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JOURNAL OF CHEMICAL NATURAL RESOURCES (JCNaR)
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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Isolation and Identification of Phenolic Compounds from Sea Grape (Coccoloba uvifera (L.) L) Pasaribu, Albert; Lena, Wirda
Journal of Chemical Natural Resources Vol. 5 No. 1 (2023): Journal of Chemical Natural Resources
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jcnar.v5i1.11984

Abstract

Isolation and identification of phenolic compounds from Sea Grapes (Coccoloba uvifera (L.) L.) leave, where as much as 1700 g have been macerated using methanol. The concentrated methanol extract was dissolved in water and partitioned with ethyl acetate. Ethyl acetate concentrated extract was separated by column chromatography with chloroform as eluents: methanol 90:10; 80:20; 70:30; 60:40 v/v. The compound obtained was purified by column again using chloroform: ethyl acetate 70:30 v/v with the resulting was 10 mg of brownish yellow paste with a value of Rf = 0.5. The resulting compounds were then analyzed using a UV-Vis, FT-IR, and 1H-NMR spectrophotometer. Based on the data analysis, the results showed phenolic compounds in Sea Grape.
Adsorption of Free Fatty Acids from Crude Palm Oil Using Calcium Silicate (CaSiO3) Adsorbent Glycerol Template sembiring, seri bima; Siahaan, Ananda Putra
Journal of Chemical Natural Resources Vol. 5 No. 1 (2023): Journal of Chemical Natural Resources
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jcnar.v5i1.11985

Abstract

The adsorption of free fatty acids (FFA) in crude palm oil (CPO) using two types of adsorbents, namely Calcium Silicate (CaSiO3) template 5% glycerol (CTG5) and Calcium Silicate (CaSiO3) template 10% glycerol (CTG10). The experimental results showed that the titration method determined the decrease in FFA levels in CPO. This study used mass variations of adsorbent as much as 0.5 g, 1 g, and 1.5 g and agitation time (stirring) for 1, 3, 5, and 7 minutes. Based on the adsorption process, the most significant FFA adsorption results were obtained by using a CTG5 adsorbent with an adsorbent mass of 1.5 g and stirring time for 7 minutes at 80% with the weight of FFA adsorbed as much as 0.203 g FFA of 0.254 g FFA in 2 g of CPO.
Chemical Components Analysis of Kencur (Kaempreria galanga L) Essential Oil Using GC-MS Method and Its Insecticide Tests on Fruit Fly (Bactrocera sp.) Surbakti, Darwis; Simangunsong, Dedy Christopher
Journal of Chemical Natural Resources Vol. 5 No. 1 (2023): Journal of Chemical Natural Resources
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jcnar.v5i1.11986

Abstract

The hydrodistillation method isolated the essential oils of Kencur (Kaempreria galanga L) using the Stahl apparatus. It was distilled for ± 5-6 hours to produce as much as 0.89% (w/w) essential oil. The chemical components of Kencur essential oil were analyzed using GC-MS, consisting of 7 compounds which seven compounds could be identified, name: Limonene (2.39%), Cineol (2.22%), and terpenes (0.80%). Hexane (1.51%), Borneol (13.23%), Methyl cinnamate (1.50%), ethyl ester (78.35%) and its insecticide test from Kencur essential oil showed Bactrocera sp. mortality. The highest was 96.7% in the 3% ginger rhizome essential oil concentration
Synthesis of Cellulose Ether from Alkoxylyted Epoxide Methyl Esters Fatty Acids Rubber Seed Oil with Cellulose Ginting, Adil; Keliat, Rayzki Ananta
Journal of Chemical Natural Resources Vol. 5 No. 1 (2023): Journal of Chemical Natural Resources
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jcnar.v5i1.11987

