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Dwi Setyaningsih
Departemen Teknologi Industri Pertanian, Fakultas Teknologi Pertanian, Institut Pertanian Bogor, Kampus IPB Darmaga, PO Box 220 Jawa Barat 16680
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Penentuan Lama Sulfonasi pada Proses Produksi Surfaktan Mes untuk Aplikasi EOR Mira Rival; Tun Tedja Irawadi; Ani Suryani; Dwi Setyaningsih; Erliza Hambali
Jurnal Ilmu Pertanian Indonesia Vol. 16 No. 1 (2011): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

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Abstract

For producing oil remains that remained at old oil wells (mature field), a method of advanced oil acquirement improvement known as an Enhanced Oil Recovery (EOR) should be applied. Surfactant plays an important role in EOR process by reducing interfacial tension (1FT), altering wettability, reducing oil viscosity, and stabilizing dispersion to facilitate the process of oil jetting from reservoir to production well. To optimally cleanse oil that still remained a surfactant compatible with formation water and reservoir is needed. This study was conducted to get the best time of sulfonation process for producing MES surfactant with lower interfacialtension for EOR application. Results showed that the best times of sulfonation process with lower interfacial tension value were 3 and 4 hours.
Characterization of B-glukosidase Enzyme from Vanilla Bean Dwi Setyaningsih; Maggy T Soehartono; Anton Apriyantono; Ika Mariska
Jurnal Teknologi dan Industri Pangan Vol. 18 No. 2 (2007): Jurnal Teknologi dan Industri Pangan
Publisher : Departemen Ilmu dan Teknologi Pangan, IPB Indonesia bekerjasama dengan PATPI

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Abstract

The Indonesian natural vanilla is know for having a unigue woody, smooky, and phenolic flavor. Development of the aroma and flavor vanilla was formed by the action of a hydrolytic enzyme B-glucosidase on glucovanillin. The objective of this research was to characterize vanilla B-glucosidase. The vanilla B-glucosidase activity was increased by detergent. The enzyme was found as heat labile. Scalding should be conducted at 400C for 2-3 minutes. The result from B-glucosidase activity in each part of vanilla and microscopic analisis of vanilla bean slice showed that the highest B-glucosidase activity and vanillin concentrations were found in the seed funicles and placental tissue the of vanilla bean. The activity of vanilla B-glucosidase was optimum at pH 6,0, and temperature of 400C, found as and activation energy was 5,78 kcal/mole. After 44 minutes incubation time at 400C. The activity was reduced down to 10%. The apparent of moleculer weight was 100-400 kDa according to gel setration (Sephacryl S-300) analysis. Key words : Vanilla planifolia, B-glucosidase
OPTIMASI PROSES MASERASI VANILI (Vanilla planifolia Andrews) HASIL MODIFIKASI PROSES KURING [Maceration Process Optimation of Vanili (Vanilla Planifolia Andrews) from Modified Curing] Dwi Setyaningsih; Meika S Rusli; Melawati .; Ika Mariska
Jurnal Teknologi dan Industri Pangan Vol. 17 No. 2 (2006): Jurnal Teknologi dan Industri Pangan
Publisher : Departemen Ilmu dan Teknologi Pangan, IPB Indonesia bekerjasama dengan PATPI

