Synthesis and antimicrobial properties of new chitosan derivatives containing guanidinium groups

Salama, Ahmed; Hasanin, Mohamed S.; Hesemann, Peter

doi:10.1016/j.carbpol.2020.116363

Cited by 84 publications

(39 citation statements)

References 36 publications

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“…For example, one study showed that the performance and health of Nile tilapia ( Oreochromis niloticus ) were significantly improved when chitosan nanoparticles were loaded in basic diets (one gram per kilogram) [ 20 ]. Similarly, Khani Oushani et al found that diets supplemented with 0.05 g kg −1 of nano-chitosan and clinoptilolite could improve the growth performance and immune parameters of rainbow trout ( Oncorhynchus mykiss ) [ 21 , 22 , 23 , 24 ]. However, these studies mentioned above principally aimed to improve the immunity of aquatic animals.…”

Section: Introductionmentioning

confidence: 99%

Effects of Chitosan–Gentamicin Conjugate Supplement on Non-Specific Immunity, Aquaculture Water, Intestinal Histology and Microbiota of Pacific White Shrimp (Litopenaeus vannamei)

Liang

Hou

et al. 2020

Marine Drugs

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When the aquaculture water environment deteriorates or the temperature rises, shrimp are susceptible to viral or bacterial infections, causing a large number of deaths. This study comprehensively evaluated the effects of the oral administration of a chitosan–gentamicin conjugate (CS-GT) after Litopenaeus vannamei were infected with Vibrio parahaemolyticus, through nonspecific immunity parameter detection, intestinal morphology observation, and the assessment of microbial flora diversification by 16S rRNA gene sequencing. The results showed that the oral administration of CS-GT significantly increased total hemocyte counts and reduced hemocyte apoptosis in shrimp (p < 0.05). The parameters (including superoxide dismutase, glutathione peroxidase, glutathione, lysozyme, acid phosphatase, alkaline phosphatase, and phenoloxidase) were significantly increased (p < 0.05). The integrity of the intestinal epithelial cells and basement membrane were enhanced, which correspondingly alleviated intestinal injury. In terms of the microbiome, the abundances of Vibrio (Gram-negative bacteria and food-borne pathogens) in the water and gut were significantly reduced. The canonical correspondence analysis (CCA) showed that the abundances of Vibrio both in the water and gut were negatively correlated with CS-GT dosage. In conclusion, the oral administration of CS-GT can improve the immunity of shrimp against pathogenic bacteria and significantly reduce the relative abundances of Vibrio in aquaculture water and the gut of Litopenaeus vannamei.

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Section: Introductionmentioning

confidence: 99%

Effects of Chitosan–Gentamicin Conjugate Supplement on Non-Specific Immunity, Aquaculture Water, Intestinal Histology and Microbiota of Pacific White Shrimp (Litopenaeus vannamei)

Liang

Hou

et al. 2020

Marine Drugs

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“…In the spectrum of CA‐FeNPs, the absorption peak at around 2875 cm −1 can be attributed to the C–H symmetrical stretch 49 . The peaks at 1637 and 1559 cm −1 are ascribed to the C=O stretching (amide I) and –NH stretching (amide II), respectively 50 . The peak at 577 cm −1 is from Fe–O bonding, 28 demonstrating the successful incorporation of FeNPs.…”

Section: Resultsmentioning

confidence: 96%

Magnetic chitosan‐based aerogel decorated with polydimethylsiloxane: A high‐performance scavenger for oil in water

Yin

Liu

Bao

et al. 2021

J of Applied Polymer Sci

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Most ingredients used to construct porous substrate of hydrophobic magnetic absorbent for oil/water separation are toxic, environmentally incompatible and difficult to degrade. With the purpose of solving this problem, a magnetic chitosan (CS)‐based aerogel decorated with polydimethylsiloxane (PDMS) was successfully fabricated in this work. The magnetic porous substrate was built by the electrostatic interactions between CS, itaconic acid and Fe3O4 nanoparticles (FeNPs) in water solution, followed by a freeze‐drying process. The hydrophobic properties were rendered to the substrate by the crosslinking reaction of PDMS. Owing to the low density (0.0655 g/cm3) and high porosity (92%), the prepared aerogel displayed high absorption capacities (8.89–22.38 g/g) towards the testing organic liquids. The silylation process provided the aerogel with excellent hydrophobic properties (water contact angle, 147.1°), resulting in selectively absorbing oil from immiscible oil/water mixture and water‐in‐oil emulsion. Due to the uniformly distributed FeNPs, the remote control of the aerogel by external magnetic field was acquired, the saturation magnetization of which was 11.22 emu/g. Furthermore, the aerogel could also continuously separate heavy oil from water by acting as filter. The experimental results indicate that this renewable, environmentally benign and bifunctional aerogel has great potential in oily wastewater remediation.

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“…Different chitosan sources have different molecular weight, deacetylation grade, and emulsion abilities from the chitosan of a crab shell. The chitosan's molecular weight, length, deacetylation levels, and the replacement position of glucosamine chitosan units, pH chitosan solution, and target organisms can affect its inhibitory efficacy (Salama et al, 2020).…”

Section: Chitosanmentioning

confidence: 99%

Halal antimicrobials in food: A review on prospects and challenges of antimicrobials from animal sources

Sani

Jamaludin

Al‐saari

et al. 2020

JHIS

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Food antimicrobial agents (FAA) provide the first food defence system against pathogens for processed food products. In addition, they function as an antioxidant in preventing colour and taste changes for food safety and quality. Muslim consumers are concerned about the source of FAA which may contain non-permissible ingredients according to Islam including pig and unslaughtered permissible animal sources. They also raise concerns about the increasing risk of toxicity when the FAA is consumed and the possibility of the FAA rendering organoleptic effect on the food. The application of the FAA protects the food from microbial contamination and indirectly combats emerging devastating diseases. Hence, halal FAA (HFAA) can be introduced so that Muslim consumers can accept FAA usage. Generally, HFAA is categorised according to ingredient sources such as animal, plant, bacteria, or synthetic origins. There are doubts on the halal status of animal-origin FAA as the source might be originating from pig, unslaughtered animal, human, or origins which are filthy. The animal-origin FAA shows strong antimicrobial properties against Gram-positive and negative pathogens, as well as toxicity and organoleptic issues. Thus, the FAA should be used within the allowable range. HFAA has become one of the most studied FAAs due to these issues. Many HFAAs are produced from animals without the full verification of halal status. This review presents an overview of the origins and challenges of HFAA production. Furthermore, this study also highlights how FAA could be verified as halal which is the theme of future research in HFAA development.

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Synthesis and antimicrobial properties of new chitosan derivatives containing guanidinium groups

Cited by 84 publications

References 36 publications

Effects of Chitosan–Gentamicin Conjugate Supplement on Non-Specific Immunity, Aquaculture Water, Intestinal Histology and Microbiota of Pacific White Shrimp (Litopenaeus vannamei)

Effects of Chitosan–Gentamicin Conjugate Supplement on Non-Specific Immunity, Aquaculture Water, Intestinal Histology and Microbiota of Pacific White Shrimp (Litopenaeus vannamei)

Magnetic chitosan‐based aerogel decorated with polydimethylsiloxane: A high‐performance scavenger for oil in water

Halal antimicrobials in food: A review on prospects and challenges of antimicrobials from animal sources

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