Production of nanocellulose by enzymatic hydrolysis: Trends and challenges

Ribeiro, R. S. A.; Pohlmann, Bruno C.; Calado, Verônica; Bojorge, Ninoska; Pereira, Nei

doi:10.1002/elsc.201800158

Cited by 176 publications

(98 citation statements)

References 57 publications

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“…It is not LCNFs isolation alike, NCC was obtained from cellulose continued with certain hydrolysis processes, including enzymatic hydrolysis, ionic liquid solvolysis, acid hydrolysis, or 2,2,6,6-tetramethylpiperidine 1-oxyl (TEMPO) oxidation [10,39,49,52]. As an important pretreatment, pulping and bleaching are also used to reduce cementing agents (hemicellulose, lignin, and amorphous lignin), and post-treatment process that includes ultrasonication and filtration is also harnessed to produce purified NCC.…”

Section: Nanocrystalline Cellulosementioning

confidence: 99%

Research mapping of Indonesia nano-lignocellulose fiber studies and its potential for industrial application

et al. 2020

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Nano-lignocellulose fibers (NLCFs) studies have been undertaken intensively in Indonesia because of its extraordinary properties of the nanofibers for various applications. The Government of Indonesia has also supported the development of the studies into industrial application. However, the studies about the nanofibers were still limited thereby creating barriers to the implementation of the studies into industrial application. Based on this study, NLCFs comprised lignocellulose nanofibers, bacterial nanocellulose, nanocrystalline cellulose, and nanofibrillated cellulose. From this study, empty fruit bunch of oil palm became the most studied natural fiber for NLCFs isolation, followed with other sources, such as bacteria, cassava, bamboo, and pineapple. From the Google Earth and ArcGis mapping, NLCFs studies were mostly conducted in Java Island over other Indonesia islands. The phenomenon was due to the availability of nanofibersproducing machines and its instrumentations. There has been yet no specific regulation supporting the development of NLCF studies, but there are some ministerial roadmaps and plans created to support the studies. Yet, NLCF studies have been not only concerned on its isolation and characterization but also the studies have been concentrated for exploring the NLCF potential for industrial application purposes, such as: paper making, pharmaceutics, food and packaging, medicine, and bio-absorbent.

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Section: Nanocrystalline Cellulosementioning

confidence: 99%

Research mapping of Indonesia nano-lignocellulose fiber studies and its potential for industrial application

et al. 2020

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“…Cellulose nanofibers can be extracted from different natural sources [109] (wood or non-woody plants [110]), by mechanical treatment [111], acid hydrolysis (the most-used method) [112], or a combination of the two [113]. Acid hydrolysis can be assisted by ultrasonic treatment (sonication) [114,115] and enzymatic hydrolysis [116]. Acid hydrolysis is an easy and fast method to produce nanocellulose.…”

Section: Nanocellulosementioning

confidence: 99%

Vegetable Additives in Food Packaging Polymeric Materials

Munteanu

Vasile

2019

Polymers

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Plants are the most abundant bioresources, providing valuable materials that can be used as additives in polymeric materials, such as lignocellulosic fibers, nano-cellulose, or lignin, as well as plant extracts containing bioactive phenolic and flavonoid compounds used in the healthcare, pharmaceutical, cosmetic, and nutraceutical industries. The incorporation of additives into polymeric materials improves their properties to make them suitable for multiple applications. Efforts are made to incorporate into the raw polymers various natural biobased and biodegradable additives with a low environmental fingerprint, such as by-products, biomass, plant extracts, etc. In this review we will illustrate in the first part recent examples of lignocellulosic materials, lignin, and nano-cellulose as reinforcements or fillers in various polymer matrices and in the second part various applications of plant extracts as active ingredients in food packaging materials based on polysaccharide matrices (chitosan/starch/alginate).In this review various recent applications of plant-based additives (lignocellulosic fibers/nano-cellulose as well as bioactive plant extracts) as reinforcements and active ingredients in food packaging materials are illustrated. Natural polysaccharide biopolymers (such as chitosan/starch/alginate) are nontoxic, biodegradable, biocompatible, and largely used in food packaging: Chitosan is known for its broad antimicrobial activity and its excellent film-forming properties; alginates have good film-forming properties, retain moisture, reduce microbial counts, and retard oxidative off-flavors; and starch is also particularly important for its cheap price and its frequency in nature. For these reasons, this review will present applications of plant extracts as active ingredients in natural polysaccharide biopolymers: chitosan/starch/alginate. Classification of Natural Biodegradable Polymers and AdditivesNatural biodegradable polymers and additives are polymers formed naturally by the living organisms by enzyme-catalyzed reactions and reactions of chain growth from monomers which are formed inside the cells by complex metabolic processes [5].Natural additives can be high molecular weight (natural polymers), such as proteins (collagen, silk, and keratin), carbohydrates (starch and glycogen), lignin, cellulose, high molecular weight phenolics (tannins and derivatives), and low molecular weight active substances, such as cold-pressed oils, essential oils (organic volatile compounds, generally of low molecular weight,

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“…Despite the numerous works reviewing NC production and their multiple applications [ 6 , 7 ], the enzymatic route is rarely approached. Ribeiro and co-workers [ 13 ] have recently reviewed the enzymatic pathway for NC production, focusing on the characterization methods and the catalytic mechanism. On the other hand, Pirich et al [ 14 ] recently published a review dedicated to enzyme-based strategies to produce nanocellulose.…”

Section: Introductionmentioning

confidence: 99%

Nanocellulose Production: Exploring the Enzymatic Route and Residues of Pulp and Paper Industry

et al. 2020

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Increasing environmental and sustainability concerns, caused by current population growth, has promoted a raising utilization of renewable bio-resources for the production of materials and energy. Recently, nanocellulose (NC) has been receiving great attention due to its many attractive features such as non-toxic nature, biocompatibility, and biodegradability, associated with its mechanical properties and those related to its nanoscale, emerging as a promising material in many sectors, namely packaging, regenerative medicine, and electronics, among others. Nanofibers and nanocrystals, derived from cellulose sources, have been mainly produced by mechanical and chemical treatments; however, the use of cellulases to obtain NC attracted much attention due to their environmentally friendly character. This review presents an overview of general concepts in NC production. Especial emphasis is given to enzymatic hydrolysis processes using cellulases and the utilization of pulp and paper industry residues. Integrated process for the production of NC and other high-value products through enzymatic hydrolysis is also approached. Major challenges found in this context are discussed along with its properties, potential application, and future perspectives of the use of enzymatic hydrolysis as a pretreatment in the scale-up of NC production.

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Production of nanocellulose by enzymatic hydrolysis: Trends and challenges

Cited by 176 publications

References 57 publications

Research mapping of Indonesia nano-lignocellulose fiber studies and its potential for industrial application

Research mapping of Indonesia nano-lignocellulose fiber studies and its potential for industrial application

Vegetable Additives in Food Packaging Polymeric Materials

Nanocellulose Production: Exploring the Enzymatic Route and Residues of Pulp and Paper Industry

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