Judul: Formulasi Produk Minuman Instant Lingzhi-Jahe Effervescent
Abstrak: Penelitian ini bertujuan untuk memperoleh produk minuman effervescent yang diterima secara organoleptik (rasa, aroma, warna), serta kemampuannya untuk memberikan dampak positif bagi kesehatan (fungsional). Jamur Lingzhi kaya akan senyawa bioaktif diantaranya Germanium-organik. Kemampuannya dalam pembersihan darah, peningkatan sistem kekebalan tubuh (improvement of immune system) dan pengurangan ketegangan syaraf merupakan keunggulannya. Sediaan effervescent-nya konsumen. Pembuatan Serbuk konsentrat lingzhi (SKL) dan serbuk konsentrat jahe (SKJ) serta analisis proksimat dilakukan sebelum formulasi.
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Judul: Formulasi, Karakterisasi Kimia Dan Uji Aktivitas Antioksidan Produk Minuman Fungsional Tradisional Sari Jahe (Zingiber Officinale Rose.) dan Sari Sereh Dapur (Cymbopogon flexuosus)
Abstrak: Selain food supplement, akhir-akhir ini makin akrab di telinga kita makanan dan minuman fungsional (fungsional foods). Makanan fungsional semakin populer seiring dengan semakin tingginya kepedulian masyarakat untuk menjaga kesehatan. Salah satu penyebab gangguan kesehatan yang ada adalah proses oksidasi di dalam tubuh. Kerusakan ini dapat dicegah dengan mengkonsumsi antioksidan. Sumber antioksidan alami yang telah banyak diteliti adalah rempah-rempah, dan penggunaan senyawa alami mempunyai kelebihan karena lebih aman untuk dikonsumsi. Dengan jumlah produksi dan jenis rempah-rempah yang besar, Indonesia berpotensi untuk menjadi negara produsen minuman fungsional antioksidan alami. Adapun tujuan penelitian ini adalah untuk menentukan SOP (Standard Operation Procedure); memformulasikan produk minuman fungsional tradisional; pemilihan 3 formula yang terbaik melalui uji organoleptik yang meliputi uji hedonik dan uji ranking; menguji karakterisitk kimia yang meliputi pH, total asam tertitrasi (TAT), total padatan terlarut, total fenol; serta menguji aktivitas antioksidan dari produk minuman fungsional tradisional sari jahe dan sari sereh dapur secara in vitro dengan menggunakan metode dien terkonjugasi (dengan modifikasi).
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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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