ISHS Acta Horticulturae 553: IV International Conference on Postharvest Science
INFLUENCE OF DELAYED CA STORAGE ON ASCORBIC ACID CONTENT AND BROWN-HEART INCIDENCE IN ‘ROCHA’ PEAR |
| Authors: | A.M.M.B. Morais, M.L. Avelar, A.C. Rodrigues |
| Keywords: | controlled atmosphere, delayed storage, ascorbic acid, brown-heart, pear |
| Abstract:
‘Rocha’, a Portuguese pear variety, is very desired for its dessert quality, high handling and transport resistance, making it suitable for export. This variety may develop internal physiological disorders that appear as core browning and cavities in the cortex tissue. After controlled atmosphere (CA) storage, ‘Conference’ pear shows symptoms of brown-heart and the vitamin C content drops significantly. Ascorbic acid is believed to be a free-radical scavenger and to prevent browning owing to its antioxidant properties. Vitamin C might be considered an indicator of that disorder. The aim of this work was to examine the relationship between delayed CA storage, brown-heart incidence and ascorbic acid in ‘Rocha’ pear. Fruit quality in terms of skin colour was also evaluated during storage. | |
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