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JOURNAL OF CHEMICAL NATURAL RESOURCES (JCNaR)

JCNaR
Website

Published by TALENTA PUBLISHER

ISSN : - EISSN : 26561492 DOI : https://doi.org/10.32734/jcnar.v4i1.9353

Core Subject : Science,

Biochemistry, Genetics & Molecular Biology Chemistry Materials Science & Nanotechnology

Journal of Chemical Natural Resources (JCNaR) is a peer-reviewed biannual journal (February and August) published by TALENTA as an open access journal. The aim of the journal is to provide a medium to exchange ideas and information related to research and knowledge in disciplines of organic chemistry, biochemistry, analytical chemistry, inorganic chemistry and physical chemistry. The journal also receives systematic reviews, meta- analysis and review article on the new issues in the fields of chemistry and natural sciences. Submission to this journal implies that the manuscript has not been published or under consideration to be published in another journal.

Arjuna Subject : Kimia(semua kategori) - Kimia Organik

Articles 132 Documents

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Analysis of Iron (Fe), Copper (Cu), and Zinc (Zn) on Param Traditional Medicine
Journal of Chemical Natural Resources Vol. 2 No. 1 (2020): Journal of Chemical Natural Resources
Publisher : Talenta Publisher

Param is well known traditional medicine for keeping healthy and treating diseases used by Karo Ethnic groups in North Sumatera. Param is a powder made of various nutritious plants and therefore its contents of the heavy metal were determined by using Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) for qualitative analysis and Atomic Adsorption Spectrophotometry (AAS) for quantitative analysis. The result obtained for the analysis param taken from two samples were 11.814mg/kg and 25.4 mg/kg for Fe, 0.658 mg/kg and 4.536 mg/kg for Cu, and 12.728 mg/kg and 15.184 mg/kg for Zn. Param used as external medicine the content of Fe was 29.36 mg/kg, Cu was 7.368 mg/kg, and Zn was 27.688 mg/kg. The content of all was found in metal, fulfilling the Standart of the Food and Drug Regulatory Agency.

Study on The Use of Genjer Plant (Limnocharis flava) as Adsorbent of Copper (Cu2+), Lead (Pb2+), and Zinc (Zn2+) Metal Ion in Water Chairuddin
Journal of Chemical Natural Resources Vol. 2 No. 1 (2020): Journal of Chemical Natural Resources
Publisher : Talenta Publisher

The use of Genjer (Limnocharis flava) as an adsorbent for ions of Copper (Cu2+), Lead (Pb2+), and Zinc (Zn2+) contents in the water has been studied. Firstly, Genjer powder was cut to pieces, dried, blended, and activated with HCl 10% for 24 hours. The two grams powder of Genjer was activated by HCl 10% added into each 100 mL copper (Cu2+) standard solution, lead (Pb2+) standard solution, and zinc (Zn2+) standard solution with a concentration 20 mg/L. Stirred for 24 hours, filtered and measured concentrations ions of copper (Cu2+), lead (Pb2+), and zinc (Zn2+) using an Atomic Absorption Spectrophotometer (AAS). The result of the research showed that the powder of Genjer (Limnocharis flava) that has been activated by HCl 10% can absorb copper (Cu2+) 96.083%; lead (Pb2+) 99.33% and zinc (Zn2+) 96.28%.

Determination Study of Measurement Uncertainty On Crude Palm Oil (CPO) Using Several Chemical Analysis Methods Chairuddin
Journal of Chemical Natural Resources Vol. 2 No. 1 (2020): Journal of Chemical Natural Resources
Publisher : Talenta Publisher

The measurement uncertainty on crude palm oil (CPO) for the determination of free fatty acid using the neutralization titration method base AOCS Ca5a â€“ 40, and the determination of the Fe2+ using the spectrophotometric method have been studied. The process of uncertainty estimation is based on specifying measurand, identifying uncertainty sources, quantifying uncertainty using type A (by the statistical analysis of series of observations) and type B (by the other statistical analysis of series observations) evaluation of uncertainty, then converting them to deviation standards, and the last step was to calculate and combine the uncertainty standard and uncertainty expanded. Spreadsheet software MS Exel 2007 based on Kragten spreadsheet uncertainty calculation method was used to simplify the calculation of the combined standard uncertainty. The combined standard uncertainty was multiplied with a coverage factor of 2, and the expanded uncertainty for analysis determination of free fatty acid using the neutralization titration method based on AOCS Ca5aâ€“40 with a concentration of 0.1612 mol/L in the sample solution was Â±0.0002 mol/L. Whereas the expanded uncertainty for the determination of Fe2+ using a spectrophotometric method with a concentration of 0.131 mg/L in the sample solution was Â±0.083 mg/L and calculated using a coverage factor of 2.14.