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Abstract

Modified cured vanilla was processed to vanilla extract by maceration method. The aim of this research were to optimize the method of maceration, type of vanilla bean with highest vanillin content, extraction solvent composition,and other variables that could optimize the vanillin content and characterize the extract from half dried cured vanilla. The optimation used response surface method with 22 factorial and 23 factorial. One step of maceration could extract vanillin (average 2.3 g/l) much more than two steps maceration (average 2.1 g/l). Vanillin content of the half dried cured vanilla (average 0.98 g/l) was higher than cured vanilla 1 and cured vanilla 2 (average 0.41 g/l and 0.32 g/l). The suitable ethanol-water composition for half dried cured vanilla was 7:3 (vanillin content 1.78 g/l). The first optimation was conducted with two variables maceration time and sucrose concentrations. The maximum vanillin content of the first optimation was 4.5 g/l at maceration time of15.9 days and sucrose concentration of 7.3 g. The second optimation used two variables: maceration time and glycerol concentrations. The maximum vanillin content of the second optimation was 3.8 g/l at maceration time of 22 days and glycerol concentration 19.9 ml. The third optimation process used three variables:maceration time, sucrose concentrations and glycerol concentrations. The maximum vanillin content of the third optimation was 3.4 g/l at maceration time of 12 days sucrose concentration of 7 g, and glycerol concentration 4.7 ml. The characteristic of vanilla extract resulted from half dried cured vanilla maceration were vanillin content (3.4-4.5 g/l), total acid (380-410 ml 0.1 N NaOH/l), total ash (1.3-3.4 g/l), total soluble ash (0.8-2.9 g/l), alkalinity of total ash (462.6-536.7), alkalinity of soluble ash (139.1-216.5), and lead number (4.5-4.6). Key words : Vanilla planifolia, Optimization, vanilla ekstrak  
RETENSI VANILIN DAN PERUBAHAN WARNA EKSTRAK PEKAT VANILI SELAMA PENYIMPANAN [Vanillin Retention and Color Changes of Concentrated Vanilla Extract During Storage] Mira Sofyaningsih; Dr Sugiyono; Dwi Setyaningsih
Jurnal Teknologi dan Industri Pangan Vol. 22 No. 2 (2011): Jurnal Teknologi dan Industri Pangan
Publisher : Departemen Ilmu dan Teknologi Pangan, IPB Indonesia bekerjasama dengan PATPI

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Abstract

 The purpose of this research was to observe vanillin retention and color changes during storage of concentrated vanilla extract at the low temperature (10°C), room temperature (30°C), and high temperature (55°C) for 49 days. The methodology of this research consisted of vanilla curing process, vanilla extraction, evaporation of vanilla extract, formulation of concentrated vanilla extract, and measuring the vanillin retention and color change.The best products of concentrated vanilla extract were made with formula containing 10 ml vanilla extract, 10 ml high fructose syrup (HFS) 55% and 3 ml of carboxyl methyl cellulose (CMC) solution 1% and that made with formula containing 10 ml vanilla extract, 15 ml glucose syrup 75°Brix and 3 ml of CMC solution 1%. The vanillin retention of both formulas had a trend to descrease. The pattern of vanillin retention and color change during storage of both formulas followed linear equations.Thetemperature and period of storage significantly affected the color of concentrated vanilla extract. Both formulas did not show any differences in vanillin retention and color during storage at refrigerator and room temperature.
The Study On Microencapsulation Of Vanilla Extract Dwi Setyaningsih; Reni Rahmalia; . Sugiyono
Jurnal Teknologi Industri Pertanian Vol. 19 No. 2 (2009): Jurnal Teknologi Industri Pertanian
Publisher : Department of Agroindustrial Technology, Bogor Agricultural University

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Abstract

Natural vanilla extract microencapsulation was done by spray drying method, using maltodextrin DE10 and modified cassava starch (Flomax 8) as coating material. Selection of coating material ratio of maltodextrin DE10 : Flomax8 (1:0, 1:1, 0:1, 1:2, 2:1) was done as pre-treatment, resulted in an optimum ratio of 2:1. Three different treatments were applied: type of coating material (maltodextrin DE10, and maltodextrin DE10: Flomax8 = 2:1), coating material concentration (10, 20, and 30%) and vanilla extract - coating material ratio (3:2, 2:1 and 3:1). Type of coating material, coating concentration and ratio between vanilla extract and coating material gave a significant difference to the yield, vanillin content and vanillin recovery. Vanillin extract coated by maltodextrin DE10:Flomax8 2:1 gave yield, vanillin content and vanillin recovery higher than only maltodextrin. The highest vanillin content and vanillin recovery obtained from 30% concentration of coating material. The higher ratio of vanillin extract to coating material gave the higher vanillin content, but recovery was lower. The type of coating material gave a significant effect to the solubility of vanilla powder. The concentration of coating material and ratio between extract vanilla and coating material did not affect the solubility. The type of coating materials, coating material concentration and ratio between vanilla extract and coating material did not affect water activity of the obtained vanilla powder.
POTENCY FOR THE UTILIZATION OF RUBBER (Hevea Brasiliensis Muell.Arg) SEED AS AN ALTERNATIVE ENERGY SOURCE OF BIOKEROSENE Sarma Siahaan Dwi Setyaningsih Hariyadi
Jurnal Teknologi Industri Pertanian Vol. 19 No. 3 (2009): Jurnal Teknologi Industri Pertanian
Publisher : Department of Agroindustrial Technology, Bogor Agricultural University

