TY  - THES
T1  - Quality differences of vapor-heat treated and irradiated solo papayas (Carica papaya L. Cultivar solo)
A1  - David, Grace C.
A2  - De Leon, Sonia Y.
LA  - English
UL  - https://ds.mainlib.upd.edu.ph/Record/UP-99796217605109564
AB  - ABSTRACT The study determined the difference in the physicochemical characteristics of irradiated and vapor-heat treated solo papayas. Solo papayas were irradiated at 0.25 kGy and 0.5 kGy doses and were stored at 28-32°C. Other samples of the solo papayas were treated with vapor-heat and stored in the same condition as the irradiated samples. The physicochemical properties such as the soluble solids and the acidity of the samples were monitored consequently for four days until the samples reached the mature ripe stage. Peel color development and hardness of the samples were observed a day and four days after the treatment while the sensory evaluations were conducted two days and four days after the treatment. The results of the analysis of variance showed that the soluble solids and acidity of the samples were not significantly different from each other. In the sensory evaluation the second set of characteristic evaluation showed a significant different in the sweetness of the 0.5 kGy sample from the other samples and in the flavor of the vapor-heat treated sample from the irradiated and control samples. In the first set of acceptability evaluation the overall and texture of the vapor-heat treated samples were found to be significantly different from the other samples, as well as the color of the control sample and the flavor of the sample irradiated at 0.25 kGy. They also had the highest mean range, which implied that they were more acceptable. In the second set of the acceptability evaluation the odor and texture of the samples irradiated at 0.5 kGy were found to be significantly different from the other samples while the sweetness of the irradiated sample was significantly different from the control and vapor-heat treated samples. However, the color of the sample irradiated at 0.5 kGy and the control sample were significantly different from the ample irradiated at 0.25 kGy and the vapor-heat treated sample.
NO  - Thesis (BSFT)--University of the Philippines Diliman
CN  - LG 993.5 2002 F66 D38
KW  - Papaya.
KW  - Fruit : Preservation.
ER  -