Effects of bruising of ‘Pink Lady’ apple under impact loading in drop test on firmness, colour and gas exchange of fruit during long term storage

The bruising phenomenon of apple fruit under impact loading is still a very important problem to be solved in order design optimal harvest and processing systems for ensuring the quality during long-term periods storage. This study focused on deformation simulation apples (cv.’ Pink Lady’) dynamic drop tests describe time-dependent occurrence effect postharvest In study, analytical, experimental methods finite element analysis based explicit dynamics techniques were employed. Three heights (250 mm, 500 mm 750 mm) three materials (structural steel, high-density polyethylene wood) single orientation (transverse) considered. Experimental test, physical chromatographic analyses at time (first testing day) storage 30, 120 210 days realised. Physical revealed that damaged lost greater amount weight when considering increase height. Furthermore, bruised surfaces their luminosity just after test. Ethylene production respiration rates rapidly increased this was correlated with Additionally, material yield stress point as 0.385 MPa results provided useful visuals numerical data related phenomenon. validation setup surface area more accurate measurement than bruise volume evaluating flesh through method-based (average relative difference: 5.5 %).