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DIFFERENTIATION OF Curcuma longa, Curcuma xanthorrhiza and Zingiber cassumunar BY THIN LAYER CHROMATOGRAPHY FINGERPRINT ANALYSIS

DIFFERENTIATION OF Curcuma longa, Curcuma xanthorrhiza and Zingiber cassumunar BY THIN LAYER CHROMATOGRAPHY FINGERPRINT ANALYSIS

the World Health Organization (WHO) [2]. Chromatographic fingerprint is a sufficient-used method in profiling the overall compound because the retention factor which represents the characteristics of component will represent the complexity of the analyte in the sample. Thin Layer Chromatography (TLC) is frequently used to obtain a fingerprint profile of the compounds that present in herbal medicines and its derivative products.

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VALIDASI METODE THIN-LAYER CHROMATOGRAPHY (TLC)- DENSITOMETRI PADA PENETAPAN KADAR KAFEIN DALAM KOPI

VALIDASI METODE THIN-LAYER CHROMATOGRAPHY (TLC)- DENSITOMETRI PADA PENETAPAN KADAR KAFEIN DALAM KOPI

Caffeine also known as 1,3,7 trimethylxanthine is an alkaloid compound that can be found in coffee, tea, and yerba mate plant. Caffeine in body has effect in enhancing both performance and allertness. The excessive intake of caffeine more than 200mg/day would cause many effect such as insomnia, headache, and nervous. So, it is necessary to determine caffeine concentration in coffee. This study aims to validate the Thin-Layer Chromatography-Densitometry method to determine caffeine concentration in coffee powder.

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The Effects of Shrinkage to Thin Layer Drying Characteristics of Temu Putih (Curcuma zedoaria (Berg) Roscoe)

The Effects of Shrinkage to Thin Layer Drying Characteristics of Temu Putih (Curcuma zedoaria (Berg) Roscoe)

In this study, the shrinkage effects on the thin layer drying model of temu putih herb slices was investigated. Numerous of thin layer drying have been suggested by researchers, either theoretical or empirical, but the role of shrinkage in the model is not clearly defined. The objective of this study is to observe the occurrence of shrinkage during thin layer drying of temu putih (Curcuma zedoaria (Berg) Roscoe) and analize its effects to the thin layer drying model. The experiments were conducted using a laboratory scale dryer equipped data acquisition and machine vision system. The drying condition was controlled at a combination of temperature and relative humidity, i.e at temperature 50 °C, 60 °C, 70 °C for 40% relative humidity (RH), and RH 20%, 30%, 40%, 50% for temperature 50 º C. The drying air velocity was set at range 0.78 m/s – 0.95 m/s
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The Strength And Stiffness Modulus Of Thin Layer Hot Mix Asphalt Concrete At Various Temperature COVER

The Strength And Stiffness Modulus Of Thin Layer Hot Mix Asphalt Concrete At Various Temperature COVER

The aims of this research were to achieve the viability of using asphalt 60/70 pen with different temperature on strength and stiffness modulus on thin layer HMA (4 cm) compared to Asphalt Concrete Wearing Course (6.8 cm). The other purpose is to get to know the effect of the using thin layer HMA (4 cm) in different climate region. All of the asphalt concrete mixtures of thin layer HMA and AC-WC which were used in this research based on Marshall Mix design according to Indonesian standard (Bina Marga 2010). The laboratories tests which have been conducted in this research were: indirect tensile strength (ITS), unconfined compressive strength (UCS) and indirect tensile stiffness modulus (ITSM) at temperature 10°C, 20°C, 40°C and 60°C.
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The Effects of Shrinkage to Thin Layer Drying Characteristics of Temu Putih (Curcuma zedoaria (Berg) Roscoe)

The Effects of Shrinkage to Thin Layer Drying Characteristics of Temu Putih (Curcuma zedoaria (Berg) Roscoe)