Abstract

The alkoxylation reaction was carried out between the fatty acid methyl ester epoxide of rubber seed oil (RSO) and cellulose to produce cellulose ether. RSO was obtained from rubber seed by extraction method with n-hexane solvent followed by a purification process including a degumming stage, bleaching and neutralization. The RSO obtained was further dimetanolized with a NaOH catalyst producing a fatty acid methyl ester which is then epoxidized with a performance acid to give the epoxide compound. The resulting epoxide compound was reacted with cellulose in an isopropanol solvent, producing ether cellulose. RSO obtained as much as 46.75% with a free fatty acid content of 0,2184%, iodine amount, and unsaturated fatty acid content of 82,4%. The resulting ether cellulose was found to be vibrations in the area waves number of (ῡ) = 1118 cm-1, which indicates the presence of C-O-C bonds from the ether, which can indicate that an etherification reaction has occurred in cellulose. This is also supported by the presence of vibrations at wave numbers (ῡ) = 1743 cm-1, (ῡ) = 1165 cm-1, (ῡ) = 1118 cm-1, (ῡ) = 725 cm-1, each of which shows the existence of a bond (C = O) from the ester, CH3 bond, C – O bond from the ester and bond to carbon (CH2) n where n ≥ 4, which is not found in cellulose but is found in cellulose ether. It shows that an alkoxylation epoxide reaction of MEAL rubber seed oil with cellulose has occurred, which will produce cellulose ether.
Utilization of Carboxymethyl Cellulose (CMC) from Coconut Coir Waste (Cocos nucifera) as a Stabilizer in Red Bean (Phaseolus vulgaris L) Vegetable Milk Nasution, Rumondang Bulan; Simanungkalit, Roberto Carlos
Journal of Chemical Natural Resources Vol. 5 No. 1 (2023): Journal of Chemical Natural Resources
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jcnar.v5i1.11988

Abstract

Carboxymethyl cellulose (CMC) synthesis from coconut coir waste provides an alternative that can be used as a stabilizer to manufacture red bean milk. The first step is to isolate alpha-cellulose with a 2% NaOH solution. Second, the etherification process is alkalization with isopropanol and 17.5% NaOH solution to produce alkaline cellulose, and then the carboxymethylation process with sodium monochloride acetate (NaMCA) and characterized by FT-IR. The resulting carboxymethyl cellulose is purified by centrifugation. Red bean milk was analyzed using proximate analysis, viscosity, percent stability, pH, and organoleptic content by varying CMC 0.1, 0.2, and 0.5%. The alpha cellulose obtained was 13.37%, and the CMC produced from the etherification and purification process was 5.97 g. The characterization of alpha-cellulose showed (OH) at wave number 3441cm-1, and the CMC characterization showed carbonyl (COO-) at wave number 1604.77 cm-1 and group ether (CH2-O-CH2) at wave number 1419.77. Proximate analysis of red bean milk protein content of 2.75%, carbohydrates 10.27%, fiber 8.5%, and fat 18.57% and results based on viscosity and percent stability were obtained by adding 0.5% CMC and organoleptic test results adding CMC preferably with 0.3%, the texture is not too thick and even, and the aroma of red beans is typical.
Feed Modification Using Carrot Flour to Improve Growth and Brightness Koi Fish Color Zaidar, Emma; Sihaloho, Sahat Pangihutan
Journal of Chemical Natural Resources Vol. 5 No. 1 (2023): Journal of Chemical Natural Resources
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jcnar.v5i1.11989

Abstract

Color is vital in determining the quality of koi fish (Cyprinus carpio L.) and is even seen as an important component in selecting ornamental fish. Therefore, alternative feed sources are needed, which are highly nutritious and increase the brightness of fish. This study aimed to determine the effect of adding carrot flour (Daucus carota L.) and the concentration that had a good impact on increasing the color of Koi fish (Cyprinus carpio L.). This study used six treatments where treatment A was fed containing Spirulina as a control. Treatment B was the addition of carrot flour with a concentration of 5%, C with a concentration of 10%, D with a concentration of 15%, E with a concentration of 20%, and F with a concentration of 25%. The results showed that adding carrot flour affected the brightness of the color of the fish. The best color improvement is found in treatment F, with a value of 6.
Isolation of Flavonoids Compounds from Akalifa (Acalypha wilkesiana Muell. Arc.) Plant Leaves Simangunsong, Siska NA; Lenny, Sovia; Marpaung, Lamek
Journal of Chemical Natural Resources Vol. 5 No. 1 (2023): Journal of Chemical Natural Resources
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jcnar.v5i1.11990

Abstract

Flavonoid compounds from the leaves of Akalifa (Acalypha wilkesiana Muell. Arc.) have been extracted with maceration by methanol solvent, then added with ethyl acetate and partition extracted with n-hexane. 6% HCl acidifies the concentrated methanol extract, then partition extracted with chloroform. The concentrated chloroform extract was separated by column chromatography with silica gel 40 as the stationary phase and n-hexane: ethyl acetate 90:10; 80:20; 70:30; 60:40; 50:50 (v/v) as the mobile phase. The compounds were purified with TLC preparative yielding tawny paste weighing 4 mg with Rf= 0.42 with eluent n-hexane: ethyl acetate 60:40 (v/v). The identified analysis by using Ultraviolet-Visible (UV-Vis) spectroscopy, Fourier Transform Infra Red Spectroscopy (FT-IR), and Proton Nuclear Magnetic Resonance (1H-NMR) Spectroscopy was estimated as a flavonoid is an isoflavone.
Analysis of Fatty Acid Composition Using GC-MS and Antibacterial Activity Test of n-Hexane Extract from Jengkol Seeds (Pithecellobium lobatum Benth.) Marpaung, Lamek; Siahaan, Surya Graha P.
Journal of Chemical Natural Resources Vol. 5 No. 1 (2023): Journal of Chemical Natural Resources
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jcnar.v5i1.11991

