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Modulation of flavanone and furocoumarin levels in grapefruits ( Citrus paradisi Macfad.) by production and storage conditions
- Source :
- Food Chemistry. 196:374-380
- Publication Year :
- 2016
- Publisher :
- Elsevier BV, 2016.
-
Abstract
- Grapefruits grown under organic or conventional systems were analyzed for 6,7-dihydroxybergamottin (DHB) and flavanones using HPLC, and DPPH activity and ORAC using a micro-plate reader. Grapefruits harvested in November 2008 (E-1) and February 2010 (E-2) were stored at room temperature (RT) and 9 °C for four weeks. Higher levels of DHB were observed in conventional grapefruits during the second (4.7 ± 0.2 μg/g), third (1.5 ± 0.2 μg/g) and fourth (2.5 ± 0.2 μg/g) week of storage at room temperature in E2. Among flavonoids analyzed, narirutin (666.7 ± 33.9 μg/g), neohesperidin (17.5 ± 1.3 μg/g), didymin (75.5 ± 5.6 μg/g) and poncirin (130.8 ± 10.4 μg/g) levels were significantly higher (P⩽0.05) in organic grapefruits over conventional grapefruits at harvest and storage in E-1. Although DPPH levels were moderately correlated with grapefruit flavanone content, variability in the individual flavanone activity was pronounced, resulting in non-significant differences in antioxidant activity between organic and conventional grapefruits.
- Subjects :
- 0301 basic medicine
Stereochemistry
DPPH
Disaccharides
High-performance liquid chromatography
Antioxidants
Analytical Chemistry
03 medical and health sciences
chemistry.chemical_compound
0404 agricultural biotechnology
Citrus paradisi
Food Preservation
Furocoumarins
Food science
Chromatography, High Pressure Liquid
Flavonoids
Poncirin
Neohesperidin
Organic Agriculture
030109 nutrition & dietetics
Narirutin
Chemistry
Furocoumarin
Agriculture
04 agricultural and veterinary sciences
General Medicine
040401 food science
Fruit
Flavanones
Flavanone
Food Science
Subjects
Details
- ISSN :
- 03088146
- Volume :
- 196
- Database :
- OpenAIRE
- Journal :
- Food Chemistry
- Accession number :
- edsair.doi.dedup.....4221af6074a7028fd3a29a001c7b20a6