In this study, the shrinkage effects on the thin layer drying model of temu putih herb slices was investigated. Numerous of thin layer drying have been suggested by researchers, either theoretical or empirical, but the role of shrinkage in the model is not clearly defined. The objective of this study is to observe the occurrence of shrinkage during thin layer drying of temu putih (Curcuma zedoaria (Berg) Roscoe) and analize its effects to the thin layer drying model. The experiments were conducted using a laboratory scale dryer equipped data acquisition and machine vision system. The drying condition was controlled at a combination of temperature and relative humidity, i.e at temperature 50 °C, 60 °C, 70 °C for 40% relative humidity (RH), and RH 20%, 30%, 40%, 50% for temperature 50 º C. The drying air velocity was set at range 0.78 m/s – 0.95 m/s
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Surface Behavior of Rhodamine and Tartrazine on Silica- Cellulose Sol-Gel Surfaces by Thin Layer Elution

Surface Behavior of Rhodamine and Tartrazine on Silica- Cellulose Sol-Gel Surfaces by Thin Layer Elution

Physical and chemical interactions are the principles for different types of separation systems as the equilibrium dynamics on surface plays a key role. Surface modification is a way for selective separation at interfaces. Moreover, synthesis of gel silica by a sol-gel method is preferred due to the homogeneity and surface feature easily controlled. Cellulose can be added in situ to modified the silica features during the process. The further application for to study the interaction of rhodamine and tartrazine in its surface and their solubilities in mobile phase explains the possibility of their separation. This paper devoted to evaluating the surface behavior in term of adsorption and desorption of tartrazine and rhodamine on the silica-cellulose thin layer in different mobile phase. Some carrier liquids applied such as methanol, acetone, n-hexane, and chloroform. The result proves tartrazine and rhodamine are separated and have different behavior in different mobile phase. The retardation factors (R f ) of the mixtures suggest complexity behavior on silica-cellulose
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Optimasi Formula Mikroenkapsulat Minyak Sawit Merah Menggunakan Maltodekstrin, Gelatin dan Carboxymethyl Cellulose Dengan Proses Thin Layer Drying

Optimasi Formula Mikroenkapsulat Minyak Sawit Merah Menggunakan Maltodekstrin, Gelatin dan Carboxymethyl Cellulose Dengan Proses Thin Layer Drying

Puji dan syukur kepada Tuhan Yesus Kristus atas segala limpahan kasih karunia, berkat, dan penyertaan Nya, sehingga penulis dapat menyelesaikan tugas akhir yang berjudul ” Optimasi Formula Mikroenkapsulat Minyak sawit Merah Menggunakan Maltodekstrin, Gelatin dan Carboxymethyl Cellulose dengan Proses Thin Layer Drying” Dalam penyusunan tugas akhir ini penulis tidak terlepas dari dukungan dari beberapa pihak baik secara langsung maupun tidak langsung sehingga penulis dapat menyelesaikannya dengan baik. Oleh karena itu penulis ingin menyampaikan ucapan terima kasih yang sebesar-besarnya kepada : 1. Prof. Dr. Ir. Tien R Muchtadi, MS selaku dosen pembimbing akademik atas
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Kata-kata Kunci: Interface, lapisan tipis, SAP2000, CIRCLY 4, Bonding Stiffness. Abstract - Rentang Modulus dari Thin Layer yang Menunjukkan Kondisi Bonding Antar Lapisan Beraspal

Kata-kata Kunci: Interface, lapisan tipis, SAP2000, CIRCLY 4, Bonding Stiffness. Abstract - Rentang Modulus dari Thin Layer yang Menunjukkan Kondisi Bonding Antar Lapisan Beraspal

In order to support back calculation analysis which involved bonding factor between bituminous pavement layer, information of bonding condition at the interface is required which can be modeled as a thin layer. This thin layer has a stiffness modulus with a certain range of modulus related to its bonding condition. The objective of this research is to determine the range modulus with analytical approach using SAP2000 soft- ware. Involving various thin layer modulus starting from 1 MPa until 10000 MPa yield deflection values due to certain pavement loading using SAP2000. Using CIRCLY Program obtained the deflection in rough and smooth condition as reference to determining rough and smooth condition in deflection calculation using SAP2000. These range of modulus are deflection values which are calculated on rough condition with thin layer modulus 50 MPa and on smooth condition with thin layer modulus 1.6 MPa.
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STRUCTURE AND CHEMICAL COMPOSITION SEMICONDUCTOR MATERIALS Sn(Se0,4 S0,6) THIN LAYER PREPARATION OF TECHNIQUE VACUUM EVAPORATION APPLICATION FOR SE SOLAR.

