| dc.description.abstract | Tapos pineapple is a specific kind of pineapple from Bogor, West Java. Tapos pineapple is called Gati pineapple in its former area. The uniqueness of this pineapple from Tapos is that this pineapple is planted naturally, without any addition of chemical fertilizer and pesticides, and that is why it is also called ‘organic’ pineapple. During harvest time, Gati pineapple had an excessive availability and it is sold in the ‘fresh fruit’ form so that its price is so low or its price is the same as nonorganic pineapple. This condition will disadvantage the farmers. One of the alternatives to raise pineapple’s price is converting pineapple into product that has an added value, such as pineapple jam. Organic pineapple jam could be made without chemical addition, but it was used natural materials, such as sugar, orange extract, jelly, clove, cinnamon and salt. The aim of this research is to get the processing technology of organic pineapple jam, characteristic product pineapple jam and shelf-life estimation in glass jar and polypropylene plastic packaging. Organic pineapple jam in glass jar and polypropylene packaging then was kept at 250C, 350C and 450C. Shelf-life estimation in polypropylene plastic and glass jar was using Arrhenius acceleration method. Parameters that were checked during storage were water content, total acid, pH and colour. The processing of pineapple jam consisted of materials preparation, cooking, packaging sterilization, packaging, pasteurization and cooling. Then each of packedpineapple jam was kept in incubator. During storage there was quality changing from pineapple jam. It was seen from water content analysis. Pineapple jam in polypropylene plastic packaging had increased-water content right after storage (based on first week analysis), then its water content was decreased or remained stable at 26 - 32%. Pineapple jam in glass jar packaging also had increased-water content right after storage (based on first week analysis), then its water content was decreased or remained stable at 26 - 35%. Total acid of pineapple jam in glass jar packaging was increased during the first week of storage, while total acid of pineapple jam in polypropylene plastic packaging was decreased during the first week of storage and then both of them remained constant at 0.9 - 1.1 g/100 g. Usage of polypropylene plastic and glass jar as pineapple jam’s packaging materials did not affect changing of pH value during the first week of storage. Both of these materials were slightly decreased or remained stable at 3.38 - 3.67. Color or brightness value of organic pineapple jam were relatively decreasing in all of packaging materials and all of storage temperature’s range during storing period. The highest temperature during storage, then the decreasing rate of brightness value of pineapple jam would be higher. Jam is a fruit based product that has semi paste or semi wet form. Critical parameter for semi wet food product is water content. It explained that amongst the critical parameters that have been used (water content, total acid, pH and color), water content showed a significant difference during storage with critical point of 35%. Shelf life of organic pineapple jam in glass jar packaging was longer than in polypropylene plastic packaging. Shelf life in polypropylene plastic at 250C, 350C and 450C were 104, 95 and 87 days. Shelf life in glass jar packaging at 250C, 350C and 450C were 117, 101 and 88 days. | en |