Study of The Utilization of Pineapple Leaves (Ananas cosmosus) as Adsorbent for Lowering Copper Ion Content (Cu2+), Iron (Fe3+), and Zinc (Zn2+) in the Water. Chairuddin
Journal of Chemical Natural Resources Vol. 2 No. 1 (2020): Journal of Chemical Natural Resources
Publisher : Talenta Publisher

. It has been conducted the use of pineapple leaf (Pineapple cosmosus) as an adsorbent to reduce ion copper (Cu2+), iron (Fe3+), and zinc (Zn2+) contents in water. First pineapple leaf powder is cut to pieces, dried, finely ground, and activated with 10% HCl by soaking for 24 hours. Two grams of pineapple leaf powder, which was previously activated by 10% HCl added into each 100 mL ions of copper (Cu2+), iron (Fe3+), and zinc (Zn2+) standard solution 20 mg/L, stirred homogeneously, and left for 24 hours, then filtered. The concentration ions of copper (Cu2+), iron (Fe3+), and zinc (Zn2+) infiltrate were determined by using Atomic Absorption Spectrophotometer (AAS). The result of this research showed that pineapple leaf powder-activated 10% HCl can absorb 95.98% of copper (Cu2+), 79.16% of iron (Fe3+), and 88.71% of zinc (Zn2+).

Effect of Glycerol Plastic Concentrationon on The Characteristics of Calcium Alginate-Based Edible Film Jamaran Kaban
Journal of Chemical Natural Resources Vol. 2 No. 1 (2020): Journal of Chemical Natural Resources
Publisher : Talenta Publisher

Calcium alginate-based edible film has been made by way of immersion of sodium alginate into calcium chloride (CaCl2) solution to form calcium alginate gel. In this case, using glycerol is a plasticizer with the variation of concentrations were 0,% 10%, 20%, and 30%. The characterization of edible films has been determined such as thickness, tensile strength, elongation, DTA, SEM, swelling, biodegradable and FT-IR analysis. Edible film characterization showed that with increasing glycerol plasticizer, thickness and tensile strength became greater, while elongation became lower. SEM analysis revealed that surface morphology became smoother and DTA analysis showed greater degradation temperature in the increase of glycerol. Characteristics of swelling showed that edible film without glycerol has to increase in weight with the addition of glycerol. The swelling value increased at the beginning of the measurement but increased after 10 interest. FT-IR analysis revealed that the stretching vibration form of the OH group changed from sharp to broad in the addition of glycerol. The biodegradable result showed an increase in the edible film weight and whole degradation after 21 days.

Analysis of Melamine on Powdered Milk-Based Diazoation Reactions with Eugenol Reagent By Spectrophotometry Juliati Br Tarigan
Journal of Chemical Natural Resources Vol. 2 No. 1 (2020): Journal of Chemical Natural Resources
Publisher : Talenta Publisher

The analysis of melamine on the milk-based diazotization reaction with eugenol was carried out. The presence of primary aromatic amine on melamine was reacted to sodium nitrite, while chloride acid formed diazonium salt, and then diazonium salt reacts with eugenol to form a colored azo compound. The absorbance was measured spectrophotometrically at a maximum wavelength of 470 nm. Analysis of melamine on the sample milk was determined by using a standard addition method. In this research, the optimization of concentration and incubation time was observed at the maximum formation of azo dyes. The optimization results were obtained at a concentration of eugenol of 9.10-3M, NaNO2 of 9.10-4 M, HCl of 0.25 M, and an incubation time of 5 minutes. The content of melamine in the milk sample was 2.513.10-5 M.

Comparison of Vitamin C, Î²-Carotene, and Water Content from Tamarillo (Solanum betaceum Cav.) Fruit and Tamarillo Jam Zaidar, Emma
Journal of Chemical Natural Resources Vol. 2 No. 1 (2020): Journal of Chemical Natural Resources
Publisher : Talenta Publisher

A research on the comparative analysis of levels of vitamin C, Î²-carotene, and water content, from a tamarillo fruit and its jam. Analysis of levels of vitamin C is done by the iodometric titration method, the analysis of levels of Î²-carotene performed by UV-VIS spectrophotometry, and water content analysis performed by the method of thermogravimetry. The research, found that levels of the vitamin C from tamarillo fruit were 12,3 mL/g and its jams is 6,16 mL/g, levels of Î²-carotene from the fruit is 180.91 ppm and its jam is 136.52 ppm, and water content of the fruit is 88.92% and its jams were 46.96%.

