中文摘要：研究分析了鲜活鸟蛤闭壳肌在整个货架期（采后冷冻7天）的脂肪酸动力学。结果表明，采后3天内，闭壳肌的脂肪酸浓度保持稳定，此后闭壳肌脂肪酸含量出现变化，即十七（烷）酸（17:0）的比例变高。十七（烷）酸与导致食物腐败的病原菌的生长有关。因此，鲜活鸟蛤闭壳肌中脂肪酸含量可作为追溯采后3天内或冷冻情况下货架期内任何时段鸟蛤来源的可靠指标。
外文摘要：Cockles (Cerastoderma edule) are commercially important bivalves that support several fisheries in European waters. The fatty acid (FA) profile of the adductor muscle (AM) of freshly collected live cockles can be used to reliably confirm their geographic origin. This approach is paramount for traceability, expose fraud and ensure *food* safety. However, no study has ever addressed if the FA profile of the AM of live cockles remains stable during shelf-life, as significant shifts may blur FA signatures recorded at harvest. The present study investigated the FA dynamics of the AM of live cockles during their shelf-life (seven days post-harvest under a refrigerated environment). Fatty acid methyl esters were obtained after transesterification of lipid extracts and analyzed through gas chromatography mass spectrometry (GC-MS). Results indicated that FA profiles remained stable until the third day post-harvest. After this period cockles started to exhibit contrasting FA profiles on their AM, namely a higher percentage of heptadecanoic acid (17:0). This FA is associated with the growth of pathogenic microorganisms responsible for *food* spoilage. In this way, the FA, profile of the AM of live cockles can be used to reliably trace geographic origin up to three days post-harvest, as long as specimens are stored under refrigerated conditions during shelf-life.
外文关键词：Bacterial lipid markers； Bivalves； Food safety； Spoilage
作者：Ricardo, F; Pimentel, T; Maciel, E; Moreira, ASP; Domingues, MR; Calado, R
作者单位：阿威罗大学
期刊名称：FOOD CONTROL
期刊影响因子：3.388
出版年份：2017
出版刊次：7
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