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CONTROL ATMOSPHERE [ (A/ CAM) } (BENEFITS EFFECT OF CA (retardation of…
CONTROL ATMOSPHERE [ (A/ CAM) }
involving maintaining atmospheric composition that different from air composition
oxygen is low until 8% and carbon dioxide high 1% used
MAJOR CLASSES OF COMMODITY CAN BE STORED IN CONTROLLED ATMOSPHERE
DRY COMMODITIES (EX : legumes, oil seed, grain)
-to control insect pest
-atmosphere can be created by :-
adding pure gass CO2 / N / low of N exhaust of hydrocarbon combustion
use natural effects of respiration. to low oxygen and high carbon dioxide (hermetic storage)
FRESH FRUIT (EX : apple and pears)
combination of altered atmospheric condition and low temperature allow prolonged storage with only a slow loss of quality
CA= storage technique level of oxygen low and carbon dioxide is high
quality and freshness of fruit and vegetables are retained under CA without use only chemicals
BENEFITS EFFECT OF CA
retardation of senenscene and associated biochemical and physiological changes
slowly down rate of respiration, ethylene production, softening and compositional changes
reduction of sensitivity to ethylene action at o2 level 1 %
reducing of physiological disorder (ex : chilling injury of avocado and storage disorder (include scald of apple)
direct/indirect effect on post harvest pathogen and consequently decay incidence and severity
meaning = agricultural storage method
atmosphere which O2, Co2 and N concentration as well as temperature and humidity are regulated