相关实验视频

Updated: Jun 16, 2025

Biosensor for Detection of Antibiotic Resistant Staphylococcus Bacteria

Biosensor for Detection of Antibiotic Resistant Staphylococcus Bacteria

Published on: May 8, 2013

隔离,表征和应用一种菌体SSP49,以控制婴儿菜叶上的金黄色葡萄球菌污染

Bong Sun Kim¹, Eun-Jin Ko¹, Jieun Choi²

¹Department of Food Science and Technology, Seoul Women's University, 621, Hwarangro, Nowon-gu, Seoul 01797, Republic of Korea.

Food research international (Ottawa, Ont.)

|August 15, 2024

概括

一种新型的菌体,SSP49,可以有效控制新鲜农产品中黄金菌污染. 这种天然的抗微生物药物被认为是抗生素的安全替代品,可以预防食物传播疾病.

科学领域:

微生物学微生物学
食品安全食品安全
细菌治疗疗法是一种细菌治疗.

背景情况:

黄金葡萄球菌 (Staphylococcus aureus) 是一种在新鲜农产品中发现的重要食源性病原体,引起疾病并导致抗生素耐药性.
抗生素耐药菌株的增加,比如耐甲林的金黄色细菌,需要采用替代的控制策略.
菌体,天然的病毒感染细菌,提供了一个潜在的环保解决方案,以对抗S. aureus.

研究的目的:

隔离和表征一种针对金黄色葡萄球菌 (Staphylococcus aureus) 有效的菌体.
评估在新鲜产品中应用的分离细菌菌体的安全性和有效性.
确定菌体SSP49作为生物控制剂对抗S. aureus的潜力.

主要方法:

从污水样本中分离了性细菌菌体SSP49.
确定菌体SSP49的形态,生物和遗传特征,包括全基因组测序.
在体外评估宿主生长抑制,宿主特异性以及在各种条件下 (温度,pH) 的稳定性.
在现场评估菌体SSP49在减少S. aureus在婴儿菜叶上的有效性.

主要成果:

菌体SSP49,属于Straboviridae家族,在体外30小时内抑制了S. aureus的生长.
它表现出高宿主特异性和广泛的宿主范围对抗S. aureus菌株,使用细胞壁铁酸作为受体.
菌体的基因组 (137,283 bp,191 ORF) 缺少溶解性,毒性或抗生素耐药性的基因,这表明安全性.
在各种温度和pH水平下,SSP49表现出稳定性.
在4°C (1.2日志CFU/cm2) 和25°C (2.1日志CFU/cm2) 的婴儿菜上有效减少金黄色细菌.

结论:

菌体SSP49是一种安全有效的生物控制剂,用于对抗金黄色葡萄球菌.
它对新鲜农产品的稳定性和有效性突出显示了它在防止食品传播污染方面的潜力.
在食品工业中,SSP49是抗生素的一个有希望的天然替代品,用于控制黄金色杆菌.

关键词:

婴儿菜叶子婴儿菜叶子细菌菌体是一种细菌.生物控制生物控制食品应用食品应用受体分析受体分析黄金葡萄球菌黄金葡萄球菌

更多相关视频

Bacteriophage Effectiveness for Biocontrol of Foodborne Pathogens Evaluated via High-Throughput Settings

Bacteriophage Effectiveness for Biocontrol of Foodborne Pathogens Evaluated via High-Throughput Settings

Published on: August 19, 2021

Time-Lapse Epifluorescence Microscopy Imaging of Pseudomonas aeruginosa and Staphylococcus aureus Heterogeneous Phenotypes

Time-Lapse Epifluorescence Microscopy Imaging of Pseudomonas aeruginosa and Staphylococcus aureus Heterogeneous Phenotypes

Published on: February 14, 2025

相关概念视频

Lytic Cycle of Bacteriophages

Lytic Cycle of Bacteriophages

Bacteriophages, also known as phages, are specialized viruses that infect bacteria. A key characteristic of phages is their distinctive “head-tail” morphology. A phage begins the infection process (i.e., lytic cycle) by attaching to the outside of a bacterial cell. Attachment is accomplished via proteins in the phage tail that bind to specific receptor proteins on the outer surface of the bacterium. The tail injects the phage’s DNA genome into the bacterial cytoplasm. In the...

Lysogenic Cycle of Bacteriophages

Lysogenic Cycle of Bacteriophages

In contrast to the lytic cycle, phages infecting bacteria via the lysogenic cycle do not immediately kill their host cell. Instead, they combine their genome with the host genome, allowing the bacteria to replicate the phage DNA along with the bacterial genome. The incorporated copy of the phage genome is called the prophage. Some prophages can re-activate and enter the lytic cycle. This often occurs in response to a perturbation, such as DNA damage, but can also transpire in the absence of...