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Jurnal Periodic Jurusan Kimia UNP

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Published by Universitas Negeri Padang

ISSN : - EISSN : 23391197 DOI : https://doi.org/10.24036/p.v11i2.113715

Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Materials Science & Nanotechnology

Periodic adalah jurnal nasional yang berisi artikel-artikel bidang ilmu kimia, seperti bidang Kimia Analitik, Kimia Fisika, Kimia Anorganik, Kimia Organik dan Biokimia. Jurnal ini mempublikasikan hasil penelitian original, komunikasi singkat, dan artikel review. Artikel yang telah diterbitkan dalam jurnal ini berarti bahwa kegiatan penelitian yang diterbitkan adalah belum, dan tidak akan diterbitkan di tempat lain. Periodic (e-ISSN 2339-1197) diterbitkan oleh Jurusan Kimia dan mulai tahun 2022 disebut Departemen Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Negeri Padang, Indonesia. Periodic terbit berdasarkan berdasarkan surat edaran Direktorat Jenderal Pendidikan Tinggi No. 152/E/T/2012 tentang publikasi karya tulis ilmiah dan terbit sejak Oktober 2012.

Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)

Articles 21 Documents

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Search results for , issue "Vol 2, No 2 (2013)" : 21 Documents clear

Uji Bioaktivitas Antidiabetes Ekstrak Etil Asetat dari Kulit Buah Jengkol (Pitecellobium jiringa (Jack) Prain ex King) pada Mencit Putih (Mus musculus L) Jantan Elfi Yenti; Iryani Iryani; Erda Sofjeni
Jurnal Periodic Jurusan Kimia UNP Vol 2, No 2 (2013)
Publisher : Departemen Kimia FMIPA UNP

Diabetes mellitus is a metabolic disease characterized by blood glucose level that exceed normal limits (hyperglycemia). Treatment of this disease can be done with medicall and herbs. Among the herbal treatment is to use plants such as pandanus pandan wangi, sambiloto, rind mahkota dewa and rind jengkol (Pithecellobium jiringa (Jack) Prain ex King) which has antidiabetic effect. We have done a research of antidiabetic bioactivity of ethyl acetate extract from the rind jengkol on white male mice. The goal of research to determine the effect of ethyl acetate extract of the rind jengkol in decreasing blood glucose levels of the male white mice (Mus musculus L.), and to determine the dose and timing of the ethyl acetate extract in lowing blood glucose level to the olwest point. Research was conducted with on experimental study with a completely randomized design (CRD) with two factor variation is doses of ethyl acetate extract (125, 250, and 500 mg / kg mice) and treatment time (60,90,120, and 150 minutes). This study uses a glucose tolerance test. Blood glucose level of mice were measured using a Glucose Multicheck NESCO ®. Data were statistically analyzed using analysis of variants (ANOVA), followed by Duncan's multiple reng test. The result showed that the ethyl acetate extract of the rind jengkol on white male mice gives the effect on decreasing the mean blood glucose level, which Fcalculated> Ftable. Fcalculated is 10.93, while the F table is 4.77 (0.01 α). Dose of ethyl acetate extract rind jengkol that gives the highest blood glucose level drop is 500 mg / kg with a treatment time of ethyl acetate extract of rind jengkol 150 minutes.

Studi Kopresipitasi Zn2+ Menggunakan Al(OH)3 sebagai Kopresipitan Yollafebrisa Wizul; Indang Dewata; Edi Nasra
Jurnal Periodic Jurusan Kimia UNP Vol 2, No 2 (2013)
Publisher : Departemen Kimia FMIPA UNP

Research of study copresipitation Zn2+ using Al(OH)3 as coprecipitant has been done. This study aims to determine the optimum conditions for coprecipitation of Zn2+ by Al(OH)3, and influence of foreign ions. This study uses variation pH about 5,0 – 10,0; variation of eluent volume about 8,0 – 14,0; variation of concentrated HNO3 volume about 1,0 – 5,0; and variation of concentration Cu2+ about 0,8; 1,2; 1,6; 2,0 and 2,4. Measurement concentration of Zn2+ using Atomic Absorption Spectroscopy (AAS) with wavelength of 213,9 nm. The result showed the optimum conditions occur at pH about 8, 12 mL of eluent and 1 mL of concentrated HNO3 with the absorption capacity of 0,074 mg/g. Meanwhile, the presence of foreign ions such as Cu2+ has influenced the coprecipitated Zn where concentration of the coprecipitated Zn decreased with increasing the concentration of foreign ions.

