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JURNAL SAINS DAN TEKNOLOGI INDONESIA

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SOFT CANDY DARI BAHAN AKTIF OLEORESIN TEMULAWAK (Curcuma xanthorhiza Roxb.) lukas, amos; purwanto, wahyu; ridwam, ahmad yudi
Jurnal Sains dan Teknologi Indonesia Vol. 13 No. 3 (2011)
Publisher : Badan Pengkajian dan Penerapan Teknologi

been carried out. The purpose of the study was to find the best formulae of the soft candy. The properties of the soft candy especially the moisture content, ash content and toxicity were exxmined. The results show that the formulae with sorbitol and curcuma of 39.5 g and 1 g respectively (A3B3) has the highest moisture content that is 14.52%, while the lowest is 11.89% which was obtained in the formulae containing curcuma of 0.5 g and sorbitol of 37.5 g (A1B1). The highest ash content was obtained in the formulae containing sorbitol of 38.5 g and curcuma of 0.5 g (A2B1). The value is 1.1739%.The lowest ash content was found in the formulae containing 38.5 g of sorbitol and 1 g of curcuma (A2B3), the value is 1.505%. The toxicity test results show that the soft candy has no bio-active properties. The LC50 of the candy is more than 1000 ppm. Based on hedonic/organoleptic test, the soft candy with sorbitol and curcuma of 75% and 0.25% respectively is the most prefered.

ARAHAN PENGATURAN DAN PENGENDALIAN BANGUNAN DI KECAMATAN PINANG KOTA TANGERANG Hendrojogi, Windriarti
Jurnal Sains dan Teknologi Indonesia Vol. 10 No. 1 (2008)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Kecamatan Pinang is located in Kota Tangerang. The region has an important role in the regional development, specially for Kota Tangerang and DKI Jakarta. Nowadays the physical development some part of Kecamatan Pinang is very poor and crowded. There are no building development guidelines that guiding the physical development of settlement, commercial actifitives and other infrastructure. These conditions certainly caused many visual as well as economical and social problems. Commercial activities is obstructed, and the environment become unsave and uncomfortable. Concernng those it is necessary to formulate thebuilding development guidelines which is comprised of Building Demarcation Line (GSB), Buliding Coverage Ratio (KDB), Floor Coverage Ratio (KLB), and Building Elevated (TB). It is hope that the building code would create safety, pleasant, productive, and sustainable spatial in Kecamatan Pinang.

PENGARUH ZEOLIT DALAM PUPUK TERHADAP PERTUMBUHAN DAN PRODUKSI PADI SAWAH DI KABUPATEN BADUNG PROVINSI BALI jufri, akhmad; Rosjidi, Mochamad
Jurnal Sains dan Teknologi Indonesia Vol. 14 No. 3 (2012)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Many efforts are conducted to increase the fertilising efficiency, especially nitrogen in rice cultivation practices. This field experiment was conducted to evaluate the effect of zeolite on growth and production of lowland rice during rainy season in Badung, Bali. The experiment showed that fertilizer mixed with zeolite resulted in the same growth and productivity, although the fertilising doses was reduced. This means that zeolite incread fertilising efficiency in rice cultivation.

SURVEI POTENSI PASIR KUARSA DI DAERAH KETAPANG PROPINSI KALIMANTAN BARAT Prayogo, Teguh; Budiman, Bayu
Jurnal Sains dan Teknologi Indonesia Vol. 11 No. 2 (2009)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Ketapang area is one of lower part or southern sub-province of West Kalimanatan Province, which is located geographically between 108o40’ and 111o20’ in Longitude and between 0o20’ and 3o04’ in Latitude. This area has various of industrial mineral resources, for example quartz sand. Quartz sand or also calledwith white sand is the reasult of rock weathering that contents main mineral, such as quartz, and felsdpar. Then, the result of weathering is cleaned and transported by water or wind and deposited in the stream side, lake or sea. In this paper will bedescribed concerning to locations, characteristics, and usages of quratz sand in Ketapang area, West Kalimantan Province. Based on chemical or laboratory analysis and interpretation, the quartz sands can be used as glass industry, cement industry material, and moulding industry.

