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Preventing discoloration and lipid oxidation in dark muscle of yellowtail by feeding an extract prepared from mushroom (Flammulina velutipes) cultured medium
Aquaculture (2009)
  • Huynh Nguyen Duy Bao
  • Yoichi Shinomiya
  • Hiroaki Ikeda
  • Toshiaki Ohshima
Abstract

A hydrophilic extract prepared from waste medium from mushroom (Flammulina velutipes) cultivation contained ergothioneine (ESH) at a concentration of 340 mg/L (= 48 mg/kg of solid medium). The content of ESH in the extract at which 50% of the DPPH radical was scavenged was 0.3 μg. Effects of the extract on color stability and lipid oxidation in dark muscle of yellowtail (Seriola quinqueradiata) during chilled storage for 4 days were evaluated by feeding the extract to the fish as a supplement. There was no mortality during the 4-week feeding period, and the fish grew normally. Browning development in dark muscle of yellowtail fed diets containing 1% and 10% of the extract was remarkably suppressed during 4 days of storage at 0–2 °C. These results clearly showed that the extract is a promising source of natural antioxidants that can be used in aquaculture to improve the quality of fish meat during post-harvest storage at lower temperatures.

Keywords
  • Mushroom (Flammulina velutipes); Yellowtail (Seriola quinqueradiata); Ergothioneine; Discoloration; Metmyoglobin; Lipid oxidation
Disciplines
Publication Date
October 16, 2009
Citation Information
Huynh Nguyen Duy Bao, Yoichi Shinomiya, Hiroaki Ikeda and Toshiaki Ohshima. "Preventing discoloration and lipid oxidation in dark muscle of yellowtail by feeding an extract prepared from mushroom (Flammulina velutipes) cultured medium" Aquaculture Vol. 295 Iss. 3-4 (2009)
Available at: http://works.bepress.com/huynh_nguyen_duy_bao/6/