Antioxidant properties of fresh and processed Citrus aurantium fruit

Edible components of Citrus aurantium (bitter orange) fruit i.e. whole fruit, separated peel and pulp, and processed preserved products, namely salt pickle, chilli pickle, and sweet preserve were analyzed for antioxidant potential by various in vitro assays. The antioxidants components were extracte...

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Bibliographic Details
Published in:Cogent food & agriculture 2016-12, Vol.2 (1)
Main Authors: Divya, Prakash J., Jamuna, Prakash, Jyothi, Lakshmi A.
Format: Article
Language:English
Subjects:
Antioxidants
Aqueous solutions
bitter orange
Citrus aurantium
Citrus fruits
Citrus limetta
free radical scavenging activity
Fruits
hydroxyl radical
Hydroxyl radicals
Lipid peroxidation
Lipids
Oranges
Peroxidation
phenolics
Phenols
phosphomolybdenum assay
pickle
preserve
Pulp
reducing power
Regression analysis
Scavenging
Stored products
TBA assay
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Summary:Edible components of Citrus aurantium (bitter orange) fruit i.e. whole fruit, separated peel and pulp, and processed preserved products, namely salt pickle, chilli pickle, and sweet preserve were analyzed for antioxidant potential by various in vitro assays. The antioxidants components were extracted in different media and freeze dried. Methanol and aqueous media were comparatively more effective in extracting the antioxidant components. The total phenol content of the extracts ranged from 2.5 to 22.5 mg/g and 5.0 to 45.0 mg/g of pulp and peel fragments, respectively. The fruit components exhibited proton radical, oxyradical, and hydroxyl radical scavenging abilities and were effective in preventing lipid peroxidation. Regression analysis showed positive association between total phenolics and different antioxidant assays. In processed products, there was an initial decrease in antioxidant capacity, which showed an increase on storage. In conclusion, bitter orange exhibited high antioxidant capacity which was retained even in processed and stored products.
ISSN:2331-1932
2331-1932
DOI:10.1080/23311932.2016.1184119