Garuda - Garba Rujukan Digital

Article Per Year (5 Year)

All

JKPK (Jurnal Kimia dan Pendidikan Kimia)

jkpk
Website

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 218 Documents

1 2 3 4 5

Synthesis and Characterization of Bioplastic from Chitosan-Ganyong Starch (Canna edulis) Agung Nugroho Catur Saputro; Arruum Linggar Ovita
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 2, No 1 (2017): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

The purpose of this study was to produced bioplastic from chitosan-ganyong starch and compare its quality to commercial biodegradable plastic. This research was carried out by experimental method in laboratory. Making bioplastic film was done by dissolving, blending, printing, drying, and neutralizing process. Characterization of bioplastic film was performed by tensile strength test,% elongation, thickness, swelling, solubility, biodegradability and functional group analysis with FTIR. The produced bioplastic characterizations were compared to commercial biodegradable plastics. The results concluded that the qualities of bioplastic chitosan-ganyong starch are higher than commercial biodegradable plastics on tensile strength parameter (53,9644 Mpa : 18,4109 MPa),% elongation (1,8066 % : 3,7025%), and degradation ability (5 days : 30 days); but lower in thickness parameters (0.0350 mm: 0.0140 mm), % swelling (0.275%: 0.010%), and solubility (0.10%: 0.05%).

Acid Base Indicator from Shoot-Leaves Ethanol Extract of Pucuk Merah (Syzygium oleana) Sukemi Sukemi; Usman Usman; Boyfanie Ivan Putra; Widya Purwati; Nindy Nur Rahmawati; Sela Defi Alib Pradani
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 2, No 3 (2017): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Experiment on natural acid-base indicators is usually done by extracting the natural sources with certain solvent, testing the extract with acid, base and neutral solutions, observing the color changes, making conclusion and discharging the remaining extract at the end of the experiment. Production of long-lasting natural acid-base indicator is needed to reduce the discharged of chemicals excessively. This research was carried out to produce natural acid-base indicator from extract of shoot leaves of Syzygium oleana (SLS). The extraction was done by maceration technique using ethanol 95% for 13 h. The extract of SLS (SLS indicator solution) is then used to produce SLS indicator paper by soaking the filter paper in SLS indicator solution and followed by drying under shade. Both of the solution and paper indicators were tested for their color changes in pH solutions range of 1-13. Durability and performance of the indicator was investigated for 6 d. Absorbance of the indicator solution was measured under wavelength of 200-700 nm by using UV-Vis spectrophotometer. The results showed that, both of the indicators can be used as acid-base indicator; even it can be used to determine the pH range of solution. The color changes of SLS indicator in solution pH of 1-13 were pink-fade green-moss green-brown. Both of the indicators showed a good performance in their color change for 6 d of storage. Thus, the ethanol extract of SLS can be used as raw material to produce acid-base indicator.

Development of Organic Chemistry I Learning Module Integrated Experiment Based on Conceptual Change Model ED3U (Explore, Diagnose, Design, Discuss, Use) Suryelita Suryelita; Zonalia Fitriza
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 3, No 1 (2018): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Organic Chemistry lecture requires the student to be able to think critically in getting knowledge and prove the facts through experiment. The problem of this lesson is the students have different ability to receive the concepts. To overcome this matter a teaching material, like a module which can facilitate the students who cannot follow lecture well is needed. Therefore, a module which is based on the conceptual change model ED3U (Explore, Diagnose, Design, Discuss, Use) was developed with the steps that activate critical thinking and skilled which appropriate for the learning outcome in alcohol lesson. The module was validated, tested for its practicality and affectivity to ensure the quality and functionality of the module to help students gained conceptual change. The instrument used for validity and practicality test was questionnaire, while test was used for evaluating its effectiveness. The Data was analysed using Cohen Momen Kappa Formula. The result showed that the module developed was valid, practical and effective and fit the category very high with the positive result for conceptual change.

Practicality Analysis of Developing the Student Worksheet Oriented Blended Learning in Acid Base Material Ayu Irsalina; Kusumawati Dwiningsih
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 3, No 3 (2018): JKPK( Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

This study aims to produce a Student Worksheet (LKPD) in an integrated manner with blended learning oriented, the learning was carried out based on 1) the online and offline activities of students; and 2) student responses. The design of this study was using the stages of defining, designing, and developing, followed by testing. Data collection had been conducted by using instruments for measuring student activity and responses. The results of this study indicate that 1) the online and offline activities of students were 97.03 and 98.33%, respectively and 2) the results of the questionnaire responses of students were 93.33%. Based on the results of the response and online and offline activities it can be indicated that the development of LKPD is very practical to be use in acid-base subject learning.

