进口黑胡椒和芝麻中污染情况的评估以及伽马射线辐照对沙门氏菌的灭活作用
Assessment of contamination of in imported black pepper and sesame seed and salmonella inactivation by gamma irradiation.
作者信息
D'Oca Maria Cristina, Di Noto Anna Maria, Bartolotta Antonio, Parlato Aldo, Nicastro Luisa, Sciortino Sonia, Cardamone Cinzia
机构信息
Department of Physics and Chemistry, University of Palermo.
Experimental Zooprophylactic Institute of Palermo "A. Mirri".
出版信息
Ital J Food Saf. 2021 Apr 7;10(1):8914. doi: 10.4081/ijfs.2021.8914. eCollection 2021 Mar 11.
Abstract
This study shows the frequency of seeds samples contaminated by spp. collected randomly from local markets; on 30 black pepper sample no contaminated sample was found while spp. was detected in 3 of 36 (8.3%) analyzed sesame samples; three different serotypes were identified: Montevideo, Stanleyville e Tilene. The efficacy of gamma irradiation to inactivate Montevideo in black pepper and sesame irradiated between 1 and 5 kGy was evaluated. 3 kGy is sufficient to reduce of 3-4 log CFU/g; whereas 5 kGy have been need to reduce 5.5-6 log CFU/g for samples of black pepper and sesame. No statistically significant differences were found between black pepper and sesame.
摘要
本研究展示了从当地市场随机采集的种子样本被 spp. 污染的频率；在30个黑胡椒样本中未发现受污染样本，而在36个（8.3%）分析的芝麻样本中有3个检测到 spp.；鉴定出三种不同血清型：蒙得维的亚型、斯坦利维尔型和蒂莱内型。评估了1至5千戈瑞辐照剂量下伽马辐照对黑胡椒和芝麻中蒙得维的亚型的灭活效果。3千戈瑞足以使每克减少3至4个对数菌落形成单位；而对于黑胡椒和芝麻样本，需要5千戈瑞才能使每克减少5.5至6个对数菌落形成单位。黑胡椒和芝麻之间未发现统计学上的显著差异。
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