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Formation and Applications of Typical Basic Protein-Based Heteroprotein Complex Coacervations.

Yufeng Xie^1,2, Qingchen Liu¹, Yubo Ge¹

¹College of Food Science and Engineering, Harbin University, Harbin 150086, China.

Foods (Basel, Switzerland)

|October 26, 2024

Summary

Basic proteins like lactoferrin and lysozyme form heteroprotein complex coacervation (HPCC) with acidic proteins. This review explores HPCC formation factors and applications in functional foods.

Keywords:

basic protein complex coacervation heteroproteins protein interactions

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Area of Science:

Food Science and Technology
Biochemistry
Materials Science

Background:

Basic proteins (lactoferrin, lysozyme, gelatin) interact with acidic proteins (e.g., lactoglobulin, ovalbumin, casein) to form supramolecular structures.
This interaction facilitates heteroprotein complex coacervation (HPCC), a promising technology for various applications due to the inherent properties of these proteins.

Purpose of the Study:

To review the structure, properties, and preparation of key basic proteins.
To examine factors influencing HPCC formation, including pH, ionic strength, and protein concentrations.
To discuss the diverse applications of HPCCs derived from these basic proteins.

Main Methods:

Comprehensive literature review on basic protein properties and HPCC formation.
Analysis of internal and external factors affecting HPCC, such as pH, ionic strength, mixing ratio, total protein concentration, temperature, and protein characteristics.
Exploration of HPCC applications including encapsulation, emulsion stabilization, separation, nanogel formation, and infant formula development.

Main Results:

Identified key factors (pH, ionic strength, concentration, temperature) that govern HPCC formation.
Detailed the successful application of HPCCs in areas like bioactive molecule encapsulation and emulsion stabilization.
Highlighted the potential for HPCCs in protein separation, nanogel fabrication, and specialized food formulations.

Conclusions:

Heteroprotein complex coacervation using basic proteins offers significant potential for developing advanced functional food products.
Understanding and controlling HPCC formation factors are crucial for optimizing its application in food systems.
HPCC technology presents new avenues for enhancing nutritional profiles and functional attributes of food products.