Antioxidant Capacity of Fresh and Processed Fruit Bodies and Mycelium of Auricularia auricula-judae (Fr.) Quél

Abstract

Auricularia auricula-judae is currently grown in Malaysia. In the present study, the methanolic extracts from fruit bodies (fresh, oven-dried, and freeze-dried) and mycelium of A. auricula-judae were evaluated for their antioxidant capacities based on 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging activity and ferric reducing antioxidant power (FRAP) assay. The total phenolic content in the extracts were also measured. The extract of freeze-dried fruit bodies of A. auricula-judae had potent DPPH free radical scavenging activity with a 50% effective concentration of 2.87 mg/mL, whereas the FRAP value of A. auricula-judae mycelium was 5.22 micromol of FeSO(4).7H(2)O equivalents/g of mycelium sample. Further, a positive correlation (R(2) = 0.7668) between FRAP level of A. auricula-judae extracts and the total phenolic contents was observed. Thus the method of processing of fresh fruit bodies had an effect on the antioxidant potential of A. auricula-judae.

Compton Scattering by Internal Shields Based on Melanin-Containing Mushrooms Provides Protection of Gastrointestinal Tract from Ionizing Radiation

“…The radical scavenging activity of a sample can be measured as a decolorizing effect following the trapping of the unpaired electron of DPPH. 9 There was no difference in soluble antioxidant content between black and white mushrooms (Fig. 2F, G).…”

“…7 The antioxidant capacity of methanol extracts from black and white mushrooms in 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay was measured as in. 9 In vivo fluorescent imaging All animal studies were carried out in accordance with the guidelines of the Animal Care and Use Committee. Six-to eight-week-old CD-1 female mice (Charles River Breeding Laboratories, Portage, MI) were used in all experiments.…”

Antioxidant Activities and Inhibitory Effects of <i>Auricularia Auricular</i> and Its Functional Formula Diet Against Vascular Smooth Muscle Cell <i>in Vitro</i>

“…Due to the inconsistency of many radical system used for antioxidant evaluation, it is widely suggested that at least two different methods should be applied to investigate the radical-scavenging capacities of selected antioxidant or a food system [16]. Because of the importance of antioxidant capacity in the prevention of atherosclerosis, the hydroxyl and superoxide anion radical systems were adopted to investigate the antioxidant effects of AHP functional diet.…”

Comparative analysis on the diversity of Auricularia auricula-judae by physiological characteristics, somatic incompatibility and TRAP fingerprinting

“…In recent years, A. auricula-judae has been reported to have the functions of lowering blood cholesterol and triglycerides (Chen et al 2008), preventing strokes and heart attacks , and effective in treating diabetes ) and certain cancers (Ma et al 2010). It also exhibits antioxidant activities (Kho et al 2009). Therefore, A. auricula-judae enjoys popular favor in Europe, America, Japan, Korea, Malaysia, Indonesia and Thailand.…”