Judul: Formulasi serbuk tahu sutera instan menggunakan metode respon permukaan (response surface methodology)
Abstrak: Tofu is one of the popular food product in Asia. Tofu is a gel of soy protein that has a delicious taste, soft texture, cheap in price, easily digestible and has high protein content. Tofu is a product that has a short shelf life due to its high water content, especially in the raw form so there are frequently encountered cases of formalin using to extend the shelf life of tofu. Production of tofu by using silken tofu powder (premix) is expected to be the solution of this problem. The aim of this study is to find the best formula of silken tofu powder and optimize the process (coagulation time and temperature) using response surface methodology. Result of the first stage in this study showed the selected main raw material was soy milk powder, the ratio of silken tofu powder and water was 1:2, the range of GDL was 1- 1,5%, the range of STPP was 0,05% - 0,15%, the range of Na2HPO4 and NaH2PO4 was 0,125% - 0,175%, the range of coagulation time was 30-50 minutes and the range of coagulation temperature was 70-90oC. The response surface methodology performed in the second stage of this study. It shows that the selected formula for silken tofu powder is GDL 1 %, STPP 0,06%, and Na2HPO4 and NaH2PO4 0,125% and for coagulation time and temperature are 49 minutes and 89oC. Measured texture response of silken tofu made from the chosen formula and the optimum coagulation time and temperature is 149.3 gf.
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Judul: Proses Pengolahan Tahu Sutera Instan (Silken Tofu)
Abstrak: Silken Tofu is product one of processed soybean. Althought named tofu, but different with tofu usual, because silken tofu have texture that gantle and soft. Siken tofu is product of gel protein soybean that has nice taste, soft texture, relatively inexpensive of price, easy to disgeted and has contents hight protein. Common problems which containt the tofu is shelf life of tofu short time. This problems because of hight wate content that specifically for shape into crude until usually has found case of used formalin to shelf life of tofu that done by producers. Production tofu in dry method with using powder silken tofu instant expected solution from this problems. Making tofu dry method using soy protein that has been dried by spray drying, so adjust to make tofu with they needs. Siken fofu instant based yield of analysis, water content, protein content and colour rendition obtained soybeans and water ratio with is anable to produce the best soy flour protein is 1 : 5. Results of the analysis water content and protein content with the best coagulant use apple vinergar 12% and calcium chloride (CaCl2) 2%. Value water content and protein content of silken tofu instant coagulant with aple vinegar 12% of has value 76.63%, and 45.58%, while coagulant with calcium chloride has value 74.89%, dan 38.23%.
Keyword: processing silken tofu instant., silken tofu

Judul: Psittacosis Sebagai Zoonosis Penting Yang Berasal Dari Burung
Abstrak: Psittacosis atau ornithosis adalah penyakit menular dari burung kepada manusia. Agens penyebab psittacosis termasuk ke dalam virus psittacosis-lymphogranuloma venereum group yang disebut Chlamydia psittaci. C. psittaci hanya dapat berkembang biak di dalam jaringan hidup tetapi peka terhadap antibiotik. Penyebaran penyakit ini sangat luas, terdapat hampir di seluruh dunia. Di Indonesia penyakit ini belum pernah di diagnosa, tetapi mengingat terdapat demikian banyaknya jenis burung maka diperkirakan psittacosis ini sudah ada. Kasus pada manusia pertamakali ditemukan oleh Ritter pada tahun 1879, di Eropa. Waktu itu dikenal sebagai pneumotyphus. Chlamydia psittaci tidak hanya sebagai penyebab infeksi pada burung, juga bisa menyebabkan infeksi pada mamalia diantaranya sapi, kerbau, kambing, domba, babi dan kucing. Pada kucing dikenal sebagai feline pneumonitis. Pada domba atau kambing mengakibatkan enzootic abortion. Pada burung, kalkun merupakan unggas paling rentan diikuti oleh burung psittacine dan burung lain di luar famili psittacidae. Virulensinyapun berbeda-beda. Yang berasal dari kalkun bervirulensi tinggi, sedangkan yang berasal dari burung merpati bisa bervirulensi tinggi bisa juga bervirulensi rendah. Penularan terjadi melalui kontak langsung maupun ti- dak langsung. Penularan melalui telur tidak terjadi. Umumnya penyakit ini memperlihatkan gejala klinis berupa deman, lesu, lemah, anorexia, kurus, diarrhea ber- warna kekuningan, discharge dari mata dan hidung, conjunc- tivitis. Gejala khas pada kalkun adalah istirahat dengan sternum sebagai dasarnya, karena adanya tekanan dari bagian perut yang sakit. Sedangkan pada manusia memperlihatkan adanya demam, kadang-kadang merasa dingin, lesu, sakit kepala yang hebat, sakit pada bagian belakang badan dan photophobia…dst
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