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Related Concept Videos

Drug Distribution: Plasma Protein Binding01:29

Drug Distribution: Plasma Protein Binding

Drugs predominantly attach to plasma proteins, with only a small percentage remaining unbound. The unbound portion can be calculated as one minus the bound fraction. Acidic drugs form large, inactive complexes by reversibly binding to plasma albumin, which prevents them from diffusing across biological barriers. These drug-protein complexes act as reservoirs for the drugs. As the concentration of unbound drugs decreases, these complexes quickly dissociate to release the free drug, maintaining...
Factors Affecting Protein-Drug Binding: Protein-Related Factors01:20

Factors Affecting Protein-Drug Binding: Protein-Related Factors

Drug binding to proteins is a key aspect of pharmacokinetics and can influence a drug's distribution, absorption, and elimination in the body. Several factors, including the drug's physiochemical properties, protein concentration, disease states, and the number of binding sites on the protein, influence this process.
The physicochemical properties of a drug play a significant role in its ability to bind to proteins. Lipophilic drugs, which dissolve in fats, oils, and lipids, can be bound by...
Protein-Drug Binding: Mechanism and Kinetics01:16

Protein-Drug Binding: Mechanism and Kinetics

Protein-drug binding refers to the interaction between drugs and proteins within the body. This binding process can occur intracellularly, involving drug interactions with enzymes or receptors within cells, or extracellularly, involving plasma proteins in the blood.
Various forces drive these interactions, including hydrogen bonds, hydrophobic interactions, ionic bonds, electrostatic interactions, and van der Waals forces. These bonds enable drugs to bind to specific sites on proteins,...
Factors Affecting Protein-Drug Binding: Drug-Related Factors01:18

Factors Affecting Protein-Drug Binding: Drug-Related Factors

Drug binding to proteins is a complex phenomenon influenced by various drug-related factors, each playing a significant role in the interaction between drugs and proteins within the body.
One crucial factor in drug-protein binding is the drug's lipophilicity or its affinity for fat. More lipophilic drugs tend to have higher binding extents. For example, highly lipophilic drugs like cloxacillin exhibit substantial protein binding, with as much as 95% of the drug binding to proteins. In contrast,...
Drug Binding to Blood Components01:30

Drug Binding to Blood Components

When drugs enter systemic circulation, they interact with various components of the blood, including proteins such as human serum albumin (HSA), α1-acid glycoprotein (AAG), lipoproteins, globulins, and red blood cells (RBCs).
HSA is the most abundant plasma protein and is vital in drug binding. It contains distinct drug-binding sites, with different drugs exhibiting affinity for specific sites. There are three main drug-binding domains for HSA: sites I, II, and III. These domains are further...

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Related Experiment Video

Updated: Jun 27, 2026

Semi-Targeted Ultra-High-Performance Chromatography Coupled to Mass Spectrometry Analysis of Phenolic Metabolites in Plasma of Elderly Adults
14:39

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Published on: April 22, 2022

Functional Characteristics of Walnut Protein Fractions and Rutin Loading by Albumin.

Yue Wang1, Xiang Li1, Yu Zhou1

  • 1College of Food Science and Technology, Yunnan Agricultural University, Kunming 650201, China.

Foods (Basel, Switzerland)
|June 26, 2026
PubMed
Summary
This summary is machine-generated.

Walnut albumin from Yunnan deep-veined walnuts shows superior functional properties, making it an excellent carrier for encapsulating the active ingredient rutin. This walnut albumin-rutin complex enhances stability and offers high-value utilization potential.

Keywords:
Yunnan deep-vein walnutalbuminfunctional characteristicsrutinwalnut protein fractions

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Area of Science:

  • Food Science and Technology
  • Biomaterials Science
  • Nutritional Biochemistry

Background:

  • Proteins are crucial in food systems and can serve as carriers for bioactive compounds.
  • Yunnan deep-veined walnuts contain diverse protein components with unexplored functional properties.
  • Encapsulation of active ingredients like rutin is vital for enhancing their stability and bioavailability.

Purpose of the Study:

  • To systematically compare the functional properties of major walnut protein components (albumin, globulin, prolamin, glutelin).
  • To screen for protein-based carriers with optimal processing adaptability for encapsulating rutin.
  • To analyze the binding interactions between the selected protein and rutin.

Main Methods:

  • Comparative analysis of protein component functional properties (solubility, emulsification, foaming, gelation).
  • Assessment of processing applicability and antioxidant activity (ABTS assay).
  • Characterization of the walnut albumin-rutin complex (WA@Rut) using FT-IR, fluorescence spectroscopy, molecular docking, molecular dynamics, and SEM.

Main Results:

  • Walnut albumin demonstrated superior functional properties and processing applicability compared to other components.
  • Albumin exhibited excellent amino acid composition and significant antioxidant activity.
  • The WA@Rut complex showed enhanced thermal stability of albumin and improved storage stability of rutin, with rutin binding via hydrogen bonding and electrostatic interactions.

Conclusions:

  • Walnut albumin from Yunnan deep-veined walnuts is a promising functional protein resource with high potential as a carrier material.
  • Albumin enables efficient encapsulation and protection of active ingredients like rutin.
  • This research provides a foundation for the high-value utilization of walnut protein in functional food and nutraceutical applications.