碩士 / 輔仁大學 / 食品營養學系 / 82 / The dried salted mullet roe from cultured source browned
during storage faster than that from wild source. The study
was to investigate the effects of modified atmosphere
packaging on the quality and storage stability of mullet roe
product. Samples were packed in an aluminum laminated pouch
or nylon laminated pouch filled with N2 and 0, 20 or 50 %
O2 respectively, and exposed to 1,000 lux fluorescent light at
5℃ for 8 weeks. The samples in oxygen filled packages showed
that L-value reduced and △E-value increased, unsaturated
fatty acids reduced, conjugated diene, triene and
carbonyl oxidative products increased comparing with the
ones in nitrogen filled packages. More severe browning and
lipid oxidation were found in the samples with oxygen than
without oxygen. It was also observed that light
accelerated browning and lipid oxidation in the study.
Oxygen could inhibit the reduction of TMAO and reduce the
amount of amino compounds, but it caused serious lipid
oxidation to produce a large amount of carbonyl
compounds, so enhanced browning. Carbonyl compounds
might play an important role on the browning reaction
in mullet roe. Therefore, the more serious lipid
oxidation, the more serious browning in mullet roe occured.
Oxygen reduced the contents of carotenoids, so caused
discoloration of mullet roe. From the data of physical
and chemical analyses and also sensory evaluation, it
was revealed that L value, △E and carbonyl value could
be used as indicators for the quality of mullet roe. The
trends of color and the degree of lipid oxidation of wild
mullet roe were similar to those of cultured mullet roe. The pH
values of wild mullet roe were lower than cultured mullet roe.
The conclusion of this study suggested that mullet roe
could be packaged in an aluminum laminated pouch with
nitrogen filled to maintain its quality.
| Identifer | oai:union.ndltd.org:TW/082FJU00255006 |
| Date | January 1994 |
| Creators | Chuang, Kuo Hung, 莊國宏 |
| Contributors | Chingmin E. Tsai, 蔡敬民 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 100 |
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