Preparation of a chitosan-chlorogenic acid conjugate and its application as edible coating in postharvest preservation of peach fruit

Jiao, Wenxiao; Shu, Chang; Li, Xiangxin; Cao, Jiankang; Fan, Xinguang

doi:10.1016/j.postharvbio.2019.05.003

Cited by 108 publications

(54 citation statements)

References 40 publications

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“…Since the degree of substitution (DS) of the conjugate is a key factor affecting its activity, many recent studies have focused on increasing the DS by optimizing the reaction conditions [54,55,57,58,63]. Some studies have shown that by increasing the ratio of polyphenols to chitosan in the critical range, the polyphenol content in the conjugate can be increased.…”

Section: Free Radical-induced Conjugationmentioning

confidence: 99%

“…Some studies have shown that by increasing the ratio of polyphenols to chitosan in the critical range, the polyphenol content in the conjugate can be increased. However, beyond that range, excessive free polyphenol molecules may inhibit the progress of the reaction, resulting in a decrease in the coupling rate [54,63]. Therefore, although the radical reaction has advantages such as being green and economical, its low derivatization degree is an urgent problem to be solved, and thus other functionalization strategies such as chemical condensation, enzyme-assisted, and electrochemical methods have been gradually explored.…”

Section: Free Radical-induced Conjugationmentioning

confidence: 99%

“…In addition to serving as a protective barrier, the edible chitosan films can be used as a carrier for bioactive compounds to improve food quality. The combination of chitosan and different antimicrobial agents, such as organic acids, plant extracts, antibiotics, etc., can reduce food spoilage of pathogenic microorganisms and extend shelf life [45,63,121].…”

Section: Potential Applicationsmentioning

confidence: 99%

“…The following points are specifically emphasized: It is generally believed that the higher the DS of the chitosan conjugate is, the stronger its antibacterial activity is [114]. However, due to the structure of the chitosan macromolecule and its potential steric hindrance, the coupling rate of chitosan is not high in many cases [33,57,63], which may bring the problem of the insufficient effective concentration of active ingredients in the body. Another very important issue is that macromolecular conjugates are first required to be able to provide quantitative or targeted sustained release of free biologically active drugs in vivo.…”

Section: How Can Chitosan Conjugates Be Properly Designdesigned and Smentioning

confidence: 99%

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Antimicrobial Chitosan Conjugates: Current Synthetic Strategies and Potential Applications

Qin

2020

IJMS

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As a natural polysaccharide, chitosan possesses good biocompatibility, biodegradability and biosafety. Its hydroxyl and amino groups make it an ideal carrier material in the construction of polymer-drug conjugates. In recent years, various synthetic strategies have been used to couple chitosan with active substances to obtain conjugates with diverse structures and unique functions. In particular, chitosan conjugates with antimicrobial activity have shown great application prospects in the fields of medicine, food, and agriculture in recent years. Hence, we will place substantial emphasis on the synthetic approaches for preparing chitosan conjugates and their antimicrobial applications, which are not well summarized. Meanwhile, the challenges, limitations, and prospects of antimicrobial chitosan conjugates are described and discussed.

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Section: Free Radical-induced Conjugationmentioning

confidence: 99%

Section: Free Radical-induced Conjugationmentioning

confidence: 99%

Section: Potential Applicationsmentioning

confidence: 99%

Section: How Can Chitosan Conjugates Be Properly Designdesigned and Smentioning

confidence: 99%

See 2 more Smart Citations

Antimicrobial Chitosan Conjugates: Current Synthetic Strategies and Potential Applications

Qin

2020

IJMS

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“…Chitosan has broad-spectrum antimicrobial properties [11] as well as permselectivity to ethylene, CO 2 and O 2 . This translates into a reduction in the respiration of fruit and might reduce the loss of organic substances [12]. However, chitosan film serves as a poor barrier for water vapor, which limits the application of chitosan in fruit preservation [13].…”

Section: Introductionmentioning

confidence: 99%

Application of Pullulan and Chitosan Multilayer Coatings in Fresh Papayas

2019

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In this work, some multilayer coatings (two-layer, four-layer or six-layer) based on pullulan and chitosan for protecting papayas were prepared by the layer-by-layer technique. The papayas were coated by immersion and stored at 25 °C, 50% relative humidity or up to 14 days. Uncoated and monolayer-coated papayas were used as controls. The pullulan/chitosan coatings decreased the papaya weight loss, softening, color change (b*, ΔE), and pH, retarded the fall of titratable acidity and vitamin C, and maintained respiratory rate and soluble solid contents. Sensory quality evaluation demonstrated that pullulan/chitosan coatings effectively preserved papaya flavor and overall acceptance. In general, the four-layer coatings provided the best fruit preservation. In conclusion, multilayer pullulan/chitosan coatings are efficient in maintaining the post-harvest quality and prolonging the shelf life of fresh papaya.

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