Hygiene of fish feed. ll. Effect of gamma radiation and butylated hydroxyanisole on the chemical composition and lipid oxidation of fish feed

어류양식용 사료의 위생화. II. 어류양식용 사료의 조성분과 지방산화에 대한 방사선 조사 및 butylated hydroxyanisole의 효과

  • Kim, Se-ra (College of Veterinary Medicine, Chonnam National University) ;
  • Oh, Heon (College of Veterinary Medicine, Chonnam National University) ;
  • Lee, Hae-june (College of Veterinary Medicine, Chonnam National University) ;
  • Lee, Jong-hwan (College of Veterinary Medicine, Chonnam National University) ;
  • Jo, Sung-kee (Food Irradiation Team, KAERI) ;
  • Byun, Myung-woo (Food Irradiation Team, KAERI) ;
  • Kim, Sung-ho (College of Veterinary Medicine, Chonnam National University)
  • 김세라 (전남대학교 수의과대학) ;
  • 오헌 (전남대학교 수의과대학) ;
  • 이해준 (전남대학교 수의과대학) ;
  • 이종환 (전남대학교 수의과대학) ;
  • 조성기 (한국원자력연구소 방사선식품공학팀) ;
  • 변명우 (한국원자력연구소 방사선식품공학팀) ;
  • 김성호 (전남대학교 수의과대학)
  • Accepted : 2001.06.14
  • Published : 2001.09.25

Abstract

The chemical composition of fish feeds(mackerel, gizzard shad, shrimp and formula feed) were analyzed and compared with those of untreated and irradiated (5 kGy) feeds, and the effects of gamma irradiation (5 kGy) and butylated hydroxyanisole (BHA, 200ppm) on feeds spoilage were investigated by determination of thiobarbituric acid (TBA) value and peroxide value for 14 days at $20^{\circ}C$, $4^{\circ}C$ or $-20^{\circ}C$. Crude protein, crude lipid, crude fiber, crude ash and nitrogen free extract were not significantly changed by gamma irradiation with the dose of 5 kGy. Immediately gamma irradiation increased the initiative oxidation of feeds as expected. But BHA was found to be greatly effective in minimizing the radiation-induced peroxidation (p<0.05). The TBA value and peroxide value increased with the elapse of the storage period. The level of lipid oxidation was increased depending on the rise in storage temperature. But the additions of BHA inhibited the lipid oxidation (p<0.05).