| Popis: |
Basic aims of this research are determination of effects of medium temperature and mechanical damage that can be occurred due to postharvest processes of CO2 production amount of tomato by using static measurement method and calculation of respiration rate and dry matter loss by using CO2 production results and finally determination of necessary data to guess shelf life of these products. In addition to these, total weight losses and changes in hardness of fruits were also determined. As a plant material tomato that have high respiration rate after harvesting namely climateric fruits was selected. Experiments were performed in conditions that 2 different temperature (2 +/- 2, 22 +/- 2) and 5 different damage levels (not damaged, peeled of skin into 1 cm(2) area, impacted from 10, 20 and 30 cm drop heights). According to results increasing of impact height increased bruising volume values. Either in room condition or in cool air condition CO2 production amount, respiration rate and dry matter loss values of undamaged tomato samples were found rather lower compared to peeled and damaged samples. Increasing of medium temperature highly increased these values. Either in room condition or in cool air condition respiration rate and dry matter loss of peeled samples were found rather higher compared to others. Samples impacted from 30 cm, 20 cm and 10 cm were followed this samples, respectively. Considering the weight losses, it is seen that the maximum weight losses in all tested materials before and after measurements were found in peeled fruits in parallel with all other results. It was determined that the effects of either medium temperature or bruising levels on the respiration rate were found significant at 0,01 importance level. It was determined that fruit hardness of peeled and impacted from different heights rather decreased after experiments. |
