| Abstrakt: |
The study aimed to determine amino acid and some minerals and vitamins, and to examine phenolic compounds and antimicrobial activity of edible tropical bolete (Phlebopus colossus(R. Heim) Singer) fruiting bodies as affected by different extraction solvents. Glutamic and aspartic acids were found as predominant amino acids (11.21–13.72% of total amino acids) in P. colossus. A high concentration of potassium (3569 mg/100 g) was observed in this bolete sample with a potential source of riboflavin (0.83 mg/100 g) and a trace of thiamine. The P. colossusextracts consisted of gallic acid, resorcinol, catechol, ellagic acid, vanillin, acetyl salicylic acid, benzoic acid, salicylic acid, and quercetin. The methanol and ethanolic extracts had more efficient to release these abundant phenolic compounds than acetonic extract. Interestingly, ellagic acid was found to be the main constituents of this fresh mushroom extract (74.68–82.94%), while the freeze-dried mushroom extract contained acetyl salicylic acid as the main component (47.58–54.27%), followed by ellagic acid (27.42–31.18%). The bolete mushroom extract tended to inhibit some pathogenic organisms, such as Bacillus cereusand Candida albicans. Therefore, the P. colossusmushroom could be further used for dietary supplement and pharmaceutical purposes. |
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