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EduChemia: Jurnal Kimia dan Pendidikan

EduChemia
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Published by Universitas Sultan Ageng Tirtayasa

ISSN : 25024778 EISSN : 25024787 DOI : http://dx.doi.org/10.30870/educhemia.v6i2.10412

Core Subject : Science, Education, Engineering,

Chemical Engineering, Chemistry & Bioengineering Chemistry Education Materials Science & Nanotechnology

Focus and Scope Educhemia (Jurnal Kimia dan Pendidikan) is Periodicals published the results of research related to the development of science and technology in the field of Chemistry and Chemistry education as a form of intellectual property Chemistry: Organic chemistry, Inorganic chemistry, Biochemistry, Physical chemistry, Analytical Chemistry, Environmental Chemistry, Material chemistry, Ethnochemistry. Chemistry education: chemistry learning design and model, chemical education curricula, Technology innovation and media/multimedia in chemistry learning, development of evaluation tools, lesson study and classroom action research

Arjuna Subject : Kimia(semua kategori) - Kimia Organik

Articles 11 Documents

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Search results for , issue "Vol 5, No 1 (2020)" : 11 Documents clear

Application of Dry Biomass of Aphanothece sp. as A Biosorbent of Copper Heavy Metal Fauzi Abdilah; Lina Troskialina
EduChemia (Jurnal Kimia dan Pendidikan) Vol 5, No 1 (2020)
Publisher : Department of Chemical Education Faculty of Teacher Training and Education Universitas Su

Various technologies have been developed to reduce heavy metal content in the wastewater. The biosorption method is a technique that is widely applied because it is cheap, environmentally friendly, and has high efficiency. This study aims to ascertain the potential of dry biomass of microalgae Aphanothece sp. as a biosorbent of Cu (II) ions in synthetic wastewater and determine the appropriate biosorption kinetics model. Analysis of Cu (II) ion concentrations was carried out using Atomic Absorption Spectrophotometer (AAS). The results showed that the optimum conditions for the biosorption process were at pH 4, and the contact time was 210 minutes with the removal efficiency of Cu (II) ions reaching 80.02%. The results of tests on the adsorption isotherm model showed that the biosorption process of Cu (II) ions using dry biomass biosorbent Aphanothece sp. follows the Freundlich isotherm model with an R2 value of 0.9962.

Front Matter Vol 5 No 1 (Cover, Editorial Board, Preface, Table of Contents) EduChemia EduChemia
EduChemia (Jurnal Kimia dan Pendidikan) Vol 5, No 1 (2020)
Publisher : Department of Chemical Education Faculty of Teacher Training and Education Universitas Su

Antibacterial Activity of Brown Macroalgae Lipid (Sargassum duplicatum) to The Methicillin Resistant Staphylococcus aureus (MRSA) And Shigella dysentriae Bacteria Riong Seulina Panjaitan; Ani Rombe Sarungngu’; Lika Lastri Sitorus
EduChemia (Jurnal Kimia dan Pendidikan) Vol 5, No 1 (2020)
Publisher : Department of Chemical Education Faculty of Teacher Training and Education Universitas Su

Methicillin Resistant Staphylococcus aureus (MRSA) is the main cause of nosocomial infections in burn patientsdue to the occurrence of antibiotic resistance. Dysentery or shigellosis is an infection that causes sores (ulcers) in the large intestine in the middle caused by the bacteria Shigella dysentriae. Some studies show that Sargassum duplicatum has antibacterial abilities. This study aimsto determine the antibacterial activity of Sargassum duplicatum seaweed lipid extract to the bacteria Methicillin Resistant Staphylococcus aureus (MRSA) and Shigella dysentriae bacteria. The method used in this study was the Folch method (using sochletation with a solvent ratio of chloroform:methanol (2:1)) to extract lipids from Sargassum duplicatum. Then using the paper disc diffusion method with positive control of tetracycline. From the extraction results obtained, the lipid levels of Sargassum duplicatum, where the chloroform phase was 0.493% (b / b) and the methanol phase was 2.40% (b / b). The results of the lipid antibacterial activity of Sargassum duplicatum at the pure concentration in the methanol phase with an average concentration of 7.07 mm on the Methicillin Resistant Staphylococcus aureus (MRSA) Bacteria while in the Shigella dysentriae bacteria obtained an average of 7.05 mm and the chloroform phase obtained an average diameter of 9.16 mm on Methicillin Resistant Staphylococcus aureus (MRSA) and in Shigella dysentriae Bacteria an average of 3.99 mm while tetracycline antibiotics amounted to 11.67 mm on Methicillin Resistant Staphylococcus aureus (MRSA) and 18.98 mm in Shigella dysentriae bacteria.

