Replacing fish meal by food waste in feed pellets to culture lower trophic level fish containing acceptable levels of organochlorine pesticides: Health risk assessments

Zhang CHENG, Wing-Yin MO, Yu Bon MAN, Xiang Ping NIE, Kai-Bing LI, Ming Hung WONG

Research output: Contribution to journalArticles

17 Citations (Scopus)

Abstract

The present study used food waste (collected from local hotels and restaurants) feed pellets in polyculture of low-trophic level fish [bighead (Aristichtys nobilis), grass carp (Ctenopharyngodon idellus), and mud carp (Cirrhina molitorella)] aiming at producing safe and quality products for local consumption. The results indicated that grass carp (hexachlorocyclohexanes (HCHs) < 0.03; dichlorodiphenyltrichloroethanes (DDTs) 1.42–3.34 ng/g ww) and bighead carp (HCHs < 0.03; DDTs 1.55–2.56 ng/g ww) fed with food waste feed pellets were relatively free of organochlorine pesticides (OCPs). The experimental ponds (water and sediment) were relatively free of OCPs, lowering the possibility of biomagnification of OCPs in the food chains within the ponds. The raw concentrations of OCPs extracted from the fish were not in the bioavailable form, which would ultimately reach bloodstream and exert adverse effects on human body. Health risk assessments based on digestible concentrations are commonly regarded as a more accurate method. The results of health risk assessments based on raw and digestible concentrations showed that the fish fed with food waste feed pellets were safe for consumption from the OCP perspective. Copyright © 2014 Elsevier B.V.
Original languageEnglish
Pages (from-to)22-27
JournalEnvironmental International
Volume73
Early online date28 Jul 2014
DOIs
Publication statusPublished - Dec 2014

Citation

Cheng, Z., Mo, W.-Y., Man, Y.-B., Nie, X.-P., Li, K.-B., & Wong, M.-H. (2014). Replacing fish meal by food waste in feed pellets to culture lower trophic level fish containing acceptable levels of organochlorine pesticides: Health risk assessments. Environmental International, 73, 22-27. doi: 10.1016/j.envint.2014.07.001

Keywords

  • Food waste
  • Fresh water fish
  • Bioaccumulation
  • OCPs
  • Health risks

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