cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
-
Contact Email
-
Phone
-
Journal Mail Official
-
Editorial Address
-
Location
Kota surakarta,
Jawa tengah
INDONESIA
JKPK (Jurnal Kimia dan Pendidikan Kimia)
Published by Universitas Sebelas Maret
ISSN : 25034146     EISSN : 25034154     DOI : -
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Chemistry
The JKPK (Jurnal Kimia dan Pendidikan Kimia) is a national journal, published three times a year in April, August, and December, containing research articles on Chemistry and Chemistry education.
Arjuna Subject : -
Articles 255 Documents
 15   16   17   18   19 
Biofilm Chitosan as Modern Dressing for Ulcers Romanna Cintya Madeleine Simanjuntak; Wisye Riyoly; Fiane de Fretes; Agung Rimayanto Gintu
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 6, No 3 (2021): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jkpk.v6i3.50263

Abstract

Modern dressing techniques as open wound dressings are still effective and suitable for use, especially for people with open wounds such as ulcers, but they still have disadvantages, such as the high prices and need for other antibiotics to prevent inflammation. Previous studies reported an increase in the number of antibiotic resistance, which sparked the idea of producing new dressing materials that have strong antimicrobial and biocompatible properties. The material suitable for the idea of a wound dressing is chitosan biofilm because it has strong antibacterial properties and has a similar structure to the skin tissue. This study aims to produce chitosan biofilm using the deacetylation method using a strong base. The physicochemical characterization results of biofilms showed a deacetylation degree of 87.13 with a voltage of 1.15 ± 0.00 and a polycationic group of biofilms that appeared at a wavenumber of 2.1714 ± 0.0000 nm. From the measurement of the antibacterial power of chitosan biofilm against skin surface bacteria, the inhibition zone diameter was 18.93 ± 0.12; 19.50 ± 0.17; 20.20 ± 0.23; 20.13 ± 0.03 and 22.53 ± 0.09 against S. aureus, S. epidermidis, P. aeruginosa, E. colli, Bacillus sp. Overall, it can be concluded that biofilm chitosan has the opportunity to be applied as a dressing in wound care.
Antipyretic Activity of Ethanol Fraction of Pandan Laut Leaves (Pandanus odorifer) against Male Mice (Mus musculus) Induced by DPT-HB Vaccine Nurhamidah Nurhamidah; Elvinawati Elvinawati; Dewi Handayani; Sura Menda Ginting; Nursela Wahyuni
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 7, No 1 (2022): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jkpk.v7i1.56521

Abstract

Fever is a condition where the body temperature exceeds 37 °C caused by disease or inflammation resulting from a viral or bacterial infection. People consume synthetic drugs or commonly called antipyretics, to treat fever. This study aims to determine the antipyretic activity of the Ethanol fraction of sea Pandanus leaves (Pandanus odorifer) against male mice (mus musculus) induced by the DPT-HB vaccine. Sample extraction was done by the maceration method with various solvent polarities (non-polar; n-Hexane, semi-polar; Ethyl Acetate, polar; Ethanol). All three fractions were tested for their secondary metabolites of Flavonoids with antipyretic activity. In addition, an antipyretic activity test was carried out on male mice induced by the DPT-HB vaccine-induced by an intramuscular method in the lower abdomen. An infrared thermometer (ANENG AN201) measured the mice's body temperatures every 30 minutes for 180 minutes after induction. Phytochemical identification results show that the n-Hexane fraction contains Tannins and Steroids as secondary metabolites. The Ethyl Acetate fraction contains Tannins, Triterpenes, Steroids, and the Ethanol fraction contains Tannins, Triterpenes, Steroids, Saponins, and Flavonoids. The antipyretic activity test results show that the Ethanol fraction of sea Pandanus leaves (Pandanus odorifer) has the potential to be antipyretic against mice (Mus musculus), and the most effective antipyretic effect was found in infraction with a dose of 600 mg/kg body weight.
Measurement of Ambient Ozone Concentration using Passive Sampler Dyah Aries Tanti; Asri Indrawati
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 7, No 1 (2022): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jkpk.v7i1.55431

