bluuebunny/crossref_metadata_2025_split huggingface dataset:
PERUBAHAN BEBERAPA SIFAT FISIS DAN KIMIA PASTA GAMBIR SELAMA PENYIMPANAN
Authors: Kasim Anwar , Sub’han Yoli , Indeswari Netty Sri 
Published: October 2017

ABSTRACT Studying about the change of physical and chemical properties Gambir paste during 28 days was conducted in order to know the change primarily the chemical content and physical properties as storage consequences. Experimental design was used completely randomized design for 4, 8, 12, 16, 20, 24, and 28 days storage periods. Replication was two and as a control was used paste non treatment. F-test and T-Dunnet test were applicated for statistical analysis. The result indicated that treatment can not change physical properties but change the chemical properties gambir paste. The initial water contents of gambir paste was 72.26% and after 28 days storage 71.68%. Color of gambir paste was still yellow during storage. The initial non water soluble substance was 6.96% and after 28 days storage 4.69%. The initial non alcohol soluble substance was 14.83% and after 28 days storage 13.15%. The initial chatechin contents was 72.22% and after 28 days storage 65.38%. The initial tannin contents 38.68% and after 28 days storage 35.12%. Total ash content of gambir paste was 2.72%. Keywords : gambir, paste, storage, change, properties
PENCIRIAN DAN UJI AKTIVITAS KATALITIK ZEOLIT ALAM TERAKTIVASI
Authors: - Charlena , Purwaningsih Henny , Rosdiana Tina 
Published: October 2017

ABSTRACT Natural zeolite reserves are spread in Indonesia, but they are not yet used optimally. Generally, natural zeolite have poor crystalline, various pore size, low catalytic activity, and high contaminant. Natural zeolite need to be activated and modified before it can be used. The objectives of this research were to activite the natural zeolite that already got acid and thermal treatments and to characterize it and catalytic activity was tested in interesterification reaction. Fourier transformation infrared (FTIR) spectra showed that the structure of natural zeolite activated by acid and thermal (NZAT) treatments were damaged. While, natural zeolite structure activated with acid (natural zeolite acid /NZA) did not show significant different to natural zeolite (NZ). Result of Si/Al ratio analysis showed that Si/Al ratio NZA higer than Si/Al ratio NZAT. The result of cation analysis by atomic absorption spectroscopy shoed that the general content of Na, K, Fe and Ca in the catalyst decreased because of acid and thermal treatments. Surface area and pore volume increased by the treatments. Catalytic activity of NZA in interesterification reaction gave a white cork product and in yield 35.78 %. Keywords : natural zeolite activated, catalytic activity, FTIR.
KANDUNGAN NIKOTIN DALAM ASAP ROKOK PASIF CIGARET NON FILTER TERKENAL DI INDONESIA
Authors: Sudji Ikhwan Resmala , - Mustanir 
Published: October 2017

ABSTRACT Passive smoking has higher health risk than active smoking like coronary heart diseases, lung cancer and mortality level. Nicotine is main contain in cigarettes smokes that caused addictive. The nicotine level of the side stream smoke from Indonesia non-filter cigarettes brand X was analyzed by Gas chromatography-Mass spectrophotometer and Cundiff-Markunas methods for the level of nicotine employing modified smoking standard, namely two puff/min and then were trapping in HCl 0.1 N. The total alkaloid result from 13.745 g burned tobacco (10 cigarettes) was 0.130 g. The nicotine as total alkaloids levels with Cundiff-Markunas methods was 66.860% and the nicotine level with gas chromatography-mass spectrophotometer was 10.05%. Keywords: nicotine, cigarettes smokes, passive cigarettes smokes.
IN VITRO ANTIANGIOGENESIS ACTIVITY OF STANDARDIZED EXTRACTS OF Piper sarmentosum Roxb
Authors: Hussain Khalid , Ismail Zhari , Sadikun Amirin , Ibrahim Pazilah , Malik Amin 
Published: October 2017

