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All Journal Jurnal Pendidikan Indonesia JOIV : International Journal on Informatics Visualization Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Akademika Kimia Abdi Dosen : Jurnal Pengabdian Pada Masyarakat Journal of Applied Science, Engineering, Technology, and Education Jurnal Pengabdian kepada Masyarakat Nusantara Ideguru: Jurnal Karya Ilmiah Guru Jurnal Riset Pendidikan MIPA Mattawang: Jurnal Pengabdian Masyarakat Quantitative Economics and Management Studies Panrannuangku Jurnal Pengabdian Masyarakat Media Eksakta Jurnal Akademika Kimia Jurnal Ilmu Pendidikan Indonesia Jurnal Akademika Kimia Malacca: Journal of Management and Business Development SIMBIOSIS

Purnama Ningsih

Program Studi Pendidikan Kimia, Fakultas Keguruan Dan Ilmu Pendidikan, Universitas Tadulako, Indonesia

Author-ID : 330647

Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Health Professions Industrial & Manufacturing Engineering Library & Information Science Materials Science & Nanotechnology Mathematics Physics Public Health Social Sciences Other

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Utilization of Extract of Sambang Getih Leaves (Hemigraphis colorata. Hall. F) as a Acid-Base Indicator Eksari Ekasari; Purnama Ningsih
Jurnal Akademika Kimia Vol. 9 No. 1 (2020)
Publisher : Universitas Tadulako

Getih sambang leaves (Hemigraphis Colorata. Hall. F) are plants that have a distinctive and unique color, namely the upper surface of the leaf is green and the bottom of the leaf is burgundy where sambang leaves contain anthocyanin compounds. Anthocyanin is the color pigment in plants that forms the basis of the use of natural indicators. This study aims to prove whether getih cucumber leaves can be used as an acid-base indicator, to determine the type of acid-base titration that is suitable for indicators of getih cucumber leaves, and to find out what the pH-changing color route of getih cucumber leaves is. The method used is extraction, namely maceration. Wee leaves are macerated by using methanol as a solvent for 24 hours. The extract was previously tested using HCl solution and NaOH solution as a test to prove the presence of anthocyanin. The results obtained in this study, getih sambang leaf extract can be used as an indicator of acid base, and also the type of acid-base titration that is suitable for use in the indicator of getih leaf extract extract precisely on the titration of strong-base strong acid, and strong weak base-acid It is best used as a substitute for the phenolphthalein indicator. In titration of strong and weak acids and bases, it is good to be used as a substitute for the indicator of methyl orange. The pH range obtained from the getih sambang leaf extract is pH 4-7 (red-purple).

The Intuitive Thinking Ability of Students of Grade XI Science at SMA Negeri 4 Palu through the Implementation of Discovery Learning Model on Colloidal Material Muh. F. I. Ote; Paulus H. Abram; Purnama Ningsih
Jurnal Akademika Kimia Vol. 9 No. 1 (2020)
Publisher : Universitas Tadulako

This study aimed to describe the intuitive thinking ability in Grade XI SMA Negeri 4 Palu through the implementation of discovery learning model on Colloidal material. This study was a One-Shot Case Study design. The population of this study was all students of grade XI Science at SMA Negeri 4 Palu, and the sample was Class XI Science 3 as the replication class 1 and class XI Science 6 as the replication class 2. The results obtain the intuitive thinking ability of replication class 1 is that the students who solved the problem with a reasonable answer, that is 86.43% in the very high category. Students who solved problems using prior knowledge and experience, that is equal to 77.14% in the high category, and students who solved problems based on generalization of examples or concepts, that is 84.46% in the very high category. While the intuitive thinking ability of replication class 2 is that the students who solved problems with a reasonable answer is 52.85%, in the medium category. Students who solved problems using prior knowledge and experience, that is equal to 76.42% included in the high category, and students who solved problems based on generalization of examples or concepts that is equal to 83.92% in the very high category.

Analysis of Hard Water Coagulation in Water Sources of Kawatuna using Aloe Vera Plant Baby Melyta Pallar; Paulus Hengky Abram; Purnama Ningsih
Jurnal Akademika Kimia Vol. 9 No. 2 (2020)
Publisher : Universitas Tadulako

Aloe vera gel is one of the plants that can be used as a natural coagulant. The chemical content in aloe vera has similarities to the cactus with the presence of mucilage or gel which can be used to purify water. This study aimed to determine the ability of aloe vera gel as a natural coagulant for water purification of Kawatuna water source and to determine the optimum volume of aloe vera gel. The steps of the study were preparing water sample, preparing aloe vera gel, coagulating of water, and analyzing parameters of water qualities i.e hardness, turbidity, color, temperature, pH, and total dissolved solids (TDS). The results showed that aloe vera gel was able to be used as a natural coagulant to purify water with the optimum ratio of 1 mL of aloe vera gel in 500 mL of the water sample. Aloe vera gel reduced turbidity, hardness, and color by 58.33, 15.45, and 50.36%, respectively, with a pH of 4.1, temperatures at 30 oC, and TDS of 77.51%. This study concluded that aloe vera gel able to be used as a coagulant to purify water.

