Open AccessOptimization of Postharvest Storage Conditions to Maintain Fruit Quality and Health Maintaining Properties of Grapefruit
Author(s) -
Bhimanagouda S. Patil,
Ron Porat,
G.K. Jayaprakasha,
Kotamballi N. Chidambara Murthy
Publication year - 2010
Language(s) - English
Resource type - Reports
DOI - 10.32747/2010.7613879.bard
Subject(s) - chemistry , citrus paradisi , furocoumarins , cold storage , food science , antioxidant , oxygen radical absorbance capacity , conditioning , postharvest , grapefruit juice , horticulture , biochemistry , antioxidant capacity , rutaceae , pharmacology , photochemistry , medicine , biology , statistics , mathematics , pharmacokinetics
Antioxidant activity of fruits is gaining wide interest among consumers due to its importance in counteracting oxidative stress, free radicals and preventing DNA damage. Oxygen radical absorbance capacity (ORAC) assay is one of the commonly used assays to measure the antioxidant activity, which is based on hydrogen atom transfer mechanism. Furocoumarins present in grapefruit are reported to have antiproliferative activity, induce GST activity, inhibit biofilm formation and increase bioavailability of drugs. In the present project ORAC values were measured of Star Ruby grapefruit undergone ethylene degreening treatment, cold storage and temperature conditioning treatment, and modified atmosphere packaging which were stored at different temperatures for prolonged period. In addition, furocoumarins were quantified in Star Ruby grapefruits from cold storage and conditioning experiment conducted in Israel. Conditioning treatment is practiced prior cold storage to reduce chilling injury in grapefruits during cold storage for prolonged period. Levels of 6,7-dihyrdoxy bergamottin decreased during storage period in all three treatments.