Research Article

Determination of lipid quality and mercury levels of sardine and rainbow trout cooked with different methods

Volume: 40 Number: 3 September 15, 2023
TR EN

Determination of lipid quality and mercury levels of sardine and rainbow trout cooked with different methods

Abstract

This study aimed to investigate the effects of baking and pan-frying methods on the lipid quality and mercury (Hg) levels of two important fish species in Türkiye, namely, fileted sardine (Sardina pilchardus) and rainbow trout (Oncorhynchus mykiss). The results revealed that sardines significantly decreased n-3 fatty acids depending on the cooking process, while the best n-6/n-3 ratio was observed in baked sardines, with higher rates found in pan-fried fish. Notably, pan-fried rainbow trout cooked with butter showed the highest Atherogenic index (AI) of 0.71±0.32 and Thrombogenic index (TI) of 0.61±1.43, as well as a hypocholesterolemic/hypercholesterolemic index (HH) of 0.79 ± 0.17. Conversely, fried sardines exhibited lower Atherogenic and Thrombogenic scores, with fried sardines cooked in sunflower oil having a hypocholesterolemic/hypercholesterolemic index of 4.85 ± 0.3. There were no significant variations in Hg content between raw and cooked fish. However, when compared to the raw control, the rise in Hg content for baked fish was substantial (p < 0.05) (baked rainbow trout 0.18 mg/kg and sardine 0.29 mg/kg). The decrease in FAs (Fatty Acids) due to cooking methods can be ordered as follows: Raw sardine > baked > fried. Conversely, the increase in FAs due to the cooking methods can be ordered as follows: fried > baked > raw sardine. Baked rainbow trout had much lower levels of palmitic acid, stearic acid, and myristic acid than the raw material. However, these levels were significantly increased in rainbow trout cooked in a frying pan. Additionally, oleic acid levels in fried rainbow trout were detected to be lower than in other preparations, whereas they were equivalent in baked rainbow trout.

Keywords

Supporting Institution

Ege University Scientific Research Projects Coordination Unit.

Project Number

FGA-2018-20293

Thanks

Ege University SRPCU funding this investigation. Project Number: FGA-2018-20293

References

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Details

Primary Language

English

Subjects

Food Engineering

Journal Section

Research Article

Early Pub Date

September 3, 2023

Publication Date

September 15, 2023

Submission Date

January 13, 2023

Acceptance Date

August 9, 2023

Published in Issue

Year 2023 Volume: 40 Number: 3

APA
Çaklı, Ş., Demirtaş Erol, N., Şen Yılmaz, E. B., Baldemir, P., & Çaklı, A. (2023). Determination of lipid quality and mercury levels of sardine and rainbow trout cooked with different methods. Ege Journal of Fisheries and Aquatic Sciences, 40(3), 182-188. https://doi.org/10.12714/egejfas.40.3.04

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