Serratore Patrizia, Bignami Giorgia, Ostanello Fabio, Lorito Luna
Department of Veterinary Medical Science, University of Bologna, Viale A. Vespucci 2, 47042 Cesenatico, FC, Italy.
Foods. 2021 Oct 25;10(11):2574. doi: 10.3390/foods10112574.
is a carrion-feeder edible marine gastropod with an open circulatory system. Therefore, biological, and chemical contaminants associated with the feed can reach all body tissues. The aim of the present study was to investigate the possible association of these characteristics with some food safety hazards. spp. load, and the prevalence of pathogenic , , and , were investigated. Moreover, biogenic amines (BAs) and indole-producing bacteria (IPB), markers of seafood decomposition, were quantified for the first time in an edible carrion-feeder. Overall, 49 batches were analyzed (38 from retail, and 11 from primary production). The spp. load resulted of 5.64 ± 0.69 log CFU g at retail, and 5.27 ± 0.74 at harvest but all batches resulted negative for pathogenic . Histamine, putrescine, cadaverine, and tyramine were detected both at harvest and at the retail level. Their sum (BAs Index) showed a mean value of 50.45 and 65.83 mg Kg in batches at harvest and at retail, respectively. IPB were detected at harvest and upon refrigeration for three days (T1-T3). The mean load resulted in 2.52 ± 0.85 log MPN g at T0, 3.31 ± 1.23 at T3 in batches immediately refrigerated, and 3.22 ± 1.18 at T3 in batches previously immersed in clean seawater. Our results contribute to identifying food-borne hazards for that may be related to the retention of biogenic amines and indole-producing bacteria due to carrion feeding.
是一种以腐肉为食的可食用海洋腹足纲动物，具有开放式循环系统。因此，与饲料相关的生物和化学污染物可到达其所有身体组织。本研究的目的是调查这些特征与一些食品安全危害之间可能存在的关联。研究了[物种名称]的负荷以及致病性[具体病菌名称1]、[具体病菌名称2]和[具体病菌名称3]的流行情况。此外，还首次对一种可食用的食腐动物体内的生物胺（BAs）和产吲哚细菌（IPB）（海鲜分解的标志物）进行了定量分析。总体而言，共分析了49批样本（38批来自零售，11批来自初级生产）。零售批次中[物种名称]的负荷为5.64±0.69 log CFU/g，收获时为5.27±0.74 log CFU/g，但所有批次的致病性[具体病菌名称]检测结果均为阴性。在收获时和零售阶段均检测到组胺、腐胺、尸胺和酪胺。它们的总和（生物胺指数）在收获批次和零售批次中的平均值分别为50.45和65.83 mg/Kg。在收获时以及冷藏三天后（T1 - T3）检测到了产吲哚细菌。立即冷藏的批次在T0时的平均负荷为2.52±0.85 log MPN/g，T3时为3.31±1.23 log MPN/g，而之前浸泡在清洁海水中的批次在T3时为3.22±1.18 log MPN/g。我们的研究结果有助于确定[该动物名称]可能存在的食源性危害，这些危害可能与因食腐习性导致的生物胺和产吲哚细菌的留存有关。
