KOVALEN: Jurnal Riset Kimia最新文献

Molecular Docking Senyawa Aktif Ekstrak Daun Melinjo (Gnetum gnemon) dalam Penghambatan Enzim Histidin Dekarboksilase 抑制组氨酸脱羧酶的 Melinjo（Gnetum gnemon）叶提取物活性化合物的分子对接研究

KOVALEN: Jurnal Riset Kimia Pub Date : 2024-05-01 DOI: 10.22487/kovalen.2024.v10.i1.16603

Nelspon Gazpersz, Rahma El, Muhammad Daswar Ardian Baharudin, Zulaika Izmatul Hawa Bastio, Agnisia Indasari Ipaenin, M. R. Sohilait

{"title":"Molecular Docking Senyawa Aktif Ekstrak Daun Melinjo (Gnetum gnemon) dalam Penghambatan Enzim Histidin Dekarboksilase","authors":"Nelspon Gazpersz, Rahma El, Muhammad Daswar Ardian Baharudin, Zulaika Izmatul Hawa Bastio, Agnisia Indasari Ipaenin, M. R. Sohilait","doi":"10.22487/kovalen.2024.v10.i1.16603","DOIUrl":"https://doi.org/10.22487/kovalen.2024.v10.i1.16603","url":null,"abstract":"Histamine in fish is formed due to histidine decarboxylase which occurs due to decay by bacteria. In the Maluku community, melinjo leaves (Gnetum gnemon) are used as boiled water in processing rotten fish so that the decay process is inhibited. The compound content of melinjo leaves is tethered to the macromolecule decarboxylase PDB ID (4E1O). Test ligands, seven components of melinjo leaves were optimized using Gaussian. Ligands were bound to the receptor with AutoDock-Vina in grid box size and evaluated with Discovery Studio. The tethering results showed no ligand with affinity exceeding the standard ligand. However, three test ligands were close to the standard such as, dehydrovomifoliol affinity -6.7 kcal/mol, inhibition constant 1.2269 x 10-5. P-cumaric acid and gnetumal affinity -6.1 kcal/mol, inhibition constant 3.3778 x 10-5. Amino acid residue interactions showed hydrogen and hydrophobic bonding. The results of the binding affinity of the test ligand have not been able to be equivalent to the affinity of the standard ligand. However, the dehydrovomifoliol ligand is close to the affinity of the standard with a value of -6.7 kcal/mol and an RMSD of 2 Å. Thus, dehydrovomifoliol compounds from melinjo leaves show antihistamine effects as histidine decarboxylase inhibitors with promising potential.","PeriodicalId":17905,"journal":{"name":"KOVALEN: Jurnal Riset Kimia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141025940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Reduksi Kandungan Zat Aktif Anionik dalam Limbah Laundry dengan Memanfaatkan Kombinasi Zeolit dari Tongkol Jagung dan Pseudomonas aeruginosa 利用玉米芯沸石和铜绿假单胞菌的组合降低洗衣废弃物中的阴离子活性物质含量

KOVALEN: Jurnal Riset Kimia Pub Date : 2024-05-01 DOI: 10.22487/kovalen.2024.v10.i1.16982

Sirah Diniati Nea, Nurhaeni, D. Puspitasari, Prismawiryanti, Nov Irmawati Inda, N. Sumarni, Ruslan

