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Physicochemical and antioxidant properties of pectin fractions extracted from lemon (Citrus Eureka) peels.
- Source :
-
International Journal of Biological Macromolecules . May2024:Part 2, Vol. 268, pN.PAG-N.PAG. 1p. - Publication Year :
- 2024
-
Abstract
- Pectin, a natural polysaccharide, holds versatile applications in food and pharmaceuticals. However, there is a need for further exploration into extracting novel functional fractions and characterizing them thoroughly. In this study, a sequential extraction approach was used to obtain three distinct lemon pectin (LP) fractions from lemon peels (Citrus Eureka): LP extracted with sodium acetate (LP-SA), LP extracted with ethylenediaminetetraacetic acid (LP-EDTA), and LP extracted with sodium carbonate and sodium borohydride (LP-SS). Comprehensive analysis revealed low methyl-esterification in all fractions. LP-SA and LP-SS displayed characteristics of rhamnogalacturonan-I type pectin, while LP-EDTA mainly consisted of homogalacturonan pectin. Notably, LP-SA formed self-aggregated particles with rough surfaces, LP-EDTA showed interlocking linear structures with smooth planes, and LP-SS exhibited branch chain structures with smooth surfaces. Bioactivity analysis indicated that LP-SA had significant apparent viscosity and ABTS radical scavenging activity, while both LP-EDTA and LP-SS showed excellent thermal stability according to thermogravimetric analysis (TGA). Furthermore, LP-SS exhibited remarkable gel-forming ability and significant hydroxyl free radicals scavenging activity. In conclusion, this study presents a novel method for extracting various lemon pectin fractions with unique structural and bioactive properties, contributing insights for advanced applications in the food and pharmaceutical sectors. • Sequential extraction from lemon (Citrus Eureka) peels yields three unique pectin fractions in distinct solvents: LP-SA, LP-EDTA, and LP-SS, each with distinct physicochemical properties. • LP-SS demonstrates superior gel-forming ability and notable antioxidant bioactivity. • LP-SA is ideal for food thickening, whereas LP-EDTA's homogalacturonan richness indicates potential for drug delivery. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 01418130
- Volume :
- 268
- Database :
- Academic Search Index
- Journal :
- International Journal of Biological Macromolecules
- Publication Type :
- Academic Journal
- Accession number :
- 177353518
- Full Text :
- https://doi.org/10.1016/j.ijbiomac.2024.132014