壳聚糖辅助香芹精油处理虹鳟鱼特性研究。
An investigation on characteristics of rainbow trout coated using chitosan assisted with thyme essential oil.
机构信息
Seafood Division of Fisheries Department, Gorgan University of Agricultural Sciences and Natural Resources, Iran.
出版信息
Int J Biol Macromol. 2012 Apr 1;50(3):540-4. doi: 10.1016/j.ijbiomac.2012.01.016. Epub 2012 Jan 25.
Our study aimed to determine the nutritional, textural and sensorial characteristics of butterfly-shaped rainbow trout which is coated by using enriched chitosan with thyme EO during 15 days of refrigerated storage (5±1 °C). The treatments were Cs (chitosan; 2%, w/v), Cs+T (chitosan; 2%, w/v and Thymus vulgaris EO; 1%, v/v) and C (uncoated control samples). The composition of the EO was investigated by GC/MS. Generally, the EO was found to be rich in the active monoterpene phenols (thymol and carvacrol) and their corresponding monoterpene hydrocarbon precursors such as γ-terpinene and the oxygenated monoterpenes such as linalool. Nineteen constituent out of 116, representing 86.79% of the EO were identified, of which the major ones were thymol (3.63%), carvacrol (21.89%), γ-terpinen (2.05%), and linalool (9.04%). Furthermore, textural and sensorial analyses were performed. Our results demonstrated chitosan coating helped with thyme EO made no unfavorable change in taste. Also it can enhance nutritional, textural and sensorial characteristics of butterfly-shaped rainbow trout during 15 days of refrigerated storage.
本研究旨在确定经过 15 天冷藏（5±1°C）后，用富含迷迭香精油的壳聚糖对蝴蝶形虹鳟鱼进行涂层处理后的营养、质地和感官特性。处理方法为 Cs（壳聚糖；2%，w/v）、Cs+T（壳聚糖；2%，w/v 和百里香精油；1%，v/v）和 C（未涂层对照样品）。用 GC/MS 研究了精油的成分。总的来说，精油富含活性单萜酚（百里香酚和香芹酚）及其相应的单萜烃前体，如γ-萜品烯和含氧单萜，如芳樟醇。在 116 种成分中，有 19 种（占精油的 86.79%）被鉴定出来，其中主要的成分是百里香酚（3.63%）、香芹酚（21.89%）、γ-萜品烯（2.05%）和芳樟醇（9.04%）。此外，还进行了质地和感官分析。我们的结果表明，壳聚糖涂层有助于百里香精油的使用，不会对味道产生不利影响。此外，它可以在 15 天的冷藏过程中提高蝴蝶形虹鳟鱼的营养、质地和感官特性。
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