{"title":"Reduksi Kandungan Zat Aktif Anionik dalam Limbah Laundry dengan Memanfaatkan Kombinasi Zeolit dari Tongkol Jagung dan Pseudomonas aeruginosa","authors":"Sirah Diniati Nea, Nurhaeni, D. Puspitasari, Prismawiryanti, Nov Irmawati Inda, N. Sumarni, Ruslan","doi":"10.22487/kovalen.2024.v10.i1.16982","DOIUrl":"https://doi.org/10.22487/kovalen.2024.v10.i1.16982","url":null,"abstract":"The increasing environmental pollution is one of the consequences of human activities that continue to expand. The environment has limitations in coping with pollutants generated by humans, such as waste from the laundry industry. This research aims to evaluate the combined effect of zeolite produced from corn cobs and the use of microorganisms capable of degrading anionic surfactants, with the goal of reducing the concentration of anionic surfactants in laundry wastewater. The methods used include adsorption using corn cobs as adsorbents and biodegradation using surfactant-degrading bacteria. Morphological observations using Scanning Electron Microscope (SEM) indicate that the produced zeolite has a crystal structure that stacks up like clumps of cubes. X-ray Diffraction (XRD) analysis shows that zeolite synthesized with a silica extraction ratio from corn cobs and sodium aluminate of 20:20 mL has been successfully conducted. The biodegradation process of anionic surfactants in laundry wastewater using a combination of synthesized zeolite and Pseudomonas aeruginosa bacteria employing the Methylene Blue Alkyl Substance (MBAS) method has shown a decrease in concentration to 1.66 mg/L and degradation of 33.55%, especially in sample 3 with variations of 7.5 grams of corn cob zeolite and 15% microorganisms, during a 5-day experiment.","PeriodicalId":17905,"journal":{"name":"KOVALEN: Jurnal Riset Kimia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141038383","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Selektivitas Adsorpsi Campuran Biner Fe(II)/Cu(II) Menggunakan Karbon Aktif dari Sekam Padi dan Serbuk Gergaji Kayu Jati 使用稻壳和柚木锯屑制成的活性炭对铁（II）/铜（II）二元混合物的吸附选择性

KOVALEN: Jurnal Riset Kimia Pub Date : 2024-05-01 DOI: 10.22487/kovalen.2024.v10.i1.17060

Cucun Alep Riyanto, Jose D Michael Yonggulemba, Delvi Anandhia Stefani, Tirza Widyamurti Brotosudarmo, Diki Anggaran, Yehez Kiel Sandy Pradana, Yohanes Ariesto, Fidelis Tertius Aluh Christyawardana, Iga Permata Sari, Nicho Vernanda Wina Puspita, Lutiyono Lutiyono

{"title":"Selektivitas Adsorpsi Campuran Biner Fe(II)/Cu(II) Menggunakan Karbon Aktif dari Sekam Padi dan Serbuk Gergaji Kayu Jati","authors":"Cucun Alep Riyanto, Jose D Michael Yonggulemba, Delvi Anandhia Stefani, Tirza Widyamurti Brotosudarmo, Diki Anggaran, Yehez Kiel Sandy Pradana, Yohanes Ariesto, Fidelis Tertius Aluh Christyawardana, Iga Permata Sari, Nicho Vernanda Wina Puspita, Lutiyono Lutiyono","doi":"10.22487/kovalen.2024.v10.i1.17060","DOIUrl":"https://doi.org/10.22487/kovalen.2024.v10.i1.17060","url":null,"abstract":"Increasing human needs cause an increase in production on an industrial scale and can have an impact on increasing contamination of the aquatic environment. Efforts to improve water quality can be made by removing contaminants using renewable activated carbon originating from agricultural waste such as rice husks and teak sawdust. This research aims to examine the adsorption capacity of activated carbon from rice husks (RHAC) and teak sawdust (TSAC) on a binary mixture of Fe(II)/Cu(II) as well as the level of selectivity of each adsorbent on Fe(II) and Cu(II) ions. RHAC and TSAC activated carbon are produced through carbonization processes (T=400 °C, t=60 minutes), reflux (NaOH 2N, T=100 °C, t=120 minutes), chemical activation using H3PO4 (30%, 1:3, b/b) and physics (furnace). The results of this research are that RHAC and TSAC activated carbon have the functional groups O-H (str), C-H (str), C≡C, C=C, C-O (str), and C-O-P (str). The surface character of RHAC and TSAC activated carbon is dominated by the elements C, O, and P. The results of the Fe(II) and Cu(II) ion adsorption treatment using RHAC and TSAC activated carbon follow PSO kinetic modeling with R2 values of 0.9221 and 0.9565 on RHAC and 0.9915 and 0.97 on TSAC. TSAC-activated carbon more selectively adsorbs Fe(II) and Cu(II) ions compared to RHAC-activated carbon with adsorption percentages reaching 97.34% and 87.82%, respectively.","PeriodicalId":17905,"journal":{"name":"KOVALEN: Jurnal Riset Kimia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141033940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Kinerja Analitik Mikrokapsul Magnetit - Alginat (MNPs-ALG) untuk Analisis Ion Logam Cu(II) dan Aplikasinya pada Sampel Alam 磁铁矿-藻酸盐微胶囊（MNPs-ALG）分析铜（II）金属离子的性能及其在天然样品中的应用

