The in-pack gaseous composition of O2 and CO2 were analyzed
in all MA packages during storage using a portable headspace
gas analyzer (Model GS3M, Systech Instruments Ltd., UK). The
apparatus uses an electrochemical and an infrared sensor to
evaluate the headspace gas concentration and express in
percent. The gas analyzer was calibrated with reference gases
and the sensor probe was inserted in the headspace of
polymeric package and sensor signals were converted to gas
concentration values of O2 and CO2, which were directly read
on the digital display panel. The respiration rate (RR) of fruits
in terms of CO2 liberated (ml/kg-h) were determined in all
treatment packages during storage as per the method adopted
by Singh, Kumar, and Kulkarni (2012).