Biblioteca Digital do Instituto Politécnico de Bragança   Instituto Politécnico de Bragança

Biblioteca Digital do IPB >
Escola Superior Agrária >
Biologia e Biotecnologia >
BB - Resumos em Proceedings Não Indexados ao ISI/Scopus >

Please use this identifier to cite or link to this item:

Título: Water soluble polysaccharidic and ethanolic fractions of wild edible mushrooms: chemical composition and bioactivity evaluation.
Autor: Vaz, Josiana A.
Tavares, Catarina
Almeida, Gabriela M.
Martins, Anabela
Vasconcelos, M. Helena
Ferreira, Isabel C.F.R.
Issue Date: 2012
Citação: Vaz, Josiana A.; Tavares, Catarina; Almeida, Gabriela M.; Martins, Anabela; Vasconcelos, M. Helena; Ferreira, Isabel C.F.R. (2012) - Water soluble polysaccharidic and ethanolic fractions of wild edible mushrooms: chemical composition and bioactivity evaluation. In 3rd I3S Scientific Retreat IBMC/INEB/IPATIMUP. Póvoa de Varzim
Resumo: Mushrooms have become attractive as functional foods and as a source of physiologically beneficial bioactive compounds. The huge mushrooms reservoir of Northeast Portugal must be chemically and nutritionally characterized for the benefit of the local populations and for the genetic conservation of wild macrofungi. Herein, we describe and compare the chemical constituents (phenolic compounds, macronutrients, sugars, fatty acids, tocopherols and ascorbic acid) of four wild edible mushrooms widely appreciated in gastronomy: Armillaria mellea (Vahl) P. Kumm., Calocybe gambosa (Fr.) Donk, Clitocybe odora (Fr.) P. Kumm., Coprinus comatus (O.F. Müll.) Pers. Furthermore, the antioxidant and antitumour potential of their water soluble polysaccharidic and ethanolic fractions was studied by in vitro assays: radical scavenging activity, reducing power and lipid peroxidation inhibition for antioxidant activity, and sulforhodamine B assay for cell growth inhibition C. comatus revealed the highest concentrations of sugars (43.23/100 g dry weight), PUFA (77.46%), phenolic compounds (45.02 mg/kg), tocopherols (301.03 μg/100 g) and, among all of the fractions tested, its ethanolic fraction showed the highest antioxidant activity (EC50 < 2.6 mg/mL). C. odora revealed one of the highest ascorbic acid (172.65 mg/100 g) contents and its water soluble polysaccharidic fraction showed the best antioxidant properties (EC50 < 3.6 mg/mL) among the polysaccharidic fractions. The studied samples did not cause alterations in the cell growth of four human tumour cell lines (lung, breast, gastric and colon cancer). Therefore, despite the absence of antitumour potential, the studied mushroom species could potentially be used in well-balanced diets, as a source of antioxidant compounds.
Arbitragem científica: yes
Appears in Collections:BB - Resumos em Proceedings Não Indexados ao ISI/Scopus

Files in This Item:

File Description SizeFormat
Poster Nac. 74.pdf251,16 kBAdobe PDFView/Open

Please give feedback about this item
FacebookTwitterDeliciousLinkedInDiggGoogle BookmarksMySpaceOrkut
Formato BibTex mendeley Endnote Logotipo do DeGóis 

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.


© Instituto Politécnico de Bragança - Biblioteca Digital - Feedback - Statistics
Promotores do RCAAP   Financiadores do RCAAP

Fundação para a Ciência e a Tecnologia Universidade do Minho   Governo Português Ministério da Educação e Ciência PO Sociedade do Conhecimento (POSC) Portal oficial da União Europeia