Judul: Pemanfaatan gracilaria sp. dalam pembuatan permen jelly
Abstrak: Rumput laut merupakan salah satu hasil perikanan yang mempunyai nilai ekonomis tinggi dan menjadi sumber devisa nonmigas. Salah satu produk diversifikasinya yaitu produk permen jelly rumput laut dari jenis Gracilaria sp. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh rumput laut Gracilaria sp. terhadap karakteristik mutu fisik dan kimia serta mengetahui pertumbuhan mikroba pada permen jelly Gracilaria sp. selama penyimpanan. Penelitian ini dibagi menjadi 2 tahap. Tahap I yaitu menentukan formulasi pembuatan permen jelly rumput laut dan penentuan produk terbaik. Formulasi bahan penyusun permen jelly rumput laut adalah gula pasir, HFS, sorbitol, asam sitrat, gelatin, pewarna dan essence dalam jumlah yang tetap dan rumput laut sebagai perlakuan dengan penambahan sebanyak 35 g, 40 g, 45 g dan 50 g. Penentuan produk terbaik dilakukan dengan analisis sensori yang meliputi parameter tekstur, rasa, penampakan, aroma dan warna; analisis fisik (kekerasan dan elastisitas) dan analisis kimia (pH dan aw). Untuk pembanding digunakan produk permen komersial yang diperoleh dari pasaran. Penentuan produk terbaik diperkuat dengan pengolahan data menggunakan metode PHA (Proses Hierarki Analisis) dengan bantuan software Expert Choice 2000. Pada tahap II, produk terbaik diuji kadar air, kadar abu dan kadar gula total. Setelah diuji kimia, produk terbaik disimpan pada suhu 27°C dan RH 85% selama 21 hari. Selama penyimpanan produk diuji mikrobiologi dengan PDA (Potato Dextra Agar) setiap 3 hari sekali dan dianalisis sensori. ..dst
Keyword: 

Judul: Pemanfaatan rumput laut Gelidium sp. dalam pembuatan permen jelly
Abstrak: Rumput laut merupakan salah satu hasil perairan yang tersebar luas di Indonesia dengan jenisnya yang sangat beragam. Salah satu jenis rumput laut yang diekstraksi adalah Gelidium sp. dengan kandungan kualitas agar-agar yangbaik, memiliki kekuatan gel yang tinggi dan kandungan sulfat yang rendah. Diversifikasi produk rumput laut terus dikembangkan untuk meningkatkan daya gunanya. Salah satu usaha diversifikasi tersebut adalah pemanfaatan rumput laut Gelidium sp. dalam pembuatan permen jelly.
Keyword: 

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.
Keyword: