Abstract
Separation of crude oil from precooked and non-precooked skipjack tuna heads by a wet reduction method was carried out. Both heating temperature and time affected the separation and oil quality. Optimum conditions for separation of crude oil involved heating samples at 85°C for 30 min, followed by pressing at 140 tons/m2 using a hydraulic press. Yields of crude oil prepared from precooked and non-precooked samples were 2.8 and 4.8%, respectively. Crude oil obtained from non-precooked samples showed markedly higher quality than that from precooked samples. Crude oil from precooked samples had a higher peroxide value and much darker colour than that from non-precooked samples. However, crude oil from precooked samples had higher DHA (25.5%) than that from non-precooked samples (18.8%). (C) 2000 Elsevier Science Ltd.
| Original language | English |
|---|---|
| Pages (from-to) | 289-294 |
| Number of pages | 6 |
| Journal | Food Chemistry |
| Volume | 69 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 15 May 2000 |
| Externally published | Yes |
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