ศูนย์นวัตกรรมเทคโนโลยีหลังการเก็บเกี่ยว

Fruit quality monitoring using a multi-gas sensor

M. Zude, C. Hielscher-Toelzer, M. Linke, B. Herold

Proceedings of 26th International Horticultural Congress. Volume of Abstract . Toronto, Canada, 11-17 August, 2002. Abstract S09-P-9. pp. 230.

2002

บทคัดย่อ

Fruit quality determination in closed storage rooms is of economic importance in order to decide on the potential storage duration.Various technologies have currently been investigated to provide data on the fruit ripening process in the storage container.However, there is no application available on the market so far, but headspace analysis measuring the gas exchange rate of volatile compounds may provide reasonable data to estimate fruit quality changes during storage.A multigas sensor (Jensensorik, Germany) was tested and adapted for long-term monitoring of fruit quality in closed storage rooms.Particular problems appear from the temperature effect on the calibration model for ripeness prediction.This physiological phenomenon was addressed by parallel measurements of the gas exchange rate using the sensor, as well as gas chromatography.The data, thus obtained were used to calculate the Q10 factor of aroma compounds using the equation Q10 = [k1/k2} ^exp {10/ (T2-T1)}. The ripeness models for Malus x domestica cvs. ‘Elstar’ and ‘Jonagold’ apple fruit were improved by insertion of the relevant Q 10 factor.