Abstract

Measurement of ozone concentration in ambient air was carried out using the passive sampling method in Cipedes, Bandung, from 2012 – 2020. Sample analysis was done using ICS 1500 Dionex ion chromatography. The results showed a fluctuating concentration from 2012 -2020 with the highest average value in 2015 of 29.94 g/m³. The monthly pattern shows the highest ozone concentration in September and the lowest in December; this condition was related to the intensity of rainfall that can clean ozone in the atmosphere. The seasonal pattern showed in the dry season ozone concentration is relatively higher than in the rainy season. A comparison of passive and continuous sampling was made to see the performance of the passive sampler showing a similar pattern with a correlation coefficient of r = 0.48. This difference in value was related to the absorption of ozone gas in the passive sampler absorbing filter and the meteorological factors.
INFLUENCE OF TIME AND CONCENTRATION ON TEXTURAL PROPERTIES OF MESOPOROUS CARBONS OF GELATIN PREPARED BY HARD-TEMPLATING PROCESS Maria Ulfa; Wega Trisunaryanti; Iip Izul Falah; Indriana Kartini
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 1, No 1 (2016): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jkpk.v1i1.10126

Abstract

 Mesoporous carbons with different textural properties were prepared with gelatin by hard templating process. The effect silica removal condition (time and acid concentration) on the nanocomposite properties was studied during synthesis process. 1, 6, and 24 h silica removal times and 10%, 20%, 30% and 40% HF concentraton were chosen. Textural properties and microstructure of the nanocomposites were characterized by X-ray diffraction (XRD), Transmission Electron Microscopy (TEM), Energy Dispersive X-ray Spectroscopy (EDAX), and N2 adsorption– desorption. Results showed that removal silica time process led to mesoporous nucleation and growth on the surface of mesoporous carbon. At decreasing of removal silica time and HF concentration the surface area and total pore volume increased from 410 to 760 m2/g and 0.14–0.99 cm3/g with almost same of the average pore diameter considerably at 4.1 nm. Furthermore, it was observed more homogeneous pore distribution with decreasing the silica removal time dan HF consentration. In conclusion, the silica removal time and acid concentration play an important role on textural properties of mesoporous carbon which could have a major effect on adsorption properties of sulfuric compound in the fuel.
The Synthesis and Physicochemical Characterization of Hydroxyapatite (HAp) from Local Duck Egg Shells Agung Rimayanto Gintu; Elizabeth Betty Elok Kristiani; Yohanes Martono
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 7, No 1 (2022): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jkpk.v7i1.55429

Abstract

Hydroxyapatite (HAp) Biocheramics was the main component of remineralisation agent to the hard tissues; it is commonly synthesized from compounds rich with calcium. One of the compounds recommended as a HAp source was eggshells. This study aimed to synthesize the HAp from local duck eggshells containing Calcium 0,8631 ± 0,0015g/g and Phosphor 0,3118 ± 0,0016g/g. The synthesis process of HAp by Base Precipitation methods showed rendement 85,06 ± 1,0135%. The Physicochemical characterization to the HAp showed the Calcium contains 0,4760 ± 0,0027g/g; Phosphor 0,0897 ± 0,0023g/g; Porosity 82,0106 ± 0,4484%; Biodegradability 5,3506 ± 0,0295%; and Swelling ability 5,7678 ± 0,1897%. The results concluded that the local duck egg shells were recommended as HAp sources. Based on characterisation results, the HAp made from it was potentially applied as a remineralization agent.
Esterification of Cinnamic Acid using Menthol and its Activity as Lowering Glucose Levels using Anthrone Sulfate yuliana purwaningsih; Mighfar Syukur; Wulandari Wulandari
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 7, No 1 (2022): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jkpk.v7i1.55532