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Abstract

 Pure plant oil could be obtained from various seeds, such as rubber seed. Rubber seed oil could be converted into biokerosene. The objective of this research was to explore the potency of biokerosene from rubber plantation both smallholder and goverment owned estate (PT. Perkebunan Nusantara). In addition, the ability of rubber seed biokerosene to ignite kerosene stove at households was also evaluated. The experimental design was Block Randomized Factorial in order to evaluate the yield from rubber seed extraction. We also set a Completely Randomized Factorial experiment to learn the influence of peeling and sun drying to the density, viscosity, and FFA (Free Fatty Acid), of extracted oil. Paired-t test was used for analyzing whether the characteristics of crude oil differed from those of biokerosene. The results showed that the oil yield was affected by peeling factor and not by sun-drying. The result showed that peeled rubber seeds yield was higher than that of intact seeds. Yield of crude oil and biokerosene from state owned as well as one from maintained plantation was higher yield than that from smallholder or un-maintained plantation. Factors of peeling and sun-drying did not affect the values of FFA, density and viscosity. Biokerosene added to kerosene could extend the duration of flame. The best mix proportion was 20% biokerosene and 80% kerosene which was further tested with the community on kerosene stoves. Keywords: biokerosene, kerosene stove, oil extraction, rubber seed.
BLENDING OF JATROPHA OIL WITH OTHER VEGETABLE OILS TO IMPROVE COLD FLOW PROPERTIES AND OXIDATIVE STABILITY OF ITS BIODIESEL Dwi Setyaningsih, Erliza Hambali, Sri Yuliani dan Djajeng Sumangat
Jurnal Teknologi Industri Pertanian Vol. 20 No. 3 (2010): Jurnal Teknologi Industri Pertanian
Publisher : Department of Agroindustrial Technology, Bogor Agricultural University

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Abstract

ABSTRACT Jatropha oil has rich in unsaturated fatty acids, but other tropical oils, such as palm oil and coconut oil, have high saturated fatty acid. Blending of jatropha biodiesel with soybean, rapeseed, palm and coconut biodiesels resulted in different  propertie, between properties of each pure compounds or even better than pure biodiesel. Jatropha biodiesel in concentration of 50-70% jatropha-coconut blend had better cloud point and pour point (9 oC and -6 oC, respectively), compare to jatropha biodiesel (12 oC, 0 oC) and coconut biodiesel (15 oC, 9 oC).   Blending of jatropha and coconut were further investigated using two methods, namely methods 1 was in the form of biodiesel and method 2 was in the form of oil before biodiesel processing. Blending method 2 resulted in higher cloud point and lower pour point compared to method 1 and the values were relatively constant. Blending of 55% of jatropha biodiesel with lauric biodiesel (75% lauric methylester) showed a minimum cloud point and pour point (-3 oC; -18 oC). This minimum point called eutectic point expressed an ideal equilibrium of liquid-solid among saturated medium chain alkyl esters and unsaturated long chain alkyl esters. Methylester composition of this biodiesel was 34.03% lauric, 0.31% miristic, 8.91% palmitic, 3.82% stearic and 46.17% oleic acids. This proved the important role of lauric acid, a medium chain saturated fatty acid, which was dominant in coconut biodiesel (48.11%).   Keyword: jatropha biodiesel, blending, cloud point, pour point 
OPTIMIZATION OF GLYSEROL TERT-BUTIL ETER PROCESS SYNTHESIS AS A BIODIESEL ADDITIVE Dwi Setyaningsih, Sri Yuliani dan Amri Solechan
Jurnal Teknologi Industri Pertanian Vol. 21 No. 1 (2011): Jurnal Teknologi Industri Pertanian
Publisher : Department of Agroindustrial Technology, Bogor Agricultural University