KOVALEN: Jurnal Riset Kimia Pub Date : 2024-05-01 DOI: 10.22487/kovalen.2024.v10.i1.16574

Ika Yekti Lianasari, Aman Sentosa Panggabean, Bohari Yusuf, Alimuddin, Soerja Koesnarpadi

{"title":"Kinerja Analitik Mikrokapsul Magnetit - Alginat (MNPs-ALG) untuk Analisis Ion Logam Cu(II) dan Aplikasinya pada Sampel Alam","authors":"Ika Yekti Lianasari, Aman Sentosa Panggabean, Bohari Yusuf, Alimuddin, Soerja Koesnarpadi","doi":"10.22487/kovalen.2024.v10.i1.16574","DOIUrl":"https://doi.org/10.22487/kovalen.2024.v10.i1.16574","url":null,"abstract":"Research has been carried out regarding the synthesis of Magnetite-Alginate microcapsules (MNPs-ALG) and applied to Cu (II) metal ions. The nature of magnetic nanoparticles, Fe3O4 which easily form aggregations can be overcome by this encapsulation process, but a very efficient separation process is also very much needed in the analytical separation process.The process of making magnetite nanoparticle compounds is carried out first using FeCl2.4H2O and FeCl3.6H2O and adding concentrated ammonia at a temperature of 90οC until the solution becomes blackish in color. The dry magnetite, Fe3O4, nanoparticles were then dissolved in distilled water and thickened with Na-Alginate then dropped slowly into a 1 M CaCl2 solution. The results of characterization using SEM showed that there were differences in morphology before and after contact, and there was 0.98% mass of Cu elements on the EDS results.The microcapsule adsorption optimization test gave results for the best adsorption percentage >90% on a mass variation of magnetite (MNPs) of 0.3 grams; pH 5; contact time of 30 minutes and retention capacity of 185.95 mg/gram, at a Cu(II) concentration of 800 ppm. Analytical performance shows the best results with linearity parameters with a correlation coefficient of 0.999; the detection limit and quantitation limit are 0.0516 ppb and 0.1720 ppb with a lifetime of four times. The application of samples in the form of river water samples shows a percent recovery value of around >90%, indicating that there is no matrix that significantly influences the measurements.","PeriodicalId":17905,"journal":{"name":"KOVALEN: Jurnal Riset Kimia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141039199","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sintesis dan Karakterisasi Polivinil Alkohol (PVA) Terlapis Polieugenol 聚乙烯醇 (PVA) 涂层聚丁香酚的合成与表征

KOVALEN: Jurnal Riset Kimia Pub Date : 2024-05-01 DOI: 10.22487/kovalen.2024.v10.i1.17088

Erwin Abdul Rahim, Ahmad Ridhay, Sitti Nur Halizah, Indriani, Husain Sosidi, Khairuddin, N. I. Inda, Nurakhirawati, Moh. Mirzan, Aini Auliana Amar

引用次数: 0

Uji Cemaran Logam Mangan (Mn), Tembaga (Cu), dan Mikroba pada Air Minum dalam Kemasan 检测包装饮用水中的锰（Mn）、铜（Cu）和微生物金属污染物

