Judul: Pengolahan sagu (Metraxylon sp) menjadi sagu mutiara instan sebagai upaya diversifikasi pangan
Abstrak: Sagu merupakan komoditi yang perlu diperhatikan dalam rangka diversifikasi pangan. Tujuan dari penelitian ini adalah memberikan alternatif pengolahan sagu berupa pembuatan sagu mutiara instan dan analisis sifat fisik, kimia dan organoleptiknya. Sagu mutiara merupakan hasil olahan pati sagu yang berbentuk butiran (bulat-bulat)kemudian disangrai agar bagian luarnya terlegitimasi (Anonim,1988). Sagu mutiara yang dibuat akan dikonversikan menjadi sagu mutiara instan.
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Judul: Modifikasi pengolahan dan nutrifikasi sagu mutiara
Abstrak: Penelitian ini bertujuan untuk mempelajari pembuatan sagu mutiara, dalam upaya untuk memperbaiki sifat fisik dan nilai gizinya, dengan memanfaatkan daging ikan cucut (Carcharhinus sp) sebagai suplemen protein. Penambahan daging ikan cucut ke dalam formula sagu mutiara dilakukan dalam bentuk tepung ikan cucut. Adapun parameter yang diamati adalah kadar air, kadar protein, derajat pencoklatan non enzimatik, daya cerna protein, daya cerna pati dan uji organoleptik. Dalam penlitian ini perbandingan antara tepung sagu dan tepung ikan yang digunakan ada 3 macam, yaitu 90: 10, 92: 8 dan 94: 6. Sedangkan pelapisan dengan putih telur dilakukan dalam jumlah yang sama yaitu sebanyak 20 persen dari campuran sagu dan tepung ikan. Peningkatan konsentrasi tepung sagu akan meningkatkan derajat pencoklatan non enzimatik dan menurunkan daya cerna protein sagu mutiara yang dihasilkan. Sedangkan kadar air dan daya cerna pati sagu mutiara tidak dipengaruhi oleh komposisi bahan baku yang digunakan. Peningkatan konsentrasi tepung ikan akan meningkatkan kandungan protein sagu mutiara. Penambahan tepung ikan cucut jenis Barongsai akan menghasilkan kandungan protein yang le- bih tinggi dibandingkan penambahan tepung ikan cucut jenis Liongbun. Hasil uji organoleptik terhadap aroma, warna, tekstur dan rasa sagu mutiara termodifikasi yang telah dimasak, men- nunjukkan bahwa komposisi bahan. baku dan jenis ikan cucut yang digunakan tidak mempengaruhi kesukaan panelis. Hasil pengamatan menunjukkan bahwa sagu mutiara yang terbaik adalah sagu mutiara yang disuplementasi dengan tepung ikan cucut jenis barongsai sebanyak 10 persen. Hal ini dika- renakan sagu mutiara tersebut mempunyai kadar protein yang tertinggi (10.96 %), daya cerna protein yang tinggi (93.07 %) dan derajat pencoklatan yang rendah (0.14)….
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Judul: Thermal Characteristics and Dynamics of Tropical Cyclone over Western North Pacific Ocean: A Case Study of Typhoon Songda (Chedeng) 2011
Abstrak: The frequent occasion of Tropical Cyclone (TC) over Western North Pacific (WNP) Ocean lies from 10˚N to 26˚N and 121˚E to 170˚E. Sources of TC development come from warm ocean temperature where latent heat is released during condensation processes and subsequently concentrated in the boundary layer. Relative humidity at 850-700 hPa is responsible to produce the most intense storm. Meanwhile, weak vertical wind shear between 850-200 hPa is one of the dynamical factors that lead to the development of TC. Pressure level of 850-200 hPa is chosen to minimize the thermodynamic effect in the lower troposphere. Typhoon Songda (Chedeng in the Philippines) or TSC lasted from May 18th to 30th, 2011 and strengthened into powerful Super Typhoon stage between May 24th and 27th. Long curving track and the exhibition of all sequences of TC life cycle, TSC is then considered as an ideal case of TC. The objective of the study with case of TSC is to investigate the role of thermal characteristics and dynamics on TC intensity. The research is carried out by using Advanced Research of Weather Research and Forecasting model (WRF ARW model) version 3.3. Two domains are employed in the model. The first domain situate from 02˚N to 40˚N and 118˚E to 149˚E and cover spatial resolution () of 33.1 km. The second domain situate from 09˚N to 27˚N and 119˚E to 132˚E with of 11 km. Timestep of the model () is 120 seconds. The model is supported by the following physical parameterization, i.e., Yonsei University Scheme (YSU) in the boundary layer, Kain-Fritsch scheme (KF) in the cumulus, and WRF Single-Moment 3-class scheme in the microphysics. Initial meteorological condition prior to the formation of the cyclone is generated using WRF ARW standard-release model. Sensitivity of the model output is obtained from a selected single-parameter change scenarios, namely, 10 % to 20 % decrease and increase of wind shear initial data at 850-200 hPa, and by 10 % to 20 % decrease of relative humidity initial data at 850-700 hPa. The result showed that the negative correlations between wind shear and intensity are found in wind shear scenarios. Wind shears of 10 ms-1 which lead to strengthening of the wind intensity in the early period of Typhoon development are found in wind shear scenarios. The effect of wind shear changes on wind intensity is statistically significant in the 20 % wind shear scenarios. During mature stage, weak wind intensity occurred when wind shear increase as given in the WRF standard-release and the 20 % decreasing scenario. Different situation is found in the 20 % increasing scenario where wind shear tend to weak and lead to strong wind intensity at this stage. Meanwhile, the reduction of moisture supply at 850-700 hPa resulting from 20 % decreasing relative humidity play a major role in the weakening of wind intensity and reduces mechanical energy of the cycle process as much as 300 J kg-1.
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