在有或没有性电解水化器的肉类成熟室中减少微生物负荷
Federica Savini1, Federica Giacometti1, Sean Alberto Cuomo2
1Department of Veterinary Medical Sciences, Alma Mater Studiorum University of Bologna, Ozzano dell'Emilia.
Italian journal of food safety
|October 12, 2023
概括
干燥老化室自然减少病原体,比如Listeria monocytogenes的3日志CFU/cm2. 电解水 (REW) 进一步增强了病原体的减少,为肉类储存环境提供安全有效的清洁解决方案.
科学领域:
- 食品微生物学 食品微生物学
- 食品安全工程 食品安全工程
- 卫生和卫生设施卫生和卫生设施.
背景情况:
- 干燥老化增强了肉的柔软性和风味,但存在污染风险.
- 在食品加工和储存中,对表面的病原体控制至关重要.
- 李斯特菌单细胞菌,大肠杆菌,沙门氏菌和金黄色葡萄球菌是主要的食物传播病原体.
研究的目的:
- 评估特定的食源性病原体在干燥老化室表面的生存情况.
- 评估性电解水 (REW) 在减少这些病原体方面的有效性.
- 确定REW的可行性,用于干燥老化设施的例行清洁.
主要方法:
- 在受控的环境条件下,在干燥老化室的内部表面上评估微生物生存率.
- 电解水 (REW) 通过雾化与吸烟系统相结合的应用.
- 在24小时内对病原体减少的量化 (日志CFU/cm2).
主要成果:
- 仅仅干燥老化室的条件在24小时内就会使微生物数量减少约3log CFU/cm2.
- 雾化REW应用增加了病原体的减少:L. monocytogenes的约1日志CFU/cm2和S. aureus的约2日志CFU/cm2.
- 在干燥老化环境中,REW对测试的病原体表现出显著的抗菌活性.
结论:
- 标准的干燥老化条件有助于显著减少病原体.
- 性电解水 (REW) 是一种有效和安全的药物,可以在干燥老化室中减少食物传播的病原体.
- REW提供了一种可持续的清洁解决方案,消除了对表面冲洗的需求.
相关概念视频
Physical Methods for Controlling Microbial Growth: Radiation and Filtration
36
Radiation and filtration are essential tools for microbial control, targeting microorganisms through distinct mechanisms. Radiation eliminates microbes by damaging their DNA, either killing them or inhibiting their growth. Based on wavelength, radiation is classified into two types: nonionizing and ionizing radiation.Non-ionizing radiation, such as UV radiation (200–400 nm), is absorbed by DNA, causing defects that effectively disinfect surfaces, air, and water, including safety cabinets.
36
Physical Methods for Controlling Microbial Growth: Temperature
32
Heat is a widely used method to control microbial growth by targeting and denaturing cellular proteins, thereby killing or inactivating microbes. This method's effectiveness is quantified using parameters such as the thermal death point (TDP), thermal death time (TDT), and decimal reduction time (D value). TDP represents the lowest temperature at which all microorganisms in a liquid suspension are eliminated within 10 minutes, whereas TDT is the time necessary to achieve sterilization at a...
32
Chemical Agents for Microbial Control
39
Chemicals play important roles in controlling microbial growth by targeting microbial structures and functions as sanitizers, antiseptics, disinfectants, and sterilants.Alcohols are commonly used sanitizers, effectively disrupting lipid membranes, which compromises cell integrity. They are also used as antiseptics and disinfectants due to their rapid action and versatility.Phenols and their derivatives phenolics , known for denaturing proteins and disrupting cell membranes, are particularly...
39
Biological Methods for Microbial Control
44
Biological agents offer an effective means of controlling microbial growth by leveraging natural processes like predation, competition, and the secretion of antimicrobial substances.Predatory bacteria such as Bdellovibrio species target and kill pathogens like Salmonella and E. coli. They are widely used in poultry farms to control infections. Myxococcus species help combat plant-pathogenic fungi. These naturally occurring predators serve as eco-friendly alternatives to chemical pesticides and...
44
Microorganisms in Agriculture and Food industry
45
Microorganisms play a crucial role in agriculture and the food industry, contributing to soil fertility, crop protection, and food production. Their functions range from nitrogen fixation and biopesticide production to fermentation and food preservation, making them indispensable to sustainable farming and food safety.Role in AgricultureNitrogen-fixing bacteria, such as Rhizobium (symbiotic) and Azotobacter (free-living), convert atmospheric nitrogen into ammonia through biological nitrogen...
45
Methods for Controlling Microbial Growth
46
Microbial growth control refers to various methods employed to inhibit, reduce, or eliminate microorganisms to ensure safety and hygiene across different settings. These methods are categorized based on the target environment and the level of microbial control required.Biocides are versatile agents designed to control microorganisms by either inhibiting their growth or outright killing them. These agents work through various physical, chemical, mechanical, or biological mechanisms. The...
46