KOVALEN: Jurnal Riset Kimia Pub Date : 2024-05-01 DOI: 10.22487/kovalen.2024.v10.i1.16642

Tita Rosita, Inne Sadiyah

{"title":"Uji Cemaran Logam Mangan (Mn), Tembaga (Cu), dan Mikroba pada Air Minum dalam Kemasan","authors":"Tita Rosita, Inne Sadiyah","doi":"10.22487/kovalen.2024.v10.i1.16642","DOIUrl":"https://doi.org/10.22487/kovalen.2024.v10.i1.16642","url":null,"abstract":"The presence of metal contaminants such as Manganese (Mn) and Copper (Cu) and microbial contaminants in bottled drinking water (AMDK) that are potentially harmful to human health must be maintained so as not to exceed the set limits. The standard method of testing for Mn and Cu metal contamination in bottled water involves the use of Inductively Coupled Plasma-Optical Emission Spectrometry (ICP-OES) which refers to SNI 3554:2015. Microbial contamination testing in bottled water was carried out by measuring several parameters such as total plate count (ALT), Coliform test, E.coli test and Pseudomonas aeruginosa test with methods referring to SNI 3554:2015. The test results show that the level of Mn metal in AMDK is 0.001 mg/L with a very low relative variation (%RSD 0.00%), and the level of Cu metal is 0.004 mg/L with the same low relative variation (%RSD 0.00%). In addition, the microbial contamination test results for total plate counts were <1 CFU/mL, and the average test results for E.coli, Coliform, and P.aeruginosa bacteria were 0 colonies/250 mL samples. These results illustrate that the levels of Mn and Cu metal contamination and microbial contamination found in AMDK do not exceed the limits set in SNI 3553: 2015. Based on the tests conducted, bottled drinking water is proven safe from Mn and Cu metal contamination and microbial contamination.","PeriodicalId":17905,"journal":{"name":"KOVALEN: Jurnal Riset Kimia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141030494","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tofu Liquid Waste Treatment Using Effective Volume of Anaerobic Sequencing Batch Reactor (ASBR) 利用厌氧序批式反应器（ASBR）的有效容积处理豆腐液废物

KOVALEN: Jurnal Riset Kimia Pub Date : 2024-05-01 DOI: 10.22487/kovalen.2024.v10.i1.16478

Herawati Budiastuti, Anissa Nurul Rachmawati, Delliana Agustin, Tifa Paramitha, Rusdianasari

{"title":"Tofu Liquid Waste Treatment Using Effective Volume of Anaerobic Sequencing Batch Reactor (ASBR)","authors":"Herawati Budiastuti, Anissa Nurul Rachmawati, Delliana Agustin, Tifa Paramitha, Rusdianasari","doi":"10.22487/kovalen.2024.v10.i1.16478","DOIUrl":"https://doi.org/10.22487/kovalen.2024.v10.i1.16478","url":null,"abstract":"The tofu industry produces liquid waste containing high organic compounds. Organic compounds in liquid waste can threaten aquatic ecosystems if discharged directly into water bodies. One of the most effective wastewater treatment systems is the treatment using Anaerobic Sequencing Batch Reactor (ASBR). Besides being able to reduce the content of organic compounds, ASBR can produce biogas, and its decomposing microorganisms do not flow into the effluent stream. The purpose of this study was to evaluate the performance of ASBR at an effective reactor volume according to the design. This is because the use of ASBR in previous studies had not reached the operational stage and did not use an effective volume reactor. The stages of waste treatment using ASBR include the seeding, acclimatization, and operation stages. Waste treatment took place at room temperature in the reactor with an effective volume of 6 L. The operating parameters tested were MLVSS, COD, BOD, pH, and cumulative biogas volume. The results obtained show that the seeding process took 56 days, acclimatization took 10 days, and the operation lasted for 17 days. The efficiency of reducing COD concentration was 60%, the efficiency of reducing BOD concentration was 35.65%, and the cumulative volume of biogas produced was 24,120 mL at the operating stage. The use of the ASBR system at an effective volume of 6 L resulted in the successful processing of tofu liquid waste.","PeriodicalId":17905,"journal":{"name":"KOVALEN: Jurnal Riset Kimia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141039835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluasi dan Modifikasi Alat Penukar Ion dengan Penambahan Kolom Adsorpsi Karbon Aktif untuk Menurunkan Kesadahan 添加活性炭吸附柱以降低硬度的离子交换装置的评估和改造

