Garuda - Garba Rujukan Digital

All

ALKIMIA : Jurnal Ilmu Kimia dan Terapan

alkimia
Website

Published by Universitas Islam Negeri Raden Fatah Palembang

ISSN : 25809873 EISSN : 25809881 DOI : -

Core Subject : Science, Social, Engineering,

Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Environmental Science Social Sciences

ALKIMIA : Journals of chemistry and applied science with number of E-ISSN: 2580-9881 and P-ISSN: 2580-9873 is a journal of chemistry that publishes research results related to the findings in the field of organic chemistry, inorganic, physical, analytical, biochemical and other as a problem solving in the field of environment, energy, and food. ALKIMIA is published twice a year in February and August, by chemistry science and technology faculty of UIN Raden Fatah Palembang. The editors are happy to invite researchers to publish their research results at Journal ALKIMIA.

Arjuna Subject : -

Articles 79 Documents

4 5 6 7 8

Synthesis of Fe3O4 Nanocatalyst Capped Citric Acid (Fe3O4-CA) from Sargassum filipendula Pratiwi, Dian
ALKIMIA Vol 5 No 2 (2021): ALKIMIA
Publisher : SCIENCE AND TECHNOLOGY FACULTY OF UNIVERSITAS ISLAM NEGERI RADEN FATAH PALEMBANG

The nanocatalyst Fe3O4 capped citric acid (Fe3O4-CA) was successfully synthesized using brown seaweed Sargassum filipendula. Sulfated polysaccharides contained in Sargassum filipendula extract contain sulfate, hydroxy, and aldehyde groups which cause Fe3+ reduction and nanoparticle stabilization. The FT-IR results of Sargassum filipendula extract showed the presence of CO-SO3 stretching vibrations at 1040 cm-1, sulfate groups at 1241 cm-1, aromatic CC at 1413 cm-1, carbonyl at 1604 cm-1, CH stretching vibrations at 2932 cm-1. 1, and the hydroxy group at 3316 cm-1\. Meanwhile, citric acid was used as capping to prevent agglomeration of the synthesized nanocatalyst. Fe3O4-CA nanocatalysts were characterized using XRD, PSA, and SEM-EDX. The XRD results were processed using the Debye-Scherrer equation and the crystal size of Fe3O4-CA was 8.5 nm. PSA results show that Fe3O4-CA particles have a radius of 45.09 nm or diameter of 90.18 nm. This nanocatalyst was also tested for the synthesis of pyrimidine-derived compounds at optimum conditions using 7.5% mol of catalyst, 50 °C for 6 hours, in order to obtain a yield of 83.2%.

Endophyte Extract From Nattle (Urtica dioica L.) Against Staphylococcus aureus and Escherichia coli Azim, Muhlisun; Novasari, Novasari; Hariadi, Puspawan; Febriani, Yuyun; Yuliana, Tri Puspita
ALKIMIA Vol 6 No 1 (2022): ALKIMIA
Publisher : SCIENCE AND TECHNOLOGY FACULTY OF UNIVERSITAS ISLAM NEGERI RADEN FATAH PALEMBANG

Endophytes are microorganisms that colonize the plant host tissue. Endophytic colonies are able to produce secondary metabolites in accordance with their host plants, endophytes have been found in every plant species studied to date and are recognized as a source of new natural compounds that have the potential to be exploited in medicine. This study aims to isolate and obtain endophytic fungi and to test secondary metabolites that have the potential as antibacterial against Staphylococcus aureus and Escherichia coli. Plant samples were taken around the village of Mamben, Wanasaba. The research method used is experimental laboratory. This research was conducted by isolating and identifying endophytic fungi from nettle stems. Obtained a type of endophytic fungal strain using Potato Dextrose Agar (PDA) media. The production of secondary metabolites of endophytic fungi was obtained by fermentation method using brown rice for a month then macerated for 3 days using methanol solvent and tested for secondary metabolites and antibacterial activity. The endophytic fungal extract of nettle stem contains alkaloids and flavonoids and is able to inhibit the growth of Staphylococcus aureus bacteria with the highest concentration of 60% with an inhibition zone of 18 mm. whereas, the extract of nettle stem endophytic fungus on Escherichia coli has not an inhibition zone.