Development of Students Worksheet Chemical Bond Based On Learning Cycle 7E Utari Oktavianti; Asmadi M. Noer; Lenny Anwar S
EduChemia (Jurnal Kimia dan Pendidikan) Vol 5, No 1 (2020)
Publisher : Department of Chemical Education Faculty of Teacher Training and Education Universitas Su

This development research aims to produce worksheet chemical bonds based on Learning Cycle 7E, to know the validity level of the worksheet according to the validators, to know the practicality level of the worksheet according to the teacher, and to know the attractiveness level of the worksheet according to students. The development model follows the plomp model. Plomp consists of the preliminary investigation phase, the design phase, realization or construction phase, the test phase, evaluation and revision, and the implementation phase. Based on the results of product validation by three validators, the results obtained with the category valid from five aspects, namely the feasibility of the content, Learning Cycle 7E characteristics, language, presentation, and graphics with the percentage of 91.67%, 92.71%, 94.44%, 91.66%, and 88.89%. Teachers 'response as worksheet users based on the Learning Cycle 7E category is very practical with a percentage of 88.15%, and students' responses to worksheet based on the Learning Cycle 7E category are very interesting with a percentage of 89.99%.

Back Matter Vol 5 No 1 (Author Guidelines, Acknowledgment) EduChemia EduChemia
EduChemia (Jurnal Kimia dan Pendidikan) Vol 5, No 1 (2020)
Publisher : Department of Chemical Education Faculty of Teacher Training and Education Universitas Su

Analysis of Borax in Ground Red Chilies in the Traditional Markets of Jambi City Havizur Rahman; Mia Prajuwita; Dika Zamri Yanni; Putri Maya Sari; Intan Lestari
EduChemia (Jurnal Kimia dan Pendidikan) Vol 5, No 1 (2020)
Publisher : Department of Chemical Education Faculty of Teacher Training and Education Universitas Su

Preservatives are one of the food additives used to preserve perishable foods. Based on Peraturan Menteri Kesehatan RI No. 033 Tahun 2012 about food additives, sodium tetraborate or borax is classified in additives, which are prohibited being used in food. However in reality, there are still used. The purpose of this study is to identify and measure levels of borax compounds in ground red chilies that are sold in the traditional markets of Jambi city. Qualitative analysis of borax in ground red chilies using a color test method using Tumeric paper. While the quantitative analysis of borax in ground red chilies using UV-Vis Spectrophotometry at the wavelength of 550 nm. Borax identification results showed that 25 samples the ground red chilies tested contained borax with average concentration 1,998 mg/gram of borax compound. Analysis of the results of the test of borax content with SPSS using the Chi-square test indicated that there was no relationship between the selection of ground red chilies with the use of borax as a food preservative.

Isolation and Characterization of Pectin from Waste of “Raja Nangka” Banana Peels (Musa acuminata (AAA cv)) Mardiana Prasetyani Putri; Prima Agusti Lukis; Leny Putri Mawarni
EduChemia (Jurnal Kimia dan Pendidikan) Vol 5, No 1 (2020)
Publisher : Department of Chemical Education Faculty of Teacher Training and Education Universitas Su

Raja nangka banana peel contains pectin (10-21%), lignin (6-12%), and galacturonic acid. Pectin is a D-galacturonic acid polymer which connected with the β-1,4-glycosidic bond. Pectin was benefitted a gel form material and thickener making jam and low-calorie food. Pectin was generated with an isolation process. The purpose of this research was isolated and characterized pectin from raja nangka banana peel waste, and then pectin was obtained characterized for know pectin quality. Pectin isolation was done with the reflux extraction method. Pectin extraction uses chloric acid 1 N solvents. Pectin isolation was done at pH 1,5 temperature 90°C for 80 minutes. The purpose of testing for the function group was known as groups in pectin isolation. The functional group in pectin was got and then characterized with FTIR to show group vibration OH, CH3, C=O, C-H-, and R-O-R, with a wavelength respectively 3.448,366; 2.930,022; 1649,310; 1385,247 and 1146,453. Other than, pectin physical nature was done such as water content (0,061%), ash content (1,994%), equivalent weight (748,29%), methoxyl content (6,90%), galacturonic acid (250,88%) and esterification degree (0,0156%). Pectin characterization was got correct with pectin quality standard based on IPPA (International Pectin Producers Association).

