บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Time-temperature-integrators (TTI) to control the distribution chain of horticultural products.

Bobelyn E.

5th International Postharvest Symposium . Volume of Abstract . Verona, Italy 6-11 June 2004, p42.

2004

บทคัดย่อ

Time-temperature-integrators (TTI) to control the distribution chain of horticultural products. Monitoring quality of horticultural produce throughout the distribution chain gas become an important issue during the last few decades.A tool for achieving this goal is a time-temperature integrator (TTI).TTI’ s are small, inexpensive devices that show a time-temperature dependent, easily measurable and irreversible change, that can be correlated to changes of quality of a food undergoing the same time-temperature exposure.The Belgian Fruit and Vegetable auctions would like to introduce TTI’ s in their HACCP-system to control temperature abuse.

A first aim of this research was to carry out a feasibility study to evaluate the potential of TTI’ s to monitor the cooling efficiency of horticultural products after arrival at the auction.The kinetic parameters of the quality loss of mushrooms, lettuce and strawberries were determined during storage at different temperatures.Therefore objective measurements of several quality attributes were carried out at regular time intervals.First order reaction models of the quality loss, based o­n the Arrhenius equation, were fitted to the data.The acceptability of the quality was determined by experts.Based o­n these results a selection of commercial available TTI’ s with the same kinetics as the products was made.To evaluate the TTIperformance a similar kinetic study was performed for the selected TTI’ s as for the products itself.The response of the TTI’ s was measured during constant and variable temperature profiles with a spectrophotometer.

The results indicated the usefulness of TTI’ s in the distribution chain of horticultural produce.As the first aim was achieved successfully the second aim of the research was to implement the TTI’ s in the auctions.TTI’ s were put o­n the products after arrival at the auction and they were removed after cooling overnight.The response of the TTI’ s was evaluated.