Antioxidant activity of Agaricus brasiliensis basidiocarps on different maturation phases

Mourão, Francielly; Umeo, Suzana Harue; Takemura, Orlando Seiko; Linde, Giani Andréa; Colauto, Nelson Barros

doi:10.1590/s1517-83822011000100024

Cited by 40 publications

(33 citation statements)

References 47 publications

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“…For hydrogen peroxide and superoxide anion measurements, water was the solvent and fordi(phenyl)-(2,4,6-trinitrophenyl)iminoazanium (DPPH) and β-carotene, methanol was the solvent. The mixtures were incubated at 60°C for 60 min and were manually agitated every 10 min (Mourão et al, 2011). The mixture was centrifuged at 4400 g for 20 min at 4°C and the supernatant was lyophilized to determine the antioxidant activity.…”

Section: Antioxidant Activitymentioning

confidence: 99%

Iron translocation in Pleurotus ostreatus basidiocarps: production, bioavailability, and antioxidant activity

et al. 2016

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ABSTRACT. Translocation of minerals from substrate to mushrooms can change the medicinal characteristics, commercial value, and biological efficiency of mushroom. In the present study, we demonstrated that addition of iron to the substrate reduces the yield of Pleurotus ostreatus mushroom. The biological efficiency of the mushroom varied from 36.53% on the unsupplemented substrate to 2.08% for the substrate with 500 mg/kg iron added. The maximum iron concentration obtained for mushroom was 478.66 mg/kg (dry basis) and the maximum solubility in vitro was 293.70 mg/kg (dry basis). Iron translocation increased the ash and protein content, reduced antioxidant activity, and enhanced the aroma and flavor characteristics of the mushroom. However mushroom has higher amounts of iron than vegetables like collard greens, it is not feasible to use mushrooms as the only dietary source of iron. The study also indicated that because of more bioaccumulation of iron in mycelium than in the mushroom, mycelium and not mushroom, could be a better alternative as a non-animal iron source.

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Section: Antioxidant Activitymentioning

confidence: 99%

Iron translocation in Pleurotus ostreatus basidiocarps: production, bioavailability, and antioxidant activity

et al. 2016

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“…For the DPPH assay T. riparia essential oil or the 6,7-dehydroroyleanone was sequentially diluted and, for each dilution, 0.1 mL was mixed with a fresh DPPH methanolic solution (2.9 mL, 60 µM)-absorbance previously adjusted to 0.7 ± 0.05-to establish a curve [25,26]. After 30 min the decreasing value of absorbance at 515 nm was observed.…”

Section: Antioxidant Activitymentioning

confidence: 99%

New Natural Diterpene-Type Abietane from Tetradenia riparia Essential Oil with Cytotoxic and Antioxidant Activities

et al. 2014

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Tetradenia riparia (Hochstetter) Codd belongs to the Lamiaceae family and it was introduced in Brazil as an exotic ornamental plant. A previous study showed its antimicrobial, acaricidal and analgesic activities. Two compounds were isolated from essential oil of T. riparia leaves and identified as 9β,13β-epoxy-7-abietene (1), a new one, OPEN ACCESSMolecules 2014, 19 515 and 6,7-dehydroroyleanone (2), already reported for another plant. The structure of these compounds was determined by spectroscopic analysis and by comparison with literature data. The cytotoxic activities of the essential oil and compounds 1 and 2 were determined by a 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-2H-tetrazolium bromide (MTT) assay, and by tumor cells MDA-MB-435 (human breast carcinoma), HCT-8 (human colon), SF-295 (human nervous system) and HL-60 (human promyelocytic leukemia). The essential oil and compound 1 showed high cytotoxic potential of the cell lines SF-295 (78.06% and 94.80%, respectively), HCT-8 (85.00% and 86.54%, respectively) and MDA-MB-435 (59.48% and 45.43%, respectively). Compound 2 had no cytotoxic activity. The antioxidant activity was determined by 2,2-diphenyl-1-picryl-hydrazyl (DPPH), β-carotene-linoleic acid system and 2,2'-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) assays. The inhibitory concentration (IC 50 in µg mL −1 ) for essential oil and compound 2 was, respectively 15.63 and 0.01 for DPPH; 130.1 and 109.6 for β-carotenelinoleic acid and 1524 and 1024 for ABTS. Compound 1 had no antioxidant activity. By fractioning the oil, it was possible to identify two unpublished compounds: 1 with high cytotoxic potential and 2 with high antioxidant potential.

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“…First, 1.5 mL methanol was added to the freeze-dried mycelial biomass or 0.2 g exopolysaccharides and stored at 60°C for 60 min (Mourão et al, 2011); the mixture was centrifuged at 4400 g for 20 min at 4°C. The supernatant was considered the raw extract.…”

Section: Antioxidant Activity Of Mycelial Biomass and Exopolysaccharidesmentioning

confidence: 99%

Short Communication Screening of basidiomycetes in submerged cultivation based on antioxidant activity

Umeo¹,

Souza²,

Rapachi³

et al. 2015

Genet. Mol. Res.

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ABSTRACT. Submerged cultivation of medicinal basidiomycetes is a reproducible and efficient method of producing mycelia and metabolites. The antioxidant activity indicates its medicinal properties and is an important tool for basidiomycete screening. In this study, we analyzed the production of mycelial biomass and exopolysaccharides and the antioxidant activity of basidiomycete strains in submerged cultivation. Twenty-five strains were used for submerged cultivation in extract malt medium, and the production of mycelial biomass and exopolysaccharides was evaluated. Antioxidant activity was determined using the 1,1-diphenyl-2-picrylhydrazyl method. Among the 25 evaluated strains, Lentinus crinitus produced the highest biomass, reaching 1190 ± 52 mg·L -1 day -1 ; Agaricus subrufescens strains had the highest exopolysaccharide production from 18.96 ± 0.15 to 20.97 ± 2.10 mg L -1 ·day -1 . Additionally, A. subrufescens showed the highest total antioxidant activity, reinforcing the therapeutic potential of this basidiomycete. No significant correlation was found between mycelial biomass or exopolysaccharide production and antioxidant activity; S.H. Umeo et al. 9908©FUNPEC-RP www.funpecrp.com.br Genetics and Molecular Research 14 (3): 9907-9914 (2015) however, the results depended on each species and the strains of the same species. We found large variations in the production of mycelial biomass and exopolysaccharides and in antioxidant activity among different species and among strains of the same species. Thus, evaluating the total antioxidant activity is an important tool for identifying strains with biotechnological potential.

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Antioxidant activity of Agaricus brasiliensis basidiocarps on different maturation phases

Cited by 40 publications

References 47 publications

Iron translocation in Pleurotus ostreatus basidiocarps: production, bioavailability, and antioxidant activity

Iron translocation in Pleurotus ostreatus basidiocarps: production, bioavailability, and antioxidant activity

New Natural Diterpene-Type Abietane from Tetradenia riparia Essential Oil with Cytotoxic and Antioxidant Activities

Short Communication Screening of basidiomycetes in submerged cultivation based on antioxidant activity

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