Panda, Manoj KumarSingh, Ritu2017-01-192017-01-192011http://krishikosh.egranth.ac.in/handle/1/96997The study was carried out to investigate the effect of different modified atmosphere packaging (MAP) techniques for extending the shelf-life of bell pepper (capsicum annum L.) kept at ambient and 8oC with 75-80% and 85% RH respectively.. MAP carried out consisted of: polyamide 20 μm-PE 70 μm with EVA sealant layer extrusion laminated, film B: polyamide 40 μm – polyethylene 120 μm extrusion laminated and film C: polyamide 30μm- PE 110 μm mit EVA Siegelschicht Extrusions Koschierte Qualitat O2 permeability of 50, 25 and 30 cm3/m2d.bar respectively having Qualitat and 4 gas concentration: (2% O2 + 3% CO2), (3% O2 +3% CO2), (4% O2 +3% CO2) and atmospheric composition. Periodical observations were collected on headspace gases for CO2 and O2 concentration (%), moisture content, weight loss, firmness (kg), colour (L, a, b value), total soluble solid (TSS) and sensory evaluation. It was observed that it took 3-4 days and 11to 12 days to reach equilibrium oxygen concentration of 0.4% for MAP stored at ambient and 8oC respectively. It was also observed that weight loss was minimum in 8oC in comparision to ambient condition. “a”-value was maximum (-11.6) in MAP having O2 permeability of 25 cc/m2 d.bar with initial O2 level of 3%. The maximum (1.173 kg) was observed in MAP having O2 permeability of 30 cc/m2d.bar with initial O2 level of 2%. Total soluble solid was observed to had maximum changes in. MAP having O2 permeability of 30 cc/m2d.bar with initial O2 level of 3% and O2 permeability of 30 cc/m2 d.bar with initial O2 level of 21% while it was minimum in MAP having O2 permeability of 30 cc/m2d.bar with initial O2 level of 3% and O2 permeability of 30 cc/m2 d.bar with initial O2 level of 21% .pH was observed to had changed maximum (2.13) and minimum (4% ) having O2 permeability of 30 and 25 cc/m2 d.bar respectively with initial O2 level of 3% and 4% respectively. It was observed that the samples packed with polyamide 40μm-polyethelene 120μm extruded laminated having O2 permeability of 25 cc/m2 d.bar with initial O2 level of 3%, stored at 8oC had the maximum shelf life of 18 days with overall acceptability quality. Keywords: MAP, O2 permeability, colour, firmness, weight loss, TSS, pH, sensory evaluation, gas concentrationenThesis