Molecular Weight and Functional Group Analysis of Low Molecular Weight of Liquid Cyclic Natural Rubber Widiarti, Leni; Sajaratuddur, Sajaratuddur; Wirjosentono, Basuki; Eddyanto, Eddyanto
ALKIMIA Vol 6 No 1 (2022): ALKIMIA
Publisher : SCIENCE AND TECHNOLOGY FACULTY OF UNIVERSITAS ISLAM NEGERI RADEN FATAH PALEMBANG

The research about molecular weight and functional group analysis of low molecular weight liquid cyclic natural rubber has been done. The aim of this research is to achievement the quality of low molecular weight of liquid cyclic natural rubber. This research has been made in several steps such as preparation of the sample of rubber, the process of molecular degradation of cyclic rubber, and characterization of LCNR by using FTIR, GPC and viscosity test. Degradation is done with the help of the phenylhydrazine reagent with oxygen gas atmosphere with a flow rate of 2 LMin-1 for 24 hours. Molecular weight analysis by GPC had result the LCNR sample had a Mw is 60,556, a Mn is 6,661, and a PDI is 11,08613. The intrinsic viscosity can be used by relating it to the molecular weight by the Mark Houwink – Sakurada (MHS) equation and get the result 63.533 for LCNR molecular weight. The C-H stretching and bending region are two of the most difficult regions to interpret in infrared spectra. The ranges between 3300 to 2750 cm-1 is the C-H stretching region, is the more practical of the two regions. The frequency with which C-H bonds are obstructed is largely determined by the type of hybridization attributed to the bond. The stronger the vibrational force constant, the higher the vibration frequency.

Platinum and Cobalt hydroxide – modified Platinum Electrode as Sensor for Electrochemical Oxidation of Amoxicillin Herlina, Herlina; Zulfikar, Muhammad Ali; Sirumapea, Lasmaryna; Buchari, Buchari
ALKIMIA Vol 6 No 1 (2022): ALKIMIA
Publisher : SCIENCE AND TECHNOLOGY FACULTY OF UNIVERSITAS ISLAM NEGERI RADEN FATAH PALEMBANG

Antibiotics have recently gained in popularity due to their usage in medical treatment and the process of removing them from the environment. Amoxicillin is one of the antibiotics that constitutes the study's subject. On a Pt disc electrode and a cobalt hydroxide modified-Pt electrode, the scan rate and pH in the electrochemical oxidation of amoxicillin were investigated. The voltammetry measurement's current peak revealed that changing the electrode surface could increase the electrochemical response and sensitivity of the working electrodes. The Pt/Co(OH)2 modification working electrode had a high sensitivity in the electro-oxidation determination of amoxicillin, with a linear range of the sensor of 20 to 80 M and a limit of detection of 7.15 M for the Pt disc electrode and 3.64 M for the cobalt hydroxide modified Pt electrode. The findings of determination in real samples with electro-oxidation using a modified electrode were in good agreement with a confidence level of 95 percent, according to the comparing method with HPLC.

Skrining Bakteri Lipolitik Hasil Isolasi dari Tanah Terkontaminasi Minyak Khurniyati, Maylina Ilhami; Sumarsih, Sri; Chasanah, Uswatun
ALKIMIA Vol 6 No 1 (2022): ALKIMIA
Publisher : SCIENCE AND TECHNOLOGY FACULTY OF UNIVERSITAS ISLAM NEGERI RADEN FATAH PALEMBANG

Lipase (triasilglycerol acylhydrolase, E.C, 3.1.1.3) is an enzyme can hydrolyze long chains of triglycerides[1]. Lipase is a water-soluble enzyme and naturally lipase catalyze the hydrolysis of ester bonds in water insoluble lipid substrate and long-chain acylglycerol synthesis, diacylglycerol, monoacylglycerol, and glycerol[2]. Hydrolase enzyme lipase can be used potentialy produced fatty acid which precursors in the chemical industry[3]. The research aims to study the lipolytic activity of bacteria isolated from soil contaminated with oil. Screening of lipolytic bacteria was performed in Rhodamin-B agar plate containing olive oil. The lipolytic activity was determined by spectrofotometry method toward p-nitrofenil palmitat as a substrate. The result this research showed that there are 15 of 150 isolates bacteria from soil contaminated with oil was confirmed by observing the zone of hydrolysis formed around the growth of colony on Rhodamin B agar plate containing olive oil. One of the lipolytic bacteria identified as higher activity was produced lipase with activity of 7,41 U/ml

Magnetic-Hydrochar from Galam Bark Waste (Malaleuca cajuputi) as Sasirangan Waste Adsorbent Habibah, Hanna; Ridwan, Risaldi; Safitri, Desmalina; Sunardi, Sunardi
ALKIMIA Vol 6 No 1 (2022): ALKIMIA
Publisher : SCIENCE AND TECHNOLOGY FACULTY OF UNIVERSITAS ISLAM NEGERI RADEN FATAH PALEMBANG

