Tulli Francesca, Moreno-Rojas José M, Messina Concetta Maria, Trocino Angela, Xiccato Gerolamo, Muñoz-Redondo José M, Santulli Andrea, Tibaldi Emilio
Department of Agriculture, Food, Environment and Animal Sciences, University of Udine, Via Sondrio 2, 33100 Udine, Italy.
Department of Food Science and Health, Andalusian Institute of Agricultural and Fisheries Research and Training (IFAPA), Alameda del Obispo Centre, Avda. Menendez Pidal, s/n, 14004 Córdoba, Spain.
Animals (Basel). 2020 Nov 5;10(11):2042. doi: 10.3390/ani10112042.
This study aimed to determine whether isotopic ratio mass spectrometry (IRMS) can discriminate farmed European sea bass according to different farming systems and geographic origins. of commercial size from three different rearing systems (concrete tank inland, sea cages, and extensive methods in valleys or salt works) were collected at the trading period (autumn-winter). For each farming type, different locations spread over Italy were monitored. Once the fish were harvested, the muscle and feed were sampled. For both muscle and feed, δC and δN were measured by continuous flow elemental analyzer isotope ratio mass spectrometry (CF-EA-IRMS) with the goal of discriminating samples based on the rearing system. Additional δH and δO measurements of fish samples were performed by continuous flow total combustion elemental analyzer isotope ratio mass spectrometry (CF-TC/EA-IRMS) to track the geographical origin. The measurements of δC and δN made it possible to discriminate cultured sea bass from different farming systems (extensive vs. intensive) reared at different geographical sites in Italy. Additional information was obtained from δO and δH, which enabled the geographical areas of origin of the sea bass farmed extensively and intensively (in cages) to be distinguished.
本研究旨在确定同位素比率质谱法（IRMS）是否能够根据不同的养殖系统和地理来源区分养殖的欧洲海鲈。在交易期（秋冬）收集了来自三种不同养殖系统（内陆混凝土池、海水网箱以及山谷或盐场的粗放式养殖）的商业规格的海鲈。对于每种养殖类型，监测了意大利各地不同的地点。鱼收获后，采集肌肉和饲料样本。对于肌肉和饲料，通过连续流动元素分析仪同位素比率质谱法（CF-EA-IRMS）测量δC和δN，目的是基于养殖系统区分样本。通过连续流动全燃烧元素分析仪同位素比率质谱法（CF-TC/EA-IRMS）对鱼样本进行额外的δH和δO测量，以追踪地理来源。δC和δN的测量使得区分在意大利不同地理地点养殖的不同养殖系统（粗放式与集约化）的养殖海鲈成为可能。从δO和δH获得了额外信息，这使得能够区分粗放式和集约化（网箱养殖）养殖的海鲈的地理起源区域。
