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1.
食源性致病菌导致的食品安全问题已成为世界上重要的公共卫生问题之一,寻找高效且安全的天然抑菌剂引起人们的关注。目前有研究表明低聚糖类物质如果胶低聚糖、低聚壳聚糖、褐藻胶低聚糖等具有较好的抑菌效果,并且低聚糖大多来源于植物胶、甲壳动物,天然海藻多糖等自然物质,对环境污染较小;因此低聚糖能够作为潜在的天然抑菌剂被广泛应用在食品行业中,具有一定的研究意义和应用前景,已经逐渐成为食品行业新的研究热点。该研究综述了几种低聚糖对食源性致病菌的抑菌作用,并分析总结了其抑菌机制:一是低聚糖破坏细菌细胞壁和细胞膜,二是渗入细胞内部破坏蛋白质和核酸物质;同时展望了低聚糖在涂膜保鲜和作为食品添加剂两方面的应用,以期为进一步深入研究低聚糖的作用和在食品行业的应用提供理论参考。  相似文献   

2.
食品生物腐败及新型防腐技术研究进展   总被引:1,自引:0,他引:1  
概述了食品生物腐败的原因和机理、食源性致病菌的类群和新型杀菌技术在食品防霉防腐领域的研究进展,并展望了新型防腐技术在食品安全生产和品质保证环节的应用前景。  相似文献   

3.
目的 了解保山市食品中食源性致病菌污染状况, 为监督管理提供科学依据。方法 2011~2015年按照《食品安全风险监测方案》样品采样要求抽样9类, 1404份食品样品。根据《食源性致病菌检验标准操作程序》方法对抽取的样品进行蜡样芽孢杆菌、金黄色葡萄球菌、沙门氏菌等12种致病菌监测。结果 2011~2015年间检测样品中, 阳性样品83份, 检出6种食源性致病菌85株, 致病菌污染率为5.91%, 其中蜡样芽孢杆菌检出率最高为19.63%。不同年份食源性致病菌污染率差异有统计学意义(P<0.001)。9类食品中婴幼儿食品及餐饮食品致病菌污染率最高, 分别为17.27%、14.81%; 散装食品致病菌污染率7.92%, 高于预包装食品3.28%(P<0.001); 第3季度的致病菌污染率为10.2%, 显著高于其他季度(P<0.008); 餐饮服务环节6种致病菌总污染率高于流通环节及生产加工环节。结论 保山市食品中存在食源性致病菌的污染, 食品安全监管部门应加强食品安全监督管理, 重点对散装食品进行监测监督, 在污染率高的第3季度及餐饮服务环节加强监管。  相似文献   

4.
目的 了解嘉定区食品中食源性致病菌的污染情况。方法 2016~2017年嘉定区食品中微生物及其致病因子监测共采集12大类样品433件, 检测460件样品, 并根据《国家食品污染和有害因素风险监测工作手册》中的方法进行检测。结果 监测样品中有49件样品检出食源性致病菌, 总检出率10.65%。其中, 蜡样芽胞杆菌检出率最高(32.09%), 其次分别为金黄色葡萄球菌(1.27%)、单核细胞增生李斯特氏菌(0.62%)、沙门氏菌(0.23%)。检出食源性致病菌较多的前4位食品品种分别为冷面、即食非发酵豆制品、即食发酵豆制品、即食凉面(粉、皮)。结论 根据本研究显示本区食品中存在食源性致病菌的污染, 应加强重点食品在各个环节的监管, 继续加强食品安全宣传教育。  相似文献   

5.
徐州市2007-2011年食品中食源性致病菌监测结果分析   总被引:1,自引:0,他引:1  
目的 了解徐州市食品中食源性致病菌污染状况,为食源性疾病监测提供科学依据.方法 依据《全国食源性致病菌监测工作手册》对食源性致病菌进行监测.结果 2007-2011年间共监测630份食品,总检出率为15.08%:检出沙门菌、大肠杆菌O157:H7、单增李斯特菌、副溶血性弧菌、金黄色葡萄球菌;阪崎杆菌、志贺菌、创伤弧菌未检出.生肉类和水产品污染较严重,生肉以单增李斯特菌和沙门菌污染程度高,检出率为分别为18.28%和10.75%;水产品以副溶血性弧菌检出率最高,为23.08%.结论 徐州地区食品中存在食源性致病菌污染,卫生监督部门应加强食品安全管理.  相似文献   

6.
    
