Grafting Renewable Chemicals to Functionalize Chitosan

Govar, C. Justin; Chen, Tianhong; Liu, Nai-Chi; Harris, Michael T.; Payne, Gregory F.

doi:10.1021/bk-2003-0840.ch019

Cited by 6 publications

(3 citation statements)

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“…6). Similarly, processes for grafting of antimicrobial agents [61][62][63], in situ dyeing [64,[65][66][67][68][69][70][71] as well as synthesis of biocatalytically active hydrogel-based polymers [72][73][74][75] and other functional polymers [76][77][78][79][80] have been developed. This approach has also been used to bond wood chips.…”

Section: Production Of Functional Polymers Through Direct Oxidation Fmentioning

confidence: 99%

“…Direct oxidation approach has also been used to couple hydrophobic enhancing molecules like lauryl gallate, fluorophenols, long chain alkylamines onto lignocelluose materials, resulting in increased hydrophobicity [58][59][60]. Similarly, processes for grafting of antimicrobial agents [61][62][63], in situ dyeing [64,[65][66][67][68][69][70][71] as well as synthesis of biocatalytically active hydrogel-based polymers [72][73][74][75] and other functional polymers [76][77][78][79][80] have been developed. Recently, polymers with strong radical scavenging activity and able to protect against lipoperoxidation were developed by direct polymerizations of flavonoids in the presence of laccase or tyrosinases [81].…”

Section: Production Of Functional Polymers Through Direct Oxidation Fmentioning

confidence: 99%

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Engineering Strategies for Successful Development of Functional Polymers Using Oxidative Enzymes

et al. 2012

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Enzyme application in polymer engineering is rapidly increasing and is set to revolutionize many industries. Given the multidisciplinary nature of this field, it has become clear that successful development of functional polymers entails tapping into advances in bioengineering, molecular biology, genetic engineering, chemical engineering, biochemistry, material science, nanotechnology, etc. This review summarizes the different strategies and reaction conditions that can influence the synthesis or modification of polymers. It is hoped that this review will provide scientists from different backgrounds with information on the different reaction engineering strategies for the successful development of functional polymers using oxidative enzymes.

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Section: Production Of Functional Polymers Through Direct Oxidation Fmentioning

confidence: 99%

Section: Production Of Functional Polymers Through Direct Oxidation Fmentioning

confidence: 99%

Engineering Strategies for Successful Development of Functional Polymers Using Oxidative Enzymes

et al. 2012

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“…Bozic et al (2012) functionalized chitosan with quercetin or tannic acid using the laccase from Trametes versicolor, leading to a biobased product with synergistic antioxidant and antibacterial properties. Tyrosinase enzymes can also effectively graft phenolic compounds onto chitosan through their conversion into reactive o-quinone intermediates, which subsequently undergo nonenzymatic reactions with the nucleophilic amino groups of chitosan (Govar et al 2003;Puskas et al 2009). By using tyrosinase, Vartiainen et al (2008) grafted octyl gallate and dodecyl gallate onto chitosan, resulting in coatings with strong antibacterial activity against S. aureus and L. innocua.…”

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confidence: 99%

Recent Advances on the Development of Antibacterial Polysaccharide-Based Materials

2014

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This chapter aims at presenting a comprehensive overview of the latest advances in the development of antibacterial materials based on chitosan, cellulose, and starch, which being the most abundant polysaccharides have a high potential to be explored in large variety of applications (e.g., food or biomedical fields).Owing to its intrinsic antibacterial and film-forming properties, chitosan can be directly used to create antibacterial materials. Thus, the first part of this chapter focuses mainly on the factors affecting its inherent bioactivity and the strategies potentially used to enhance it, in order to broaden chitosan-based materials applicability. Then the strategies developed to impart antibacterial properties to cellulose and starch, mainly through chemical modification or combination with bioactive natural and synthetic components and polymers as well as with metal and metal oxide nanoparticles, were screened in detail, pointing out their antibacterial profile and prospective applications.

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Green polymer chemistry using nature's catalysts, enzymes

Puskás

Sen

Seo

2009

J. Polym. Sci. A Polym. Chem.

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ABSTRACT:The use of enzymes as catalysts for organic synthesis has become an increasingly attractive alternative to conventional chemical catalysis. Enzymes offer several advantages including high selectivity, ability to operate under mild conditions, catalyst recyclability, and biocompatibility. Although there are many examples in the literature involving enzymes for the synthesis of polymers, our search showed that very little had been done in the area of polymer modification. In this article, we will discuss enzyme catalysis in general and highlight our recent results concerning precision polymer functionalization using enzymatic catalysis-''green polymer chemistry.''

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Grafting Renewable Chemicals to Functionalize Chitosan

Cited by 6 publications

References 0 publications

Engineering Strategies for Successful Development of Functional Polymers Using Oxidative Enzymes

Engineering Strategies for Successful Development of Functional Polymers Using Oxidative Enzymes

Recent Advances on the Development of Antibacterial Polysaccharide-Based Materials

Green polymer chemistry using nature's catalysts, enzymes

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