4.7 Article

Differences and Similarities in Lipid Composition, Nutritional Value, and Bioactive Potential of Four Edible Chlorella vulgaris Strains

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FOODS
卷 12, 期 8, 页码 -

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MDPI
DOI: 10.3390/foods12081625

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Chlorella vulgaris; lipidomics; polar lipids; PUFAs; antioxidant activity; anti-inflammatory activity

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This study compared the fatty acid and lipid profile of four commercialized strains of Chlorella vulgaris and assessed their antioxidant and anti-inflammatory properties. Results showed differences in lipid composition and fatty acid profile among the strains, with C-Auto having higher lipid content and omega-3 polyunsaturated fatty acid levels, while C-Hetero, C-Honey, and C-White had higher omega-6 polyunsaturated fatty acid levels. All extracts exhibited antioxidant and anti-inflammatory activity, with C-Auto showing the greatest potential. These findings suggest that different strains of C. vulgaris can be selectively utilized as a source of value-added lipids for various food and nutraceutical applications.
The microalga Chlorella vulgaris is a popular food ingredient widely used in the industry, with an increasing market size and value. Currently, several edible strains of C. vulgaris with different organoleptic characteristics are commercialized to meet consumer needs. This study aimed to compare the fatty acid (FA) and lipid profile of four commercialized strains of C. vulgaris (C-Auto, C-Hetero, C-Honey, and C-White) using gas- and liquid-chromatography coupled to mass-spectrometry approaches, and to evaluate their antioxidant and anti-inflammatory properties. Results showed that C-Auto had a higher lipid content compared to the other strains and higher levels of omega-3 polyunsaturated FAs (PUFAs). However, the C-Hetero, C-Honey, and C-White strains had higher levels of omega-6 PUFAs. The lipidome signature was also different between strains, as C-Auto had a higher content of polar lipids esterified to omega-3 PUFAs, while C-White had a higher content of phospholipids with omega-6 PUFAs. C-Hetero and C-Honey showed a higher content of triacylglycerols. All extracts showed antioxidant and anti-inflammatory activity, highlighting C-Auto with greater potential. Overall, the four strains of C. vulgaris can be selectively chosen as a source of added-value lipids to be used as ingredients in food and nutraceutical applications for different market needs and nutritional requirements.

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