Effect of Addition of Chitosan Derived From Shrimp Shell to Reduce The Caffeine Content of Powder Coffee
Journal of Chemical Natural Resources Vol. 2 No. 1 (2020): Journal of Chemical Natural Resources
Publisher : Talenta Publisher

A study on the effect of the addition of chitosan derived from shrimp shells to reduce the caffeine content of powder coffee has been conducted. Chitosan was used as an adsorbent to reduce the caffeine content in coffee powder with mass variations of as much as 0,2; 0,4; 0,6; 0,8; and 1 g in the extraction of coffee powder. The number of caffeine contents was analyzed by using spectrophotometry. The result obtained showed that the caffeine content without the addition of chitosan is 0.168 % while caffeine content after the addition of the mass variations of 0.2; 0.4; 06; 0.8, and 1 g chitosan, the caffeine content decreased to 0,083% ; 0,043 % ; 0.019 % ; 0,014 % and 0,006 %, respectively.

Comparative Study of The Absorption of Active Zeolite and Ethylenedimintetraacetate (EDTA) Modified Zeolite as Absorbent in a Mixture of Copper (II), Nickel (II), and Zinc (II) Ions Agusnar, Harry
Journal of Chemical Natural Resources Vol. 2 No. 1 (2020): Journal of Chemical Natural Resources
Publisher : Talenta Publisher

Research about the absorption of activated zeolite and EDTA-modified zeolite has been successfully conducted to absorb Cu2+, Ni2+, and Zn2+ ions. Natural zeolite used from Sarulla, Pahae Jae, North Sumatera. This research aims to determine the effect of activated zeolite and EDTA-modified zeolite to absorb Cu2+, Ni2+, and Zn2+ ions in the mixture. In this research, natural zeolite was sifted with a 120 mesh sieve, then calcinated at 300ÂºC, and activated with HCl 15%. The natural zeolite was modified with EDTA 0,1 M that was applied as an absorbent on Cu2+, Ni2+, and Zn2+ ions which each of the initial concentrations was 50 mg/L with variations of contact time were 1, 2, and 3 hours and weight of adsorbent were 0,25 g/25 mL, 0,5 g/25 mL, and 1 g/25 mL and also the determination of metal concentration was used ICP-OES method. The results obtained showed that EDTA-modified zeolite and activated zeolite were able to decrease the concentration of metal, but the absorption ability of EDTA-modified zeolite was bigger than activated zeolite. The result of the absorption experiment of Cu2+, Ni2+, and Zn2+ ions showed that the best absorption has been carried out with a contact time was 3 hours and the weight of absorbent was 1 g/25 mL. The percentages of decrease in this research by adding activated zeolite as an absorbent on Cu2+, Ni2+, and Zn2+ ions were 95.99.77.92, and 81,62%, respectively. In addition, the percentages of decreasing by adding EDTA-modified zeolite as an absorbent Cu2+, Ni2+, and Zn2+ ions were 98.79, 96.07, and 97,54%, respectively.

Determination of Optimum pH and Temperature for Crude Extract of Lipase Enzyme from Sprouts Palm Oil Seeds (Elaeis guineensis Jacq) Against Hydrolysis RBDPO (Refined Bleached Deodorized Palm Oil)
Journal of Chemical Natural Resources Vol. 2 No. 1 (2020): Journal of Chemical Natural Resources
Publisher : Talenta Publisher

Determination of optimum pH and temperature for crude lipase enzyme activity from oil palm seeds germination had been done. Oil palm germination is made by separating the seed from palm coconut soaking time process, drying, heated and seed germination in temperatures 39 to 40ÂºC during 60 days, 30ÂºC during 21 days, and 25ÂºC during 14 days. Centrifugations obtained crude lipase enzyme during 30 minutes with the speed of rotation 5000 rpm and 10000 rpm, and addition of (NH4)2SO4. Crude lipase enzyme diluted by buffer phosphate pH 7.0. The activity test of crude lipase enzyme done by measurement of free fatty acids levels obtained from hydrolysis process of RBDPO (Refined Bleached Deodorized Palm Oil) as substrate by titrimetric methods with temperature variations 300; 350; 400; 450; 500C and pH variations 6.0; 6.5; 7.0; 7.5 and 8.0

Page 3 of 14 | Total Record : 132

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Irwana Nainggolan

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Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Irwana Nainggolan

Contact Email irwana@usu.ac.id

Phone +6261-8214290

Journal Mail Official jcnar@usu.ac.id

Editorial Address Jalan Bioteknologi No. 1 Kampus USU Pd. Bulan, Medan 20155, Sumatera Utara - Indonesia

Location Unknown, Unknown INDONESIA

Abstract

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Abstract

Contact Name
Irwana Nainggolan

Contact Email
irwana@usu.ac.id

Phone
+6261-8214290

Journal Mail Official
jcnar@usu.ac.id

Editorial Address
Jalan Bioteknologi No. 1 Kampus USU Pd. Bulan, Medan 20155, Sumatera Utara - Indonesia

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Unknown,

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INDONESIA