相关实验视频
Updated: Jul 25, 2025

10:12
Enrichment of Mammalian Tissues and Xenopus Oocytes with Cholesterol
Published on: March 25, 2020
6.1K
通过在低胆固醇曼奇戈奶酪中清洗来减少β环氧
Leocadio Alonso1, María V Calvo2, Javier Fontecha2
1Instituto de Productos Lácteos de Asturias (CSIC), 33300 Villaviciosa, Asturias, Spain.
Molecules (Basel, Switzerland)
|June 28, 2023
概括
当与乳酪洗相结合时,β-cyclodextrin (β-CD) 可以有效降低98.45%的曼奇戈奶酪中的胆固醇. 这一过程保存了奶酪.
科学领域:
- 食品科学与技术 食品科学与技术
- 乳制品科学 乳制品科学
- 生物化学 生物化学
背景情况:
- β-cyclodextrin (β-CD) 是一种循环寡糖,因其结合胆固醇的特性而被用于食品研究.
- 奶酪等乳制品中的降低胆固醇是健康意识的消费者感兴趣的重要领域.
研究的目的:
- 评估用β-CD清洗乳酪在降低羊奶中胆固醇的有效性 曼奇戈奶酪.
- 为了评估这一过程对奶酪的关键成分:牛奶,脂质和风味的影响.
主要方法:
- 用1%的β-CD处理巴氏化母羊奶.
- 使用和不使用β-CD的乳酪洗技术的应用.
- 对降低胆固醇,残留β-CD水平,化学性质 (脂肪,水分,蛋白质),脂质分数和风味成分的分析.
主要成果:
- 在经过β-CD处理的洗过的奶酪中,大约降低了98.45%的胆固醇.
- 成熟奶酪中的β-CD残留量为0.15%;化学和脂质概况基本保持不变.
- 没有观察到对风味成分或短链自由脂肪酸的显著不良影响.
结论:
- 干洗与β-CD相结合,是一种高效的清除曼奇戈奶酪中胆固醇的方法.
- 该过程是安全的,因为β-CD是可食用的,无毒的,并保留了奶酪的理想特征.
- 这种技术在降低胆固醇方面提供了显著的改善,使奶酪在不影响质量的情况下更健康.
相关概念视频
Intramolecular Claisen Condensation of Dicarboxylic Esters: Dieckmann Cyclization
2.5K
Dieckmann cyclization is an intramolecular Claisen condensation of diesters. The reaction occurs in the presence of a base and generates a cyclic β-ketoester as the final product. Commonly, 1, 6 and 1, 7-diesters are preferred substrates for the reaction since the generated five, and six-membered cyclic β-keto esters are particularly more stable.
2.5K
Detergent Purification of Membrane Proteins
5.2K
Detergents are used to purify the integral proteins of the membrane. The hydrophobic portion of the detergent can replace membrane phospholipids while solubilizing the membrane proteins. When detergent monomers reach a specific concentration in a solution called critical micelle concentration (CMC), they form micelles. Above CMC, the concentration of the detergent monomers remains in equilibrium with the micelle. The number of detergent monomers present in the CMC varies for each detergent, and...
5.2K
Esters to β-Ketoesters: Claisen Condensation Mechanism
3.7K
Regular Claisen condensation involves the synthesis of β-ketoesters by combining identical ester molecules bearing two α hydrogens in the presence of an alkoxide base. The reaction commences with the deprotonation of the acidic α hydrogen by the base to form a resonance stabilized ester enolate. This nucleophilic ion then attacks the carbonyl center of another ester molecule to generate a tetrahedral alkoxide intermediate. Next, the expulsion of the alkoxide group from the...
3.7K

