碩士 / 國立臺灣海洋大學 / 食品科學系 / 95 / This study was carried out to understand the effects of powder-mixture feed (PM) and particle-floating feed (PF) diets and growth on chemical composition and quality of cultured eel (Anguilla japonica). The condition factor, body mass index (BMI), and hepatosomatic index of PM raised eels were higher than those of PF eels. PM eels had higher lipid content with lower moisture content. These differences became less with growing time of eels. The fat content showed a negative correlation with moisture. The composition and contents of free amino acids showed no marked difference between both eels, and there are much in taruine, glycine, lysine, histidine and alanine. Eels were rich in carnosine (ß-alanyl-L-histidine), but anserine (ß-alanyl-1-methylhistidine) was not detected. The composition and contents of ATP-related compounds showed no marked difference between both eels. IMP, inosine and hypoxanthine were the major compounds, and they showed no significant changes with growth period. According to the results of color difference measurment, PM eels had a significantly higher L value and lower a and b values. Sensory evaluation showed PM eels had higher scores of acceptability than PF eels. The texture of PF eel meat is softer than that of PM, but it is difficult to differentiate by panels after seasoning of eel meat.
| Identifer | oai:union.ndltd.org:TW/095NTOU5253056 |
| Date | January 2007 |
| Creators | Pei-Ying Shen, 沈佩穎 |
| Contributors | Chyuan-Yuan Shiau, Ph. D., 蕭泉源 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 108 |
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