Judul: Perbaikan Proses Produksi Tepung Umbi Minor
Abstrak: Di Indonesia, kebutuhan utama pangan masyarakat dipenuhi oleb beras. Umbi-umbian menempati posisl kedua setelah beras, tetapi pemanfaatan umbi-umbian ini masih terbatas. Umbi-umbian yang sudah banyak digunakan hanyalah ubi jalar dan singkong, Hal ini menyebabkan terjadinya masalah rawannya ketahanan pangan di masyarakat Untuk itu diperlukan suatu sumber pangan baru yang dapat memenuhi kebutuhan masyarakat Indonesia sccara umum. Salah satunya dengan memanfaatkan umbi-umbi minor selain ubi jalar dan sillgkong, berupa talas, suweg, tiwul, ganyong, uwi, gembili, dll. Umbi-umbi ini yang biasanya hanya direbus, dipanggang padahal dapat diolah menjadi bentuk lain yang lebih bermanfaat seperti tepung. Sampai saat sekarang ini pemanfaatan tepung komposit sebagai substitusi terigu dalam produk roti juga masih sangat terbatas, karena rendahnya mutu remahan (crumb) roti tersebut Diharapkan tepung umbi-umbiall tersebut dapat menjadi salah satu alternatif tepung komposit dalam pembuatan produk pangan. Dalam usaha meningkatkan mutu tepung yang dihasilkan maka dilakukan perbaikan cara-cara pengolahan pada proses pembuatan tepung umbi yang dilakukan dengan penambahan bahan pemutih berupa natrium bisulfit dan kapur (kalsium karbonat).
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Judul: Produksi Tepung Umbi Kimpul (Xanthosoma sp.) dan Umbi Talas (Colocasia esculenta L.) Termodifikasi secara Fisik
Abstrak: Talas dan kimpul merupakan umbi minor penghasil karbohidrat yang belum dimanfaatkan secara optimal namun berpotensi sebagai substitusi terigu atau sebagai diversifikasi bahan pangan, bahan baku industri, dan lain sebagainya. Penggunaan tepung umbi kimpul dan talas secara alami memiliki kekurangan pada sifat fungsionalnya, antara lain tidak tahan panas, tidak tahan pengadukan serta tidak tahan asam. Sehingga perlu dilakukan modifikasi untuk meningkatkan sifat fungsionalnya. Tujuan penelitian ini adalah memproduksi tepung kimpul dan tepung talas termodifikasi secara fisik melalui proses Heat Moisture Treatment (HMT) dan annealing, serta mengetahui karakteristiknya. Hasil analisis komponen proksimat menunjukkan tepung talas mengandung protein yang lebih tinggi yang disebabkan oleh banyaknya lendir dibandingkan tepung kimpul. Berdasarkan sifat amilografinya, kedua metode modifikasi terhadap tepung umbi kimpul dan talas mampu meningkatkan suhu awal gelatinisasi, namun menurunkan peak viscosity, break down viscosity, set back viscosity, dan viskositas akhir tepung termodifikasi. Berdasarkan karakteristik fungsional terhadap kedua jenis umbi, metode HMT dapat meningkatkan daya cerna pati in vitro, namun menurunkan kelarutan, swelling power, dan kejernihan pasta 1%. Sementara itu, metode annealing dapat meningkatkan kelarutan, swelling power, dan daya cerna pati in vitro, namun menurunkan kejernihan pasta 1%.
Keyword: annealing, heat moisture treatment, kimpul, termodifikasi, talas

Judul: Development of DNA Vaccine Encoding Glycoprotein of Koi Herpes Virus Using Local Isolate.
Abstrak: The aim of this research was to develop DNA vaccine of Koi Herpesvirus in carp. Glycoprotein gene originated from ORF 25 KHV virus that is 1.8 kbp in size, is a potential gene in DNA vaccine construction. The sequencing and similarity analysis of the gene using BLAST software showed that this gene is a GP25 gene and was found to be very similar (99%) to GP25 of KHV virus from the USA and Israel. When this GP25 gene was ligated with pGEMT Easy (pT, 3 kbp in size) vector, plasmid size was increasing up to 5 kb. Following this, a digestion of pT-GP25 plasmid using Sal I enzyme was applied resulted in a GP25 fragment (1.8 kbp). Subsequently, pAct-D6 with a size of 8.5 kbp was also cut using the same enzyme to eleminate a D6 gene with a size of 1.6 kbp. GP25 gene was then ligated with pAct resulted a pAct-GP25 plasmid with a size of 8.8 kbp. As there was only one restriction site applied, ligation can be occurred in two different directions. Thus, in order to determine the plasmid with the desired direction PCR analysis was carried out, and plasmid with the right direction was the one that sized approximately 2.1 kbp (no. 6, 17 and 20). High level of GFP gene expression was detected in all tissues analyzed, i.e. kidney, gil, spleen, and muscle 24 hours after injection which indicated that β-actin promoter of Japanese medaka could be active in common carp. Although not as high as on 24 hours, expression was still detected until day 7 and disappeared after day 28 post injection indicating that pAct-GFP can be remained and β-actin promoter of Japanese medaka can be active in muscle, gills and kidney at least a week after injection. The result of RT-PCR analysis on pAct-GP25 injected common carp showed that GP25 gene expression can be detected 14 days after injection in all tissues observed. The expression level differences between GFP and GP25 genes possibly related to the primer sensitivity on annealing process to cDNA template and the size of PCR targeted DNA fragment, as smaller PCR targeted product will be easier to be amplified than a bigger one. The length of PCR targeted DNA with GP25 primer was 1.8 kbp whereas GFP gene was 0.6 kbp.The challenge test on common carp results showed that all unvaccinated and negative control (not infected with KHV) was alive until the end of the experiment. Whereas, the survival of fish vaccinated with a dose of 12.5 was ranged from 60.9 and 96.7%. In relation to the activity of β-actin promoter that was used in this DNA vaccine, gene expression was occured 24 hours after vaccination and remained until 2 weeks. The control fish that was not injected by GP25 showed no GP25 expression either in the observed tissues or organs and resulted in a lower survival, i.e. 23.3%. The challenge test results has indicated that the fish vaccinated with GP25 at doses of 7.5 and 12.5 μg/100μL were able to produce KHV glycoprotein in their body which would be
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