ABSTRACT This study was undertaken to investigate the antiangiogenesis activity of standardized extracts/fractions of the leaf of Piper sarmentosum, using rat aorta model. The pulverized leaf was extracted sequentially and methanol extract was further fractionated with hexane, chloroform and ethylacetate. Both extracts and fractions were standardized by reverse phase HPLC with UV detection at 260 nm, using two markers, sarmentine and sarmentosine. Chloroform and methanol extracts have exhibited antiangiogenesis activity of 100% and 20% respectively. Antiangiogenesis activity of hexane and chloroform fractions was found to be 10% and 90% respectively, while ethylacetate fraction was found to be inactive. The analysis of most active extract and fraction has exhibited different profile by HPLC on the basis of amides. This study indicates that chloroform extract and fraction have promising antiangiogenesis activity and have potential for diseases involving angiogenesis. Keywords : antiangiogenesis activity, Piper sarmentosum Roxb.
MEMPELAJARI STRUKTUR DAN SIFAT NANO LOGAM TEMBAGA MENGGUNAKAN PROGRAM PM3
Authors: Sukma Mulyati , Kusuma Theresia Sita , Arief Syukri 
Published: October 2017

ABSTRACT A research to study the electronic and chemical characteristics of Copper which nano structure using PM3 program has been done. This program part of HyperChem pro 6.0 that performed by Pentium 4. This research has nano 2D and 3D structure (atom number 2-30). Results of computations showed that Copper can make nanosheets, nanorods and nanotubes structure that have the different electronic characteristics from its crystals structure. Fortunately, copper with nano structure could develop as insulator and semiconductor materials. Keywords : Copper, nano structure, nanosheets, nanorods, nanotubes.
DEGRADASI ZAT WARNA SUDAN I SECARA SONOLISIS DAN FOTOLISIS DENGAN PENAMBAHAN TiO2-ANATASE
Authors: - Safni , Loekman Umiati , Febrianti Fitra , - Maizatisna , Sakai Tadao 
Published: October 2017

ABSTRACT Degradation of Sudan I dye had been done with sonolysis and photolysis by adding anatase-TiO2. Sonolysis method were performed using an ultrasound with frequency of 45 kHz. Photolysis method were performed using an irradiation of UV light with λ = 359 nm. Degradation of 4 mg/L Sudan I with addition of 0.1000 g anatase-TiO2 at pH = 7.0, temperature 25 ± 1°C, percentage of degradation 64.04% within 180 minutes sonolysis. Degradation of 4 mg/L Sudan I using photolysis with addition of 0.1000 g anatase-TiO2 at pH = 7.0 and percentage of degradation 100% within 180 minutes photolysis. Degradation of 4 mg/L Sudan I using sonolysis and photolysis simultaneously with addition of 0.1000 g anatase-TiO2 at pH = 7.0 and percentage of degradation 94.04% within 180 minutes treatment. Keywords : degradation, sonolysis, photolysis, Sudan I, anatase-TiO2.
SENG OKSIDA (ZnO) SEBAGAI FOTOKATALIS PADA PROSES DEGRADASI SENYAWA BIRU METILEN
Authors: Darajat Syukri , Aziz Hermansyah , Alif Admin 
Published: October 2017

ABSTRACT A research aimed to study the influence of ZnO white powder on photodegradation of methylene blue using Merkuri lamp (l = 365 nm) as light source have been reached. A suspension of ZnO (40 mg) mixed with 25 mL of methylene blue solution (initial concentration of 0.015 mM) then was illuminated for 60 minutes showed degradation and quantum yield amounting 23.84% and 3.55 molecules photon-1, respectively. These results mean that by using ZnO as photocatalyst there is about four times efficiency than the one without ZnO either in case of time consumed or the number of photon applied. In kinetic study, it has been observed that such semiconductor-catalyzed photochemical reaction obeys the first order rule where rate constant and half time consecutively were 0.0029 minute-1 and 231 minutes. Keywords : photodegradation, photocatalyst, quantum yield, semiconductor, photochemical reaction.
PEMBUATAN ASAP CAIR DARI LIMBAH KAYU SUREN (Toona sureni), SABUT KELAPA DAN TEMPURUNG KELAPA (Cocos nucifera Linn)
Authors: - Yefrida , Putri Yani Kasuma , Silvianti Richi , Lucia Novita , - Refilda , - Ndrawati 
Published: October 2017

