抗菌和抗菌作用的抗菌和抗菌作用.
Robert Gál1, Natália Čmiková2, Aneta Prokopová3
1Department of Food Technology, Faculty of Technology, Tomas Bata University in Zlín, Vavrečkova 275, 760 01 Zlín, Czech Republic.
Foods (Basel, Switzerland)
|June 10, 2023
概括
将精油 (EO) 添加到牛肉中,增强了病原体失活,特别是Listeria monocytogenes. 这种天然的抗微生物方法有望提高 sous-vide加工肉类的安全性.
科学领域:
- 食品科学 食品科学 食品科学
- 微生物学 微生物学
- 食品安全 食品安全
背景情况:
- 苏斯维德加工虽然有益,但如果像Listeria monocytogenes这样的病原体没有得到充分的失活,就会带来风险.
- 不适当的温度可以允许细菌繁殖,导致食物传播疾病.
研究的目的:
- 为了研究热处理和Salvia officinalis精油 (圣EO) 对牛肉皮中的Listeria monocytogenes的联合疗效.
- 为了确定三EO是否增强了 sous-vide 处理的抗菌作用.
主要方法:
- 牛肉细腿样本被L. monocytogenes接种,并在不同温度 (50-65°C) 经过或不经过圣EO的低温加工.
- 细菌计数 (总数,大肠杆菌,L. monocytogenes) 用MALDI-TOF质谱测量在12天内进行了评估.
主要成果:
- 树EO,与热相结合,证明了L. monocytogenes在牛肉中的失活性.
- 较低的温度 (50°C) 导致总体细菌数量较高,表明疗效降低.
- 伪菌和L. monocytogenes是主要发现的有机体.
结论:
- 添加天然抗微生物药物,如香EO可以有效地提高 sous-vide 牛肉肉的安全性.
- 将热量与圣EO结合起来是一个可行的策略,以减轻与 sous-vide 食品制备相关的风险.
相关概念视频
01:28Antimicrobial Effectiveness
98
The effectiveness of antimicrobial agents depends on various factors influencing their ability to eliminate microbial populations. Larger microbial populations require more time for complete eradication, emphasizing the importance of population size analysis when evaluating antimicrobial efficacy.Microbial resistance to antimicrobial agents varies significantly. Highly resilient microorganisms include endospores, gram-negative bacteria, and non-enveloped viruses, while prions are exceptionally...
98
01:23Antimicrobial Proteins
1.1K
Antimicrobial proteins are important components of the immune system. They aid the body in combating pathogens by either killing them directly or hindering their replication processes. Four main types of antimicrobial substances are interferons, the complement system, iron-binding proteins, and antimicrobial proteins.
Interferons
Interferons (IFNs) are proteins produced by lymphocytes, macrophages, and fibroblasts infected with viruses. While IFNs cannot prevent viruses from entering and...
Interferons
Interferons (IFNs) are proteins produced by lymphocytes, macrophages, and fibroblasts infected with viruses. While IFNs cannot prevent viruses from entering and...
1.1K
01:27Combined Effects of Drugs: Synergism
4.1K
Synergism is a useful mechanism where combining two or more drugs is more effective than each constituent used alone. Such combinations are also called supra-additive interactions. The drugs collectively enhance the final therapeutic effect by acting on different targets. Another advantage is that the low dose of each constituent drug is sufficient to achieve the desired effect. This helps reduce the duration of therapy and lower the adverse effects of these drugs.
Such synergistic combinations...
Such synergistic combinations...
4.1K
01:18Surface Membrane Barriers
1.2K
The skin and mucous membranes serve as the primary line of defense against pathogens by providing both physical and chemical protection. These barriers are essential in preventing the entry and establishment of microbes, thereby maintaining the integrity of the host.
The outer layer of the skin, the epidermis, is a robust barrier comprising layers of closely packed keratinized cells. This dense arrangement prevents microbes from penetrating the body. The periodic shedding of epidermal cells...
The outer layer of the skin, the epidermis, is a robust barrier comprising layers of closely packed keratinized cells. This dense arrangement prevents microbes from penetrating the body. The periodic shedding of epidermal cells...
1.2K
01:30Combined Effects of Drugs: Antagonism
8.7K
The combined effects of drugs can result in various interactions, of which an important type is antagonism. Antagonism is a mechanism where one drug inhibits or counteracts the effects of another drug. Antagonism can occur through various means, including receptor binding, allosteric modulation, functional interaction, chemical reactions, and pharmacokinetic processes.
The most common type is receptor antagonism, where one drug acts as an antagonist to block the effects of another drug by...
The most common type is receptor antagonism, where one drug acts as an antagonist to block the effects of another drug by...
8.7K
01:27Chemical Agents for Microbial Control
141
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...
141