Antioxidant properties of fungal chitosan from shiitake stipes

Yen, Ming-Tsung; Tseng, Yi-Hsiung; Li, Ruei-Chian; Mau, Jeng‐Leun

doi:10.1016/j.lwt.2005.08.006

Cited by 87 publications

(52 citation statements)

References 26 publications

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“…It shows that chitosan from Podophthalmus vigil was not effective in reducing power. It seems that reducing powers of chitosan also correlated with their N-deacetylation times (Yen et al 2007).…”

Section: Discussionmentioning

confidence: 98%

“…In this study, DPPH was used to determine the proton-scavenging activity of the various disaccharide chitosan derivatives. Yen et al (2008) reported that fungal chitosan scavenged DPPH radicals by 28.4-53.5% at 10mg/ml, obviously chitosan from crab shells and shiitake stipes was also not an effective scavenger for DPPH radicals. Yen et al (2007) reported the scavenging ability of crab chitosan C60 on DPPH radicals was 28.4% at 10mg/ml, whereas these of other crab chitosan were in the range of 46.4-52.3%.…”

Section: Discussionmentioning

confidence: 99%

“…However, EDTA showed high chelating ability of 88.75% at 10mg/ml. Yen et al (2007) reported that 1mg/ml chelating abilities of fungal chitosan were all chelated. Lin and Chou (2004) reported that the chelating abilities of N-alkylated disaccharide chitosan derivative were less than that observed with EDTA.…”

Section: Discussionmentioning

confidence: 99%

“…Antioxidant properties of chitosan derivatives have been studied (Lin and Chou 2004;Xie et al 2001;Xing et al 2005). Furthermore, antioxidant properties of fungal chitosan from shiitake stipes have also been studied (Yen et al 2007).…”

Section: Introductionmentioning

confidence: 99%

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In Vitro Antimicrobial and Antioxidant Activity of Chitosan Isolated from Podophthalmus Vigil

Prabu¹

2012

J. App. Pharm. Sci.

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In the present study, Chitin has been extracted from Podophthalmus vigil. The obtained chitin was transformed into the more useful chitosan we evaluated the antimicrobial activity of different concentrations (25%, 50%, 75% and 100%) of chitosan against 10 species of bacteria and fungi by agar-disc diffusion method. As the concentration of chitosan increased, the antimicrobial effect was strengthened. In the conjugated diene method, the total antioxidant activity of chitosan was ranging from 18.37% to 79.58% at varying concentrations (0.1 to 10mg/ml). The reducing capability ranged from of 0.12% to 0.48% at varying concentration (0.1 to 10mg/ml). The 1, 1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging potential of chitosan ranged from 18.08% to 55.56% at varying concentrations (0.1 to 10mg/ml). The chelating ability of chitosan from Podophthalmus vigil on ferrous ions was ranging from 25.82% to 73.54% for the concentration between 0.1-10mg/ml. Hydroxyl radicals scavenging activity of chitosan (0.125-2 mg/ml) was found to be higher than the ascorbic acid and the range was from 23.18% to 93.28%. Superoxide anion radical was ranging from 5.21% to 65.81% for the concentration between 0.125-2 mg/ml. overall, chitosan from Podophthalmus vigil was good in antimicrobial and antioxidant activity, and may be used as a source of antioxidants, as a possible food supplement or ingredient in the pharmaceutical industry. .

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Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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In Vitro Antimicrobial and Antioxidant Activity of Chitosan Isolated from Podophthalmus Vigil

Prabu¹

2012

J. App. Pharm. Sci.

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“…Because of chitosan is an important material, there are many papers about preparation of chitosan from different kind of organism such as crustaceans (crabs, shrimp, lobsters, etc.) (Yen et al, 2009), insect (housefly, Honeybees, Beetle) (MiAoWu, 2011), fungi (shiitake stipes) (Yen et al, 2007). Although little work has been recorded on the extraction of chitin from chicken feet which increasingly litters in areas where they aren't consumed, disposal of the chicken feet constitutes an environmental problem.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Chitosan From Chicken Feet

Zaeed¹,

Issa²,

Karabet³

2017

AJR

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In view of the increasing importance of chitosan, this study was carried out to investigate the preparation and characterization of chitosan from chicken feet which were economically unevaluated. Chitosan was prepared from the feet of chicken using the conventional methods of pretreatment, demineralization, deproteinization, discoloration (chitin), and deacetylation (chitosan). The yield of crud chitin and chitosan were 17% and 5% respectively. The results obtained revealed that molar mass average of chitosan monomer was 165.62 g/mol with degree of deacetylation (DDA) 89% calculated from mathematical and UV spectrophotometer methods. The FT-IR spectrum of chitosan also determined and characterization was done and compared with standards.

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Chitosan and Low Molecular Weight Chitosan: Biological and Biomedical Applications

Inamdar

Mourya²

2014

Advanced Biomaterials and Biodevices

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Antioxidant properties of fungal chitosan from shiitake stipes

Cited by 87 publications

References 26 publications

In Vitro Antimicrobial and Antioxidant Activity of Chitosan Isolated from Podophthalmus Vigil

In Vitro Antimicrobial and Antioxidant Activity of Chitosan Isolated from Podophthalmus Vigil

Preparation and Characterization of Chitosan From Chicken Feet

Chitosan and Low Molecular Weight Chitosan: Biological and Biomedical Applications

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