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Related Concept Videos

Cholesterol: Significance and Regulation01:29

Cholesterol: Significance and Regulation

Although not a source of energy, cholesterol plays a significant role as a foundational structure for bile salts, steroid hormones, and vitamin D, as well as being a crucial component of plasma membranes. Approximately 15% of blood cholesterol is derived from our diet, with the remainder synthesized from acetyl CoA by the liver and intestines. Cholesterol is eliminated from the body through its conversion into bile salts, which are eventually discarded in the feces.
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Lipids are an essential component of a balanced human diet. Triglycerides, which make up the majority of dietary lipids, are found in both saturated fats—commonly present in meat, dairy products, and certain tropical plants like coconut, and hydrogenated oils such as margarine and baking shortenings (trans fats)—and unsaturated fats, which are abundant in seeds, nuts, olive oil, and most vegetable oils. The main sources of cholesterol include egg yolks, various meats and organ meats, shellfish,...
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Related Experiment Video

Updated: Jun 25, 2026

Enrichment of Mammalian Tissues and Xenopus Oocytes with Cholesterol
10:12

Enrichment of Mammalian Tissues and Xenopus Oocytes with Cholesterol

Published on: March 25, 2020

Use of beta-cyclodextrin to decrease the level of cholesterol in milk fat.

L Alonso1, P Cuesta, J Fontecha

  • 1Food Agricultural Products Center and Department of Animal Science, Oklahoma State University, Stillwater, OK 74075, USA.

Journal of Dairy Science
|February 24, 2009
PubMed
Summary
This summary is machine-generated.

Beta-cyclodextrin effectively removes cholesterol from milk. Optimal conditions involve specific concentrations and holding times for efficient cholesterol reduction without altering milk composition.

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Lipid Exchange Assay in Living Cells
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Last Updated: Jun 25, 2026

Enrichment of Mammalian Tissues and Xenopus Oocytes with Cholesterol
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Published on: March 25, 2020

Lipid Exchange Assay in Living Cells
08:59

Lipid Exchange Assay in Living Cells

Published on: March 21, 2025

Area of Science:

  • Food Science
  • Dairy Technology
  • Biochemistry

Background:

  • Cholesterol in milk fat can be a health concern.
  • Reducing milk cholesterol is desirable for certain dietary applications.
  • Beta-cyclodextrin is a known agent for complexing cholesterol.

Purpose of the Study:

  • To determine optimal conditions for cholesterol removal from milk using beta-cyclodextrin.
  • To evaluate the efficiency of beta-cyclodextrin in cholesterol reduction on a commercial scale.
  • To assess the impact of beta-cyclodextrin treatment on milk's fatty acid and triglyceride composition.

Main Methods:

  • Pasteurized, nonhomogenized milk was treated with varying concentrations of beta-cyclodextrin (0.4-1.0%) at 4°C.
  • Mixing and holding times were optimized for cholesterol complex formation and precipitation.
  • Beta-cyclodextrin-cholesterol complexes were removed via centrifugation.
  • Fatty acid and triglyceride profiles were analyzed using gas chromatography.

Main Results:

  • Beta-cyclodextrin concentrations of 0.6% to 1.0% removed 65.42% to 95.31% of cholesterol within 20 minutes.
  • A 6-hour treatment time yielded maximum cholesterol removal.
  • No significant differences in fatty acid or triglyceride composition were observed between treated and control milk.
  • Residual beta-cyclodextrin levels in skim and cream fractions were minimal (0.35% and 0.1%, respectively).

Conclusions:

  • Beta-cyclodextrin is a highly effective agent for reducing cholesterol in milk.
  • Optimal cholesterol removal can be achieved with specific beta-cyclodextrin concentrations and extended holding times.
  • The process does not negatively impact the nutritional profile of milk regarding fatty acids and triglycerides.