STRUCTURE AND CHEMICAL COMPOSITION SEMICONDUCTOR MATERIALS Sn(Se0,4 S0,6) THIN LAYER PREPARATION OF TECHNIQUE VACUUM EVAPORATION APPLICATION FOR SE SOLAR.

technique, with the evaporation parameter at spacer 15 cm and 10 cm, vacuum pressure of 4x10 5 mbar and deposition time is 8 minute. The characterization in research using XRD (X-Ray Diffraction) to determine the crystal structure, the SEM (Scanning Electron Microscopy) determine the structure of a thin layer morphology, and chemical composition of the semiconductor material identified by using EDAX (Energy Dispersive X-Ray Analysis).

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Thin-Layer Chromatography for Binding Media Analysis

Thin-Layer Chromatography for Binding Media Analysis

Thin-layer chromatography is a separation technique that involves several steps. First, a solution made from a sample is applied to a coated plate. The carrier solvent of the sample solution evaporates and deposits the sample in a small spot or zone at the origin of the plate. The plate is then placed in a sealed vessel containing a small volume of an appro­ priate solvent mixture. As the solvent mixture travels up the plate by capillary action, the components from the sample travel up at different rates due to their interaction with the coating on the plate (the stationary phase) and the moving solvent system (the mobile phase) . This process is called the development of the plate. The plate is developed to achieve separated spots or bands. The plate is then removed from the solvent system, and the components of the sample are visualized. This usually involves reacting the component with a reagent that produces visible or fluorescent spots when observed under either normal or ultraviolet light. This pattern of spots seen for the binder sample is called the chromatogram.
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Development and validation of thin layer chromatography-densitometry method for analysis of mefenamic acid in tablet - Repositori Universitas Andalas

Development and validation of thin layer chromatography-densitometry method for analysis of mefenamic acid in tablet - Repositori Universitas Andalas

Mefenamic acid is routinely used as tablet dosage forms. Thin layer chromatography (TLC) promotes for higher separation efficiencies, shorter analysis time, lower amounts of mobile phase, and efficient data acquisition and processing. There are various analytical methods for their estimation of mefenamic acid but till date there is no TLC method for its analysis. The paper presents the development and validation of a new TLC method for analysis of mefenamic acid in tablet. Separation was performed on silica gel 60 F 254 plates. The mobile phase is comprised of
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Thin Layer Chromatography Fingerprints of Leaves of Three Guava Types

Thin Layer Chromatography Fingerprints of Leaves of Three Guava Types

Guava leaf contains chemical compounds having antioxidant activity. Quality control methods are needed to maintain the quality of raw materials. The objective of this research is to find the chromatographic fingerprints from guava leaves by using the profile of thin layer chromatography (TLC) which is developed into densitogram. Fingerprint patterns were developed in the form of TLC and densitogram generated by using the software Image J. Fingerprints were generated through optimization of mobile phase composition with the simplex centroid design (SCD). The leaves of three guava types were extracted using two- solvent composition of 96% and 70% methanol. The extracts contained flavonoids and tannins which were detected qualitatively. SCD evaluation shown that the best fingerprints based on its resolution spots from extract methanol 70% were white guava (JBP) and red guava (JBM) with 5 spots and 6 spots, respectively, while extract metanol 96% for guava 7 (JB7) resulted 5 spots. All fingerprints were obtained from chloroform:ethyl acetate as mobile phase with ratio for JBP, JBM, and JB7 were (0.6:0.4), (0.7:0.3), and (0.8:0.2), respectively. Antioxidant activities represented by IC 50 value for JBP, JBM, and JB7 were 10.73, 9.45 and
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The phytochemical screening and thin layer chromatography results of Jatropha

