Development of Mixed Fruit Leather and its qualitative Evaluation

Abstract

Mixed fruit (mango, banana and pumpkin) leather (bar) samples were packed in glass bottles and pet jar. The optical density of mixed fruit (mango, banana and pumpkin) leather (bar) increased with increase in the level of banana and mango juice ratio at room temperature storage condition. The moisture content decreased with decrease in the level mixed fruit (mango, banana and pumpkin) leather (bar) and moisture content values of the samples composition 100:0:0, 90:5:5, 80:10:10, 70:15:15, 60:20:20 and 50:25:25 after 90, days of storage were observed as 16.0, 15.5, 16.5, 15.7, 15.3 and 16.5 the sample superior found in glass jar than comparison pet jar. The pH decreased with increase in the level mixed fruit (mango, banana and pumpkin) leather (bar) and pH values of the samples composition 100:0:0, 90:5:5, 80:10:10, 70:15:15, 60:20:20 and 50:25:25 after 90, days of storage were observed as 0.61 , 0.60, 0.61 , 0.62, 0.65 and 0.67 in glass jar and 0.61 , 0.62, 0.61 , 0.64, 0.65 and 0.67 in pet jar respectively at room temperature conditions. The vitamin-C (ascorbic acid) ot the mixed fruit (mango, banana and pumpkin) leather (bar) samples were decreased during storage period. It might be due to the oxidation or irreversible conversion of L-ascorbic acid into dehydro ascorbic acid in the presence of enzyme ascorbic acid oxidase (ascorbinase) caused by trapped or residual oxygen in the glass jar and pet jar. The minimum ascorbic acid of the sample of mixed fruit (mango, banana and pumpkin) leather (bar) 100:0:0, 90:5:5, 80:10:10, 70:15:15, 60:20:20 and 50:25:25 after 90 days of storage were observed as 35.30, 35.1 0, 38.1 0, 30. 75, 30.15 and 35.30 in glass jar and 35.00, 32.35, 38.15, 32.45, 40.15 and 35.00 in pet jar respectively at room temperature condition. The higher score of overall acceptability was 8.5 for the fresh sample 80:10:10 in glass jar and the minimum score awarded for overall acceptability was 5.2 for the mixed fruit (mango, banana and pumpkin) leather (bar) sample 80:1 O: 10 in glass jar at room tern pe rature condition. However, the ove rail acceptability of beverage decreased with increase in storage period.