Galam wood (Malaleuca cajuputi) is one of the woody plants that is able to grow well in the peat swamp environment of the South Kalimantan wetlands. Research on the synthesis and characterization of magnetic-hydrochar from galam bark waste for the treatment of sasirangan liquid waste has been carried out. This study aims to determine the characteristics of hydrochar and magnetic-hydrochar against the adsorption ability of sasirangan liquid waste. The results showed that the modification of galam bark into hydrochar and magnetic-hydrochar produced different characteristics based on the analysis of functional groups of infrared spectra. The surface morphology of hydrochar and magnetic-hydrochar also showed the significant differences based on scanning electron microscope (SEM) analysis. The resulting magnetic-hydrochar showed a higher adsorption ability to sasirangan waste than the hydrochar of galam bark and galam bark without modification.

Nanoencapsulation of Simpur (Dillenia indica L.) Leaf Extract For Antibacterial Robby Gus Mahardika; Shania Sakhila; Nurhadini Nurhadini
ALKIMIA Vol 6 No 2 (2022): ALKIMIA
Publisher : SCIENCE AND TECHNOLOGY FACULTY OF UNIVERSITAS ISLAM NEGERI RADEN FATAH PALEMBANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19109/alkimia.v6i2.13675

Simpur leaf (Dillenia indica L.) as a traditional medicinal plant spread in the Bangka Belitung Islands. Secondary metabolites contained in simpur leaf extract are alkaloids, flavonoids, phenols, tannins, saponins, steroids, and terpenoids. Compounds that provide pharmacological properties such as polyphenols are unstable to the influence of temperature and high light intensity so that they are easily oxidized. The challenge to protect the damage of these compounds can be done by means of nanoencapsulation. This study aims to determine the size and efficiency of the nanoencapsulation of simpur leaf extract and its antibacterial bioactivity against Staphylococcus aureus and Escherichia coli bacteria. Manufacture of nanoencapsulation using the nanoprecipitation method with the constituent components of PCL (1.5 g), Tween 80 (50 mL), simpur leaf extract (0.15 g; 0.25 g; 0.35 g). Antibacterial activity testing using disc diffusion method. Nanoencapsulated extract mass 0.15 g; 0.25 g; and 0.35 g have sizes of 167.2 nm, respectively; 208.7 nm; and 229.1 nm and encapsulation efficiency of 88.21%; 56.77%; and 5.34%. The antibacterial activity of the nanoencapsulation and extract was more effective in inhibiting the growth of Staphylococcus aureus bacteria than Escherichia coli bacteria. Strength of activity against Staphylococcus aureus bacteria in nanoencapsulated extracts was categorized as moderate to strong and Escherichia coli bacteria in extracts were categorized as moderate.

Quality Analysis of Probiotic Animal Food Products: A Test of Protein and Blood Fats Widia Widia; Faizah Alivia Putri; Tutinah Tutinah; Robby Gus Mahardika
ALKIMIA Vol 6 No 2 (2022): ALKIMIA
Publisher : SCIENCE AND TECHNOLOGY FACULTY OF UNIVERSITAS ISLAM NEGERI RADEN FATAH PALEMBANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19109/alkimia.v6i2.14391

Dissemination on Bangka Island will be carried out at the UBB Probio_FM Technology Product Downstream Partnership activity for the Institutionalization of Community Enterprises based on Organic Agriculture.The dissemination program on Bangka Island is aimed at increasing the number of technology users on Bangka Island. Animal food products are one of the agricultural commodities that have high economic value, especially on Bangka Belitung Island. Animal food products are a source of protein, examples of animal food products include fish, chicken and duck meat, eggs, and beef. Catfish, tilapia, duck and broiler and laying duck farming businesses will be carried out in the MF activities of the 2022 design shop, with the aim of producing healthy food products. The results of farming activities such as fresh catfish, tilapia, eggs, chicken meat and ducks, will be used as further research samples to analyze the content of protein, fat and cholesterol. The purpose of this study is to analyze the content of cholesterol, protein, and blood fats in duck eggs, chicken and duck meat, and probiotic fish. Produce probiotic food products with labels containing cholesterol, protein, and fat values. The timing of the implementation of this research began in October and ended in December 2022. The research was conducted at the FPPB UBB Basic Laboratory. The form of research is laboratory research, using a random design method using several samples as a comparison of treatments, preparing samples, testing cholesterol and fat protein content, collecting data and analyzing data. The protein content obtained was duck 31.34%, duck eggs 1.229%, probiotic catfish 42.37%, and non-probiotic catfish 34.8%. The fat content obtained was duck meat 33.79%, duck eggs 46.21%, probiotic catfish 21.46%, and non-probiotic catfish 21.359%. Keywords: Animal Food Products, Probio FM Technology, Protein Content, Fat Content.

