相关实验视频
Updated: Jul 26, 2025

00:05
Preparation of High-Quality Fermented Fish Product
Published on: August 23, 2019
10.4K
辐射是一种有前途的技术,可以改善鱼类的细菌学和物理化学质量
Eman F E Mohamed1, Abd El-Salam E Hafez1, Hanan G Seadawy2
1Department of Food Hygiene, Safety and Technology, Faculty of Veterinary Medicine, Zagazig University, Zagazig 44519, Egypt.
Microorganisms
|June 15, 2023
概括
马辐射通过减少病原细菌和有氧板数 (APC) 而不会影响营养质量,有效地保护鱼类. 这种冷处理提供了一种安全,廉价的方法来预防鱼类传播的疾病.
科学领域:
- 食品科学与技术 食品科学与技术
- 微生物学 微生物学
- 辐射化学 辐射化学
背景情况:
- 鱼类消费与食源性疾病有关,需要有效的保存方法.
- 鱼类中的致病细菌和高有氧盘数 (APC) 构成重大公共卫生风险.
- 玛辐射被探索为减轻鱼类微生物污染的潜在解决方案.
研究的目的:
- 为了评估玛辐射在保存鱼类中的有效性.
- 评估玛辐射对微生物负载,致病细菌以及鱼类的感官和化学特性的影响.
- 为了确定玛辐射是否是一种安全且具有成本效益的鱼类保存方法.
主要方法:
- 鱼类样本经过不同剂量的马辐射.
- 确定了有氧板数 (APC) 和常见病原性细菌 (例如,金黄色细菌) 的流行率.
- 对经过处理和未经处理的样本进行了体感特性,近距离成分 (碳水化合物,蛋白质,脂质) 和化学分析.
主要成果:
- 马辐射显著减少了APC和致病细菌,以剂量依赖的方式.
- 5KGy的剂量完全消除了APC (100%的减少) 和致病细菌.
- 经过体感和化学分析,没有对鱼类质量产生显著的不良影响,近距离成分基本保持不变.
- 未经处理的鱼样超过了允许的APC限值,并且显示出高S. aureus的流行率.
结论:
- 马辐射是一种高效的鱼类保存方法,可显著减少微生物污染.
- 这种冷冷的过程保持了鱼的质量,包括营养价值和感官属性.
- 马辐射是一种安全,廉价和有吸引力的技术,用于控制鱼类传播的病原体并提高食品安全.
相关概念视频
Physical Methods for Controlling Microbial Growth: Radiation and Filtration
139
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.
139
Physical Methods for Controlling Microbial Growth: Temperature
149
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...
149

