Abstract
Many researchers agree that edible mushrooms have beneficial effects on human health. The aim of this study is to investigate the chemical composition and antioxidant activities of methanol extracts obtained from Coprinus comatus, Hydnum repandum, Agaricus impudicus ve Sarcodon imbricatus collected from Yuvacık-İzmit, Kastamonu, and Uzungöl-Trabzon. Spectrophotometric analysis showed that the total phenolic (64.69 mg GAEs/g) and flavonoid (1.73 mg QEs/g) content of S. imbricatus was higher than that of the others. In line with its superiority in phytochemical composition analyzes, S. imbricatus extract showed the highest activity in -carotene bleaching, DPPH free radical scavenging and reducing power assays (836.0, 89.0 and 267.0 mg TEs/g extract, respectively). Metal chelating test resulted in the superiority of A. impudicus (1282.0 mg TEs/g). Relative antioxidant capacity index (RACI) value of S. imbricatus was quite high compared to other extracts (0.90). Apart from the metal chelating assay, there was a high correlation between the antioxidant activities of the extracts and their RACI values. Pearson correlation analysis showed that the correlation between the phenolic/flavonoid contents of the extracts and their antioxidant activities was over 0.9. The antioxidant activity of A. impudicus was brought to the literature for the first time with this study. When the data obtained from the current study were evaluated as a whole, it was concluded that S. imbricatus could be a rich source for new and alternative antioxidant compounds.
Highlights
In recent years, searches for the addition of new supplements to existing food supplements have started to intensify among both researchers and end consumers
The aim of this study is to investigate the chemical composition and antioxidant activities of methanol extracts obtained from Coprinus comatus, Hydnum repandum, Agaricus impudicus ve Sarcodon imbricatus collected from Yuvacık-İzmit, Kastamonu, and Uzungöl-Trabzon
There are some studies in the literature to elucidate the total phenolic/flavonoid contents and chemical compositions of C. comatus, H. repandum and S. imbricatus
Summary
Searches for the addition of new supplements to existing food supplements have started to intensify among both researchers and end consumers In this quest, mushrooms have gained great importance due to their nutritional properties and powerful bioactive chemicals (Mujić et al, 2011; Bowe, 2013; Falandysz & Borovička, 2013; Zhang et al, 2016; Jayachandran et al, 2017). Some mushroom compounds are known to inspire the development of various bioactive molecules in the pharmacology industry (Orangi et al, 2016) In addition to their antioxidant activities, mushrooms accumulate various minerals depending on the mineral substance concentration in the soil, and are among the important sources for meeting the mineral needs of organisms (Kosanić et al, 2016). It is thought that the presented data would fill an important gap in the literature
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