ABSTRACT The waste of red cedar wood, coconut husk and coconut shell has not been well used. They had been used as traditional cooking fuel and also direct food smoking process by community, but they still had several disadvantages. Those could be treated by the simple processing, they can produce new high economics product. In this research, the use of waste red cedar wood, coconut husk and coconut shell as resources of liquid smoke by pyrolization followed by condensation has investigated. Liquid smoke is condensates of smoke which have experienced storage and screening to separate the tar and particulate matter. Liquid smoke that was produced were different in color and smells, light brown and smells of smoke of red cedar wood burn, blackness of brown and smells like burning smoke of coconut husk and brown with smelled like the smoke of burned coconut shell. The pH of liquid smoke of red cedar wood was 3.34, liquid smoke of coconut husk is 3.48 and liquid smoke of coconut shell was 3.21, where its value was influenced by the component of acid which were the biggest component in coconut shell liquid smoke. The result of characterization using GC/MS indicated that there were 27 compounds and the main component of liquid smoke of red cedar wood is acetic acid (45.17%), 2-propanone (15.75%), 1-hidroxy-2-propanone (7.36%), furfural (5.50%) and phenol (4.17%), 27 compounds with the main component of liquid smoke of coconut husk is acetic acid (42.00 %), phenol (25.99%), 2-propanone (7.04%), furfural (4.06%) and guaiacol (3.32%), and 37 compounds with the main component of coconut shell liquid smoke are acetic acid (51.99%), phenol (19.90%), methyl acetate (5.37%), furfural (4.56%), hydroxyl acetone (2.90%), guaiacol (2.62%) and syringol (1.85%). Keywords: waste red cedar wood, coconut husk, coconut shell, liquid smoke, GC/MS
CHARACTERIZATION AND KINETIC ADSORPTION OF THE DIFFERENT SOURCES ACTIVATED CARBON FOR LIQUID-PHASE ADSORPTION
Authors: - Sutrisno , - Yusnaidar 
Published: October 2017

ABSTRACT The activated carbon from oil-palm stones of agriculural by-products from palm-oil mills in several tropical countries, a coconut shells and a solid waste exploring coals mining (ex-coal mining) were studied in this paper. The activated and characterized carbon are carried out both chemical and adsorptive properties. The different chemical activators such as H3PO4, KOH, H2SO4 in the different ratio and also different temperature from 550° to 850°C was done. The adsorptive properties are including the textural properties of the activated carbons are investigated. It was found that the temperature and hold time had significantly influences on the surface area and pore size in the distribution of the activated carbon. The optimum conditions for preparing these activated carbons from chars. paralyzed at 600°C to derive the highest specific surface areas were found to be an activation temperature of 750°C for phenol adsorption of KOH for carbon from coconut shells, H3PO4 for oil palm stone and ex-coal mining activator in 850°C. For chemical characterization, AAS and a Fourier transform infrared (FTIR) spectroscopy were used to identify the inorganic components and surface organic functional groups of the activated carbons, respectively. For the determination of the adsorptive capacity of the activated carbons, adsorption of phenol was carried out using spectrophotometric analyses. Experimental results showed that phenol and iodine could be adsorbed effectively by the three different activated carbons. The adsorptive capacity of these activated carbons was comparable with those of some commercial activated carbons by using Juan, R-S et al’s model[1]. Keywords: activated carbon, oil palm stone, coconout shell, ex-coal maining, phenol reduction, kinetic adsorption, adsorptive capacity
DEGRADASI SENYAWA PARAQUAT DALAM PESTISIDA GRAMOXONE® SECARA FOTOLISIS DENGAN PENAMBAHAN TiO2-ANATASE
Authors: Era Yuni , - Safni , Suyani Hamzar 
Published: October 2017

