An investigation into the relationships between antioxidant activity and chemical elements as well as polyphenolics in fungal fruiting bodies growing on Betula L.

Szymański, Marcin; Smolibowska, Joanna; Szymański, Arkadiusz

doi:10.5601/jelem.2018.23.2.1412

Cited by 3 publications

(2 citation statements)

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“…A rich profile of phenolic acids in I. obliquus was presented in this study (Table 2) Numerous reports on the presence of phenolic acids in I. obliquus (Io) confirmed the presence of the following acids: gallic, protocatechuic, and p-hydroxybenzoic acid [34,50,[59][60][61]. Ju et al [62] isolated vanillic, protocatechuic, and 2.5-dihydroxyterephthalic acids.…”

Section: Discussionsupporting

confidence: 68%

A Bioactive Compounds Profile Present in the Selected Wood Rot

Szwajkowska-Michałek

Stuper‐Szablewska

Krzyżaniak

et al. 2022

Forests

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Wood rot fungi are an essential link in the forest ecosystem. The presented study aimed to determine the content of selected antioxidant active compounds of selected saprobionts commonly found in the European forests: Hypholoma fasciculare (Huds.) P. Kumm, Bjerkandera adusta (Willd.) P. Karst., Inonotus obliquus (Fr.) Pilát, Kuehneromyces mutabilis (Schaeff.) Singer & AH Sm., Trametes versicolor (L.) Lloyd, Pleurotus ostreatus (Jacq.) P. Kumm., Pholiota squarrosa (Vahl) P. Kumm. Chemical methods (HPLC determination, ABTS+ and FPA methods, and a saponification method by Acquity UPLC) were used to analyze active compounds. In the tested isolates, the presence of 13 phenolic acids has been observed, including p-coumaric, ferulic, chlorogenic, and sinapic acid, in high concentrations. The antioxidant activity was from 2.5 to 3.5 times higher in the isolates of I. obliquus, P. ostreatus, and H. fasciculare in comparison to P. squarrosa and B. adusta. All isolates were tested for β-carotene, lutein, zeaxanthin, and astaxanthin. High concentrations of flavonoids were observed in H. fasciculare and P. squarrosa. In addition, the observed concentration of naringenin, quercetin, and kaempferol above 21 mg/kg DM was found. The ergosterol was quantified in the saprobiont fungi cultures. A diversified content of bioactive compounds characterized the tested fungi, and the Chaga (I. obliquus) reported the highest content of tested compounds.

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Section: Discussionsupporting

confidence: 68%

A Bioactive Compounds Profile Present in the Selected Wood Rot

Szwajkowska-Michałek

Stuper‐Szablewska

Krzyżaniak

et al. 2022

Forests

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“…Also, the Folin–Ciocalteu reagent, which has been used for years to determine total phenols, is considered non-specific because several non-phenolic substances such as sugars, ascorbic acids, and amino acids can interfere with TPC measurement [ 54 ]. Numerous reports of I. obliquus phenolic profile confirmed the presence of the following acids: protocatechuic, chlorogenic, caffeic, p-hydroxybenzoic, gallic, vanillic, syringic, and ferulic acids [ 55 , 56 , 57 ]. Chlorogenic acid is found in nature in many plants and fungi.…”

Section: Discussionmentioning

confidence: 99%

The Effect of Green Extraction Technologies on the Chemical Composition of Medicinal Chaga Mushroom Extracts

Lazić,

Klaus,

Kozarski

et al. 2024

JoF

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The mushroom industry should implement green extraction technologies; however, there is not enough information on the differences between these techniques expressed as the chemical composition of the resulting extract. In this study, selected types of green extraction techniques (GETs) were used on Chaga (Inonotus obliquus) (Fr.) Pilát from Serbia (IS) and Mongolia (IM) to examine the differences that would enable the composition-based technology choices in the mushroom supplement industry. Subcritical water extraction (SWE), microwave-assisted (MW) extraction, and ultrasonic-assisted extraction (VAE) were used to prepare the extracts. SWE was performed at two different temperatures (120 and 200 °C), while 96% ethanol, 50% ethanol, and water were used for MW and VAE. The yield, the content of total phenols, total proteins, and carbohydrates, qualitative and quantitative analysis of phenolic compounds, carbohydrates, including α- and β- and total glucans, and fatty acids, were determined in the obtained extracts. SWE resulted in a significantly higher yield, total polysaccharide, and glucan content than any other technique. Glucose was the most dominant monosaccharide in the SWE samples, especially those extracted at 200 °C. The MW 50% EtOH extracts showed the highest yield of total phenols. Among the tested phenolic compounds, chlorogenic acid was the most dominant. SWE can be recommended as the most efficient method for extracting commercially important compounds, especially glucans and phenols.

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