l - 00058 - which is turned on by many factors that affect...

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18 Changes Color Chlorophyll " Carotenoids # Flavonols Anthocyanins Changes in flesh and skin color Flavor Organic acid " Tanins " Sugars # # sweeteness " acidity " bitterness Aroma Aroma compounds # Aroma development Texture Nutritive Value Protopectins " (Cell wall) Starch " softening Solublization of Pectins ( break down of cel wal s) # Sugars # Vitamins # Increased bioavailabliity STOP - Photosynthesis - Intake of water, roots - Hormone Transport POST-HARVEST CHANGES CONTINUE - Lost of water - Respiration - Degradation $ Ripening ??? The Ethylene production cycle of fruit can be considered a "switch"
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Unformatted text preview: which is turned on by many factors that affect post harvest handling. Once "turned on" it cannot be "turned off". Climacteric Fruit -Shows an increase of the respiration rate with ripening. This is ethylene dependant and these can continue to ripen after harvesting. Non Climacteric Fruit – •Their ripening dose not depend on ethylene production. •These fruits need to stay on the plant to ripen. Removal of Ethylene from the atmosphere around the climacteric fruits is a way of preventing the over-ripening of Ethylene sensitive fruits. RIPENNING...
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