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Abstract

ABSTRACT Methyl esters of fatty acids, also known as biodiesel, made from transestherification of vegetable oil with methanol, have shown a lot of promise as alternative diesel fuels. However, biodiesel has some weaknesses that is poor of cold flow properties which can be a problem in temperate climate. Glycerol, as a by product of biodiesel process, can be synthesized become glycerol tert-butyl ether (GTBE) that can improve biodiesel cold flow properties. Etherification of glycerol with tert-butyl alcohol (TBA) catalyzed by bentonite was studied by influence of reaction time, temperature, and amount of catalyst. Central composite rotatable design (CCRD) was used to determine limitations, levels  for each factor, and the experimental design. Minimum level for reaction time was 6 hours and the maximum level was 10 hours. Minimum level for temperature was 60ºC and the maximum level was 80ºC. Minimum level for amount of catalyst was 2.5% and the maximum level was 7.5%. Total GTBE  yields was in the range of 8,958.99 ppm to 265,488.83 ppm. Optimal condition for syntheses GTBE was predicted at 4.9 hours of reaction time, 66.2ºC of reaction temperature, and 9.7% of catalyst with the yield after verification was 962,092.20. GTBE that has been  synthesized could reduce cloud point and pour point biodiesel by 3°C.  Keywords: biodiesel, etherification, glycerol tert-butyl ether (GTBE), optimization 
PROCESS IMPROVEMENT OF METHYL ESTER SULFONATE SURFACTANT PRODUCTION AND ITS FORMULATION FOR THE ENHANCED OIL RECOVERY (EOR) APPLICATION Mira Rivai, Tun Tedja Irawadi, Ani Suryani dan Dwi Setyaningsih
Jurnal Teknologi Industri Pertanian Vol. 21 No. 1 (2011): Jurnal Teknologi Industri Pertanian
Publisher : Department of Agroindustrial Technology, Bogor Agricultural University

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Abstract

ABSTRACT  Surfactant injection is one of the methods to reduce the remaining oil in reservoir. This is done by injecting a surface active substance into reservoir until the tension of water-oil interface can be decreased. In order to make this process working optimally, an appropriate surfactant that fits the condition and formation of water and reservoir is needed.  This research was aimed at getting the best design of production process of methyl ester sulfonate (MES) surfactant by using a continuous system of STFR  (single tube falling film sufonation reactor) with SO3 gas reactant and formulating MES surfactant for its application on EOR.  Process improvement resulted the best MES surfactant at treatment combination of dry air addition of 1.82 kg/hours and pH 8,  sulfonation time of 3-4 hours and purification without methanol addition.  The best MES-based surfactant formulation to be applied on EOR (carbonate field) was formula with MES surfactant composition of 0.3%, Na2CO3 of 0.3% and salinity level of 15,000 ppm.   Keywords: sulfonation, methyl ester sulfonate (MES), optimal salinity, alkaline, MES- based formula  
APLIKASI MINYAK SEREH WANGI (Citronella Oil) DAN GERANIOL DALAM PEMBUATAN SKIN LOTION PENOLAK NYAMUK Dwi Setyaningsih, Erliza Hambali dan Muharamia Nasution
Jurnal Teknologi Industri Pertanian Vol. 17 No. 3 (2007): Jurnal Teknologi Industri Pertanian
Publisher : Department of Agroindustrial Technology, Bogor Agricultural University