Influence of Silicate and Calcium Ions to Transport of Phosphate Ion through Polymeric Inclusion Membrane (PIM) Barlah Rumhayati; Qonitah Fardiyah; Himayatul Musyarofi
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 2, No 2 (2017): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Measurement of phosphate ions by molybdenum blue method is influenced by the presence of interfering ions, such as silicate and calcium ions. To obtain an accurate measurement, interference ions should be separated from the phosphate ion. Separation could be carried out with extractions using PIM method. The effectiveness of separation based on PIM method depends to the transport efficiency of targeted ion from feed phase to stripping phase. The aim of this research was to determine the effect of silicate and calcium ions to phosphate ion transport through PIM. PIM was prepared by mixing PVC as polymer, 1,10-dekanadiol as a plasticizer, and Aliquat 336-Cl as extractant in the solvent THF. Extraction was performed by using a diffusion cell, The cell was consisted by two containers, i.e feed phase container and stripping phase container which was separated by PIM. Feed phase was a mixture of phosphate 100 mg / L and SiO32- at 5; 10; 15; 20 and 25 mg/L for studying the effect of silicate ion. Investigation of calcium ion effect was conducted by using a mixture of phosphate solution of 100 mg / L and Ca2+ of 1.13x10-4; 2.26x10-4 and 4.52x10-4 mg/L in the feed phase. The stripping phase was the solution of NaCl 0.1 M. Both containers were stirred for 3 hours at 180 rpm. The solution in the both containers was taken for 1 mL every 30 minutes. Phosphate ion was measured by visible spectrophotometry at 690 nm with molybdenum blue method. Silicate ion was determined by visible spectrophotometry at a wavelength of 410 nm with molybdenum blue method. Calcium ion was determined by AAS. The results showed that the higher concentration of calcium ions, the lower the phosphate ion transport efficiency. Only 34.46% of phosphate ions transported in the presence of calcium ions up to 4,52x10-4 mg/L. Meanwhile, PIM was more selective to silicate ion than ion phosphate at the silicate ion concentration up to 15 mg/L. At higher concentration of silicate ions, PIM was more selective to phosphate ion.

Cellulose Compound of Cacao Waste and Chemical Composition of Cacao Vinegar with GC-MS Method Mohammad Wijaya. M; Muhammad Wiharto; Muhammad Anwar
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 2, No 3 (2017): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Potential of cacao resources at Indonesian is very dependent on the production of cacao produced by farmers and plantation availability. However, the cacao processing results are still not optimal to increase the cacao production. This is due to the disruption of pests and the number of cacao farmers over land functions for fast growing plants. Processing cacao produced cacao waste and with the use of pyrolysis technology is able to cope with the accumulation of plantation waste. This combustion results in liquid smoke of cacao (cacao vinegar) into distillate, charcoal. This study used pyrolysis temperature between 100-500 °C. The aim of this research is to analyze the cocoa waste and the results are cellulose content 17,27%, lignin 52,02% and hemicellulose 19,56%. The results of GC-MS analysis for cacao vinegar of Distric Wajo are acetic acid, n butane, methyl ester, propanoic acid, butanoic acid, cyclopenanone, 2 methyl pyridine, acetyloxy 2 propanone, butyrolactone, tetrahydro 2 furan methanol, 2,3 dimethyl 2 cyclopentene 1 on and Mequinol. The water content of the charcoal of cacao shell from Wajo district is 3.42%. The analysis results of the bound carbon content of activated charcoal of cacao shell is 54.45%. The EDS analysis for cacao shell from Wajo district resulted in C: 61.12%, O: 36.65%, Si: 0.59%, P: 1.48% and Al: 0.17%. Utilization of cocoa shell waste using pyrolysis technology can reduce carbon emissions to the environment. So that the development of everything can continue and the sustainability of forest remain sustainable.

