Jurnal Akademika Kimia
Jurnal Akademika Kimia merupakan jurnal elektronik open access yang bertujuan untuk mempublikasi hasil-hasil penelitian terbaru dalam area pendidikan akademik khususnya pada bidang pendidikan kimia meliputi asesment pembelajaran, model pembelajaran dan pengembangan perangkat pembelajaran, serta kimia murni termasuk kimia organik, kimia anorganik, kimia analitik, kimia fisik, biokimia dan bidang kimia lainnya seperti kimia lingkungan.
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<![CDATA[The Application of Cooperative Learning Model Type Review Course Hooray (CRH) and Jigsaw Towards Students’ Learning Outcomes on Class X SMA Negeri 9 Palu in Redox Materials ]]>
<![CDATA[Suheria, Suheria]]>;
<![CDATA[Mustapa, Kasmudin]]>;
<![CDATA[Said, Irwan]]>
<![CDATA[ Jurnal Akademika Kimia Vol 8, No 2 (2019) ]]>
Publisher : <![CDATA[Universitas Tadulako ]]>
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<![CDATA[A research on the application of cooperative learning model type course review hooray and jigsaw to the students’ learning outcomes of class X SMA Negeri 9 Palu on redox material has been implemented. This type of research was quasi-experiment with non-randomized pretest-posttest control group design. Determination of sample was done by purposive sampling method. The sample of this research was a student of class XA class as a control group (n =23) and student of class XB as experiment group (n=23). Data processing of students’ learning outcomes used a non-parametric test analysis Mann-Whitney U-Test test. The results showed that the mean of experiment class was bigger than control class that was 27.57>19.47. The statistical analysis resulted in sig. 2-tailed (0.033)˂0.05 and Zcount (-2.136)˂Ztable (-1.96). The influence of the application of cooperative learning model of course review hooray to students’ learning outcomes can also be seen in the descriptive statistic analysis with 2 mean posttest score for the experimental class was 69.60 while in control class was 59.39. The minimum criterion value was 68. Therefore, it can be concluded that there is an influence of application of cooperative learning model of course review horay type to the students’ learning outcomes of class X SMA Negeri 9 Palu in redox material.]]>
<![CDATA[The Differences on Students’ Learning Outcomes in Grade X at SMA Negeri 1 Parigi Through the Number Head Together (NHT) Learning Strategies and Discussion on the Topic of Redox Reaction ]]>
<![CDATA[H.J, Nur Rahmadana Safitri]]>;
<![CDATA[Diah, Anang Wahid M]]>;
<![CDATA[Afadil, Afadil]]>
<![CDATA[ Jurnal Akademika Kimia Vol 8, No 2 (2019) ]]>
Publisher : <![CDATA[Universitas Tadulako ]]>
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<![CDATA[This study aimed to determine the differences in students’ learning outcomes in grade X at SMA Negeri 1 Parigi through of number head together (NHT) strategies and discussion on the topic of Redox Reaction. Type of this study was a quasi experiment with posttest-only control group design. This study was conducted in two groups namely Class X MIPA A as the experimental group (n = 35) and Class X MIPA B as the control group (n = 37). The students’ learning outcomes data were tested by using non-parametric statistical analysis Mann-Whitney U-test. The result showed that for the mean value of the experimental class was bigger than the control class that was 44.24 ˃ 29.18. The result of statistical analysis obtained Sig. 2-tailed (0.002) ˂ 0.05 and Zaccount (-3.069) ˂ Ztable (-1.96). The average score of the experimental class was 64.52 while the control class was 62. It can be concluded that there is a difference on students’ learning outcomes in grade X at SMA Negeri 1 Parigi through of NHT strategies and discussion method on the topic of redox reaction.]]>
<![CDATA[The Difference of Students’ Learning Outcomes through the Implementation of Cooperative Learning Model Two Stay Two Stray type based Concept Maps with Problem Based Learning at MAN 2 Palu ]]>
<![CDATA[Kokou, Rizka Kurniawati]]>;
<![CDATA[Said, Irwan]]>;
<![CDATA[Mustapa, Kasmudin]]>
<![CDATA[ Jurnal Akademika Kimia Vol 8, No 2 (2019) ]]>
Publisher : <![CDATA[Universitas Tadulako ]]>