Determination Of Exchangeability Cations (Ec), Texture And C-Organic Content In Mineral Soils and Peat Ahmad Gazali Aros Ai; Vera Lorensya Br. Sembiring; Astri Mutiara Dewi; Anggi Putri Rahayu; Rahmi Rahmi; Lenny Marlinda
ALKIMIA Vol 6 No 2 (2022): ALKIMIA
Publisher : SCIENCE AND TECHNOLOGY FACULTY OF UNIVERSITAS ISLAM NEGERI RADEN FATAH PALEMBANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19109/alkimia.v6i2.14509

EC or can be called exchangeable cation is a nutrient cation found in the soil. This is useful for indicating the degree of alkaline saturation, which indicates that the more saturated the soil base, the more fertile the soil will be. This study aims to obtain supporting information to obtain soil conditions that show the quality of the land as a growing medium. The method used for texture analysis on this soil refers to SNI 3423.03:1994 and C-Organic content analysis refers to SNI 4720.13:1998. The cation level test was carried out using NH4OAc solution with a Microwave Plasma Atomic Emission Spectroscopy (MP-AES) instrument. This instrument has a principle, namely atomic emission which is a form of energy produced by an atom when it returns to the ground state (Ground State) of the excited state (Excitation State). The results of this cation level test with analyte concentrations of K, Ca, Na and Mg with sample code SJ2022-01826 successively 0.65; 3,59; 0.82 and 0.94. The amount of cation content in fertile soil is worth at least 6 mg / L in accordance with the provisions of the Chemical Technical Manual.

Analisis Kadar Kafein, Abu, Air dan Sari Kopi Pada Sampel Kopi Bubuk Komersil M. Bintang Anugrah; Jhonatan Johan Parulian; Delviani Delviani; Nelson Nelson; Rahmi Rahmi
ALKIMIA Vol 6 No 2 (2022): ALKIMIA
Publisher : SCIENCE AND TECHNOLOGY FACULTY OF UNIVERSITAS ISLAM NEGERI RADEN FATAH PALEMBANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19109/alkimia.v6i2.14517

Caffeine is a secondary metabolite compound derived from the alkaloid group with its characteristic bitter taste. This study aims to analyze the water content, ash content, coffee extract and caffeine test using the High-Performance Liquid Chromatography (HPLC) method on ground coffee with six different types of ground coffee. The method used for ground coffee analysis refers to SNI 01-3542-2004. In the caffeine content test, the method used refers to SNI 2983:2014 concerning instant coffee. Caffeine was extracted from the sample with water at 90ºC in the presence of magnesium oxide after filtering, the caffeine content in the extract was determined using the HPLC method on the RP-18 column using isoratic elution with UV light detection at a wavelength of 272 nm. Caffeine levels in ground coffee are 1.71%, 2.43%, 0.23%, 2.10%, 2.58% and 6.02%. The maximum amount of caffeine content that is allowed for public consumption per day based on SNI is 0.9-2%.

Page 7 of 8 | Total Record : 79

4 5 6 7 8

Filter by Year

2017 2023

Filter By Issues

All Issue Vol 7 No 1 (2023): ALKIMIA Vol 6 No 2 (2022): ALKIMIA Vol 6 No 1 (2022): ALKIMIA Vol 5 No 2 (2021): ALKIMIA Vol 5 No 1 (2021): ALKIMIA Vol 4 No 2 (2020): ALKIMIA Vol 4 No 1 (2020): ALKIMIA Vol 3 No 2 (2019): ALKIMIA Vol 3 No 1 (2019): ALKIMIA Vol 2 No 2 (2018): ALKIMIA Vol 2 No 1 (2018): ALKIMIA Vol 1 No 1 (2017): ALKIMIA More Issue

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name
SITI RODIAH

Contact Email
siti.rodiah_uin@radenfatah.ac.id

Phone
-

Journal Mail Official
jurnal.alkimia@radenfatah.ac.id

Editorial Address
-

Location
Kota palembang,

Sumatera selatan

INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name SITI RODIAH

Contact Email siti.rodiah_uin@radenfatah.ac.id

Phone -

Journal Mail Official jurnal.alkimia@radenfatah.ac.id

Editorial Address -

Location Kota palembang, Sumatera selatan INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
SITI RODIAH

Contact Email
siti.rodiah_uin@radenfatah.ac.id

Phone
-

Journal Mail Official
jurnal.alkimia@radenfatah.ac.id

Editorial Address
-

Location
Kota palembang,

Sumatera selatan

INDONESIA