Abstract

Analysis of fatty acid composition using GC-MS and antibacterial activity test of n-hexane extract from Jengkol seeds (Pithecellobium lobatum Benth) was performed with the maceration method to obtain n-hexane extract of Jengkol seeds. The n-hexane extract of Jengkol seeds was first esterified using methanol (1.7 ml): 98% H2SO4 (0.3 ml): Chloroform (2 ml), then analyzed its fatty acid composition by GC-MS method. The results of fatty acid composition analysis found in Jengkol seeds are saturated fatty acids, namely: Margaric Acid (1.10%), Palmitate Acid (2.64%), stearic acid (12.01%), and unsaturated fatty acids, namely: Linolelaidate acid (10.02%) %), and oleic acid (74.23%). The antibacterial activity test against Escherichia coli and Staphylococcus aureus using n-hexane extract of Jengkol seed was done by agar diffusion method. The concentration variations were 50 mg/ml, 150 mg/ml, and 250 mg/ml. From the results of this test, n-hexane Jengkol seeds have an antibacterial activity that can inhibit bacterial growth but is weak (≤14 mm).
Synthesis of Schiff's Base Between Dialdehid Alginate and Chitosan and Testing of Antibacterial Properties Kaban, Jamaran; Pasaribu, Seprinto
Journal of Chemical Natural Resources Vol. 5 No. 1 (2023): Journal of Chemical Natural Resources
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jcnar.v5i1.11992

Abstract

Schiff base synthesis has been carried out through a condensation reaction between dialdehyde alginate and chitosan. The first step is to oxidize Na-alginate using a sodium periodate (NaIO4) oxidizer, which produces alginate dialdehyde. The next step is FT-IR analysis, degree of oxidation, swelling ratio, and antibacterial properties. The FT-IR analysis results of alginate dialdehyde, which has been absorption peak at 1627.92 cm-1, show stretching group C=O and wave number 1026.13 cm-,1 stretching group COC (cyclic ether). The Schiff base has been absorption peak at 1635.64 cm-1, a stretching vibration group C=N. The degree of oxidation is 33%, and the swelling ratio is 50%. The testing of antibacterial which is conducted has been antimicrobials zone of Escherichia coli bacteria to Schiff base 0 mm and chitosan 0.225 mm; meanwhile, for Staphylococcus aureus bacteria antimicrobials zone which is Schiff base 1.916 mm and chitosan 0.333 mm. It can be concluded that Schiff base can inhibit the growth of Staphylococcus aureus bacteria than Escherichia coli bacteria were not inhibited.
Effect of Addition of Oleic Acid as a Template with Tetraethylorthosilicate (TEOS) as Source of Silica on Porosity Mesoporous Silica Material Andriayani; Telambanua, Claresta Ingrid; Nainggolan, Hamonangan
Journal of Chemical Natural Resources Vol. 5 No. 1 (2023): Journal of Chemical Natural Resources
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jcnar.v5i1.11993

Abstract

Mesoporous silica material has been synthesized using tetraethylorthosilicate (TEOS) as a source of silica, oleic acid as a template, and 3-aminopropyltrimethoxysilane (APMS) as co-structure directing agents (CSDA). The synthesis of silica material was made with a variation in the mole ratio of TEOS: Oleic acid with a ratio of 1: 0.2; 1: 0.3; 1: 0.5; 1: 0.6; 1: 0.7; 1: 0.9, and 1: 1. A mixture between TEOS and APMS was added to a mixture of oleic acid, HCl 0.1N and demineralized water then stirred at room temperature for 2 hours. Then aging, the mix at 80oC for 48 hours until solids are formed. Product separation was used in the centrifugation method. The resulting solid was dried at 50oC, and to remove the template, calcined at 550oC for 6 hours. The product of XRD analysis has a wider diffraction peak that indicates an amorphous material. The FT-IR spectrum shows the Si-OH and Si-O-Si groups which area characteristic of silica material. The product of SEM analysis offers the presence of sheets and plates of particle forms with different sizes. Adsorption desorption isotherm (BET) shows an isotherm type IV curve, and dominant pore sizes are 1.945 and 4.588 nm.

Page 9 of 14 | Total Record : 132

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