The phytochemical screening and thin layer chromatography results of Jatropha

Results: Extracts that was produced from 500 grams of red castor dry seed powder with 2500 ml of methanol solvent was 250 ml thick reddish brown fl uid. Phytochemical screening with a test tube showed positive results of alkaloid by the formation of deposits in Meyer test, Wagner test, and Dragendorff test. Screening the methanol extracts of red castor seed also showed positive results on saponins by foam test and Lieberman- Burchard test. Positive results on Killiani Keller tests and Kedde test suggests that red castor bean extract contains cardenoline and bufadienol. Thin-layer chromatography analysis showed that the red castor bean extract is positive for terpenes with the formation of spots on the silica gel plate when terpenes was sprayed (cerium sulfate reagent).
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Pengeringan Lapisan-Tipis Irisan Singkong Menggunakan Pengering Infrared Thin-Layer Drying Of Cassava Chips Using Infrared Dryer

Pengeringan Lapisan-Tipis Irisan Singkong Menggunakan Pengering Infrared Thin-Layer Drying Of Cassava Chips Using Infrared Dryer

This study is aimed to evaluate the characteristics of the thin-layer drying of cassava chips using a pilot scale infrared dryer to meet the needs of small and medium enterprises. The drying experiments are carried out at two levels of temperature set-points viz. 50 and 60°C respectively. Every 30-minute the drying air temperature is measured and the chips is analyzed for its moisture content. Cassava chips with 6 kg weight and 60–68 percent moisture content on wet basis is dried in the dryer. It is found that the drying time decreases with an increase in temperature set point and approximately 44–62 percent of the moisture is removed during the drying for 3-4 hours. With regard to drying kinetics, two commonly used mathematical models sre examined with the experimental data. It is found that the Page model provides a good fit between the experimental and predicted moisture ratio values compared to that of Henderson- Pabis model.
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Effect of Tin Electrode (Sn), Electrode Distance and Thin Layer Size of Zinc Phthalocyanine (ZnPc) to Resistance Changes with Ozone Exposure

Effect of Tin Electrode (Sn), Electrode Distance and Thin Layer Size of Zinc Phthalocyanine (ZnPc) to Resistance Changes with Ozone Exposure

The previous research showed that the thin layer of ZnPc deposited on the PCB can be utilized as ozone gas sensor. However, it has short durability due to rapid rusted therefore cannot be stored for a long time[8]. This study was employed tin (Sn) as an electrode. The previous studies have investigated that tin compounds has been utilized to grow SnCl 4 .5H 2 O on the surface of the glass using fluorine (F) dopant [9], SnO 2

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BAB II TINJAUAN PUSTAKA 2.1 Pengeringan. - Karakteristik Pengeringan Coklat dengan Mesin Pengering Energi Surya Metode Thin Layer

BAB II TINJAUAN PUSTAKA 2.1 Pengeringan. - Karakteristik Pengeringan Coklat dengan Mesin Pengering Energi Surya Metode Thin Layer

Seperti dijelaskan sebelumnya, penerapan sistem energi matahari ini adalah untuk mempercepat waktu proses pengeringan dari pengeringan yang biasa dilakukan yaitu dengan penjemuran langsu[r]

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Karaktiristik Pengeringan Coklat dengan Mesin Pengering Energi Surya Metode Thin Layer

Karaktiristik Pengeringan Coklat dengan Mesin Pengering Energi Surya Metode Thin Layer

4.4.1 Neraca Kalor Pengeringan Sample III Data temperature hasil pengujian pada sample III ditunjukkan pada tabel berikut : Tabel 4.13 Temperatur Harian Sample III Tanggal April 201[r]

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Model and Simulation of Deep Bed Clove Drying: Effect of Fermented Treatment

Model and Simulation of Deep Bed Clove Drying: Effect of Fermented Treatment

two kind of treatment those are (a) fermented cloves, it covered with four layer of black plastic during 40 hours, (b) non-fermented cloves. Both of the cloves were dried on several coupled of temperature and relative humidity. The equipment used was bed-dryer. The thin-layer drying of clove has been obtained using mathematical model of infinite slab (Whitaker dan Young, 1972):

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