Hepatitis A infection, caused by hepatitis A virus (HAV), is the leading cause of human viral hepatitis throughout the world and is mainly propagated via the fecal–oral route. Transnational outbreaks of food‐borne infections are reported with increasing frequency as a consequence of international food trade. Food‐borne outbreaks caused by HAV are mainly associated with bivalve molluscs, produce (soft fruits and leafy greens), and ready‐to‐eat meals. The purpose of this paper was to conduct a structured and systematic review of the published literature on the current state of knowledge regarding the stability of HAV in foods as well as the efficacy of food processing strategies and to identify and prioritize research gaps regarding practical and effective mechanisms to reduce HAV contamination of foods. In particular, processing and disinfection strategies for the 3 food categories have been compiled in this review, including common and emerging food technologies. Overall, most of these processes can improve food safety; however, from a commercial point of view, none of the methods can guarantee total HAV inactivation without affecting the organoleptic qualities of the food product.  相似文献   

7.
2010~2012年咸阳市食源性致病菌监测结果分析   总被引:2,自引:0,他引:2  
目的 了解咸阳市各类食品中食源性致病菌的污染情况, 确定可能污染上述致病菌的食品种类。方法 依照国标方法, 对食品分别进行增菌培养, 将菌体划线接种到相应的显色培养基培养, 挑选可疑菌落进行生化反应鉴定。结果 在803份不同的食品中共检出含致病菌74株, 总检出率9.02%。结论 本地主要消费食品存在一定的食源性致病菌污染, 金黄色葡萄球菌、单核细胞增生李斯特菌和沙门氏菌是主要引起食品污染的危险菌; 熟肉制品、中式凉拌菜和凉皮是最可能被致病菌污染的食品。  相似文献   

8.
目的 了解2017—2019年辽宁省市售食品中食源性致病菌的污染及其分布情况.方法 2017—2019年辽宁省共采集12类4694份样品,按照《国家食品污染物和有害因素风险监测工作手册》对食源性致病菌进行检测分析.结果 4694份样品中各种致病菌的总检出率差异较大,其中蜡样芽胞杆菌的检出率最高为12.78%.不同种类食...  相似文献   

9.
【目的】 了解食品中主要食源性致病菌的污染状况,确定高危食品,为预防和控制食源性疾病提供科学依据。【方法】 按照《全国食源性致病菌监测工作手册》 的检测技术要求,2011 - 2015 年在延边地区的几个监测点采集食品样品1069份,对沙门氏菌、单核细胞增生李斯特菌(定量)、金黄色葡萄球菌(定量)、铜绿假单胞菌、蜡样芽孢杆菌的污染情况进行监测。【结果】 1069份样品中,共检出致病菌115株,总检出率为10.76%.熟肉制品、生食动物性水产品、凉拌菜、熟制米面制品、婴幼儿食品、乳及乳制品、速冻米面品、特殊膳食用食品、饮用水、三明治以及流动早餐样品的致病菌检出率分别为17.65%(3/17)、15.79%(3/19)、11.76%(4/34)、34.48%(10/29)、33.80%(24/71)、40.00%(12/30)、6.67%(1/15)、42.86%(6/14)、58.33%(7/12)、10.00%(1/10)和71.43%(10/14);2011-2015年食源性致病菌检出率分别为0.94% 、1.87% 、6.83% 、0.65%、0.19%。【结论】 乳及乳制品、特殊膳食用食品、饮用水和流动早餐是延边地区食品的主要污染品种,作为直接入口食品的熟肉制品、凉拌菜、熟制米面制品和婴幼儿食品可能导致较高的食源性疾病风险。  相似文献   

10.
食源性病原菌,指在食品加工和流通过程中引入的病原菌,是引发食源性疾病的重要因素。这些病原菌以食品作为载体进行传播,一定程度上增加了某些食源性疾病爆发的可能,而传统的控制措施抑菌效果有限,当务之急是寻求革新的食品杀菌技术。食品辐照技术作为一种高新的冷杀菌技术,具有安全、无污染等优点,近年来在保障食品质量安全方面发挥的作用也引起了社会的高度重视,关于辐照技术对食品中病原菌致死作用的系统描述相对较少。本文结合国内外关于食品辐照灭菌的研究报道,综述了辐照技术的发展、辐照技术控制食品病原菌进展、辐照杀菌机制以及影响辐照灭菌效果的主要因素,并对该技术存在的问题和未来的研究进行了探讨,以期为进一步预防和控制食源性疾病提供新的思路。  相似文献   

