The characteristics of PUFAs-rich virgin fish oil as affected by size of tuna eye

Abstract

Abstract. Trilaksani W, Riyanto B, Ramadhan W, Sinulingga F, Fauziah S. 2023. The characteristics of PUFAs-rich virgin fish oil as affected by size of tuna eye. Biodiversitas 24: 6545-6556. The food supplement market expects growth in demand for long-chain omega-3 fatty acids, particularly Eicosapentaenoic Acid (EPA) and Docosahexaenoic Acid (DHA), which play crucial for brain development and can lower the chances of health issues like depression, Myocardial Infarction (MI), thromboembolism, and cardiac arrhythmias, and have anti-viral effects, boosting the immune system during the pandemic. Therefore, to meet this demand, exploring new sources is crucial. Tuna eyes have emerged as a potential source of DHA; however, quality and standardized sizes pose a challenge as they are by-products. The purpose of this research was to determine how the eye size of tuna affected the quality and yield of fish oil, which is a novel source of omega-3 fatty acids. This study determined the virgin oil profile of tuna eyes, which met the quality standards. The investigation covered morphology, chemical composition, heavy metal content, oil yield and quality, fatty acid composition, and related health lipid indices (Atherogenicity Index (AI) and Thrombogenicity Index (TI)). For the size specifications, tuna eyes were classified into three groups based on their diameter, namely 'small' (<6 cm), 'medium' (6-9 cm), and 'large' (>9 cm). The results showed that eye size directly influenced the weight, fat content, and oil yield, with negligible disparity in chemical composition except for the fat content; the larger the eyes, the higher the oil yield. Tuna eye oil had a safe composition for consumption with low or undetected heavy metals, the oil's oxidative level met CODEX standards, and the fatty acid profile revealed DHA as the most abundant fatty acid, reaching 36.95%. The predominance of n-3 series values in the fatty acid composition of tuna's eye was 9-12 times greater than that of n-6 fatty acid values. The values of AI and TI were 0.33 and 0.12; 0.47 and 0.20; 0.55 and 0.20 for large, small, and medium eyes, respectively. The study highlights tuna eyes' unique characteristics and potential applications in the food supplement industry.

Efektivitas jenis adsorben pada pemurnian bertingkat minyak mata tuna kaya DHA

“…Rerata bobot mata tuna 85,24±4,27 g dan diameternya 5,65±0,49 cm. Bagian-bagian lain dari mata tuna memiliki rata-rata berikut: sklera 5,20±0,68 g; vitreous humor 23,73±5,48 g; dan lensa 2,73±0,53 g. Trilaksani et al (2023) menggunakan mata tuna dengan spesifikasi bobot mata 126,25 g dan diameter 6,56 cm. Organoleptik mata tuna dilakukan dengan mengamati ketampakan mata menggunakan panelis sebanyak 30 orang mengacu SNI 2729:2013 tentang ikan segar.…”

Karakteristik fisikokimia tablet berbasis mikrokapsul minyak mata tuna dan spirulina

“…Promo Indo Ikan, Bali. Rerata bobot mata tuna yang digunakan sebesar 126,25 g dengan diameter 6,56 cm total dan otot daging sebesar 27,17 g sehingga tergolong mata sedang (Trilaksani et al, 2023). Preparasi mata tuna dilakukan dengan mengambil otot daging di seluruh bagian mata tuna, dihancurkan menggunakan food processor (Panasonic MK-5086M) hingga menjadi pasta, diekstraksi menggunakan sentrifugasi highspeed refrigerated centrifuge (Himac CR 21G)/ (10.000 rpm, 30 menit, 4 o C).…”