KOVALEN: Jurnal Riset Kimia Pub Date : 2024-05-01 DOI: 10.22487/kovalen.2024.v10.i1.16556

Endang Kusumawati, Retno Dwi Jayanti, Lestari Herlianti Putri, Nurul Annisa, Tifa Paramitha

{"title":"Evaluasi dan Modifikasi Alat Penukar Ion dengan Penambahan Kolom Adsorpsi Karbon Aktif untuk Menurunkan Kesadahan","authors":"Endang Kusumawati, Retno Dwi Jayanti, Lestari Herlianti Putri, Nurul Annisa, Tifa Paramitha","doi":"10.22487/kovalen.2024.v10.i1.16556","DOIUrl":"https://doi.org/10.22487/kovalen.2024.v10.i1.16556","url":null,"abstract":"Ion exchange is one of the water treatment methods used to reduce hardness. To improve the performance of the ion exchange columns, modification can be done by adding an activated carbon column placed after the ion exchange column to adsorb ions that were not exchanged by the resin so that the treated water met boiler feed water quality standards. The purposes of this study were to determine the best flow rate to reduce hardness in the configuration of the ion exchange and activated carbon columns, determine the saturation time of each column, and determine their exchange/adsorption capacities. The steps of this study included modifications and repair of equipment, leak tests, and configuration system performance tests. Performance tests were conducted by varying the feed flow rates by 0.2; 0.4; 0.6; 0.8; 1 GPM and analyzed the efficiency of hardness reduction. The results of this study showed that the best flow rate to reduce the initial hardness of 499 mg/ L CaCO3 was a flow rate of 0.6 GPM or 2.2 LPM. The efficiency of hardness reduction in the configuration system was 100%. The conductivity of the effluent of anion column and activated carbon column decreased compared to the conductivity of the effluent of cation column with an average decrease of 33.17% in the anion column and 18.35% in the activated carbon column. The saturation time of the configuration system was 168 minutes in cation resin, 46.4 minutes in anion resin, and 159 minutes in activated carbon. Furthermore, the adsorption capacity of cation resin, anion resin, and activated carbon were 35.28 mg/g, 43.98 mg/g, and 9.61 mg/g, respectively. The addition of activated carbon in the configuration system lowers the conductivity of the effluent and decreases hardness. ","PeriodicalId":17905,"journal":{"name":"KOVALEN: Jurnal Riset Kimia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141044836","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pemanfaatan Karbon Aktif Kulit Kacang Tanah untuk Menurunkan Kadar Ion logam Ca2+ dan Mg2+ dalam Air 活化碳外壳用于降低水中的铁钙+和Mg2+的离子水平

KOVALEN: Jurnal Riset Kimia Pub Date : 2023-08-31 DOI: 10.22487/kovalen.2023.v9.i2.16397

Wilda Yanti, Husain Sosidi, Indriani, Prismawiryanti, D. Puspitasari, Moh. Mirzan, Erwin Abdul Rahim, Nov Irmawati Inda

