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Muhammad Nur Alam
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Program Studi Kimia, Fakultas Sains Universitas Cokroaminoto Palopo Kampus 2, Jl. Lamaranginang Kota Palopo Sulawesi Selatan
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Cokroaminoto Journal of Chemical Science
Published by Universitas Cokroaminoto Palopo
ISSN : -     EISSN : 2723438X     DOI : -
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Energy Materials Science & Nanotechnology
The journal publishes two continuous issues annually, which means every accepted article in February - July will be published in Issue No. 1, and every accepted articles in August - Januar will be published in Issue No. 2. scope is organic chemistry, inorganic chemistry, analytical chemistry, physical chemistry, theoretical chemistry and applied chemistry
Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)
Articles 5 Documents
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Search results for , issue "Vol. 5 No. 1 (2023)" : 5 Documents clear
ANALISIS KADAR FLAVONOID TOTAL EKSTRAK RUMPUT KNOP (HYPTIS CAPITATA JACQ) DENGAN METODE SPEKTROFOTOMETRI UV-VIS SUKARTI; ILMIATI ILLING; FITRAH NURUL IMAN
Cokroaminoto Journal of Chemical Science Vol. 5 No. 1 (2023)
Publisher : Universitas Cokroaminoto Palopo

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Abstract

Tujuan dari penelitian ini adalah untuk menganalisis kadar total senyawa flavonoid dari ekstrak daun rumput knop (Hyptis capitata jacq). Daun rumput knop (Hyptis capitata jacq) adalah salah satu tumbuhan yang memiliki banyak khasiat yang dipercaya oleh masyarakat Suku Toraja di Desa Taripa Kabupaten Luwu Timur Provinsi Sulawesi Selatan sebagai obat demam, luka terbuka, sakit kepala, sakit perut maupun diabetes. Salah satu senyawa yang terkandung pada Hyptis capitata jacq adalah flavonoid. Senyawa flavonoid berfungsi sebagai antioksidan. Metode penelitian ini melalui preparasi sampel, ekstraksi sampel menggunakan etanol 96%, kemudian uji kadar menggunakan spektrofotometri UV-Vis dengan kuersetin sebagai larutan standar. Hasil penelitian kadar flavonoid diperoleh 35.09 mg/L atau setara dengan 0,003509%.
UJI AKTIVITAS ANTIOKSIDAN EKSTRAK ETANOL DAUN KEMBANG TELANG (Clitoria ternatea L.) DENGAN METODE FRAP Fidia Muh.Ilyas Fidia; Endah Dwijayanti; Hasyim Bariun
Cokroaminoto Journal of Chemical Science Vol. 5 No. 1 (2023)
Publisher : Universitas Cokroaminoto Palopo

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Abstract

This research is about Antioxidant Activity Test of Kembang Telang (Clitoria ternatea L.) Leaf Ethanol Extract with Ferric Reducing Antioxidant Power (FRAP) Method. The purpose of this study was to determine the value of the antioxidant activity of the ethanol extract of butterfly pea leaves (Clitoria ternatea L.) using the FRAP method. The research method included extraction by maceration using 96% ethanol solvent, followed by antioxidant analysis using a Visible spectrophotometer at a wavelength of 689 nm. The results of the antioxidant activity test of the ethanol extract of butterfly pea leaves (Clitoria ternatea L.) were obtained with an IC50 value of 20.786 ± 0.014 ppm and ascorbic acid with an IC50 value of 8.131 ± 0.094 ppm indicating that the ethanol extract of butterfly pea leaves (Clitoria ternatea L.) has antioxidant activity in the category very strong.
ANALISIS KUALITAS AIR SUNGAI DI KELURAHAN PAJALESANG KOTA PALOPO Putu Darmawan; Sukarti; Nururrahmah Hammado; Nurmalasari
Cokroaminoto Journal of Chemical Science Vol. 5 No. 1 (2023)
Publisher : Universitas Cokroaminoto Palopo

