Judul: Pengaruh edible film kitosan terhadap umur simpan mutu buah nenas (Ananas comosus L. Merr) segar terolah minimal selama penyimpanan atmosfer termodifikasi.
Abstrak: Minimally processed pineapple fruit has a limited shelf life which can be extended if the fruits are subjected to edible coating and modified atmosphere packaging combined with low temperature storage. The objective of this study was to determine the influence of chitosan as the major ingredient for the edible coating used for minimally processed pineapple fruit on its quality and shelf life. Preliminary experiment resulted in the selection of 1.5% chitosan for the edible coating selection due to the lowest respiration made of the edible coating coated minimally processed pineapple stored at 5ºC. This research combined 2 treatments which were storage temperature ( three levels 5ºC, 10ºC, and room temperature, 25ºC), and atmosphere composition (at also three levels 0%, 1%, and 1.5%) then were applied to the edible coated minimally processed pineapple fruit. The results indicated that storage temperature of 5ºC, and atmosphere contain of 3-5% CO2& 4-6% O2 were favored compared to the often condition which can make shelf life of pineapple until 10 days.
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Judul: Shelf life and quality of edible coated fresh cut sapota (Achras zapota, L) cultivar sukatali ST1 stored in modified atmosphere packaging
Abstrak: Minimally processed fruit is one of the options that provide practical and ready to eat food for the urban people that has instant life style. Edible coating and low temperature are required to keep the quality and the shelf life of the minimally processed fruits. The objective of this study was to determine the influence of edible coating used for fresh cut sapota cultivar Sukatali ST1 on its quality and shelf life. Preliminary experiment resulted in the selection of 0.5% glucomannan out of 0.5%, 0.55%, and 0.6% concentration for the edible coated fresh cut sapota due to its lowest respiration. Two treatments, storage temperature at three levels 5oC, 10oC, 15oC and atmosphere composition at also three levels 16-18% O2 & 2-4% CO2, 14-16% O2 & 2-4% CO2, and 14-16% O2 & 4-6% CO2 were applied to the edible coated fresh cut sapota cultivar Sukatali ST1. The results indicated that storage temperature of 10 oC, and atmosphere composition of 14-16% O2 and 2-4% CO2 were favored compared to the room condition. The packaging films appropriate for the selected condition were stretch film and polypropylene film. The validation experiment concluded that edible coated fresh cut sapota cultivar Sukatali ST1 was best to be stored at 10 oC in a modified atmosphere packaging using stretch film, which was still accepted by consumers on the sixth day storage with an organoleptic score of 3-5 in the range of
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Judul: Query Expansion based on Bilingual Dictionary Using Conditional Probability
Abstrak: Query expansion is a technique that can be used to bridge vocabulary gaps between queries and documents in the collection. With query expansion, user will be helped to formulate queries well so that user will optimize the search result. In this study, the expansion term was resulted from the translation of bilingual dictionary. Subsequently, several terms of expansion were elected based on the closeness of its relationship with the original query. This research showed that conditional probability can be used to select expansion term in bilingual translation method query expansion. The result of 1000 documents was more than 97% relevan document can be retrieved by this system. The more expansion term used, the larger number relevan document was retrieved.
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