相关实验视频
Updated: May 10, 2025

00:05
Preparation of High-Quality Fermented Fish Product
Published on: August 23, 2019
10.1K
胡卜精油作为低盐奶酪盐中的后防腐剂
Neli Ermenlieva1, Sylvia Stamova2, Kostadin Gramatikov3
1Department of Microbiology and Virusology, Faculty of Medicine, Medical University, 9000 Varna, Bulgaria.
Foods (Basel, Switzerland)
|April 26, 2025
概括
卡拉维精油通过抑制大肠杆菌和金黄色葡萄球菌等有害细菌,有效地保存了白盐酸奶酪. 这种天然防腐剂可以保持奶酪的保存.
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
- 自然产品化学 自然产品化学
背景情况:
- 白盐奶酪,像保加利亚白盐奶酪一样,是传统的乳制品,需要通过盐老化进行保存.
- 卡鲁姆·卡尔维 (caraway) 精油富含卡尔和利蒙,表现出已知的抗菌性质.
- 食品行业对天然防腐剂的需求日益增加,以提高安全性和可持续性.
研究的目的:
- 为了评估油精油作为盐水和白盐水奶酪中的天然防腐剂的抗菌效果.
- 评估甘露精油对对大肠杆菌和金黄色葡萄球菌的微生物安全性的影响.
- 为了确定胡卜精油对白色盐水奶酪的感觉特性的影响.
主要方法:
- 卡拉维精油以其卡和利蒙含量为特征,经过了抗菌活性测试.
- 在盐水和奶酪矩阵中评估了对大肠杆菌和金黄色葡萄球菌生长的抑制.
- 确定了最小杀菌度 (MBC),并进行了感官评估.
主要成果:
- 含有0.12% (v/v) 的卡拉维精油有效抑制了微生物生长,完全抑制了大肠杆菌.
- 在24小时内观察到Staphylococcus aureus的显著减少0.12% (v/v).
- 在奶酪和盐水中发现的最低杀菌度为0.25% (v/v),对奶酪的感觉质量没有不利影响 (100分).
结论:
- 卡拉维精油显示出作为白油奶酪的天然防腐剂的巨大潜力.
- 它提供了增强微生物安全和保护感官完整性的双重好处.
- 它的应用支持了乳制品行业对天然和可持续食品保存的趋势.
相关概念视频
Loss of Carboxy Group as CO2: Decarboxylation of Malonic Acid Derivatives
1.9K
Just like β-keto acids—which upon thermal decarboxylation form ketones—β-dicarboxylic acids undergo decarboxylation to generate monocarboxylic acids with the liberation of carbon dioxide.
1.9K
Loss of Carboxy Group as CO2: Decarboxylation of β-Ketoacids
3.1K
Carboxylic acids, upon heating, undergo a decarboxylation reaction by releasing carbon dioxide gas. Monocarboxylic acids do not undergo decarboxylation easily. However, a silver salt of carboxylic acid reacts with bromine or iodine under high temperature to release carbon dioxide gas and forms halide with one less carbon. This reaction is called the Hunsdiecker reaction.
3.1K
Preparation of Carboxylic Acids: Carboxylation of Grignard Reagents
4.2K
Carboxylic acids can be prepared by the carboxylation of Grignard reagents (RMgX). This method is convenient for converting alkyl (primary, secondary or tertiary), vinyl, benzyl, and aryl halides to carboxylic acids with one additional carbon than the starting RMgX.
4.2K
Carboxylic Acids to Acid Chlorides
6.7K
Carboxylic acids react with SOCl2 or PCl5 to form acid chlorides. Amongst the carboxylic acid derivatives, acid chlorides are the most reactive and synthetically important derivatives. They are useful reagents for Friedel–Crafts acylation of some aromatic compounds.
6.7K
Preparation of Carboxylic Acids: Overview
2.4K
There are various methods for the preparation of carboxylic acids. For example, oxidation of primary alcohols or aldehydes using strong oxidizing agents results in a carboxylic acid. Aldehydes can also be oxidized in the presence of mild oxidizing agents.
2.4K
Responses to Salt Stress
12.8K
Salt stress—which can be triggered by high salt concentrations in a plant’s environment—can significantly affect plant growth and crop production by influencing photosynthesis and the absorption of water and nutrients.
12.8K