Validation of the TSH IRMA Kit for Determination of the TSH Levels in Human Blood Serum Gina Mondrida; Sutari Sutari; Triningsih Triningsih; Sri Setyowati; V. Yulianti S; Wening Lestari; Agus Ariyanto; Puji Widayati
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 3, No 3 (2018): JKPK( Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

TSH IRMA kit is a kit used for the determination of TSH (Thyroid Stimulating Hormone) levels in human blood serum. Thyroid hormone is a hormone that our bodies need for growth of the brain, bone and other tissues and regulate the metabolism in the body. TSH normal range for adult is in the range of 0.4-4.5 mIU/L, whereas for baby is about 3.0-18.0 mIU/L. Thyroid would affect the quality of optimal growth of children if disturbed. Therefore, TSH assay in the blood needs to be determined to know whether the function of the thyroid gland works normally or not. Detection of TSH in blood can be performed by Immunoradiometricassay (IRMA) method. IRMA method is one of the immunoassay techniques based on immunological reactions (antigen-antibody binding) using radionuclide 125I as a tracer, that sample in small quantity can be detected. IRMA method was developed locally by replacing TSH IRMA kit which is costly since imported from commercial companies. Center for Radioisotope and Radiopharmaceutical Technology (PTRR) BATAN has successfully developed the TSH IRMA kit that can be used to determine the levels of TSH in human blood. TSH IRMA kit must be validated to know the limit of detection, sensitivity, accuracy, precision and the assay parameters, such as Non-Specific Binding (NSB) and Maximum Binding (MB). Validation of TSH IRMA kit had been carried out resulting in the limit of detection of 0.115 ng/mL, accuracy with a recovery of 93.6-108.0 %, intra-assay precision (% CV) QC L = 1.9848, QC M = 3.6360 % and QC H = 2.2085 % while the inter-assay precision (% CV) QC L = 11.0055, QC M = 5.6768 % and QC H = 5.4181 %. It was concluded that this TSH IRMA kit showed good performance based on the % NSB and % B/T of 0.68 and 34.64 %, respectively.

Characterization of Cacao Fruit Skin for Active Carbon and Green Chemicals Mohammad Wijaya.M; Muhammad Wiharto
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 2, No 1 (2017): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

The potential of cacao fruit skin that has not been widely used by the community are encouraged to develop the cacao fruit skinas bio charcoal. One way to reduce the build up of biomass waste is by pyrolysis derived from combustion products that produce liquid smoke, charcoal and some gases (CO2, H2, and CO2). The purpose of this research is to utilize cacao peel to get the liquid smoke of cacao skin and cacao charcoal. The result of this research showed that the skin of cacao fruit produce hemicellulose content of 21.06%, cellulose of 20.15% and lignin of 51.98%. The analysis result of carbon content of cacao skin activated charcoal from Luwu regency is 55.11%. FT-IR analysis of the cacao skin powder from Luwu regency showed that there were depolymerization for cellulose and hemicellulose contentsat the wave number of 1107.14 cm-1 andfound C-H of lignin at the wave number of 1730.15 cm-1. The hydroxyl group (OH) appeared on the wave number of 3441.01 cm-1 and group of C = CH (Aromatic H) on the wave number of781.17 – 659.66 cm-1. Crystallinity degree of cacao fruits skin from Luwu which was obtained from XRD analysis is 12.66%. The wasteutilization of this cacao fruit skin with pyrolysis technology is able to reduce carbon emissions and can be as a supporter of sustainable development program.

Optimization of Thyroglobulin Coated Tube for Thyroglobulin IRMA Kit Sutari Sutari; Triningsih Triningsih; Sri Setiyowati; V.Y. Susilo; Agus Ariyanto; Puji Widayati; Wening Lestari
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 3, No 2 (2018): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Immunoradiometric assay (IRMA) is a method of analysis based on immunological reactions of antigens-antibodies binding. This highly specific and sensitive method was used for in vitro diagnosis in small quantity of sample. Center for Radioisotope and Radiopharmaceutical Technology, BATAN has developed Thyroglobulin IRMA Kit using coated tube method that can determine thyroglobulin levels in microgram quantities. Coated tube was made with immobilisation of anti thyroglobulin into polistyrene tube. Development of IRMA kit performed through several steps including: optimization component of kit, optimization assay and kit validation. Optimization of coated tube involved selection and volume of solvent, using blocking and non-blocking agent, and volume of blocking agent. The optimum condition for coated tubes was found to be using 0.1M phosphate buffer pH 7.4 with coating volume of 500 μL, 3% BSA in 500 μL blocking agent 0.1M phosphate buffer pH 7.4, with maximum binding and non-specific binding (NSB) of 60.58 and 1.40%, respectively. The optimized coated tube was found to be stable up to 4 weeks.

Indeks Subjek dan Indeks Penulis Indeks Indeks Subjek dan Indeks Penulis
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 3, No 3 (2018): JKPK( Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Page 3 of 22 | Total Record : 218

1 2 3 4 5

Filter by Year

2016 2023

Filter By Issues

All Issue 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

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

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

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

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
-

Contact Email
-

Phone
-

Journal Mail Official
-

Editorial Address
-

Location
Kota surakarta,

Jawa tengah

INDONESIA