ศูนย์นวัตกรรมเทคโนโลยีหลังการเก็บเกี่ยว

Use of differential scanning calorimetry for characterizing fruit respiration under hypoxia.

Rivera Dominguez, M. and Yahia, E. M.

Harvest and postharvest technologies for fresh fruits and vegetables. Year: 1995 Pages: 554-561 Ref: 15 ref.

1995

บทคัดย่อ

Modified and controlled atmospheres with less than or equal to 0.5% O2 and/or more than or equal to 50% CO2 are insecticidal. Differential scanning calorimetry (DSC) was used to characterize the differences in response between avocado cv. Hass and mango cv. Keitt fruits to these atmospheres, and to relate that to the respective sensitivity and tolerance of these 2 fruits to hypoxia. Fresh and lyophilized tissues of fruits stored in air or in an insecticidal atmosphere were scanned at a temperature range of 10-145 deg C at a rate of 10 deg /min. There were qualitative and quantitative differences between thermograms. There were fewer endotherms in thermograms of fresh tissue samples than in lyophilized tissue samples. Avocado thermograms showed a major endotherm at approx equal to 15 deg and 2 minor ones at approx equal to 105-110 deg . In addition, the mango thermograms showed another major endotherm at approx equal to 80 deg . This endotherm was not present in the avocado thermograms and might

represent a contributing factor in the tolerance of mango to insecticidal atmospheres.