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Assessment of Safety, Effects, and Muscle-Specific Accumulation of Dietary Butylated Hydroxytoluene (BHT) in Paralichthys olivaceus
Abstract
Butylated hydroxytoluene (BHT) is a commonly used antioxidant added to animal/fish feed to limit lipid autoxidation and peroxidation. Although there have been reviews and reports of BHT toxicity in animals, limited information is available with respect to the toxic effects and accumulation of BHT due to oral exposure in aquaculture species. Therefore, 120 days of feeding trial was conducted to evaluate the effects of dietary BHT on the marine fish olive flounder Paralichthys olivaceus. Graded levels of BHT were added to the basal diet in increments of 0, 10, 20, 40, 80, and 160 mg BHT/kg, corresponding to 0 (BHT0), 11 (BHT11), 19 (BHT19), 35 (BHT35), 85 (BHT85), and 121 (BHT121) mg BHT/kg diets, respectively. Fish with an average weight of 77.5 ± 0.3 g ( mean ± SD ) were fed one of the six experimental diets in triplicate groups. Growth performance, feed utilization, and survival rate were not significantly affected by the dietary BHT levels among all experimental groups, whereas BHT concentration in the muscle tissue was found to increase in a dose-dependent manner up to 60 days of the experimental period. Thereafter, BHT accumulation in muscle tissue showed a declining trend among all treatment groups. Furthermore, the whole-body proximate composition, nonspecific immune responses, and hematological parameters (except triglycerides) were not significantly influenced by the dietary levels of BHT. Blood triglyceride content was significantly higher in fish fed the BHT-free diet compared to all other treatment groups. Thus, this study demonstrates that dietary BHT (up to 121 mg/kg) is a safe and effective antioxidant without exhibiting any adverse effects on the growth performance, body composition, and immune responses in the marine fish olive flounder, P. olivaceus.
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“BHT preserves the integrity of myofibrillar structures by preventing the formation of ROS, thereby mitigating the extent of proteolysis and maintaining muscle firmness [77,78].”
From Preservative Potential of Anethum graveolens Essential Oil on Fish Fillet Quality and Shelf Life During Refrigerated Storage (2025) · cites this paper as [77]
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Cited by
Tayel, A., Hassanin, F. S., Edris, S. N., Hamad, A., & Sabeq, I. I. (2025) · Foods · doi:10.3390/foods14091591 · Cited by 7
Metadata
- Authors
- Lee, S., Kim, M.-G., Hur, S.-W., Katya, K., Kim, K.-W., & Lee, B.-J.
- Affiliations
- Aquafeed Research Center, National Institute of Fisheries Science, Pohang 37517, Republic of Korea
- Malaysian Aquaponics Research Center, Semenyih, Kuala Lumpur 43500, Malaysia
- Department of Smart Fisheries Resources, Kongju National University, Yesan 32439, Republic of Korea
- Venue
- Aquaculture Nutrition
- Publisher
- Wiley
- Published
- 2023-02-02
- Volume
- 2023
- Pages
- 1-8
- ISSN
- 1365-2095
- 1353-5773
- PMC
- PMC9973148
- Cited by
- 10
- References
- 0
- Language
- en
- Funders
- National Institute of Fisheries Science (R2023036)
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- Lee, S., Kim, M.-G., Hur, S.-W., Katya, K., Kim, K.-W., & Lee, B.-J. (2023). Assessment of Safety, Effects, and Muscle-Specific Accumulation of Dietary Butylated Hydroxytoluene (BHT) in Paralichthys olivaceus. Aquaculture Nutrition. https://doi.org/10.1155/2023/1381923
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