Simulating calcium dip effect on post harvest quality of peaches.
Aggarwal B., Prussia S.E., Lysiak G., Florkowski W.J.
5th International Postharvest Symposium . Volume of Abstract . Verona, Italy 6-11 June 2004,p 43.
2004
บทคัดย่อ
Peaches of ‘Harvester’ and ‘Juneprince’ cultivars were dipped in calcium chloride solution just after harvest and its effect on post harvest quality parameters of firmness and mass was investigated.The control peaches were not dipped.Peaches were stored at 0, 4, 10, and 22 °C at RH of 95+1% for three weeks.Mass and firmness of the stored peaches were measured at regular time internals.Firmness was measured using non-destructive compressive test using Instronâ testing machine.A replication was carried out and models were developed from the slopes of firmness and mass values plotted against time for the five temperatures.The models were validated using another harvest.The models were further converted into a user-friendly computer simulation for predicting peach quality during distribution.The simulation predicts the quality parameters at each link of a typical supply chain.The temperature profile, percent firmness and percent mass for a system with or without the calcium dip are simulated and plotted upon data entry.
The simulation enables farmers as well as owners of various links of the supply chain to see graphically the effects of their actions of dipping in calcium and storing at various time-temperature combinations.The producers can quantify the benefit of lowering temperatures during cooling delays and of dipping in calcium.It can act as a decision support system to enable the producers to take decisions regarding calcium dip and storage conditions in conjunction with other economic considerations.