Storage stability and quality of polyunsaturated fatty acid rich oil fraction from Longtail tuna (Thunnus tonggol) head using supercritical extraction

Long‐term stability of blends of sesame oil or soybean oil with tuna oil under daily use conditions

“…For all formulas, the content of DHA/EPA decreased by less than 10% at 4°C during the test period; however, the loss of DHA/EPA was exacerbated to about 20% for S2 and S3 at rt . The variation in DHA/EPA content was similar to that reported in previous studies on sealed fish oil (Aidos et al, 2010; Sahena et al, 2014). The proportions of n6 and n3 PUFAs were 6:1, 7.5:1, and 4:1 for S1 , S2 , and S3 , respectively.…”

“…S1: 80% sesame oil + 20% tuna oil; S2: 90% soybean oil + 8% sesame oil + 2% tuna oil; S3: 98% soybean oil + 2% tuna oil + 1000 ppm MT 90) the loss of DHA/EPA was exacerbated to about 20% for S2 and S3 at rt. The variation in DHA/EPA content was similar to that reported in previous studies on sealed fish oil (Aidos et al, 2010;Sahena et al, 2014). The proportions of n6 and n3 PUFAs were 6:1, 7.5:1, and 4:1 for S1, S2, and S3, respectively.…”

“…Other research conducted on unrefined, sealed herring oil with 0.1% moisture also recorded a narrow variation in AV from 1.2 mg KOH/kg to 1.5 mg KOH/kg in 160 days at both 0 and 50°C (Aidos et al, 2010). The study by Sahena et al (2014) on sealed unrefined tuna oil (initial AV 1.36 mg KOH/kg, 0.8%–1.2% moisture), stored at 4°C showed an increased AV to 5.56 mg KOH/kg after 60 days, while the AV of fresh garfish oil increased from 3.25 mg KOH/kg to 14.09 mg KOH/kg in 150 days at 4°C (Velasco et al, 2004). The default moisture and AV of refined tuna oil used in this study is 0.02% and 0.13 mg KOH/kg, respectively.…”

Effect of ultrasonic thawing on the water‐holding capacity, physicochemical properties and structure of frozen tuna (Thunnus tonggol) myofibrillar proteins

“…This fish is one of the most economically important species of tuna because of its high commercial value. Thunnus tonggol is the second smallest among the eight species in the genus Thunnus and is found in the North Pacific Ocean and Indian Ocean …”

“…Thunnus tonggol is the second smallest among the eight species in the genus Thunnus and is found in the North Pacific Ocean and Indian Ocean. 1,2 It is more popular in Middle Eastern countries, and especially in countries such as Japan, Korea and the USA. 3 Thunnus tonggol is rich in polyunsaturated fatty acids (PUFA) and contains high concentrations of docosahexaenoic acid (DHA: C22: 6n-3) and eicosapentaenoic acid (EPA: C20: 5n-3.…”