11.
目的 了解大理州市售食品中细菌污染现状。方法 根据国家标准规定的方法及国家食品污染物和有害因素风险监测工作手册, 对大理州市售食品11类510件进行卫生指示菌(菌落总数、大肠菌群、霉菌、酵母菌)及食源性致病菌检测, 并用SPSS 19.0统计软件对检测数据进行分析。结果 菌落总数总超标率为20.94%, 大肠菌群总超标率为7.93%, 霉菌、酵母菌总超标率为49.09%; 食源性致病菌总检出率为15.69%, 其中金黄色葡萄球菌的检出率为2.91%, 沙门氏菌的检出率为7.14%, 蜡样芽胞杆菌的检出率为7.21%, 单核细胞增生李斯特氏菌的检出率为2.99%, 副溶血弧菌的检出率为7.95%, 弯曲菌的检出率为8.96%, 变形杆菌的检出率为4.69%, 未检出小肠结肠炎耶尔森菌和致泻大肠艾希氏菌; 生食肉制品中金黄色葡萄球菌和沙门氏菌检出率最高的, 分别为25.00%和75.00%, 蜡样芽孢杆菌在外卖配送餐中检出率最高, 为20.83%, 副溶血弧菌在水产品中检出率为7.89%。生禽肉类食品中弯曲菌的检出率为16.67%, 变形杆菌在熟制米面制品和豆制品中都检出, 检出率分别为2.74%和4.17%。2016~2018年大理州市售食品致病菌总检出率分别为12.76%、13.85%、23.73%, 呈现总体上升的趋势, 差异有统计学意义(P<0.05)。结论 大理州市售食品存在不同程度细菌性污染, 特别是本地的特色食品生食肉制品细菌污染情况突出, 存在食品安全隐患, 应进一步加强相关食品的卫生监管。  相似文献   

12.
    
Foodborne diseases are an important public health problem in the world. The bacterial resistance against presently used antibiotics is becoming a public health issue; hence, the discovery of new antimicrobial agents from natural sources attracts a lot of attention. Antibacterial activities of oligogalacturonide from commercial microbial pectic enzyme (CPE) treated citrus pectin, which exhibits antioxidant and antitumor activities, against 4 foodborne pathogens including Salmonella Typhimurium, Staphylococcus aureus, Listeria monocytogenes, and Pseudomonas aeruginosa was assessed. Pectin hydrolysates from CPE hydrolysis exhibited antibacterial activities. However, no antibacterial activity of pectin was observed. Citrus oligogalacturonide from 24‐h hydrolysis exhibited bactericidal effect against all selected foodborne pathogens and displayed minimal inhibitory concentration at 37.5 μg/mL for P. aeruginosa, L. monocytogenes, and S. Typhimurium, and at 150.0 μg/mL for S. aureus.  相似文献   

13.
    
In recent decades, the demand for ready‐to‐eat (RTE) food items prepared by the food catering sector has increased together with the value of cook‐serve, cook‐chill, and cook‐freeze food products. The technologies by which foods are cooked, chilled, refrigerated for storage, and reheated before serving are of prime importance to maintain safety. Packaging materials and food containers play an important role in influencing the cooling rate of RTE foods. Food items that are prepared using improper technologies and inappropriate packaging materials may be contaminated with foodborne pathogens. Numerous research studies have shown the impact of deficient cooling technologies on the survival and growth of foodborne pathogens, which may subsequently pose a threat to public health. The operating temperatures and cooling rates of the cooling techniques applied must be appropriate to inhibit the growth of pathogens. Food items must be stored outside the temperature danger zone, which is between 5 and 60 °C, in order to inhibit the growth of these pathogens. The cooling techniques used to prepare potentially hazardous foods, such as cooked meat, rice, and pasta, must be properly applied and controlled to ensure food safety. This paper critically reviews the effects of cooling and its relationship to food containers on the safety of RTE foods produced and sold through the food service industry.  相似文献   

14.
    