Abstract

This study aimed to synthesize menthyl cinnamate and its activity as a glucose-lowering agent. Synthesis of methyl cinnamate using Fischer esterification of cinnamic acid and menthol with sulfuric acid as a catalyst using reflux at a temperature of 60oC with a synthesis time variation of 4,5 and 6 hours. Identification of synthesis results using FTIR spectrophotometry and GC-MS. Glucose lowering activity of the synthesis product using anthrone sulfate. The synthesized compound was a yellow oil liquid with a sweet fruity aroma typical of cinnamic esters with a yield % of 95.83%, 96.38, and 91.79%, respectively, at 4, 5, and 6 hours. The synthesized product was soluble in nonpolar solvents. Analysis by FTIR showed several functional groups such as C=O, C=C, C-O, and C-H aliphatic. Analysis of the synthesis results with GC-MS showed a retention time of 18.38 minutes for menthyl cinnamate with m/z = 286. Test with anthrone sulfate gave an optimum concentration of 300 ppm with a % decrease in the glucose of 48.62%. Based on these results, it can be concluded that menthyl cinnamate can be synthesized with optimum yield in 5 hours and has potential as an antidiabetic agent.
Adsorption Of Metal Lead (Pb) In Batik Industrial Wastewater Using Cellulose-Based Adsorbent: Literature Review Sukmaningrum Latifah Oktaviani; Nurma Yunita Indriyanti
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 7, No 1 (2022): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jkpk.v7i1.55408

Abstract

This literature review aims to determine the characteristics of the batik industrial wastewater, the type of adsorbent activation method most widely used to adsorb lead (Pb) in the batik industry wastewater, and the correlation between the source of cellulose and parameters on the adsorption ability of lead metal (Pb) with variations in adsorbent mass, pH and contact time in batik industrial wastewater. This literature review was carried out in 7 steps: exploring topics, searching, storing, and organizing information, selecting the required information, expanding the search, analyzing, and evaluating. Information and present the results. This literature review shows that Batik industrial wastewater contains BOD, COD, TSS, and heavy metals. The literature review obtained that the BOD and COD values came from the batik industrial wastewater of Jetis Sidoharjo with a value of 1775.5 mg/L and 16654.80 mg/L, the largest TSS value came from the batik industrial wastewater Gedhog with a value of 449 mg/L. The largest metal content of lead came from the batik industrial wastewater of Wiradesa, with a value of 7.654 mg/L.  The most widely used activation method for treating adsorbents is the chemical activation method with strong acids such as HCl, HNO3, and H2SO4. There is a correlation between the source of cellulose and parameters in the adsorption of lead metal in batik industry wastewater. Different sources of cellulose and parameters resulted in different adsorption capacities. Based on the literature review, the highest percentage of cellulose was found in sawn teak (60%), corn cobs (41%), rice straw (37.71%), rice husks (34%), and kapok seeds (21.83%). Maximum adsorption lies in the adsorbent with a mass of 0.1 – 1g, pH 5-7, and 30-45 minutes contact time. 
Removal of Pb (II) Ions from Aqueous Solution using Mahogany (Swietenia macrophylla King) Sawdust as Lowcost Adsorbent Eko Prasetyo Kuncoro; Isni Arliyani; Handoko Darmoekoesoemo
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 7, No 1 (2022): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jkpk.v7i1.59757

Abstract

This research aimed to investigate the removal efficiency of Pb (II) ions using mahogany sawdust as an adsorbent. Several experiments were carried out to get the results. The batch adsorption method was used. The parameters studied were pH and contact time. The pH variation used was 2, 3, 4, 5, and 6. Contact time variation used was 5, 10, 15, 30, 60, 90, 120 and 150 minutes. To evaluate the isotherm model of the adsorption, the metal concentration variation used was 10, 25, 50, 100, 150, and 200 mg/L. To evaluate kinetics adsorption, pseudo-first-order and pseudo-second-order models were used. The characterization of the adsorbent was carried out by determining pHPZC, FTIR analysis, and SEM analysis. The adsorbent had a pHPZC of 5.63. FTIR spectra showed that the adsorbent had -OH functional group that could bind to Pb (II) ions. SEM analysis showed that the surface morphology of the adsorbent supported the removal of Pb (II) ions. In this work, pH 6 provided the highest removal of Pb (II) ions, while the contact time which provided the highest removal of Pb (II) ions was 30 minutes. The removal of Pb (II) ions followed the Freundlich adsorption isotherm, while the adsorption kinetics followed pseudo-second-order model. 
Integration Method of Religious Character Values in Chemistry Learning Agung Nugroho Catur Saputro; Nurfina Aznam; Crys Fajar Partana
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 7, No 1 (2022): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jkpk.v7i1.55601

