Judul: Karakteristik Pengeringan Dan Evaluasi Mutu Pada Potongan Mangga (Mangifera Indica, L.) Varietas Arumanis Dengan Praperlakuan Dehidrasi Osmotik.
Abstrak: Drying with osmotic dehydration pretreatment of mango slices is one of efforts to extend the shelf life of mangoes. Drying characteristics of chitosan coated arumanis mango slices pretreated by osmotic dehydration was investigated in this research. The osmotic solution used was 42 and 66 oBrix. Drying rate, decrease of moisture content, moisture content equilibrium, drying constant, and shrinkage coefficient has been used as a drying characteristic parameters. In addition, the quality evaluation of the dried mango was performed. The quality was determined by image processing and sensory evaluation methods. The drying experiments were carried out at temperature of 40, 50, and 60 oC at fixed absolute humidity. Drying temperature and osmotic dehydration affected the parameters of drying characteristics. The highest drying rate and decreasing moisture content was obtained at 60 °C drying temperature. From all levels of drying temperature, drying rate and decreasing moisture content fresh mango slices higher than other tratments. Fresh mango slices also has the highest equilibrium moisture content. From all drying treatments, osmosed noncoated mango slices has a better quality than others treatments.
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Judul: Pengeringan Osmotik pada Irisan Buah Mangga Arumanis (Mangifera indica L.) dengan Pelapisan Kitosan
Abstrak: Osmotic dehydration with sugar solution as the osmo-active substance was commonly applied to fruits, for example the mango. The objective of this research was to investigate the effect of Chitosan-coating, temperature and concentration of solution on Water Loss (WL) and Solid Gain (SG) during osmotic dehydration of mango. The treatment of solution temperatures of 30 oC and 50 oC and solution concentrations of 42 oBrix, 54 oBrix and 66 oBrix were applied to this research. The variable of the mass of the sample, moisture content, solid content, and the volume of the sample were measured during this research. Measurement was done at minute 0, 30, 60, 90, 120, 180, 240, and 300. The sample non-coating, high temperature and high concentration of the solution increases WL, while the use of chitosan, low temperature and high concentration of the solution decreases SG. The largest values of PR was 12.2 at E1T1C3 treatment (using the chitosan, solution temperature 30 oC, and concentration of the solution 66 oBrix) with the WL values was 49.65 % and the SG values was 4.05 %. Azuara’s model was suitable for modeling the WL and SG on the osmotic dehydration of mango slices.
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Judul: Peranan Pemiimpin Formal dalam Menggerakkan Partisipasi Masyarakat terhadap Pusat Kegiatan Belajar Masyarakat (PKBM)
Abstrak: Hasil penelitian yang dilakukan oleh Dewan lnternasional Pengembangan Pendidikan (me International Central of Educational Development) da n UNESCO mengungkapkan bahwa negam-negara berkembang umumnya mernpunyai masalah yang terkait dengan peningkatan dan pendapatan yang menjadi dasar penting bagi pendidikan masyarakat. Dengan dernikian perlu diadakannya program pernbangunan pendidikan baik melalui pendidikan fomal maupun pendidikan nonformal. Dalam hal ini lebih ditekankan kepada pendidikan non formal, sehingga memunculkan ide Community Learning centre (CLC).
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