S. L., JAGADEESHPALLI, VENKATA SANTHOSH KUMARD. L., RUDRESHJHALEGAR, MD JAMEELPADASETTI, BASAVARAJTERDAL, DEEPA2020-09-292020-09-292019-07UHS17PGM919https://krishikosh.egranth.ac.in/handle/1/5810152033An experiment entitled “studies on zeolite-LDPE composite bags to extend shelf life of banana and sapota fruits was conducted in the Department of Post-harvest Technology, College of Horticulture, University of Horticultural Sciences, Bagalkot during the year 2018-19. In this experiment, seven packaging treatments (T1-Silver-zeolite-LDPE composite bag, T2-Zeolite-LDPE composite bag, T3-Chlorine-zeolite-LDPE composite bag, T4-Silver-zeolite-LDPE composite bag + CFB, T5-Zeolite-LDPE composite bag + CFB, T6-Chlorine-zeolite-LDPE composite bag + CFB and T7-Only CFB) were compared with control (T8) to know their efficacy in extending shelf life of banana and sapota fruits under ambient and refrigerated (13°C) conditions. Under ambient conditions, bananas packed in T6 showed significantly minimum TSS/acid ratio (55.68), physiological loss in weight (PLW) (4.31%), disease score (41.03%) and maximum titratable acidity (0.38%) and shelf-life (6.00 days). But, banana fruits did not show significant differences regarding, TSS (°B), firmness (N), respiration rate (ml CO2/Kg/hr), pulp to peel ratio, instrumental colour values (L*, a*, b*) and sensory scores among the treatments during storage of 6 days. While under refrigerated condition bananas packed in T6 showed significantly minimum TSS/acid ratio (52.07), respiration rate (156.1 ml CO2/Kg/hr), physiological loss in weight (PLW) (12.91%), instrumental colour values L* (83.1), a* (-7.2), b*(59.4), disease score (22.91%) and maximum titratable acidity (0.42%), firmness (6.12 N), shelf-life (18.00 days) and sensory scores. But, did not show significant differences regarding, TSS (°B) and pulp to peel ratio among the treatments during storage of 21 days. Under ambient conditions, sapotas packed in T6 showed significantly minimum TSS/acid ratio (65.94), physiological loss in weight (PLW) (11.15%), disease score (28.14%) and maximum titratable acidity (0.38%) and shelf-life (4.66 days). But, sapota fruits did not show significant differences regarding, TSS (°B), firmness (N), respiration rate (ml CO2/Kg/hr), instrumental colour values (L*, chroma and hueangle) and sensory scores among the treatments during storage of 6 days. While under refrigerated condition sapotas packed in T6 showed significantly minimum TSS/acid ratio (58.83), respiration rate (164.1ml CO2/Kg/hr), physiological loss in weight (PLW) (12.05%), instrumental colour values L* (45.6), chroma (27.8), hueangle (39.1), disease score (24.29 %) and maximum titratable acidity (0.42%), firmness (5.91 N), shelf-life (17.66 days) and sensory scores. But, did not show significant differences regarding, TSS (°B) among the treatments during storage of 21 days. Zeolite-LDPE composite bags with or without CFB boxes were not found to be economically viable to extend shelf-life of fruits under prevailing ambient conditions during the course of study. But, under refrigerated condition, the treatment T6 yielded an additional shelf-life of 6 days and 8 days over control in banana and sapota respectively.EnglishThesis