{"title":"Pemanfaatan Karbon Aktif Kulit Kacang Tanah untuk Menurunkan Kadar Ion logam Ca2+ dan Mg2+ dalam Air","authors":"Wilda Yanti, Husain Sosidi, Indriani, Prismawiryanti, D. Puspitasari, Moh. Mirzan, Erwin Abdul Rahim, Nov Irmawati Inda","doi":"10.22487/kovalen.2023.v9.i2.16397","DOIUrl":"https://doi.org/10.22487/kovalen.2023.v9.i2.16397","url":null,"abstract":"Peanut shell has a high cellulose content as a carbon source which can be used as a basic ingredient for making activated charcoal. Research on peanut shells used as activated charcoal aims to determine the effect of contact time and pH on reducing levels of metal ions Ca2+ and Mg2+ in water. The research was conducted using contact time variables (30, 60, 90, 120, and 150 minutes) and pH (4, 5, 6, 7, and 8). Measurement of adsorbed metal levels was determined by using an Atomic Absorption Spectrophotometer (AAS). The research results obtained showed that variations in contact time could reduce Ca2+ levels by 77.46% -84.89% and Mg2+ by 86.88%-88.91%. Adsorbents with variations in pH can reduce Ca2+ levels by 63.48%-88.74% and Mg2+ by 90.35%-94.49%. The best conditions for the absorption of Ca2+ and Mg2+ ions were a contact time of 60 minutes and pH 4. The adsorbent was applied to reduce Ca2+ and Mg2+ levels in water with different hardness levels. The results of the analysis of water samples from two different locations had Ca2+ levels of 94.180 mg/L and 210.20 mg/L, while Mg2+ levels were 13.536 mg/L and 17.420 mg/L. The percentages of Ca2+ adsorption for the two samples were 96.19% and 77.08%, and the percentages of Mg2+ adsorption for the two samples were 21.16% and 10.63%. Carbon from peanut shells activated with sodium acetate has the potential to be used to reduce hardness in water.","PeriodicalId":17905,"journal":{"name":"KOVALEN: Jurnal Riset Kimia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90042770","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Formulasi Losion Ekstrak Kopi Robusta (Coffea canephora) sebagai Penangkal Radikal Bebas

KOVALEN: Jurnal Riset Kimia Pub Date : 2023-08-31 DOI: 10.22487/kovalen.2023.v9.i2.16333

Farid Mulana, Syaubari, S. Afifah, Indah Tri Lestari

{"title":"Formulasi Losion Ekstrak Kopi Robusta (Coffea canephora) sebagai Penangkal Radikal Bebas","authors":"Farid Mulana, Syaubari, S. Afifah, Indah Tri Lestari","doi":"10.22487/kovalen.2023.v9.i2.16333","DOIUrl":"https://doi.org/10.22487/kovalen.2023.v9.i2.16333","url":null,"abstract":"Hand body lotion is a cosmetic used to moisturize skin in order to reduce dehydration. The coffee extract contains bioactive compounds that can provide high antioxidant activation. The purpose of this research is to study the effect of concentration on coffee extract and the addition of olive oil on organoleptic, hedonic, pH, and dispersive properties and to determine the value of the Sun Protection Factor (SPF) in the lotion. The research method involved extracting coffee grounds, heating the oil and water phases to 65°C, and mixing the two phases till it becomes an emulsion. Then add the oil and water to the mixture. The lotion that’s already in the container is ready for testing. This research used 8 formulas with coffee extract concentrations of 2% and 4%, and variations of olive oil from 0, 1, 2, and 3%. Organoleptic and hedonic tests were tried out on 25 respondents for 2 weeks. The pH test was carried out using a universal indicator. The spreadability test was carried out using a petri dish and the SPF test using a UV-visible spectrophotometer. The results showed that 25 respondents preferred formula 4 over the rest, which was white in color, thick in texture, soft scent and the aftertaste was moisturizing. All formulas have good spreading ability and all in the pH range of 5 – 8. The SPF test results were obtained for each formulation in the range of 6.78 – 12.95 and the highest SPF value was owned by F8 of 12.95.","PeriodicalId":17905,"journal":{"name":"KOVALEN: Jurnal Riset Kimia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84871407","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0