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<![CDATA[This study was conducted to determine the difference of students’ learning outcomes through the implementation of cooperative learning model two stay two stray type based concept maps with problem based learning at MAN 2 Palu. This study is pre experimental research with static group pre-test post test design. The population was all students of class X MIA at MAN 2 Palu registered in the academic year 2016/2017 as many as 6 classes with a total of 156 students. The sampling technique was purposive sampling. The sample in the experimental class 1 was as much as 27 students, and in the experiment class 2 was as much as 29 students. Data of students’ learning outcomes were tested using mean value, N-gain, and Mann-Whitney U-Test. The results of data analysis showed that the mean value ( ) of students in the experimental class 1 was 83.70, and the mean value ( ) of the experimental class 2 was 76.0. The N-gain value in the experimental class 1 obtained the high criteria gain index of 70.37%, the medium criteria gain index of 25.92%, and the low criteria gain index of 3.70%, while in the experimental class 2 obtained the high criteria gain index of 34.48%, the medium criteria gain index of 58.62%, and the low criteria gain index of 6.89%. The Mann-Whitney U-Test obtained Sig. 2-tailed (0.028) <0.05 and Zaccount (-2.200) < Ztable (-1.96), then H0 is rejected and Ha accepted. It can be concluded that there is a difference in students’ learning outcomes through the implementation of cooperative learning model type two stay two stray based concept maps with problem based learning at MAN 2 Palu.]]>
<![CDATA[Analysis of Pectin Levels in Banana Kepok (Musa paradisiaca) and Banana Raja (Musa sapientum) ]]>
<![CDATA[Timang, Selfiana Imu]]>;
<![CDATA[Sabang, Sri Mulyani]]>;
<![CDATA[Ratman, Ratman]]>
<![CDATA[ Jurnal Akademika Kimia Vol 8, No 2 (2019) ]]>
Publisher : <![CDATA[Universitas Tadulako ]]>
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<![CDATA[Banana is a type of fruit that is relative widely consumed by community, either directly consumed or processed into other foods such as fried bananas and chips, while the peelsare usually thrown as waste. Banana peel is one source of pectin. Pectin is a polymer of D-galactaconic acid linked by an α-1,4-glycosidic bond. Pectin compounds are widely used in pharmaceutical, food, and beverage industries. This study aimed to determine pectin levels in banana peel and banana raja. This study was done by extraction method using HCl, added with 96% ethanol to filtrate to precipitate the pectin, then dried to obtain dry pectin. The solvent used was 0.05 N HCl (pH 1.5) with extraction temperature 90 for 80 minutes. The results showed that the extraction of banana kepok peel produced 12.243% pectin, while the extraction of banana raja peel produced 6.383% pectin.]]>
<![CDATA[Analysis of Iron (Fe) and Zinc (Zn) in Red Fruit (Pandanus conoideus De Vriese) ]]>
<![CDATA[Alizah, Nur]]>;
<![CDATA[Walanda, Daud K]]>;
<![CDATA[Hamzah, Baharuddin]]>
<![CDATA[ Jurnal Akademika Kimia Vol 8, No 2 (2019) ]]>
Publisher : <![CDATA[Universitas Tadulako ]]>
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<![CDATA[Red fruit plant (Pandanus conoideus De Vriese) is very potential for health. This is because the plant contains many nutrients, especially minerals that are needed for the human body. Iron and zinc are two micro-minerals that contained in red fruit, but the content data about those are not widely known. The aim  of this research was to determine iron and zinc content by atomic absorption spectrophotometric of red fruit from Mattirowaslle Village, South Pamona Sub-district, Poso Regency, Central Sulawesi. The water content of the sample obtained was 52%, and the ash content was 13.8%. While the analysis of iron and zinc content at wavelength 248.30 nm (iron) and 213.90 nm (zinc) obtained were 1,339 mg/100g for iron and 0,397 mg/100g for zinc.]]>
<![CDATA[Utilization of Chitosan as an Animal Feed Supplement and Its Effect on Fattening of Indigenous Chicken ]]>
<![CDATA[Nur Hakiki]]>;
<![CDATA[Suherman Suherman]]>;
<![CDATA[Paulus H Abram]]>
<![CDATA[ Jurnal Akademika Kimia Vol 8, No 2 (2019) ]]>
Publisher : <![CDATA[Universitas Tadulako ]]>
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<![CDATA[Feeding types to chickens influence on the fattening speed. The purpose of this study is to determine the influence of chitosan in the mixture of chicken feed on fattening of indigenous chickens. This study applied chicken feed as a mixture of corn and chitosan in various concentration of 0%, 2%, 4%, 6%, 8%, and 10% it was given on the morning, afternoon and early evening. The results showed that the weight of chickens fed only with animal feed and without the addition of chitosan is smaller than that of chicken fed with the addition of chitosan. The use of chitosan in livestock feed influence on the chicken weight gain in 1 week by 0.1 kg.]]>
<![CDATA[The Effect Application of Cooperative Learning Model STAD Type of Students Learning Outcomes on Atomic Structure Material at Class X of SMAN 4 Sigi ]]>
<![CDATA[Mariani, Sri]]>;
<![CDATA[Said, Irwan]]>;
<![CDATA[Ratman, Ratman]]>
<![CDATA[ Jurnal Akademika Kimia Vol 8, No 2 (2019) ]]>
Publisher : <![CDATA[Universitas Tadulako ]]>
