Antifungal activity of different molecular weight chitosans against planktonic cells and biofilm of Sporothrix brasiliensis

Garcia, Lana Glerieide Silva; Guedes, Gláucia Morgana de Melo; Fonseca, Xhaulla Maria Quariguasi Cunha; Pereira-Neto, Waldemiro Aquino; Castelo‐Branco, Débora Souza Collares Maia; Sidrim, José Júlio Costa; Cordeiro, Rossana de Aguiar; Rocha, Marcos Fábio Gadelha; Vieira, Rodrigo Silveira; Brilhante, Raimunda Sâmia Nogueira

doi:10.1016/j.ijbiomac.2019.12.031

Cited by 32 publications

(22 citation statements)

References 34 publications

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“…GPCS has the lowest MIC (0.0625 mg/mL) and MBC (0.125 mg/mL), indicating its superior antibacterial activities against E. coli and S. aureus . The reason why GPCS exhibited the higher MIC and MBC was because of its high DDA and low MW [ 48 ], which was consistent with physicochemical parameters ( Figure 1 ). WSCS, GPCS, and AKCS had the same MBC, lower than CCC against S. aureus .…”

Section: Resultssupporting

confidence: 57%

Insight into Physicochemical, Rheological, and Antibacterial Properties of Chitosan Extracted from Antarctic krill: A Comparative Study

et al. 2020

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In this work, physicochemical, rheological, and antibacterial properties of chitosan (CS) extracted from white shrimp (WS), giant river prawn (GP), and Antarctic krill (AK) were investigated. The results demonstrated that molecular weight (MW) of commercial chitosan (CCS), WSCS, GPCS, and AKCS were 1175.8, 2130.4, 1293.3, and 1109.3 kDa with the degree of deacetylation (DDA) of 73.5, 74.1, 82.1, and 75.9%, respectively. Fourier transform infrared (FT-IR), X-ray diffraction (XRD), differential scanning calorimetry (DSC), and scanning electron microscope (SEM) were employed to study the structural differences of CS. Moreover, storage modulus (G′) and loss modulus (G″) of AKCS were lower than that of WSCS and GPCS, respectively, but higher than that of CCS. Minimum inhibitory concentration (MIC) and minimum bacterial concentration (MBC) of CS against Escherichia coli and Staphylococcus aureus were investigated at concentration between 0.0125 and 1 mg/mL. These results highlighted that AKCS with low viscoelastic properties had a potential application in food and pharmaceutical application.

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Section: Resultssupporting

confidence: 57%

Insight into Physicochemical, Rheological, and Antibacterial Properties of Chitosan Extracted from Antarctic krill: A Comparative Study

et al. 2020

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“…Nevertheless, according to Zhou et al [ 26 ] the antibacterial activity of plant polysaccharides can be exerted by increasing the permeability of the cell membrane, inhibiting the adsorption of pathogenic bacteria to host cells, or blocking the transmembrane transport of nutrients or energy substances. In general, six principle antibacterial mechanisms of polysaccharides have been investigated in previous studies, the most important of which are as follows: (i) effect on bacterial biofilm (e.g., chitosan [ 27 , 28 ]); exopolysaccharides extracts from Pleurotus flabellatus strain Mynuk mycelium [ 29 ]; sulphated polysaccharides extracted from Chlamydomonas reinhardtii [ 30 ]; xanthan-oligosaccharide [ 31 ]; probiotic bacteria exopolysaccharides [ 32 ]), (ii) effects on bacterial nucleic acids (e.g., FITC-labelled chitosan oligomers [ 33 ]; Streptomyces virginia H03 polysaccharide [ 22 ]; chitosan [ 34 ]; sulphated polysaccharides extracted from Chlamydomonas reinhardtii [ 30 ]), (iii) effects on bacterial intracellular metabolic pathways (e.g., Sulphated polysaccharides extracted from Chlamydomonas reinhardtii [ 30 ]; chitosan [ 28 , 35 , 36 ]; Tetrastigma hemsleyanum Diels et Gilg’s polysaccharide [ 35 ]), (iv) effects on bacterial mycoproteins (e.g., Cordyceps cicadae polysaccharide [ 36 ]; Chaetomium globosum CGMCC 6882 polysaccharide [ 37 ]; chitosan and chitosan oligosaccharides [ 38 ]; chitosan [ 34 , 39 ]), (v) effects on bacterial cell wall (e.g., chitosan [ 36 ], [ 40 , 41 , 42 , 43 ]; chitosan and chito-oligosaccharides mixture [ 43 ]; Streptomyces virginia H03 exopolysaccharide [ 22 ]; Cordyceps cicadae polysaccharide [ 36 ]), and (vi) effects on bacterial cell membrane (e.g., chitosan [ 39 ]; Chaetomium globosum CGMCC 6882 polysaccharide [ 44 ]; Cordyceps cicadae polysaccharide [ 36 ...…”

Section: Resultsmentioning

confidence: 99%

A New Approach in Meat Bio-Preservation through the Incorporation of a Heteropolysaccharide Isolated from Lobularia maritima L.

