A STUDY ON THE PHYSICO-CHEMICAL PROPERTIES OF BANANA POWDER DURING STORAGE

Abstract

The study was conducted to prepare banana powder from ripe banana and also to determine physico-chemical properties of banana powder during storage. Fresh ripe banana was analyzed for its composition. The banana pulp contained 70.75g moisture, 0.97g protein, 0.43g fat, 0.85g ash, 27g total carbohydrate, 135.72 mg potassium, 13.37 mg calcium, 31.46 mg magnesium, 0.178 mg zinc, 0.491 mg iron and 25.34 mg phosphorus per 100g. The sliced (approx. 2 mm thick) banana were pretreated (The first control sample was without treatment; the 2°’, 3 and 4" sample were pretreated with 0.5% of citric acid, 0.1% of potassium metabisulfite (KMS) and mixed solution of 0.5% of citric acid with 0.1% of potassium metabisulfite (KMS) respectively for 10 minutes each), dried (at 60°C for 24 hours), grounded into powder, packed (in 0.0508 mm thick polyethylene bags), stored at room temperature (21°C- 32°C) and analyzed for physicochemical properties during 180 day’s storage at each & after 60 day’s interval and all were mean values of each sample obtained each interval at the end of total storage period. During storage 4 sample secured highest water holding capacity (3.678g/g) and oil holding capacity (0.985 g/g). Control sample secured the highest (8.915 %) & 4” sample secured the lowest (6.117 %) moisture content. For ash content control sample secured highest (3.57 %) & 4 sample the lowest (2.548 %) value. The protein content was highest in 4" (3.01 %) & lowest in control sample (2.095 %). 4 sample secured the highest (0.6625 %) & control the lowest (0.525 %) fat content. The total carbohydrate content of 4" sample was highest (87.67 %). The analysis of mineral composition was showed that 4 sample secured the highest potassium content (325.2 mg), calcium content (58.31 mg), magnesium content (148.4 mg), zinc content (2.653 mg), iron content (10.62 mg) & phosphorus content (78.22 mg) per 100g respectively. From the overall assessment 4" sample was the best quality of banana powder which was pretreated with the mixed solution of 0.5% of citric acid with 0.1% of potassium metabisulfite (KMS).