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Abstract

ABSTRACTIndonesia is one of the biggest producers of citronella oil in the world. The high production of citronella oil needs to be developed becoming new fractions and application into product. One of the applications is as active component in insect repellant in skin lotion product. In this research, skin lotion was produced by addition of citronella oil and geraniol as active component with parameter of percentage of active component (5.0, 7.5, and 10.0%) and three alternatives of process (process 1, process 2, and process 3). The parameters of analyses were emulsion stability, viscosity, emulsion capacity, pH, and total microbe.Citronella oil used in this research has several characteristics; namely density 0.8352, index refraction 1.4558, citronellal content 5.8% and geraniol content 2.4%. The result of this analysis show that addition of geraniol 5.0% in process 2 produced  the highest viscosity was 1.55 (x300 cP), the lowest pH (3.47), the highest emulsion stability (62.29%) and the lowest emulsion capacity (2.15). The conclusion according to that result was process 2 was produced the best of skin lotion formulation. In the next research all of the action from process 2 used for effectiveness experiment to mosquito bite. The results of the experiment show that all of skin lotions gave negative result to amount of mosquito bite at rabbit. Decreasing fraction of active component until 0.1% showed positive result by one bite of mosquito in the rabbit skin.
Co-Authors . Sugiyono Ade Kurniawan Agustiyana, Rosela Ahmad Riyadi Andini, Rina Widia Anggi Firdaus Agumsah Ani Suryani Ani Suryani Annisa Putri Anton Apriyantono Arief Riyanto Arum Nur Fitrah Atika Hermanda Bagus Ardi Saputro Bertoka Fajar SP Negara Chilwan Pandji Darmono Taniwiryono Dayu Dian Perwatasari Desi Musdaniaty Dewi Sondari Dina Prasetyowati Djumali Mangunwidjaja ediyansyah Edy Mulyono Egi Agustian Eka Rihan K, Eka Erliza Hambali FARAH FAHMA Farida Anggraini Firdausi, Stabita Fitriana Roselly Fitriani Kasim Harahap , Nur Layla Syafrina Harto Nuroso Hasmani Hayuni, Okta Ros Hermanda, Atika Hery Haerudin Hery Haerudin Hery Haerudin I Komang Gede Wiryawan I Wayan Arnata Ika Mariska Intan Purnamasari Irma Rumondang Jaini Fakhrudin Jihan Suraya Jonaldy Tanjung, Boma Juliejantiningsih , Yovitha Kartika Kartika Kartika Okta Purnama Khaidir Khaidir Khaidir Khaidir, Khaidir Khanifah, Rizka Nur Khaswar Syamsu Komang G. Wiryawan Lawang, Andi Tenri Liesbetini Haditjaroko M Luqmanul Hakim Maggy T Soehartono Maulidayanti, Esti Mega Meika S Rusli Meika Syahbana Rusli Melawati . Mira Rivai Mira Rival Mira Sofyaningsih Mufidah, Ratna Muhammad Nuur Faiziin Muhammad Syukur Sarfat Mujizat Kawaroe Kawaroe Mulyono Mulyono Mulyorini Rahayuningsih Nastiti Siswi Indrasti Neli Muna Neli Muna Nelwan, Leopold Oscar Nevianti, Devi Rizka Ayu Ngasbun Egar Nur Hidayati Nur Richana Nurmalia Muliati Ovi Yulianti Nurmilah Perwira, Wanda Gema Pratama, Riski Danan Putri, Chika Juliana Rahmiyati Kasim Reni Rahmalia Rienoviar Rienoviar Rizal Syarief Robbani, Muhammad Haqqiyuddin Rumondang, Irma Sapta Raharja Silvester Tursiloadi Siska Desri Wirahmi, Busman, Edrizal, Siti Rahmi Nuabdi Sitti Wajizah Sitti Wajizah Sri Windarwati Sriyanto Sriyanto Sudirman Sudirman Sudirman Sudirman Sugiyono . Suryati, Adelina Syafira Salsabila Syahbana, Meika Tentri Yera Idqa Ridmaningrum Titi Candra Sunarti Tun Tedja Irawadi Tun Tedja Irawadi Vitta Rizky Permatasari Vusvitha, Vastha Wasmen Manalu Wiharja Wiharja Yuana Susmiati Yuliani, Manis Zulhamdan