Akacha

Najar

Venturi

et al. 2022

Foods

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In this study, a new heteropolysaccharide extracted from Lobularia maritima (L.) Desv. (LmPS), a halophyte harvested in Tunisia, was evaluated as an antioxidant and antibacterial additive in the bio-preservation of raw minced meat. For antibacterial testing, Gram-positive bacteria such as Staphylococcus aureus ATCC and Listeria monocytogenes ATCC 19,117 and Gram-negative bacteria such as Salmonella enterica ATCC 43,972 and Escherichia coli ATCC 25,922 were used. The results indicate that this polymer had a significant antibacterial activity against foodborne pathogens. Additionally, the effects of LmPS at 0.15, 0.3 and 0.6% on refrigerated raw ground beef were investigated from a microbiological, chemical, and sensory perspective. Microbiological analysis of the meat showed that treatment with LmPS significantly (p < 0.05) improved its shelf life, while the biochemical analysis evidenced a significant (p < 0.05) decrease in lipid oxidation. LmPS at 0.6% significantly reduced by 61% and 48% metmyoglobin accumulation at the end of the storage period when compared to BHT and control samples, respectively. The chemometric approach highlighted the relationships among the different meat quality parameters. LmPS can be introduced in the food industry as a powerful natural additive and could be an alternative to synthetic antioxidant compounds.

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“…Sporotrichosis is a zoonotic mycosis, caused by species belonging to the S. schenckii complex, including S. schenckii, S. luriei, S. brasiliensis , and so on. This disease occurs in several parts of the world, including Latin America, South Africa, India, and Japan ( Garcia et al, 2020 ). Garcia et al (2020) studied the effect of molar mass of chitosan on the anti-microbial activity on the S. brasiliensis .…”

Section: Molar Mass Effects In the Stabilisation Of Suspensions And Ementioning

confidence: 99%

“…This disease occurs in several parts of the world, including Latin America, South Africa, India, and Japan ( Garcia et al, 2020 ). Garcia et al (2020) studied the effect of molar mass of chitosan on the anti-microbial activity on the S. brasiliensis . They used three chitosan (CH) samples with different MW and DD (degree of deacetylation) CHLMW (MW = 206 kg/mol, DD = 79%), CHMMW (MW = 467 kg/mol, DD = 84%), CHHMW (MW = 984 kg/mol, DD = 82%).…”

Section: Molar Mass Effects In the Stabilisation Of Suspensions And Ementioning

confidence: 99%

Molar mass effect in food and health

Nishinari

Fang

2021

Food Hydrocolloids

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It is demanded to supply foods with good quality for all the humans. With the advent of aging society, palatable and healthy foods are required to improve the quality of life and reduce the burden of finance for medical expenditure. Food hydrocolloids can contribute to this demand by versatile functions such as thickening, gelling, stabilising, and emulsifying, controlling texture and flavour release in food processing. Molar mass effects on viscosity and diffusion in liquid foods, and on mechanical and other physical properties of solid and semi-solid foods and films are overviewed. In these functions, the molar mass is one of the key factors, and therefore, the effects of molar mass on various health problems related to noncommunicable diseases or symptoms such as cancer, hyperlipidemia, hyperglycemia, constipation, high blood pressure, knee pain, osteoporosis, cystic fibrosis and dysphagia are described. Understanding these problems only from the viewpoint of molar mass is limited since other structural characteristics, conformation, branching, blockiness in copolymers such as pectin and alginate, degree of substitution as well as the position of the substituents are sometimes the determining factor rather than the molar mass. Nevertheless, comparison of different behaviours and functions in different polymers from the viewpoint of molar mass is expected to be useful to find a common characteristics, which may be helpful to understand the mechanism in other problems.

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Antifungal activity of different molecular weight chitosans against planktonic cells and biofilm of Sporothrix brasiliensis

Cited by 32 publications

References 34 publications

Insight into Physicochemical, Rheological, and Antibacterial Properties of Chitosan Extracted from Antarctic krill: A Comparative Study

Insight into Physicochemical, Rheological, and Antibacterial Properties of Chitosan Extracted from Antarctic krill: A Comparative Study

A New Approach in Meat Bio-Preservation through the Incorporation of a Heteropolysaccharide Isolated from Lobularia maritima L.

Molar mass effect in food and health

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