Prosiding Seminar Nasional Mekanisasi Pertanian

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    Study on Prevention of Aflatoxin Contamination in Groundnut by Accelerated Post-harvest Processes
    (2004-10-11) Raffi Paramawati, M. Hidayat, Rudy Tjahjohutomo
    Groundnut is one of important food crop commodities in Indonesia, which is susceptible to aflatoxin contamination. In tropical developing countries like Indonesia, Aspergillus flavus and Aspergillus parasiticus, both are cosmopolite fungals, growing in groundnut may produce aflatoxin B1, a suspected potential human carcinogen. Sampling of groundnut at some commercial level at 5 districts of 5 provinces showed different contamination levels at farm and market, viz. about 0-26.65 ppb and 6.60-49.98 ppb, respectively. In this study, an experiment by introducing machineries on post-harvest processing of groundnut was carried out to observe the aflatoxin contamination compared to the traditional technologies that farmers have been applying. Machineries used consist of groundnut thresher, flat bed dryer, groundnut sheller and vacuum packing sealer. The aflatoxin content at groundnut was analyzed by thin layer chromatography (TLC) method. Result showed that speeding up the post harvest processing activities resulted in absence of aflatoxin contamination within the groundnut. In contrast, traditional processing technologies resulted in the presence of aflatoxin in high contamination level. This experiment also noted that the hermetic storage of groundnut showed better result than the vacuum pack storage.
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    Evaluation and Improvement of Biodegradble Zein Based Film
    (2000-08-10) T. Yoshino; Raffi, Paramawati; H. Sakabe; I. Isobe; S.Sase; T. Maekawa
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    Effect of Various Drying Methods on Essential Components of Ginger (Zingiber officinale R) Sliced
    (2007-08-21) Raffi Paramawati, Sigit Triwahyudi, Reni Y. Gultom and Mardison
    Essential components of ginger such as oleoresin and essential oil are important substances that determine the quality of ginger. Those components could be decreased during process handling especially on the drying process. In this research, various drying methods ie. direct sun drying, indirect sun drying (material was cover by black color cloth), oven drying, stationary drying and rotary drying at 45-500 C were carried out to dry out fresh ginger sliced (of 2 ginger varieties) to be 9-12% moisture contents. Oleoresin content as well as essential oil of dried ginger were measured by standard manners. Results noted that the use dryer machines were better than those of traditional drying methods. Oleoresin of dried slice-ginger obtained from direct sun dry was in range of 19.20-20.90% (depend on the variety), indirect sun dry 19.00-21.39%, stationary drying 19.37-22.12%, and rotary drying 19.23-22.02%. Essential oil of ginger dried by direct and indirect sun dry, stationary drying and rotary drying are 2.39-, 2.80, 3.05 and 3.17% respectively.
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    Properties of Plasticized-Zei Film as Affected by Plasticier Treatments
    (2000-06-23) Raffi Paramawati; Tomoyuki Yoshino; See Chiro Isobe
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    Teknologi Tanaman Pangan Dan Persfektif Pengembangan Mekanisasi pertanian di Propinsi Banten
    (BBP Mektan, 2004-10-07) Benny Rachman; Kardiyono; Zuraida