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<![CDATA[The purpose of this research is to determine the effect of application of cooperative learning model STAD type (student-Teams-Achievement-Division) to high school in  Sigi. Type of the research was quasi experiment with non-randomized pretest-posttest control group design. The reseach population was all students of class X with sampilng technique was purposive sampilng method. Sample used for testing of students learning outcomes data used two-partiest-test statistic analysis. The result of data analysis obtained the average value(X1) experiment class was 66.17 with a standard deviation of 13.18. The results of hypothesis testing with two-parties t- test statistic were obtaied –ttable,<tcount>+ttable ( tcount= 7.04 and ttable = 2.02) with signifance level α = 0.05 and degrees of freedom was 42, so H0 was rejected and Ha was accepted. Therefore, it can be concluded that there is an effect of the application of cooporative learning model STAD type to the student’s learning outcomes on atomic structure material at class X of SMAN 4 Sigi.]]>
<![CDATA[The Protective Role of Single Bulb Garlic Towards Vascular Cell Adhesion Molecules-1 (VCAM-1) on Mice With High-Fat Diet ]]>
<![CDATA[Chasanah, Isfatun]]>;
<![CDATA[Gofur, Abdul]]>;
<![CDATA[Lestari, Sri Rahayu]]>
<![CDATA[ Jurnal Akademika Kimia Vol 8, No 2 (2019) ]]>
Publisher : <![CDATA[Universitas Tadulako ]]>
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<![CDATA[Atherosclerosis is initiated by inflammatory response characterized by the accumulation of lipids in the arteries, causing blockage of blood vessels. The excessive of Low-Density Lipoprotein (LDL) in the blood is a major factor in endothelial dysfunction and results in an inflammatory process. The inflammatory process in atherosclerosis is due to the expression of adhesion molecules Vascular Cell Adhesion Molecules-1 (VCAM-1). This research aims to evaluate the effect of single bulb garlic oil extract (SGBOE) against VCAM-1 expression high-fat diet mice. Male mice strain Balb/C were acclimatized for one week. Mice were divided into 6 groups (n=5): normal, high-fat diet (HFD), HFD + simvastatin, and HFD + SBGOE 12.5, 25, and 50 mg/kg BW respectively. HFD was given for 45 days. Single garlic extract was given for four weeks orally. The aortic VCAM-1 expression was assayed using the Immunohistochemical-Flouresence (IHK-F) method. The result of One-Way ANOVA showed that the treatment influenced significantly (p<0.05). The foam cells increase in the high-fat diet group compared than normal mice. Dose 12,5 mg/kg BW reduces VCAM-1 expression near the normal group. Allicin and S-allyl cysteine (SAC) compounds in single bulb garlic are antioxidant compounds that act to prevent oxidative stress and prevention mechanisms against lipoprotein modification.]]>
<![CDATA[Test of Antioxidant Activity of Ant Nest Plants (Myrmecodia tuberosa Jeck) Extract from Toli-Toli Sulawesi Tengah ]]>
<![CDATA[Indra, Pande]]>;
<![CDATA[Supriadi, Supriadi]]>;
<![CDATA[Ijirana, Ijirana]]>
<![CDATA[ Jurnal Akademika Kimia Vol 8, No 2 (2019) ]]>
Publisher : <![CDATA[Universitas Tadulako ]]>
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<![CDATA[Ant nest plants have the greatest diversity in Papua, but due to the different location and climate between Papua and Sulawesi, especially Central Sulawesi, the composition and the active compound are different. Differences of plant species will give differences in the content and quality of simplicia from ant nest plants. This study aimed to determine the power of antioxidant in ant nest extract (Myrmecodia tuberosa Jeck) from Toli-Toli, Central Sulawesi. The sample of this study was taken at Labonu, Basidondo, and extracted by maceration method. The testing of antioxidant activity used DPPH (2,2-Diphenyl-1-picrihydrazyl). Antioxidant activity of ant nest extract was measured using spectrophotometry with concentration 20, 40, 60 and 80 ppm. The results showed that ant nest plant extract was classified as a very powerful antioxidant with an IC50 value of 26.84 ppm.]]>
<![CDATA[Effect of Basil (Ocimum sanctum Linn) Leaf Extract As Repellent Against Mosquito Aedes aegypti ]]>
<![CDATA[Aulia, Nur]]>;
<![CDATA[Hamzah, Baharuddin]]>;
<![CDATA[Ningsih, Purnama]]>
<![CDATA[ Jurnal Akademika Kimia Vol 8, No 2 (2019) ]]>
Publisher : <![CDATA[Universitas Tadulako ]]>
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<![CDATA[Study on the effect of basil (Ocimum sanctum Linn) leaf extract has been done as a repellent against mosquito (Aedes aegypti). This study aimed to examine the effect of basil leaf extract on Aedes aegypti using an electrical device. This study usedan extraction method with ethanol 96%solvent followed by evaporation to obtain concentrated basil leaf extract. The concentrated extract was diluted to concentrations of 20, 30, 40 and 50% w/v. The results showed that the concentration of basil leaf extract 50% eliminatedmost mosquitoes (Aedes aegypti).]]>