Pemanfaatan Lumpur Limbah Cair Industri Crumb Rubber Sebagai Adsorben Ion Cr(VI) yang Diaktivasi dengan KOH Mardiati Mardiati; Salmariza Sy; Mawardi Mawardi
Jurnal Periodic Jurusan Kimia UNP Vol 2, No 2 (2013)
Publisher : Departemen Kimia FMIPA UNP

Wastewater treatment with activated sludge method creates other waste in sludge form that becomes new problem for the crumb rubber industry. It is necessary to find a solution for their utilization. Research on utilization of sludge of crumb rubber industry as an adsorbent of ion Cr (VI), which is activated by KOH has been carried out with variations treatment of adsorbent from fresh sludge and from the sludge that carbonized and activated with KOH. The results revealed that the sludge contain high silica and alumina which is 49.02% and 16.498% respectively, that mean it can be used as an adsorbent. The optimum adsorbent pH of activated sludge was pH1 and pH2 for fresh sludge. The optimum contact time obtained at 120 minutes and the optimum concentration of Cr (VI) for each adsorbent was 70 mg / L. the maximum absorption capacity for Cr (VI) adsorption by Langmuir equation by activated sludge adsorbent is at 2.232 mg / g fresh sludge and adsorbent for 2,075 mg / g.

OPTIMASI TANAH NAPA SEBAGAI ADSORBEN ION LOGAM Cd (II) Atina Khairat; Mawardi Mawardi; Hary Sanjaya
Jurnal Periodic Jurusan Kimia UNP Vol 2, No 2 (2013)
Publisher : Departemen Kimia FMIPA UNP

The effort of handing waste which containing heavy metals examined continuesly, once of effort is adsorption method. In the research, examined about optimum condition determinating of metal ion Cd (II) adsorption by Napa soil adsorption from Solok The Aripan’s area. The napa containts silica 70,979 % and alumina 20,748 %, the amount of silica and alumina in napa almost equals it’s concentration with natural zeolite. The purpose of research is to determine the effect of napa maximum adsorption capacity on metal ions Cd (II), as well as the effect of initial concentration solution, pH solution, particle size of adsorbent, heating temperature adsorbent and flow rate eluent. The research was conducted in two phases, that is the preparation and conduct of the examined. The preparation stage includes the prepare of the tools, materials and samples. The implementation stage begins with a preparation of samples, then used it as the metal ion adsorbents Cd (II). Measurement of the ions Cd (II) concentration conducted with SSA at wavelength 283,3 nm. These results indicate that the optimum initial concentration is 150 mg/L, pH solution is 4, while the particle size is 850 ʮm, temperature of heating the adsorbent is 125 0C, and the flow rate is 20 drops/minute. By using the langmuir adsorption isotherm equation obtained maximum adsorption capacity of the napa metal ions Cd (II) is equal to 0,999 mg/g. The adsorption of metal ions Cd (II) at waste water in Chemical Laboratory Mathematic and saint Faculty UNP has adsorption efficiency 68,72 %.

Uji Bioaktivitas Ekstrak Etil Asetat Kulit Manggis (Garcinia mangostana L.) sebagai Antidiabetes pada Mencit Putih (Mus musculus L.) Jantan Sri Hastuti Siregar; Iryani Iryani; Erda Sofjeni
Jurnal Periodic Jurusan Kimia UNP Vol 2, No 2 (2013)
Publisher : Departemen Kimia FMIPA UNP