ABSTRACT This research is conducted to know whether the photolysis method by adding TiO2-anatase can degrade the paraquat compound in Gramoxone pesticide. Photolysis method is conducted by using UV 10 watt lamp at the wavelength of 365 nm. The result shows that photolysis method could degrade the paraquat compound at 4.0 mg/L concentration as 16.02% after 60 minutes irradiation. Paraquat compound with the similar concentration by adding 10 mg unmixed TiO2-anatase could degrade 26.01% after 60 minutes irradiation and 62.30% by mixing TiO2-anatase. Furthermore, paraquat with the same concentration and TiO2-anatase addition could degrade 99.54% after 240 minutes irradiation. Keywords : degradation, photolysis, paraquat, anatase-TiO2
EVALUATION OF PHYSICO CHEMICAL CHARATERISTICS OF SILK FIBRES OF Litsea cubeba Pers., REARED ON DIFFERENT HOST PLANTS
Authors: Hamzah Faizah 
Published: October 2017

ABSTRACT The golden-yellow silk fibres obtained from Litsea cubeba Pers., westwood reared on leaves of three different host plants belonging to the family Lauraceous, were studied to evaluate their characteristic physico – chemical properties. The host plants M. bombycina King, L. cubeba Pers., Juss and L. citrate Roxby, significantly influenced silk length, width, sericin and amino acid contents of the fibres. The contents of the predominant amino acid; glycine (10.55 μg), aspartic (5.43 μg) and (7.15 μg), were higher in fibres obtained from cocoons of L. cubeba Pers., fed on M. bombycina, while alanine (9.46 μg) was higher in the fibres of cocoons obtained from the two host plant. The breaking load (17.191 g) and tenacity (3.562 g) were higher in cocoons from the host plant L. cubeba Pers. The X-ray diffraction patterns showed the amorphous nature of the fibres obtained from the cocoons of L. cubeba Pers., fed on L. polyantha and L. citrate while fibres obtained from cocoons from M.bombycina showed amorphous bands with little tendency to two dimensional order. Above all, the natural golden yellow hue of the fibre, which is one of the most important and commercially valuable added properties of this particular silk variety, was better retained in the fibres extracted from cocoons of L. cubeba Pers., larvae reared on M. bombycine. Keywords : amino acids, breaking load, L. cubeba Pers., tenacity, x-ray diffraction
KEMAMPUAN ADSORPSI KITOSAN UNTUK ION LOGAM TIMBAL (Pb2+) DAN KADMIUM (Cd2+)
Authors: Hendri John , - Rahmawati , Laila Aspita 
Published: October 2017

ABSTRACT Chitosan is natural polymer that has been known to posses the capacity to adsorb various transition metals. This capacity of adsorption is resulted from the ability of chitosan to form complex compound with metal, especially Pb and Cd. The formation of chitosan-metal complex is enabled by the presence of active hydroxil group in chitosan molecule. The results of this study on adsorption of Pb2+ and Cd2+ revealed the existence of linear relationship between the amount of the metal adsorbed with concentration of the metal tested. It was found that for Pb2+, the maximum adsorption was 10.32 mg/g which was achieved for the metal concentration of 50 mg/L, and 24.998 mg/g for Cd2+ at metal concentration of 100 mg/L. The optimum contact time for adsorption was found to be 24 hours for both metals. The adsorption was found to take place with the adsorption energy of 29.82 kJ/mol for Pb2+ and 17.23 kJ/mol for Cd2+. Keywords: chitin, chitosan, adsorption, transition metal, and toxic metal
MINYAK ATSIRI DARI Toona sinensis DAN UJI AKTIVITAS INSEKTISIDA
Authors: Santoni Adlis , Nurdin Hazli , Manjang Yunazar , Achmad Sjamsul A. 
Published: October 2017