Adulteration and mislabeling have become a very common global malpractice in food industry. Especially foods of animal origin are prepared from plant sources and intentionally mislabeled. This type of mislabeling is an important concern in food safety as the replaced ingredients may cause a food allergy or toxicity to vulnerable consumers. Moreover, foodborne pathogens also pose a major threat to food safety. There is a dire need to develop strong analytical tools to deal with related issues. In this context, proteomics stands out as a promising tool used to report the aforementioned issues. The development in the field of omics has inimitable advantages in enabling the understanding of various biological fields especially in the discipline of food science. In this review, current applications and the role of proteomics in food authenticity, safety, and quality and food traceability are highlighted comprehensively. Additionally, the other components of proteomics have also been comprehensively described. Furthermore, this review will be helpful in the provision of new intuition into the use of proteomics in food analysis. Moreover, the pathogens in food can also be identified based on differences in their protein profiling. Conclusively, proteomics, an indicator of food properties, its origin, the processes applied to food, and its composition are also the limelight of this article.  相似文献   

15.
目的 了解冻鱼糜制品中食源性致病菌污染状况。方法 从全国范围内采集冻鱼糜制品4 516份,按照食品安全国家标准《食品微生物学检验》相应标准的规定,对样品中单核细胞增生李斯特菌、副溶血性弧菌、小肠结肠炎耶尔森氏菌、致泻大肠埃希菌进行检验。结果 单核细胞增生李斯特菌检出率6.02%(272/4 516),副溶血性弧菌检出率0.84%(38/4 516),小肠结肠炎耶尔森氏菌检出率0.84%(38/4 516),致泻大肠埃希菌检出率0.91%(41/4 516)。单核细胞增生李斯特菌的污染在4种食源性致病菌中较为突出,且不同产地的样品中单核细胞增生李斯特菌的污染差异较大。除副溶血性弧菌以外,其余3种食源性致病菌在散装样品中的检出率均高于预包装样品。结论 市售冻鱼糜制品存在致病菌污染,需要关注其健康风险。  相似文献   

16.
随着人民生活水平的提高和食品行业的发展,食品安全问题频繁发生,成为人们的重点关注问题。食源性致病菌是造成食品安全问题的主要因素之一,使用可靠、快速、有效的检测方法对保证食品安全至关重要。现如今生物技术发展迅速,其在食品致病菌检测中的应用是当前的研究热点。本文综述了免疫学、生物学、生物传感器技术等基于生物技术在食品中致病菌的技术开发和应用研究进展,并提出双功能抗体在食品检测领域的研究前景,以期为食品致病菌的微生物快速检测与筛查技术提供方法以参考。  相似文献   

17.
  总被引:1,自引:0,他引:1  
  相似文献   

18.
    
V.K. Bajpai    A. Rahman    N.T. Dung    M.K. Huh    S.C. Kang 《Journal of food science》2008,73(6):M314-M320
ABSTRACT:  The aim of this study was to examine the chemical composition of the essential oil isolated from the floral parts of Magnolia liliflora Desr. by hydrodistillation, and to test the efficacy of essential oil and various leaf extracts against a diverse range of microorganisms comprising food spoilage and foodborne pathogenic bacteria. The chemical composition of essential oil was analyzed by GC-MS. It was determined that 52 compounds, which represented 78.07% of total oil, were present in the oil. The oil contained mainly levoxine (15.59%), methylcyclopropane (24.26%), 2-β-pinene (5.3%), caryophyllene oxide (4.01%), and β-caryophyllene (1.7%). The oil (1000 ppm/disc) and leaf extracts (1500 ppm/disc) exhibited promising antibacterial effects against the tested pathogens as a diameter of zones of inhibition (9 to 18 and 7 to 12 mm) and MIC values (125 to 1000 and 500 to 3000 μg/mL), respectively. Also, the oil had a potent detrimental effect on the viable count of the tested bacteria. The results obtained in this study support the role of essential oil and the leaf extracts derived from M. liliflora as a remarkable approach to inhibit the growth of food spoilage and foodborne pathogens.  相似文献   

19.
食源性致病菌是影响食品安全的主要问题之一.建立快速的食源性致病菌检测方法对控制农产品和食品从生产、加工、运输、仓储、口岸通关到销售和消费各个环节的生物性风险至关重要.由于传统病原微生物检测耗时长且操作较繁琐,不能及时检测出食品中的病原菌.近年来随着生物技术的快速发展以及对食品安全监测要求的提高,食源性致病菌快速检测方法...  相似文献   

20.
近年来,随着肉制品种类的不断增加和肉制品加工工艺的更新优化,食源性致病菌在肉类加工各个环节中存在的污染风险也在不断增加.如何采取有效的食源性致病菌防控措施是肉类研究领域和肉类工业关注的焦点.噬菌体作为一种可替代传统抑菌剂的生物抑菌物质,受到学者们的广泛关注,但是其在肉类工业中的应用未得到较全面地总结和评估.因此,本文概...  相似文献   

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