用阻抗法评价双壳类软体动物的大肠杆菌污染:与最可能数分析的比较及其与环境参数的相关性。

IF 1.8 Q3 FOOD SCIENCE & TECHNOLOGY Italian Journal of Food Safety Pub Date : 2023-06-08 DOI:10.4081/ijfs.2023.11103
Sarah Currò, Luca Fasolato, Stefania Balzan, Giacomo Biziato, Francesco Paesanti, Luca Bargelloni, Barbara Cardazzo, Enrico Novelli
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引用次数: 0

摘要

经过13个月的观察,对电化学(阻抗)工具监测贝类中大肠杆菌污染的应用进行了评价。本研究的主要目的是比较来自意大利威尼托-埃米利亚海岸(Veneto-Emilian)五个采样区(118个样本)的未净化双壳类软体动物(BM)中大肠杆菌污染(log MPN/100 g)的标准最可能数(MPN)和μ-trac 4200 (log MPN/100 g)。第二个目的是在大数据集上评估BM中大肠杆菌浓度与环境因素之间的相关性(690)。两种方法的Pearson和Spearman系数分别为0.60和0.69;P0.01)。McNemar试验表明两种方法之间的样本分类相似,阻抗法高估了污染最严重的类别(P=0.03;> 4600 MPN/100 g)。结果强调了阻抗法的适用性,特别是在蛤蜊中进行快速评估和常规使用,而在贻贝中似乎不太有效。通过多元置换方差分析和多项逻辑回归建立不同的模型,选择适合预测大肠杆菌载量的环境特征。总体而言,盐度和季节影响大肠杆菌污染,而局部主要受水文和盐度影响。阻抗法与环境数据分析相结合的应用可以帮助净化阶段管理遵守法律限制,并且可以代表地方控制当局确定行动的优势,考虑到极端气象事件的影响是对气候变化的积极反应。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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Evaluating Escherichia coli contamination in bivalve mollusks using the impedance method: a comparison with most probable number analyses and correlation with environmental parameters.

The application of an electrochemical (impedance) tool for monitoring Escherichia coli contamination in shellfish was evaluated after 13 months of observation. The primary aim of the present study was to compare the standard most probable number (MPN) and μ-trac 4200 (log imped/100 g) for the assessment of E. coli contamination (log MPN/100 g) in non-depurated bivalve mollusks (BM) from five sampling areas of the Veneto-Emilian coast (Italy) (118 samples). The secondary aim was to evaluate the correlation between E. coli concentrations in BM and environmental factors on a large data set (690). The methods showed a moderate, positive correlation (0.60 and 0.69 Pearson and Spearman coefficients, respectively; P<0.01) in Ruditapes philippinarum. The McNemar test indicated analogous sample classification between methods, and the impedance method overestimated the most contaminated class (P=0.03; >4,600 MPN/100 g). The results highlighted the suitability of the impedance method for a faster evaluation and routine use especially in clams, while in Mytilus it seemed less effective. Different models built by multivariate permutational variance analysis and multinomial logistic regression selected the suitable environmental features able to predict the E. coli load. Overall, salinity and season affected the E. coli contamination, whereas locally it was mainly influenced by hydrometry and salinity. The application of the impedance method coupled with environmental data analysis could help purification phase management to adhere to legal limits and could represent an advantage for local control authorities to define actions, considering extreme meteorological events' effects as a proactive reaction to climate change.

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来源期刊
Italian Journal of Food Safety
Italian Journal of Food Safety FOOD SCIENCE & TECHNOLOGY-
CiteScore
2.50
自引率
0.00%
发文量
37
审稿时长
10 weeks
期刊介绍: The Journal of Food Safety (IJFS) is the official journal of the Italian Association of Veterinary Food Hygienists (AIVI). The Journal addresses veterinary food hygienists, specialists in the food industry and experts offering technical support and advice on food of animal origin. The Journal of Food Safety publishes original research papers concerning food safety and hygiene, animal health, zoonoses and food safety, food safety economics. Reviews, editorials, technical reports, brief notes, conference proceedings, letters to the Editor, book reviews are also welcome. Every article published in the Journal will be peer-reviewed by experts in the field and selected by members of the editorial board. The publication of manuscripts is subject to the approval of the Editor who has knowledge of the field discussed in the manuscript in accordance with the principles of Peer Review; referees will be selected from the Editorial Board or among qualified scientists of the international scientific community. Articles must be written in English and must adhere to the guidelines and details contained in the Instructions to Authors.
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