The avocado has a high rate of postharvest respiration and limited shelf life and avocado fruit is climacteric,differs from most other fruits in that ripening does not normally take place on the tree,Fruit which has become almost ripe on the tree and avocado fruit was subjected to vacuum while submerged in the liquid to be infiltrated. The most obvious feature of avocado fruit ripening is softening firmness differences in avocado fruits are good predictors of the difference in their ripening stages, since the softer fruit will fully ripen, sooner than the harder fruit. Low temperature storage is the most commonly used method of extending storage life in avocado. The use of storage conditions containing high concentrations of carbon dioxide and low concentrations of oxygen coupled with low temperatures has proven successful in delaying ripening and senescence in many fruits. Avocado fruits even at relatively low temperatures, maturation processes slowly continue so that fruits ultimately become ripe and finally over-ripe, Avocados may ripen fairly quickly even at a storage temperature of 10°C