บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Dynamics of gas exchange and biochemical changes during shelf life of European plums (Prunus domestica cv. Hauszwetsche).

Neeraj B., Lippert F.

5th International Postharvest Symposium . Volume of Abstract . Verona, Italy 6-11 June 2004. page 4

2004

บทคัดย่อ

Dynamics of gas exchange and biochemical changes during shelf life of European plums (Prunus domestica cv. Hauszwetsche).   The rate of respiration and ethylene production in combination with storage temperature are considered as vital processes determining the post-harvest life of fruit. The ripening behavior of European plum fruits is a climacteric type as recently characterized.This makes them highly perishable as the tissues rapidly undergo profound changes in texture and quality resulting in short storage period.

The aim of present study was to obtain a continuos profile of gas exchange processes and related changes in biochemical composition of plum fruits at 20 °C.Rate of oxygen consumption, carbon dioxide production, ethylene and acetaldehyde evolution were monitored o­n a daily basis.Changes in total soluble solids, acidity and carbohydrates were also studied.

Rate of respiration decreased after an initial rise where as respiratory quotient was found increasing in later stages of storage period.A continuous increase in acetaldeyhde evolution was observed.It was interesting to observe a very less change in concentration of total sugars during the period of shelf life study.The results obtained indicate the presence of alternative energy reservoir in plum fruit to support the metabolic processes.Possible role of stimulated ethylene levels in fruit senescence and cell structure break down is hypothesized.