ABSTRACT Volatile components from leafs of Toona sinensis (Meliaceae) were isolated by distillation water-vapour method and analyzed using GC/MS. Forty-eight component were identified, and eight major components are Germacrene-D, Germacrene-B, α-Terpinene, α-Humulene, β-Caryophyllene, α-Elemene, Bicyclogermacrene and α-copaene. Insect activity of the essential oil against Crosidolomia pavonana were tested. The activity of the essential oil with concentration 25% (mortality 73.3%), concentration 50% (mortality 83.3%) and concentration 75% (mortality 90%). Keywords : Toona sinensis (Meliaceae), essential oil, Crosidolomia pavonana, and mortality.
STUDI SERAPAN ION SENG(II) OLEH BIOMASSA MIKROALGA (Tetraselmis chuii)
Authors: - Bahrizal , - Rahadian Z 
Published: October 2017

ABSTRACT In the present work, the process of zinc-ion adsorption by T. chuii biomass have been investigated. This investigation intend to determinate capacity of adsorption the biomass for zinc-ion in water. A weight of 100 mg biomass was put into 6 ppm of the metal-ion solution whose pH varied from 5.0 to 7.0. Then, these solutions were stirred for 30 minutes. After filtering, the metal-ion concentration in the filtrate was determined by atomic absorption spectrometry. The amount of ion adsorbed by the biomass was taken as the difference between the initial and final concentration of the solution. Further, the same method was carried out to the varied concentration. The result showed, the optimum pH for metal-ion adsorption by the biomass is 5.5, having adsorption value 1.106 mg/g. Capacity of zinc-ion adsorption was obtained by varied concentration, yielded value of 3.557 mg/g. Keywords : T. chuii, biomass, adsorption, spectrometry
PENGARUH RASIO MOL, SUHU DAN LAMA REAKSI TERHADAP BILANGAN IOD, BILANGAN ASAM, BILANGAN PEROKSIDA DAN KANDUNGAN SULFONAT SURFAKTAN DARI CPO
Authors: Hidayati Sri , - Illim 
Published: October 2017

ABSTRACT A surfactant is a surface-active agent that can be produced by chemical or biochemical synthesis. The main characteristic of a surfactant is having polar and non polar groups at the same molecule (amphiphilic molecules) and forming head-tail configuration. This research as aimed to obtain the optimum condition (reaction temperature, sulphonation reaction and molar ratio) of sulphonation process in producing MES from CPO methyl ester and to investigate the characteristic of MES produced. Measurements conducted include iodine value, acid value, peroxide value and absorbance of Sulfonate. Experimental design used was Response Surface Method (RSM) and Central Composite Design (CCD) with three factors. MES resulted from this best condition had following characteristic or CPO was obtained with ratio of reactants of 1:1.5, reaction time of 4.5 hour and reaction temperature of 108.9ºC with Acid value of 13.32 mg KOH/g sample, Iod value of 41.12 Iod g/100 sample, Peroxide value of 7.6 mmole/1000 g, sulfonat absorbance of 0.76 AU. Keywords : metil ester sulfonat, acid value, iod value, peroxide value
PROFIL FITOKIMIA DAN AKTIFITAS ANTIACETYLCHOLINESTERASE DARI DAUN TABAT BARITO (Ficus Deltoidea Jack)
Authors: - Suryatir , Nurdin Hazli , - Dachriyanus 
Published: October 2017

ABSTRACT Phytochemical study and antiacetylcholinesterase assay by using bioautography method were carried out on polar fraction of tabat barito (Ficus deltoidea jack) leaves. The result of this studies showed that the leaves contained flavonoid, terpenoid, steroid and fenolic compounds. This extract gave positive result on antiacetylcholinesterase. Keywords: Antiacetylcholinesterase, Ficus deltoidea Jack
DEGRADASI POLIBLEND POLI(ASAMLAKTAT-KO-ASAMGLIKOLAT) DENGAN POLI(ε-KAPROLAKTON) SECARA IN VITRO
Authors: Kemala Tetty , Sjahriza Achmad , Adijuwana Hendra , Hardianti Mardiana 
Published: October 2017