Abstract

Science and religion are closely related because they come from one source, namely God Almighty. Therefore, the concept of the integration of science and religion must be implemented in the form of integrating religious characters in the science learning process. This study aims to identify and inventory the learning methods used to integrate religious character values in chemistry learning. This research is conducted by reviewing the literature, both in books, journal articles and popular scientific writings, about methods of integrating religious character values in chemistry learning. The main data sources are from journal articles that discuss the integration of religious characters in chemistry learning. The journal articles that became the main data source were ten articles obtained from the Google Scholar website using the keyword "integration of religious characters in chemistry learning". The research data were analyzed descriptively and qualitatively. A critical study was also carried out on the literature to obtain the correct conclusion. According to the teacher's creativity, the study results concluded that religious character values can be integrated in chemistry learning in various ways/methods. However, in their article, the researchers did not clearly and unequivocally mention the name of the learning method used to integrate religious characters in chemistry learning. Based on this conclusion, it is recommended that other research is needed to develop a learning model that integrates religious character values in chemistry learning. 
Revealing Chemical Misconceptions Through The Microteaching Process in The Era of The Covid-19 Pandemic Sri Winarni; Syahrial Syahrial
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 7, No 1 (2022): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jkpk.v7i1.55587

Abstract

Unlimited access to information during the Covid-19 pandemic allows students with limited basic knowledge to experience misconceptions. Misconception happens because there are no adequate filters for many students, and there is no guarantee of content validity by information providers. This research aim is to show the misconceptions experienced by pre-service chemistry teachers. This research is a qualitative design with the case study method. This research used a naturalistic paradigm framework. The study was conducted for one semester of the 2020/2021 academic year for 16 meeting courses. The research participants consisted of pre-service chemistry teachers who were taking microteaching courses. Researchers are the main instrument. Data were collected through observation, focus group discussions (FGD), and document media analysis. The results showed six chemical misconceptions. Five misconceptions are non-proposition statements, and one is a chemical representation. Two of the six misconceptions found are resistant. Misconceptions that originate from written media and structured writing are difficult to overcome. Based on the study results, misconceptions about prerequisite concepts need to be eliminated before learning a new concept. Pre-service chemistry teachers need to use learning resources from the author's work according to their field of expertise.  They have gone through the review and validation stages to avoid misconceptions.

Page 17 of 26 | Total Record : 255

 15   16   17   18   19 

Filter by Year

2016 2024


Reset
Filter By Issues
All Issue Vol 9, No 2 (2024): JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 9, No 1 (2024): JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 8, No 3 (2023): JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 8, No 2 (2023): JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 8, No 1 (2023): JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 7, No 3 (2022): JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 7, No 2 (2022): JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 7, No 1 (2022): JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 6, No 3 (2021): JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 6, No 2 (2021): JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 6, No 1 (2021): JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 5, No 3 (2020): JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 5, No 2 (2020): JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 5, No 1 (2020): JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 4, No 3 (2019): JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 4, No 2 (2019): JKPK ( Jurnal Kimia dan Pendidikan Kimia) Vol 4, No 1 (2019): JKPK ( Jurnal Kimia dan Pendidikan Kimia) Vol 3, No 3 (2018): JKPK( Jurnal Kimia dan Pendidikan Kimia) Vol 3, No 3 (2018): JKPK( Jurnal Kimia dan Pendidikan Kimia) Vol 3, No 2 (2018): JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 3, No 1 (2018): JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 3, No 1 (2018): JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 2, No 3 (2017): JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 2, No 2 (2017): JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 2, No 2 (2017): JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 2, No 1 (2017): JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 1, No 1 (2016): JKPK (Jurnal Kimia dan Pendidikan Kimia) More Issue