Preservation of Passion Fruit Juice

Production and preservation of Passion Fruit Juice was examined to reduce the spoilage and to increase the shelf life of the juice using chemical preservatives. The preservation of the juice was carried out using sugar, benzoic acid, citric and a combination of citric and benzoic acid under room temperature. The result revealed that the juice maintained its color, aroma and tastes for at least one month when 30 % benzoic acid was used as preservative. This happens to be the best among all. The juice under other preservation like 4% sugar went bad after three days, while that of 4 % citric acid maintained its qualities for one week and some days, but thereafter the aroma started to fade. The combination of 3 % benzoic acid and 4 % citric acid maintained the qualities of the juice fairly between two to three weeks. The alcoholic content was also estimated and it was discovered that the juice containing citric acid and sugar has the highest percentage of alcohol. The preservation used also altered the pH so that it is impossible for pathogens to exist at such a low pH environment