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Lipo-Dipeptide as an Emulsifier: Performance and Possible Mechanism
Wenhui Lv, Tan Hu, Ahmed Taha1
1Department of Food Science, Faculty of Agriculture (Saba Basha) , Alexandria University , Alexandria 21531 , Egypt.
Journal of Agricultural and Food Chemistry
|May 24, 2019
Summary
A novel lipo-dipeptide, C13-lysine-arginine (C13-KR), demonstrates superior emulsifying capabilities in acidic conditions. This new emulsifier offers enhanced stability and reduced interfacial tension compared to traditional options.
Area of Science:
- Food science and technology
- Colloid and surface chemistry
Background:
- Traditional emulsifiers like whey protein isolate and Tween 80 have limitations.
- Developing effective emulsifiers for acidic conditions is crucial for various food applications.
Purpose of the Study:
- To design and evaluate a novel lipo-dipeptide, C13-lysine-arginine (C13-KR), as an emulsifier for acidic conditions.
- To compare the emulsifying properties of C13-KR with traditional emulsifiers.
Main Methods:
- Synthesis and characterization of the lipo-dipeptide C13-KR.
- Preparation and analysis of C13-KR emulsions.
- Comparison of emulsion properties (mean size, zeta potential, stability) with whey protein isolate and Tween 80 emulsions.
- Measurement of interfacial tension at the oil/water interface.
Main Results:
- C13-KR emulsions exhibited the minimum mean particle size and the highest zeta potential (+100 mV).
- C13-KR emulsions demonstrated superior stability against high salt concentrations and temperatures.
- C13-KR significantly reduced interfacial tension, reaching a value of 3.6 mN/m at 0.5% w/v.
Conclusions:
- The lipo-dipeptide C13-KR shows excellent potential as an emulsifier for producing stable emulsions under acidic conditions.
- C13-KR offers advantages in particle size, stability, and interfacial tension reduction over conventional emulsifiers.
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