Diabetes mellitus represents a disease marked with blood glucose level that exceeding situation of normal boundary ( hiperglikemia). Treatment of this disease can be done with medicall and alternativety. Medication of alternativety by using materials of flora owning effect of hipoglikemia like ethyl acetate extract of mangosteen rind (Garcinia mangostana L.). This study about activity determination of antidiabetes ethyl acetate extract of mangosteen rind. This study to know influence giving of ethyl acetate extract mangosteen rind to degradation of blood glucose level of the white male mice (Mus musculus L.), and to determine effective treatment time and dose to blood glucose level of the white male mice. Glucose blood levels determined with glucose tolerance method use appliance of NESCO Multicheck Glucose®. Dose variation ethyl acetate extract of mangosteen rind the used 125, 250 and 500 mg/kg BW with time variation of 60, 90, 120, and 150 minutes. The decreasing blood glucose of analysed statistically by using analysis of variant (ANOVA) and followed by Duncan’s multiple reng test. The decreasing result of examination of KGD (blood glucose level) with dose 125, 250 and 500 mg/kg BW give effect of blood glucose levels meaning, where calculated F value > critical F value. Price of calculated F value is 6,25, while critical F value is 4,77 (0,01 α). Dose of ethyl acetate extract mangosteen rind that gives the highest blood glucose level 20,4 % is 500 mg/kg BW with time a time of ethyl acetate extracts of mangosteen rind 150 minutes.

Optimasi Analisa Kadar ß Karoten Dalam Jagung (Zea mays.L) Dengan Metoda HPLC Terhadap Pengaruh Lama Perebusan, Variasi Eluen Dan Kolom Endang Widaya Nengsih; Budhi Oktavia; Sri Benti Etika
Jurnal Periodic Jurusan Kimia UNP Vol 2, No 2 (2013)
Publisher : Departemen Kimia FMIPA UNP

Corn contains a variety of important chemical compounds; one of them is vitamin A. Nowadays, a shortage of vitamin A becomes a problem for people in whole the world, especially for developing countries, including Indonesia. However, this problem can be reduced by increasing pro-vitamin A which is the precursor of vitamin A. The Pro-vitamin A is obtained from one of Indonesian staple food. It is corn. Unfortunately, the cooking process of corn can reduce the content of vitamin A precursors or β-carotene. The effect of boiling on β-carotene content can be analyzed by HPLC method, a UV-Vis detector at wavelength of 449 nm with C-8 column and an organic solvent of methanol 100%. Retention time for β-carotene is 6, 20 minutes. The effect of long boiling toward decreasing of β-carotene contents has been tested in this research. The result of β-carotene contents for long boiling in 20 minutes and 30 minutes after boiling process are 56, 02% and 68, 32%.

Inhibisi Korosi Baja oleh Ekstrak Serbuk Gergaji Kayu dalam Medium Air Laut Putri Hartika; Yerimadesi Yerimadesi; Hardeli Hardeli
Jurnal Periodic Jurusan Kimia UNP Vol 2, No 2 (2013)
Publisher : Departemen Kimia FMIPA UNP

The using of steel support building system in some productions in Indonesia, such us oil refineries, cooling systems production, shipbuilding and marine equipment. The sea is a corrosive environment so the metals which stay in the sea easy to corrosion. One of all effort to reduce the rate of corrosion of steel is the use of organic inhibitors such as tannins, nicotine and lignin. Wood sawdust is one natural ingredient that contains lignin. These compounds can complex with iron. This study aims to utilize wood sawdust extract as corrosion inhibitor of steel in medium of sea. Wood sawdust was extracted by using alkali method. The rate of corrosion and steel corrosion inhibition efficiency with wood sawdust extracts were determined by using the gravimetric method (the reduction of steel weight before and after corrosion). Based on the results of the study showed that the extract of wood sawdust can reduce the corrosion rate of steel in the medium of the sea with corrosion inhibition efficiency of 38.8% on 30 ppm the extract concentration. The analysis of steel surfaces using a stereo microscope with a magnification 40 times. It can seen the difference surfaces between coated steel and uncoated with wood sawdust extract in medium of the sea. Coated steel less rusty than uncoated.

Studi Kopresipitasi Co(II) Menggunakan Kopresipitan Al(OH)3 Secara Spektrofotometri Serapan Atom (SSA) Monika Yulia; Indang Dewata; Edi Nasra
Jurnal Periodic Jurusan Kimia UNP Vol 2, No 2 (2013)
Publisher : Departemen Kimia FMIPA UNP