ABSTRACT Polymer has many applications in human life, one of them is in the field of health. Polymer synthetics like polylactic acid (PLA), polyglycolic acid (PGA), poly(ε-caprolactone) (PCL), and poly(lactic acid-co-glycolic acid) (PLGA) were kind of polyesters that is many used in field of health. Many researchers have already made research about degradation of PLA, PGA, PCL, and PLGA. However, there is no one doing research about degradation of combination between this two polymers, one of them is polyblend of PLGA and PCL. Polyblend were made of four compositions, that were PLGA(90:10):PCL 3:1, PLGA(75:25):PCL 3:1, PLGA(90:10):PCL 5:1, and PLGA(75:25):PCL 5:1. Degradation was carried out for eight weeks by using phosphate buffer pH 7.4 and incubation temperature of 37°C. Degradation of the polymer was observed by mass remained, and intrinsic viscosity. The result showed that composition PLGA(75:25):PCL 5:1 was the fastest in degradation compared to other compositions. It was showed by the decrease in mass until 89.06% and the change in intrinsic viscosity until 20.13%. Keywords: PLGA, PCL
CHEMICAL COMPOSITION AND ANTIBACTERIAL ACTIVITY OF THE ESSENTIAL OIL OF THE Toona sureni (Blume) Merr
Authors: Ekaprasada M. Taufik , Nurdin Hazli , Ibrahim Sanusi , - Dachriyanus 
Published: October 2017

ABSTRACT The essential oil composition of the Toona sureni (Blume) Merr leaf was analyzed by GC-MS. More than 68 peaks, representing 99.99% of total oil, forty three components were identified, this represents 80.65% of the total oil component. The major components were α-terpinene (9.58%), α-copaene (8.39%), bicyclogermacrene (7.61%), δ-cadinene (6.65%), β-elemene (4.88%), germacrene-D (4.65%), δ-selinene (3.58%), caralene (3.10%), β-caryophyllene (2.88%), α-cubebene (2.82%), δ-gurjunene (2.20%), and (-)-isoledene (2.05%). The antibacterial activity of the essential oil of Toona sureni (Blume) Merr leaf was evaluated using disk diffusion method. The oil was effective on the inactivation of Escherichia coli, Staphylococcus aureus and Bacillus subtilis. Keywords: Toona sureni (Blume) Merr, antibacterial activity, GC-MS, essential oil
DEGRADASI SENYAWA 2,4 (DIKLOROFENOKSI) ASAM ASETAT DALAM PESTISIDA SIDAMIN 865 AS SECARA FOTOLISIS DENGAN PENAMBAHAN TiO2-ANATASE
Authors: Hakim Abinul , - Safni , Suyani Hamzar , Sakai Tadao 
Published: October 2017

ABSTRACT Degradation of 2,4-Dichlorophenoxyacetic Acid (2,4-D) in Sidamin 865 AS pesticides had been carried out by photolysis with adding anatase-TiO2. Photolysis method were performed using an irradiation of UV-light at λ 365 nm, 10 W. The degradation of 20 mg/L 2,4-D without addition of anatase-TiO2 was 6.88% within 90 minutes treatment. Degradation of 20 mg/L 2,4-D by photolysis with addition of 0.1000 g anatase-TiO2, degradation was 31.55% within 90 minutes irradiation without stirring and it was 95.42% within 90 minutes irradiation with stirring. Keywords : photolysis, 2,4-dichlorophenoxyacetic acid, anatase-TiO2
IN VITRO STUDIES ON CALCIUM OXALATE CRYSTAL GROWTH INHIBITION OF STROBILANTHES CRISPUS EXTRACTS
Authors: Itam Afrizal , Ismail Zhari , Abdul Majid Amin Malik Shah 
Published: October 2017

ABSTRACT Strobilanthes crispus L. (Acanthaceae) has been used locally in traditional medicine for kidney stone and related diseases. These plant extracts have the ability to inhibit the calcium oxalate crystal growth, where the ability of water extract is higher than those of the 70% acetone, methanol and acetone extracts. The ability to inhibit the calcium oxalate crystal growth of these extracts is lower than that of sodium citrate as positive control. Keywords: Strobilanthes crispus, Acanthaceae, crystal inhibition, calcium oxalate