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Fatty Acids of Ten Commonly Consumed Pulses
William Craig Byrdwell1, Robert J Goldschmidt1
1Methods and Application of Food Composition Laboratory, Agricultural Research Service, U.S. Department of Agriculture, Beltsville, MD 20705, USA.
Molecules (Basel, Switzerland)
|November 11, 2022
Summary
This study analyzed the fatty acid (FA) profiles of ten common pulses using gas chromatography. Results show significant variations in FA composition, suggesting potential for targeted breeding to enhance nutritional value.
Area of Science:
- Agricultural Science
- Food Science
- Analytical Chemistry
Background:
- Pulses are a vital food source, but their nutritional profiles, particularly fatty acid (FA) content, are not fully characterized.
- Understanding FA composition is crucial for optimizing pulse nutritional value and potential health benefits.
Purpose of the Study:
- To comprehensively analyze and compare the fatty acid compositions of ten commonly consumed pulse varieties.
- To identify variations in FA profiles that could inform breeding programs for improved nutrition.
Main Methods:
- Lipid extraction from ground pulses using chloroform/methanol.
- Quantification of fatty acids by gas chromatography-flame ionization detection (GC-FID).
- Structural confirmation of fatty acids using gas chromatography-mass spectrometry (GC-MS) and principal component analysis (PCA).
Main Results:
- Pulses exhibited diverse fatty acid profiles, clustering into three groups based on dominant fatty acids (linolenic acid, 16:0, or oleic/linoleic acids).
- Average composition across ten pulses: 46.1% linoleic acid (18:2), 22.7% oleic acid (18:1), 18.0% palmitic acid (16:0), and 7.6% linolenic acid (18:3).
- Significant variations were observed, with linoleic acid ranging from 26.0% (black beans) to 48.4% (garbanzo beans) and linolenic acid from 2.2% (garbanzo beans) to 38.8% (pinto beans). Oxo-fatty acids were also detected.
Conclusions:
- Fatty acid composition varies considerably among commonly consumed pulses.
- These compositional differences present opportunities for selective breeding and genetic modification to tailor pulse FA profiles for enhanced nutritional benefits.
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