JHALEGAR, MD. JAMEELS. L., JAGADEESHMETI, SHANKARA.G., BABUPADASHETTI, BASAVARAJGIDAGIRI, PRAVEEN2020-09-152020-09-152019-08UHS17PGM920https://krishikosh.egranth.ac.in/handle/1/5810151319The investigation entitled “Studies on zeolite-LDPE composite bags to extend the shelf life of pomegranate and lime fruits” was carried out to find out the effective packaging material to extend the shelf life of pomegranate and lime fruits at the Department of Post Harvest Technology, College of Horticulture, Bagalkot during the year 2018-19. In this experiment, seven packaging materials (T1-Zeolite-LDPE composite bag, T2-Silver-zeolite-LDPE composite bag, T3-Chlorine-zeolite-LDPE composite bag, T4- Zeolite-LDPE composite bag + CFB, T5- Silver-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 pomegranate and lime fruits under ambient (Pomegranate- 31±1 °C and Lime- 33±1 °C ) and refrigerated (Pomegranate-7 °C and Lime- 10 °C) conditions. In pomegranate under both ambient storage (AS) and refrigerated storage (RS), fruits packed in T6 showed maximum TSS (AS- 16.16 °B, RS- 16.51 °B), titratable acidity (AS- 0.33 %, RS- 0.35 %), juice percentage (AS- 77.75 %, RS- 79.95 %), colour values (AS- L*-39.02, a*-31.14, b*-21.10, RS- L*-40.21, a*-36.58, b*-24.64), shelf life (AS- 22.81 days, RS- 118.22 days) and minimum TSS/acid ratio (AS- 48.47, RS- 47.63), PLW (AS- 24.06 %, RS- 13.89 %), maximum respiration rate in AS- 8.25 ml CO2/kg/hr and minimum respiration in case of RS- 3.21 ml CO2/kg/hr and highest sensory scores among the treatments during storage of 25 days in AS and 120 days in RS conditions. In lime under both ambient storage (AS) and refrigerated storage (RS), fruits packed in T6 showed maximum titratable acidity (AS- 7.33 %, RS- 7.01 %), juice percentage (AS- 50.01 %, RS- 51.24 %), respiration rate (AS- 11.16 ml CO2/kg/hr, RS- 7.02 ml CO2/kg/hr), texture (AS- 35.27 N, RS- 44.15 N), colour values (AS- L*-41.80, b*-39.12, RS- L*-44.22, b*-40.46), shelf life (AS- 11.55 days, RS- 76.44 days) and minimum TSS (AS- 7.20 °B, RS- 6.47 °B), TSS/acid ratio (AS- 0.98, RS- 0.94), PLW (AS- 17.04 %, RS- 14.21 %), a* values (AS- 4.07, RS- 3.33), fruit decay (AS- 20.74 %, RS- 24.11 %) and highest sensory scores among the treatments during storage of 12 days in AS and 80 days in RS conditions. From this investigation, it can be concluded that chlorine-zeolite-LDPE composite bags with CFB boxes are found to be economically viable to extend shelf-life of pomegranate with additional 10 days in AS and 59 days in RS compared to control (AS- 13 days, RS- 59 days) and in case of lime fruits the same packing material extended shelf-life for additional 7 days in AS and 40 days more in RS compared to control (AS- 5 days, RS- 36 days) which is a intervention in farmers practice of packing of lime fruits in gunny bags.en-USThesis