Has conducted research on the study of coprecipitation Co(II) using copresipitan Al(OH)3 by Atomic Absorption Spectrophotometry. This study aims to find the optimum conditions such as pH coprecipitation, volume of coprecipitan and the volume of nitric acid as eluent and to see efect of Ni(II) to coprecipitation Co(II). Results of analysis using SSA coprecipitation prove that the optimum conditions obtained in a relatively at base pH of the solution that is pH 8, where the condition is colloidal Al(OH)3 formed maximum. At acidic pH colloid formation process is not maximized, while at higher pH colloids formed will dissolve again into tetra hidroksoaluminat ions. Maximum Coprecipitan volume occurs at 12 mL Al3+ 0,2 M, which is the case in vulome maximum absorption of Co2+ 50 mL 1 ppm by 2,0 mmol colloidal Al(OH)3 while at higher volumes there is a reduction of the metal cation uptake due to competition between the Al metal is more electropositive and have fingers ion is smaller than the cations Co(II). The optimum conditions of volume nitric acid as eluent occurred on volume of 1 mL with absorption capacity by Al3 was 0.0905 mg / g, where as in the volume of eluent managed to extract maximum metal cations while the volume is higher dilution solution causes a decrease in the concentration of metal cations soluble in the eluent. The addition of nickel metal ions affect coprecipitation of metal kobalt because cobalt and nickel is a 3d transition which has a tendency of the same characteristic.

DEGRADASI METHYL VIOLET SECARA FOTOLISIS DAN SONOLISIS DENGAN KATALIS TiO2/SiO2 Belina Harnum; Hardeli Hardeli; Hary Sanjaya
Jurnal Periodic Jurusan Kimia UNP Vol 2, No 2 (2013)
Publisher : Departemen Kimia FMIPA UNP

Degradation of methyl violet dye had been done by photolysis and sonolysis with adding TiO2/SiO2 catalyst. This study aims to determine the optimum time for degradation and optimum dopan silica (SiO2). Photolysis method were performed using an irradiation of UV light l= 254 nm and sonolysis using an ultrasound with frequency 45 kHz. Result methyl violet degradation products obtained under optimum conditions identified by GC-MS. The optimum time for degradation of methyl violet photolysis is 270 minutes, the addition of silica optimum dopan occurs on addition of 25% SiO2, with percentage of degradation (%D) is 96.52%. The optimum time in the degradation of methyl violet in sonolysis photolysis is 270 minutes and the addition of silica optimum dopan occurs on addition of 25% SiO2, with percentage of degradation (% D) is 76.19%. Identification of the GC-MS results obtained showed many peaks that have occurred in the degradation of methyl violet molecules.

ANALISIS TEMBAGA (Cu) DAN TIMAH (Sn) DALAM JAGUNG (Zea mays L.) KEMASAN KALENG SECARA SPEKTROFOTOMETRI SERAPAN ATOM Fanny Novelia Ningsih; Zul Afkar; Bahrizal Rizal
Jurnal Periodic Jurusan Kimia UNP Vol 2, No 2 (2013)
Publisher : Departemen Kimia FMIPA UNP

Corn (Zea mays L.) is one of the most important food crop in the world. Now a days, there is development in production of canned corn. The media growing corn is possible if using sand and canned, a canned that has possiblity to heavy metal contamination in product of canned corn. This research has purpose to know some kind of solution and volume of best solution in analysis of copper and tin inside canned corn by using atomic absorption spectrofotometry. This research use a wet metode of destruction, the destruction process using the solvent variation: HNO3 p.a, HCl p.a, aquaregia and volume variation : 40, 50, 60 ml. The results of this study showed the highest copper and tin content in the corn canned obtained by using HNO3 p.a 50 ml. The copper contamination use solution HNO3 p.a 50 ml values are 2,4596 mg/kg (Xa), 1,46684 mg/kg (Xb), 1,9882 mg/kg (Y), and 0,9609 mg/kg (Z). The tin contamination use solution HNO3 p.a 50 ml values are 7,5086 mg/kg (Xa), 7,0153 mg/kg (Xb), 6,6779 mg/kg (Y), and 8,1854 mg/kg (Z). The closer to the expary date, the higher values of heavy metal contamination.

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Journal Mail Official periodic@fmipa.unp.ac.id

Editorial Address Departemen Kimia, FMIPA, UNP Jalan Prof. Dr. Hamka, Air Tawar, Padang, Sumatera Barat

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Contact Name
Budhi Oktavia

Contact Email
budhioktavia@fmipa.unp.ac.id

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-

Journal Mail Official
periodic@fmipa.unp.ac.id

Editorial Address
Departemen Kimia, FMIPA, UNP Jalan Prof. Dr. Hamka, Air Tawar, Padang, Sumatera Barat

Location
Kota padang,

Sumatera barat

INDONESIA