Ekstraksi Beta-Glukan DARI Jamur Tiram (Pleurotus ostreatus) Uuntuk Minuman Kesehatan Tjokrokusumo, Donowati; Widyastuti, Netty; Giarni, Reni
Jurnal Sains dan Teknologi Indonesia Vol. 16 No. 1 (2014)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Oyster mushroom beta glucan has potential as a healthy drink. The purpose of this research is to increase the amount of beta glucan derived from the extraction of oyster mushroom (Pleurotus ostreatus). Beta glucan extraction was done by boiling oyster mushrooms for an hour (60 minutes). To increase the yield of beta glucan production, the extraction has been repeated three times and the results of the extraction of so- called filtrate I, II and filtrate filtrate III. Beta-glucan was produced, and were analized using Megazyme and as a standard method used Yeast and beta glucan levels in packaging contained 58.5% (w / w). The results showed that the first filtrate with the highest viscosity to produce the highest levels of beta-glucan which is 0.7559% (w / w), filtrate II produced beta glucan levels of 0.0904% (w / w), while filtrate III produced the lowest levels of beta-glucan 0.0161% (w / w). From the data obtained in this study suggested that the second and third extraction are not necessary, because the results were very small.Beta glukan jamur tiram mempunyai potensi sebagai bahan minuman kesehatan. Tujuan penelitian ini dalam rangka ingin meningkatkan jumlah beta glukan yang diperoleh dari hasil ekstraksi beta glukan dari jamur tiram (Pleurotus ostreatus). Ekstraksi beta glukan dilakukan dengan cara perebusan tudung jamur tiram selama satu jam (60 menit). Untuk meningkatkan hasil beta glukan yang dihasilkan, telah dilakukan ekstraksi secara berulang sebanyak tiga kali dan hasil ekstraksi tersebut disebut Filtrat I, Filtrat II dan Filtrat III. Beta-glukan yang dihasilkan, dianaliasa dengan menggunakan metode Megazyme dan sebagai standar digunakan Yeast dengan kadar beta glukan dalam kemasan 58,5 % (b/b). Hasil percobaan menunjukkan bahwa Filtrat I dengan kekentalan tertinggi menghasilkan kadar beta-glukan tertinggi yakni 0,7559 % (b/b), Filtrat II dengan kadar beta glukan 0,0904 % (b/b), sedangkan Filtrat III menghasilkan kadar beta-glukan 0,0161 % (b/b). Dari data yang diperoleh disarankan bahwa ekstraksi kedua dan ketiga tidak perlu dilakukan, karena hasilnya relatif sangat kecil.Keywords: Oyster mushroom (Pleurotus ostreatus), filtrate, levels of beta-glucan

Konsumsi Energi Pada Alat Pengering Surya dan Tipe Bak Untuk Pengeringan Biji Kakao Manalu, Lamhot P.
Jurnal Sains dan Teknologi Indonesia Vol. 17 No. 3 (2015)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Crop drying is essential for preservation in agricultural applications. It is performed either using fossil fuels in an artificial mechanical drying process or by placing the crop under the open sun. The first method is costly and has a negative impact on the environment, while the second method is totally dependent on the weather. The drying process requires a lot of energy in relation to the amount of water that must be evaporated from the product. It is estimated that 12% of the total energy used by the food industries and agriculture absorbed in this process. Due to the limitation of energy resources, it is important to keep researching and developing of diversification and optimization of energy This study aims to assess the use of energy for cocoa drying using solar energy dryer and bin-type dryer, as well as to determine the drying efficiency of each type of dryer. The results showed that the efficiency of the solar dryer drying system ranges between 36% to 46%, while the tub-type dryers between 21.7% to 33.1%. The specific energy of solar dryer ranged from 6.17-7.87 MJ / kg, while the tub-type dryers 8.58-13.63 MJ / kg. Dryer efficiency is influenced by the level of solar irradiation and the amount of drying load, the higher the irradiation received and more cocoa beans are dried, the drying efficiency is also higher and the specific energy further down.Proses pengeringan memerlukan banyak energi sehubungan dengan banyaknya air yang harus diuapkan dari bahan yang dikeringkan. Pengeringan dapat dilakukan dengan menggunakan pengering mekanis berbahan bakar fosil atau dengan menempatkan produk di bawah matahari terbuka. Metode pertama adalah mahal dan memiliki dampak negatif pada lingkungan, sedangkan metode kedua sangat tergantung pada cuaca. Diperkirakan bahwa 12% dari total energi yang dipergunakan oleh industri pangan dan pertanian diserap untuk proses ini. Mengingat semakin terbatasnya sumber energi bahan bakar minyak maka usaha diversifikasi dan optimasi energi untuk pengeringan perlu terus diteliti dan dikembangkan. Salah satunya adalah pemanfaatan energi surya sebagai sumber energi terbarukan. Penelitian ini bertujuan untuk mengkaji penggunaan energi untuk pengeringan kakao dengan memakai pengering energi surya dan pengering tipe bak, serta untuk mengetahui efisiensi pengeringan dari masing-masing tipe pengering. Hasil kajian menunjukkan bahwa efisiensi total sistem pengeringan alat pengering surya berkisar antara 36% dan 46%, sedangkan pengering tipe bak antara 21.7% dan 33.1%. Kebutuhan energi spesifik alat pengering surya berkisar antara 6.17-7.87 MJ/kg, sedangkan alat pengering tipe bak 8.58-13.63 MJ/kg. Efisiensi alat pengering dipengaruhi oleh tingkat iradiasi surya dan jumlah beban pengeringan, semakin tinggi iradiasi yang diterima pengering serta semakin banyak biji kakao yang dikeringkan, maka efisiensi pengeringan juga semakin tinggi dan kebutuhan energi spesifik semakin turun.Keywords:Ã‚Â energy, efficiency, cocoa, solar dryer, bin-type dryer.

