Influence of gamma irradiation on volatile flavour profiles and physicochemical attributes of navel oranges (Citrus sinensis L.) under post-irradiation storage

Ameer K., . and Jo Y., . and Chung N., . and Kwon J. H., . Influence of gamma irradiation on volatile flavour profiles and physicochemical attributes of navel oranges (Citrus sinensis L.) under post-irradiation storage. pp. 1035-1043. ISSN 2231-7546

The effects of irradiation at 0.5 “ 2.0 kGy on physicochemical and volatile characteristics of navel oranges stored at 4C were investigated. Fruit firmness was maintained when oranges were irradiated at 0.5 kGy whereas samples irradiated at higher intensities exhibited lower firmness. The total soluble solids titratable acidity vitamin C content total phenolic content and radical-scavenging activity were influenced by irradiation. However at 0.5 and 1.0 kGy these parameters were similar to those in non-irradiated control samples. These quality properties showed a significant decrease throughout the storage period. Principal component analysis (PCA) of the volatile pattern data obtained using electronic nose distinguished irradiated oranges from control fruits even after prolonged storage. The main volatile compounds as determined using Kovats retention indices were aldehydes and acetic esters at varying concentrations. Overall irradiation doses of 1.0 kGy had negligible effects on the quality properties of imported oranges. Appropriate dose range of gamma irradiation (0.5 “ 1.0 kGy) proved very efficient and the sensorial and nutritional qualities of navel oranges were maintained during extended storage of oranges at 4C. These findings may be helpful in meeting guidelines of exporting irradiated foodstuffs especially navel oranges to facilitate international trade.

Full text available from: Official URL: http://www.ifrj.upm.edu.my/26%20(03)%202019/33%20-...

Abstract

The effects of irradiation at 0.5 “ 2.0 kGy on physicochemical and volatile characteristics of navel oranges stored at 4C were investigated. Fruit firmness was maintained when oranges were irradiated at 0.5 kGy whereas samples irradiated at higher intensities exhibited lower firmness. The total soluble solids titratable acidity vitamin C content total phenolic content and radical-scavenging activity were influenced by irradiation. However at 0.5 and 1.0 kGy these parameters were similar to those in non-irradiated control samples. These quality properties showed a significant decrease throughout the storage period. Principal component analysis (PCA) of the volatile pattern data obtained using electronic nose distinguished irradiated oranges from control fruits even after prolonged storage. The main volatile compounds as determined using Kovats retention indices were aldehydes and acetic esters at varying concentrations. Overall irradiation doses of 1.0 kGy had negligible effects on the quality properties of imported oranges. Appropriate dose range of gamma irradiation (0.5 “ 1.0 kGy) proved very efficient and the sensorial and nutritional qualities of navel oranges were maintained during extended storage of oranges at 4C. These findings may be helpful in meeting guidelines of exporting irradiated foodstuffs especially navel oranges to facilitate international trade.

[error in script]

Item Type:	Article
AGROVOC Term:	Citrus sinensis
AGROVOC Term:	Citrus
AGROVOC Term:	Oranges (not otherwise specified)
AGROVOC Term:	Gamma irradiation
AGROVOC Term:	Storage
AGROVOC Term:	Physicochemical properties
AGROVOC Term:	Volatile compounds
AGROVOC Term:	Flavour compounds
AGROVOC Term:	Firmness
AGROVOC Term:	Vitamin c
Depositing User:	Mr. AFANDI ABDUL MALEK
Last Modified:	24 Apr 2025 00:54
URI:	http://webagris.upm.edu.my/id/eprint/8273

Actions (login required)

View Item