碩士 / 國立宜蘭大學 / 食品科學系碩士班 / 100 / Mackerel oil contains a wealth of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), signifying their high nutritional quality for human nutrition. In this study, used physical refining methods refined mackerel cooking juice oil to replace the traditional chemical refining methods and made refined mackerel fish oil to conform with the consumption criteria. The purpose is that removed mackerel fish oil peroxides, free fatty acids fishlike smell and as much as possible to retain their EPA and DHA. This study, took centrifugal mackerel oil washed by different washing conditions and selected the best effectiveness washing condition of all washing groups, then compared two parts of experiments. The first one is used physical methods adsorb mackerel fish oil by magnesol, silica gel and activated carbon. Another one do the different vaccum steam distillation temperature experiment on vaccum degree 8 torr and vaccum steam distillation time is 2 hours. The process of refining mackerel oil, monitoring the following factors: peroxide values, acid values, EPA and DHA contents. The results indicate, in the washing process, distilled water washing treatment had better effectiveness than other washing solutions, the peroxide value of 33.76 meq/kg oil dropped to 25.68 meq/kg oil, acid value from 1.76 mg KOH/g oil dropped to 1.38 mg KOH/g oil, EPA and DHA retention rate were 84.18% and 98.33%, respectively. Then take mackerel oil after distilled water washing, discuss adsorption conditions, Magnesol®XL treatment had better effort, the peroxide value dropped to 3.90 meq/kg oil and acid value dropped to 0.69 mg KOH/g oil, the retention rate of EPA and DHA were 89.63% and 89.45%, respectively. On the other hand, the vacuum steam distillation of 200℃ treatment group had a lower peroxide value of 2.00 meq/kg oil and acid value 0.63 mg KOH/g oil than other temperature treatments. There is worth noting that this condition loss more EPA and DHA, loss percentage were 15.59% and 17.03% , respectively.
| Identifer | oai:union.ndltd.org:TW/100NIU00253001 |
| Date | January 2012 |
| Creators | Chen. Wanjing, 陳婉菁 |
| Contributors | Chiu, Emean, 邱一鳴 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 107 |
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