Synthesis and characterization of chitosan derivatives with dual-antibacterial functional groups

Li, Zhihan; Yang, Fei; Yang, Rendang

doi:10.1016/j.ijbiomac.2015.01.056

Cited by 171 publications

(88 citation statements)

References 37 publications

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“…Li et al . () pointed out that the chitosan's positively charged amino group interfered with the negatively charged microbial cell membranes, resulting in the leakages of proteinaceous and other intracellular constituents of the microorganisms. Yuan et al .…”

Section: Resultsmentioning

confidence: 99%

“…The reduction in total viable counts for chitosan-containing package may be attributed to the antimicrobial effect of chitosan. Li et al (2015) pointed out that the chitosan's positively charged amino group interfered with the negatively charged microbial cell membranes, resulting in the leakages of proteinaceous and other intracellular constituents of the microorganisms. Yuan et al (2016) stated that the microbial DNA was interrupted by the diffused hydrolysis products from chitosan.…”

Section: Total Viable Count and Lactic Acid Bacteriamentioning

confidence: 99%

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Evaluation of modified casings and chitosan‐PVA packaging on the physicochemical properties of cooked Sichuan sausages during long‐term storage

Feng

Liu

Makino

et al. 2017

Int J of Food Sci Tech

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Summary The effects of a modified casing and chitosan‐poly‐vinyl alcohol antimicrobial packaging (CP packaging) on sausage colour, texture, microbial spoilage and volatile compounds after 29‐days storage were investigated. Casings were modified by surfactant solution (composed of soy lecithin and soy oil) and lactic acid. For samples stored in CP packaging, there were no significant differences between day 1 and day 29 in relation to sausage hardness and springiness (P > 0.05). Redness increased over storage time regardless of treatments and packagings. Total plate counts of samples packaged by CP packaging were lower than 1 log cfu g−1 during 29‐days storage. Cyclohexene, 1‐methyl‐4‐(1‐methylethylidene)‐ and α‐copaene were found in samples with control casings and CP packaging after 15‐days storage. The improved characteristics of the natural casing will enable meat processors or manufactures to enhance sausage production with a low sausage burst incidence, while the CP packaging will inhibit the intensive microbial growth.

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Section: Resultsmentioning

confidence: 99%

Section: Total Viable Count and Lactic Acid Bacteriamentioning

confidence: 99%

Evaluation of modified casings and chitosan‐PVA packaging on the physicochemical properties of cooked Sichuan sausages during long‐term storage

Feng

Liu

Makino

et al. 2017

Int J of Food Sci Tech

View full text Add to dashboard Cite

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“…However, this happened because the flocculation took place at concentrations below the range of zeta potential driven aggregation. Moreover with regard to removal of cyanobacteria, such absence of strong effects on particle surface charges may be viewed as positive; interactions of cationic NH 3 + groups of chitosan with the phosphoryl groups of phospholipid components of negative charged bacterial cell membranes increased membrane permeability and lysis [36, 37]. This led to release of cell contents [37].…”

Section: Discussionmentioning

confidence: 99%

“…First, the low dose coagulant should be effective in flocking the cells without causing damage. Hereto, it is important that the zeta-potential is not elevated too much to prevent loss of membrane integrity and subsequent leakage of cell constituents [36, 37]. Second, the ballast compounds themselves should be tested on their cyanobacteria settling capacity and it has been shown that a combination with a low dose of a coagulant is needed for effective flocking and the ballast for settling positively buoyant cyanobacteria [21, 27, 38, 39].…”

Section: Introductionmentioning

confidence: 99%

Coagulant plus ballast technique provides a rapid mitigation of cyanobacterial nuisance

et al. 2017

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Cyanobacteria blooms are a risk to environmental health and public safety due to the potent toxins certain cyanobacteria can produce. These nuisance organisms can be removed from water bodies by biomass flocculation and sedimentation. Here, we studied the efficacy of combinations of a low dose coagulant (poly-aluminium chloride—PAC—or chitosan) with different ballast compounds (red soil, bauxite, gravel, aluminium modified zeolite and lanthanum modified bentonite) to remove cyanobacterial biomass from water collected in Funil Reservoir (Brazil). We tested the effect of different cyanobacterial biomass concentrations on removal efficiency. We also examined if zeta potential was altered by treatments. Addition of low doses of PAC and chitosan (1–8 mg Al L-1) to the cyanobacterial suspensions caused flock formation, but did not settle the cyanobacteria. When those low dose coagulants were combined with ballast, effective settling in a dose-dependent way up to 99.7% removal of the flocks could be achieved without any effect on the zeta potential and thus without potential membrane damage. Removal efficacy was influenced by the cyanobacterial biomass and at higher biomass more ballast was needed to achieve good removal. The combined coagulant-ballast technique provides a promising alternative to algaecides in lakes, ponds and reservoirs.

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“…However, the membrane composition and fluidity may influence the subsequent consequences of CS treatment [97,112]; (ii) Some studies suggest a subsequent separation of the cell wall from the cell membrane, whilst others only mention a morphological change. Interaction with the membrane leads to altered cell permeability and may disrupt energy generation pathways [89,108,[112][113][114][115][116][117][118]; (iii) CS also causes agglutination and precipitation of the undesired microorganisms [77,106]. Indeed, E. coli was shown to protect itself by forming aggregates in the presence of chitooligosaccharides (COS), which only displayed a bacteriostatic effect and the bacteria could rapidly grow after separation from the CS by membrane filtration [108,119].…”

Section: Antimicrobial Functionsmentioning

confidence: 99%

Modification of Chitosan for the Generation of Functional Derivatives

et al. 2019

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Today, chitosan (CS) is probably considered as a biofunctional polysaccharide with the most notable growth and potential for applications in various fields. The progress in chitin chemistry and the need to replace additives and non-natural polymers with functional natural-based polymers have opened many new opportunities for CS and its derivatives. Thanks to the specific reactive groups of CS and easy chemical modifications, a wide range of physico-chemical and biological properties can be obtained from this ubiquitous polysaccharide that is composed of β-(1,4)-2-acetamido-2-deoxy-d-glucose repeating units. This review is presented to share insights into multiple native/modified CSs and chitooligosaccharides (COS) associated with their functional properties. An overview will be given on bioadhesive applications, antimicrobial activities, adsorption, and chelation in the wine industry, as well as developments in medical fields or biodegradability.

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Synthesis and characterization of chitosan derivatives with dual-antibacterial functional groups

Cited by 171 publications

References 37 publications

Evaluation of modified casings and chitosan‐PVA packaging on the physicochemical properties of cooked Sichuan sausages during long‐term storage

Evaluation of modified casings and chitosan‐PVA packaging on the physicochemical properties of cooked Sichuan sausages during long‐term storage

Coagulant plus ballast technique provides a rapid mitigation of cyanobacterial nuisance

Modification of Chitosan for the Generation of Functional Derivatives

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