压力喷雾与高压电压喷雾相结合的微生物失活,并将其应用于蜂蜜树果汁中
Dongmei Yang1, Bo Wang2, Yuchuan Wang1
1School of Food Science and Technology, Jiangnan University, 214122 Wuxi, Jiangsu, China.
International journal of food microbiology
|February 1, 2024
概括
压力喷雾与高压电压喷雾 (PS-ES) 结合,提供了一种非热方法来保存食品. 这种新的技术有效地使大肠杆菌和金黄色杆菌等细菌失活,从而保持食品质量.
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
- 生物物理学的生物物理.
背景情况:
- 非热加工方法对于保持液体食品质量至关重要.
- 传统的热处理 (HT) 可能会对食物的味道和营养产生负面影响.
- 需要新型的失活技术来克服HT的局限性.
研究的目的:
- 为了比较压力喷雾与高压电压喷雾 (PS-ES) 结合的热处理 (HT) 微生物不活化.
- 阐明PS-ES对大肠杆菌和金黄色杆菌的失活机制.
- 为了评估PS-ES对蜂蜜树汁微生物活性,味道和颜色的影响.
主要方法:
- 应用PS-ES和HT治疗对一个模拟系统和蜂蜜树汁.
- 使用殖民地形成单位 (CFU/mL) 量化微生物无活化.
- 评估了细胞变化,包括透性,膜完整性,膜潜力和细胞膜结构.
主要成果:
- 通过PS-ES,大肠杆菌和黄金色杆菌的感染量分别降低了1.99和1.83 log CFU/mL.
- PS-ES破坏了细菌细胞膜,增加了透性并释放了细胞内容.
- 在果汁中使用PS-ES治疗可以将细菌数量从4.48降低到1.99日志CFU/mL,味道损失小于HT.
结论:
- PS-ES是一种有效的非热方法,用于液体食品中的微生物无活化.
- 与HT相比,PS-ES破坏细菌细胞膜,提供了独特的无活化机制.
- 在储存期间,PS-ES保留了蜂蜜大汁的味道和颜色.
更多相关视频
11:47Evaluation of the Efficacy of Organic Peroxyacids for Eradicating Dairy Biofilms Using an Approach Combining Static and Dynamic Methods
Published on: December 9, 2022
1.7K
06:29Live/Dead Staining for Quantifying Viable but Not Culturable Cells in Manuka Honey-Treated Wound-Causing Bacteria
Published on: April 25, 2025
189
相关概念视频
01:29Methods of Sterilization I: Physical Methods
19.9K
As used in a healthcare facility, sterilization destroys all microorganisms through physical or chemical methods. The physical method includes steam, dry heat, boiling water, and radiation.
Steam sterilization uses non-toxic, low-cost moist heat in the form of saturated steam under pressure, which is fast, microbicidal, and sporicidal, and quickly warms and penetrates fabrics. Autoclaves, or steam sterilizers, expose each item to direct steam contact for a predetermined time at the necessary...
Steam sterilization uses non-toxic, low-cost moist heat in the form of saturated steam under pressure, which is fast, microbicidal, and sporicidal, and quickly warms and penetrates fabrics. Autoclaves, or steam sterilizers, expose each item to direct steam contact for a predetermined time at the necessary...
19.9K
01:30Methods of Sterilization II: Chemical Methods
6.3K
In healthcare, the chemical method of sterilization uses chemical sterilants to treat surgical instruments and medical supplies to help prevent the transmission of infectious pathogens to patients. Due to heat sensitivity, most medical supplies and equipment should not be exposed to high temperatures. These parts include rubber, plastic, glass, and other similar elements.
Using chemical sterilization rather than heat to clean out equipment is recommended. It eradicates and removes all bacteria,...
Using chemical sterilization rather than heat to clean out equipment is recommended. It eradicates and removes all bacteria,...
6.3K
01:23Hand hygiene
3.2K
Asepsis is the practice of preventing or breaking the chain of infection. The nurse employs aseptic techniques to prevent the spread of microorganisms and reduce the risk of diseases. Hand hygiene is the cornerstone of aseptic techniques and is classified into medical and surgical asepsis. Medical asepsis includes hand hygiene and the use of gloves. Surgical asepsis, or the sterile technique, refers to practices that render and keep objects and areas free of microorganisms.
Hand washing...
Hand washing...
3.2K