Determination of Lovastatin, β-glucan, Total Polyphenols, and Antioxidant Activity in Raw and Processed Oyster Culinary-Medicinal Mushroom, Pleurotus ostreatus (Higher Basidiomycetes)

2015 ◽  
Vol 17 (2) ◽  
pp. 117-128 ◽  
Author(s):  
Yu Shan Lam ◽  
Edward J. Okello
Keyword(s):  
Antioxidant Activity ◽  
Pleurotus Ostreatus ◽  
Medicinal Mushroom ◽  
Total Polyphenols

The rapid determination of total polyphenols content and antioxidant activity in Dendrobium officinale using near-infrared spectroscopy

2016 ◽  
Vol 8 (23) ◽  
pp. 4584-4589 ◽  
Author(s):  
Longhui Ma ◽  
Zhimin Zhang ◽  
Xingbing Zhao ◽  
Sufeng Zhang ◽  
Hongmei Lu
Keyword(s):  
Antioxidant Activity ◽  
Infrared Spectroscopy ◽  
Near Infrared ◽  
Rapid Determination ◽  
Nir Spectroscopy ◽  
Dendrobium Officinale ◽  
Chemometric Methods ◽  
Total Polyphenols ◽  
Rapid Quantification

NIR spectroscopy coupled with chemometric methods for rapid quantification of total polyphenols content and antioxidant activity inDendrobium officinale.

scholarly journals EVALUATION OF TOTAL POLYPHENOLS AND ANTIOXIDANT CAPACITY IN MUSHROOM EXTRACTS PLEUROTUS OSTREATUS AND LENTINULA EDODES

2020 ◽  
pp. 96-99
Author(s):  
IVAN MARCELO GARCIA ◽  
ARTURO ROJAS S. ◽  
DANILO MONTERO ◽  
MARCO ARELLANO
Keyword(s):  
Antioxidant Activity ◽  
Antioxidant Capacity ◽  
Gallic Acid ◽  
Pleurotus Ostreatus ◽  
Lentinula Edodes ◽  
Ethanolic Extract ◽  
Total Polyphenols ◽  
Methanolic Extracts ◽  
High Antioxidant Activity ◽  
Mushroom Extracts

Objective: This research was aimed at assessing the concentration of total polyphenols in ethanolic and methanolic extracts of Pleurotus ostreatus and Lentinula edodes mushrooms and antioxidant activity. Methods: Polyphenols were determined by the Folin Ciocalteu method, using lyophilized mushroom samples for the preparation of extracts and antioxidant activity by the TBARS method. Results: Extracts prepared from mushrooms showed appreciable values ​​of polyphenols, and for the ethanolic extract of Pleurotus ostreatus and Lentinula edodes values ​​of 102.78 and 81.83 mg of gallic acid/100 g of the sample respectively, comparable to those obtained in some fruits For methanolic extracts, values ​​of 100.45 and 78.92 mg of gallic acid/100 g of sample were obtained. Polyphenol concentration values ​​for the Pleurotus were higher in the two types of extracts and lower for the Lentinula edodes. Conclusion: When evaluating the antioxidant activity, high antioxidant activity was found for the two types of mushroom, Pleurotus ostreatus and Lentinula edodes, presenting peroxidase inhibition values ​​of 88.04 and 89.49% respectively.

scholarly journals THE INFLUENCE OF CLIMATIC CONDITIONS ON OENOLOGICAL PARAMETERS OF SOME WINE CULTIVARS FROM DIFFERENT ROMANIANVINEYEARD

2020 ◽  
Vol 1 (1) ◽  
pp. 103-110
Author(s):  
PetronelaAnca Onache ◽  
Dorin Ioan Sumedrea ◽  
Alina Florea ◽  
Andrei Tănase
Keyword(s):  
Antioxidant Activity ◽  
Statistical Analysis ◽  
Climatic Conditions ◽  
Pinot Noir ◽  
Chemical Parameters ◽  
Total Polyphenols ◽  
Sauvignon Blanc

A study concerning the influence of climatic conditions on the oenological parameters of wine cultivars was carried out using six wine cultivars under the climatic conditions of 2019. Wine samples were taken from Ştefăneşti–Argeş, Babadag and Drăgăşani viticultural centres. Determination of the oenological parameters has been made for the following wine cultivars: Riesling Italian, Fetească Regală, Sauvignon Blanc, Feteascǎ Neagră, Merlot and Pinot Noir. The chemical parameters were determined using a Mindray BS 200 oenological analyser and the statistical analysis of the results was carried out using the Duncan test. A correlation was made between the parameters of the six wine cultivars from the three viticultural centres, focusing on the correlations between the total polyphenols of wines and their antioxidant activity.

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