The Quality of Selvo E-Modules as Learning Media on The Topic Of Voltaic Cells Ratna Sari Siti Aisyah; Imas Eva Wijayanti; Siti Aisyah
EduChemia (Jurnal Kimia dan Pendidikan) Vol 5, No 1 (2020)
Publisher : Department of Chemical Education Faculty of Teacher Training and Education Universitas Su

This research is a research and development (R&D) research that aims to find out the development procedures while producing products and the quality of the Selvo E-module application as a learning medium on the topic of voltaic cells. Research and development is carried out by adapting and modifying the Borg & Gall development model trough preliminary study and development stages with limited trials involving the validation of five media experts. Analysis of the data used during development is descriptive analysis and percentage techniques. The sample in this research were students of class XI MIPA Academic Year 2018/2019. The results showed that the development of chemistry e-module has “very good” qualifications for the material aspect with a percentage of 92% and media with a percentage of 97% according to experts. Based on the responses given by students as an assessment sample, the quality of the Selvo E-module application is included in the excellent category with a percentage of 85.24%.

Natural Dyes Characterization of Local Plants as Acid-Base Indicator Nelly Dayanti; Silpia Vilda Saputri; Arit Arit; Rini Muharini; Masriani Masriani
EduChemia (Jurnal Kimia dan Pendidikan) Vol 5, No 1 (2020)
Publisher : Department of Chemical Education Faculty of Teacher Training and Education Universitas Su

Hanjuang, mangosteen, putat, and tabelian plants are used by people of Lanjak deras Village as natural dyes for woven cloth and food so that they can be used as an alternative substitute synthesis indicators that are limited in a remote area. The purpose of the study is to determine the best type of solvent in extracting the samples, pH range, UV spectrum profiles, precision, and accuracy of the plant's extract as indicator. The sample was the plants that are used by the people of West Borneo as natural dyes, namely putat flower, tebelian stem, mangosteen leave, and hanjuang leave. Each sample was macerated with four types of solvents, namely aquadest, ethanol, methanol, and (1:1) ethanol:methanol, then the extract was testing by pH range. The extracts providing color changes were determined for its UV-Vis spectrum profile, stability, accuracy, and precision. The results showed that ethanol and methanol were suitable for extracting mangosteen leaves, methanol for putat flowers, ethanol for hanjuang leaves, and (1: 1) ethanol:methanol for tebelian stems. Mangosteen leaf extract, putat flower, and tebelian stem gave a pH range of 12-14, while hanjuang leaf extract did not change color. The phytochemical test results and UV spectrum profile of mangosteen leaf extract, putat flower, and tebelian stem indicated the presence of phenolic compounds. The powder and extract solution had high stability. Mangosteen leaf extract, putat flower, and tebelian stem had precision and accuracy with the medium category. These data indicated that mangosteen leaf extract, putat flower, and tebelian stem have potential as indicators of acid-base.

In-Silico Analysis of the BDNF (Brain Derived Neurotrophic Factor) Protein of Pigeon (Columba livia) Ni Gusti Ayu Galuh Candra Kirana; I Made Budiarsa; I Nengah Kundera; Mohammad Jamhari
EduChemia (Jurnal Kimia dan Pendidikan) Vol 5, No 1 (2020)
Publisher : Department of Chemical Education Faculty of Teacher Training and Education Universitas Su

BDNF protein plays a role in the growth and survival of neurons. BDNF protein has some uniqueness, and information on this protein is still limited reported, especially in pigeons. The purpose of this study is to predict the three-dimensional structure of the pigeon of BDNF protein, to provide information in understanding the characteristics, structure of the protein using a homology approach through in-silico analysis. The BDNF protein is predicted using the SWISS-MODEL server and visualizing the prediction results on the CHIMERA Software. Pigeon BDNF protein was taken from Uniprot with a B4Z8Q access codewith a template of 1b8m.1. The analysis shows that BDNF protein has an identity of 93,20% consisting of 226 amino acids with a target QMEAN value of -0.17 and hydrophobic amino acids namely Trp, His, Tyr, Ile, Leu, Gly, Lys, Cys, Ala, Phe, Met, and Val. Carboxyl residues, namely Glu, Asp and Val, and amine residues, namely Lys and Ser, with 82 hydrogen bonds.

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Editorial Address Department of Chemistry Education - Universitas Sultan Ageng Tirtayasa Address : Jl. Ciwaru Raya No. 25, Sempu, Kota Serang, Banten 42117, Indonesia

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Contact Name
Indah Langitasari

Contact Email
educhemia@untirta.ac.id

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Journal Mail Official
educhemia@untirta.ac.id

Editorial Address
Department of Chemistry Education - Universitas Sultan Ageng Tirtayasa Address : Jl. Ciwaru Raya No. 25, Sempu, Kota Serang, Banten 42117, Indonesia

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Kab. serang,

Banten

INDONESIA