system is feasible for CO2 photocatalytic reactions. The addition of nitrogen doping succeeded in reducing the band gap from 3.20 eV to 3.10 eV and increasing the methanol yield. The photocatalysis activity test with N-doped TiO2/CNCs resulted in a higher methanol yield, which is 1.13 mmol/g catalyst under UV-C irradiation for 6 hours.

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“…350 °C), and ribbon, rectangle or elliptical morphologies. 24,26,27 Cellulose from SUP cups could be used to reinforce the mechanical properties of other polymers, 28 whereas LDPE can be reprocessed during extrusion with virgin LDPE to obtain new products. 29 Thus, to reuse or recycle the cellulose fiber into a raw material to produce new materials and products can be of great interest.…”

Section: Introductionmentioning

confidence: 99%

“…The required properties to obtain CNC include >50% crystallinity, free from oxidative groups, high thermal stability ( ca . 350 °C), and ribbon, rectangle or elliptical morphologies 24,26,27 …”

Section: Introductionmentioning

confidence: 99%

CNCs extraction from single‐use cups: effects of grafting it onto MMA monomer

Juárez‐Méndez

Palma‐Ramírez

Brachetti-Sibaja

et al. 2023

J of Chemical Tech & Biotech

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BACKGROUND: The difficulty of separating fiber from polyolefin coatings of single-use plastic (SUP) cups for cold (carbonated) or hot (coffee) drinks, has led us to investigate a recycling method to obtain new high-performance materials. The present work relates to valorization of ICEE S.A. de C.V. cups into crystalline nanocellulose (CNC), while studying the effects on the structural, thermal, morphological and particle size properties in dependence of the acid hydrolysis concentration (40 and 64% v/v) employing sulfuric acid to remove amorphous cellulose.RESULTS: On the basis of results, optimal CNC was found at 64% v/v concentration obtaining ribbon-like morphologies rich in cellulose types I⊍ (27%) and II (45.1%) of triclinic and monoclinic structures, respectively, high crystallinity percentage (91%) and nanosize scale (26.70 nm). CNC was successfully grafted through the C 2 in cellulose onto the methyl methacrylate (MMA) monomer to obtain PMMA-g-CNC, considering different concentrations (5, 10, 20 and 30 wt%) of CNC. A reduction of crystallinity % was found when CNC is grafted onto MMA owing to the amorphous nature of the poly(methyl methacrylate) (PMMA). However, this is not a limitation.CONCLUSIONS: PMMA-g-CNC samples displayed high thermal stability (345 °C) and nanometric scale (165-260 nm), which have potential to be studied as reinforcement agents for incompatible polymers such as PMMA and poly(urethane) (PU) through Interpenetrating Polymer Networks. Preliminary mechanical studies indicated that PMMA-g-CNC systems are able to reinforce the tensile properties becoming the PMMA/PU into ductile materials. Specially, the MMA 90 CNC 10 system improved the strain four-fold compared to the pure PMMA/PU IPN.

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Preparation, Characterization, and Surface Modification of Cellulose Nanocrystal from Lignocellulosic Biomass for Immobilized Lipase

Cited by 15 publications

References 51 publications

Cellulose Nanofiber Platform for Pesticide Sequestration in the Gastrointestinal Tract

Cellulose Nanofiber Platform for Pesticide Sequestration in the Gastrointestinal Tract

Novel Multiphase CO2 Photocatalysis System Using N-TiO2/CNCs and CO2 Nanobubble

CNCs extraction from single‐use cups: effects of grafting it onto MMA monomer

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