A LTERNATIF KAPAL PENGANGKUT LPG MELALUI SUNGAI DENGAN MEMANFAATKAN TEKNOLOGI ISO-TANK Muis, Abdul
Jurnal Sains dan Teknologi Indonesia Vol. 8 No. 2 (2006)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Condition of Indonesian rivers, geographically, is sharp, narrow, and shallow shape with many curves and also high water current with big differences in water tidal. Moreover, there are hard sedimentation in estuary caused big affect to vessel entering harbour. With great potential on LPG carrier passing through river, required limited draft, length and capacity of vessel. An Advanced container technology, also design to carry liquid (ISO-TANK), may distribute LPG through the river only by conventional container carrier. Self Propulsion Barge is an alternative of ISO-TANK carrier with small draft and big capacity.

ANALISIS POTENSI DAN KARAKTERISTIK GAMBUT SEBAGAI BAHAN PERTIMBANGAN UNTUK ARAHAN PERENCANAAN PENGEMBANGAN KAWASAN DI KABUPATEN SIAK Soewandita, Hasmana; sudiana, nana
Jurnal Sains dan Teknologi Indonesia Vol. 13 No. 2 (2011)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Peat land resources have the potential to be managed sustainably. Peatlands as a fragile ecosystem utilization should consider its characteristics, such as depth, maturity, fertility, land cover conditions, and calorie content. Peatland resources located in Siak Regency is a land system called Mendawai (MDW) and Gambut (GBT), whereas according to the USDA classification (2003) is land unit called Tropofibrist, Tropohemist and Troposaprist. For further management, peatland area in Siak District grouped into 7 regions peat dome : Buatan, Bukit Batu, Kandis, Merempan, Siak Kecil, Sungai Mandau and Zamrud. Based on the level of soil fertility, maturity and depth of peat, the peat areas suitable for agricultural development is the Siak Kecil, Sungai Mandau and Zamrud. Considering the condition of land cover and ecosystem components, Zamrud peat dome should be allocated to the conservation area. While based on calorie content and level of maturity, Mandau and Buatan peat dome are suitable for industrial development of peat-based materials

ODEL KELEMBAGAAN PEMBANGUNAN KAWASAN ANDALAN TOLITOLI warseno, warseno
Jurnal Sains dan Teknologi Indonesia Vol. 9 No. 3 (2007)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Institution is an important aspect for creating strategy of the pledge area development. Regarding the implementation of the strategy, some aspects have to be highlighted such as (1) the strategy has to be a guideline for the organization daily routine; (2) the strategy and the organization have to be united, means the strategy has to be reflected the way of running the organization, or implementing the visions and missions as well; (3) therefore, by using the strategy it is compulsory for the decision makers to direct and to control both the process and the result of the activities, and to be flexible in any circumstances. In order to be implemented effectively, institutionalization of the strategy development in astrategic planning is a must that means the strategy has to be built in the organization daily routine. Four main instruments which can be used for institutionalized the strategy respectively are: the organization structure, the leadership, the suitability of the organization strategy and culture, and the organization’s reward system.

PRAKIRAAN KEBUTUHAN ENERGI UNTUK KENDARAAN BERMOTOR DI PERKOTAAN: ASPEK PEMODELAN Sugiyono, Agus
Jurnal Sains dan Teknologi Indonesia Vol. 14 No. 2 (2012)
Publisher : Badan Pengkajian dan Penerapan Teknologi

The transportation sector is an important sector to support the national development. As most of the energy demand in the transportation sector is used for motor vehicles in the road transportation, estimating the energy demand for motor vehicles is an important task in energy management. One of the method to predict the energy demand for motor vehicles is based ontwo main parameters, i.e. the intensity and activities of energy utilization. While the activity reflected growth in the number of motor vehicles and the mileage per unit vehicle for a certain time. By knowing the energy demand forecasts for the motor vehicle, the opportunities to increase energy efficiency can be analyzed by switching transportation mode.

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