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Abstract

The river water which is passes through Pajalesang, Palopo City, through settlements and several industrial developments. Increasing population and development activities along river basins can lead to increased discharge of waste into water bodies. The river which is used as a place for waste disposal from the activities of the surrounding community can cause a decrease in water quality so that it does not meet the required quality standards for the use of clean water. This research aims to determine the quality of river water in Pajalesang, Palopo City. The research method was used several stages, namely sample preparation, data analysis using physical parameters (odor, taste and color, turbidity, total dissolved solids (TDS)), and data analysis using chemical parameters, namely pH, temperature, and iron (Fe) content. The results showed on the physical parameters of river water in Pajalesang, Palopo City, that it is odorless and when drunk it is tasteless and colorless, the resulting turbidity is 7.91 NTU, the total dissolved solids (TDS) are 70 mg/L and the temperature is 26.8ºC. It means that based on the physical parameters, the results exceeded the threshold standard requirements for clean water quality standards set by Minister of Health Regulation No. 32/2017. The chemical parameters in river water in Pajalesang, Palopo City showed that a pH value of 7.9 and a metal content of iron (Fe) of 0.1mg/L. The results also exceeded the threshold requirements for clean water quality standards based on chemical parameters.
ANALISIS KUALITAS AIR SUMUR UNTUK EKSTRAKSI PATI SAGU Nururrahmah Hammado; Nurmalasari; Laurensius Leong Liwu; Sukarti
Cokroaminoto Journal of Chemical Science Vol. 5 No. 1 (2023)
Publisher : Universitas Cokroaminoto Palopo

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Abstract

The main process in processing sago to obtain sago starch uses large amounts of water. One of the factors that determine the quality of sago starch is the water used for sago starch extraction because water is used to separate sago starch from sago fiber. The purpose of this study was to determine the quality of ground water used for sago starch extraction based on physical and chemical parameters. The physical parameters analyzed were the temperature, turbidity, odor, taste, and color of the ground water, while the chemical parameters analyzed were the concentrations of BOD, COD, Fe, and the pH of the ground water. Water samples were obtained from wells in Jaya Village, Telluwanua District, Palopo City. The preparation and testing of water quality were carried out at the Natural Materials Laboratory of the Faculty of Science, University of Cokroaminoto Palopo, and the Chemical Laboratory of the Makassar City Environmental Service. The results showed that the quality of ground water was based on physical parameters: temperature (26 oC), turbidity 7.54 NTU, ground water was odorless, tasteless, and colorless, while chemical parameters obtained BOD concentration of 2.2 mg/L; COD was 27.3 mg/L, and Fe metal was 4 mg/L. The results indicate that the ground water used for sago starch extraction is still within the threshold required for water quality (Class II). This research can be continued by adding tests for biological parameters, as well as several other parameters such as TDS, hardness, and several other hazardous metals so that the results of this study can be used as consideration for using the ground water as a source of water for sago starch extraction.
ANALISIS AIR ASAM TAMBANG UNTUK MENGURANGI KADAR SULFUR Marlia Mamede; Sennahati
Cokroaminoto Journal of Chemical Science Vol. 5 No. 1 (2023)
Publisher : Universitas Cokroaminoto Palopo

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Abstract

The development of coal resources has a negative impact on the environment. Open-pit mining activities and the mine's impact are very serious in terms of Acid Mine Water.This research is conducted to analyze the ability of water hyacinth plants in neutralizing acid mine water To reduce the pH of acid mine drainage and sulfate content, an experimental study was made.In this research, acid mine water comes from coal mining locations in Bone Regency and for water hyacinth plants comes from Borong District Makassar City. This research was conducted with 4 treatments by means of 1 Individual (10%), 3 Individuals (30%), 6 Individuals (60%) and 9 Individuals (90%) with 2 repetitions.The results showed that the water hyacinth plant was able to adsorb acid mine water. Initial results showed a pH of 3.1 after 14 days of treatment showed a pH of 6.5. For the results of sulfate analysis showed that the concentration of 30% had good results with a value of 114.83 mg / L at a surface area of ​​10% and 8.88 mg / L at a surface area of ​​30%, before being treated the Sulfate content value of 272 29 mg / L. From the results of the study showed that surface area and contact time had an effect on reducing sulfate levels and decreasing pH in acidic mine water.

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