Antioxidant Activity Test of Acetone and Ethanol Extracts of Cocoa (Theobroma cacao L.) Beans Husk Siti S. K. Pandjo; Kasmudin Mustapa; Purnama Ningsih
Jurnal Akademika Kimia Vol. 10 No. 1 (2021)
Publisher : Universitas Tadulako

Cocoa beans husk is waste produced from the cocoa processing industry containing alkaloid, flavonoid, tannin, saponin, and triterpenoid compounds. This material has the potential to be used as a source of natural antioxidant compounds. This study aimed to determine the antioxidant activity of cacao beans husk extracts by comparing acetone and ethanol as solvents through the extraction process. This antioxidant activity was determined using the DPPH (1,1-diphenyl-2-picrylhydrazyl) test method measured by UV-Vis spectrophotometer after adding an extract of cocoa beans husk. The positive control was vitamin C, while the negative control was DPPH solution dissolved in ethanol. The results showed that the extract of cacao beans husk has more potent antioxidant activity with a lower IC50 value of 181.2 ppm, while the acetone extract has an IC50 value of 247.9 ppm

Comparison of High School Student’s Learning Outcomes Using Cooperative Learning Model Between Think-Pair-Share (TPS) and Teams Games Tournament (TGT) Types on Reaction Equation Nurlia L. Radjabani; Ratman Ratman; Purnama Ningsih
Jurnal Akademika Kimia Vol. 10 No. 1 (2021)
Publisher : Universitas Tadulako

This study aimed to describe the difference between students’ learning outcomes from the class using the cooperative learning model of think pair share (TPS) type and teams games tournament (TGT) type on the topic of reaction equation in class X at MAN 2 Model Palu. This study was a pre-experiment with the static group pretest-postest design. This study was conducted in two groups i.e., class XA as experiment group 1 (n = 24) and Class XB as experiment group 2 (n = 23). Data of students’ learning outcomes were analyzed using t-test two-party statistical analysis with the prerequisite of normality and homogeneity tests of the data from the given posttest. The analysis results obtained the average score of experimental class 1 (1X) was 68.25, while the average score of the control class (2X) was 63.15. The hypothesis test results obtained tcount = 2.47 and ttable = 2.02 with significance level = 0.05 and degrees of freedom 45, then H0 was rejected, and Ha was accepted. Based on these results, it can be concluded that students’ learning outcomes from the class using the cooperative learning model of think pair share (TPS) type is different from the class using cooperative learning model of teams games tournament (TGT) type on the topic of reaction equation in the Class X at MAN 2 Model Palu. Students' learning outcomes in experimental class 1 were higher than in experimental class 2.

Preliminary Study of Chemistry Knowledge Through Ethnochemistry Approaches to Communities Ade P. Maedja; Purnama Ningsih
Jurnal Akademika Kimia Vol. 10 No. 3 (2021)
Publisher : Universitas Tadulako

This research was a descriptive qualitative study using ethnographic methods. It aimed to determine the understanding and application of chemistry knowledge in the daily lives of Wiapore society, Marawola Barat district, through an ethnochemistry approach. Data obtained was in the form of an initial data inventory. These inventory data were then grouped into several data categories, namely categories related to food, beverage, and agriculture categories. The percentage value of each data was as follows, related to food 55.55%, related to drinks were 22.22%, and connected to agriculture were 22.22%. The results of this study are significant for local governments in taking policies relating to education for children and the Wiapore community

Analisis Miskonsepsi Siswa Kelas XI SMA Negeri 1 Banawa Tengah Pada Pembelajaran Larutan Penyangga Dengan CRI (Certainty of Response Index) Miftahul Jannah; Purnama Ningsih; Ratman Ratman
Jurnal Akademika Kimia Vol 5, No 2 (2016)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (377.739 KB)

The aim of this study is to analyze misconception of student in class XI SMA Negeri 1 Banawa Tengah on the buffer material. The type of this research is a description where the subject of research is 41 student. The instrument used was a multiple choice test with reasoned (CRI). It consists of 13 items which was accompanied by questionnaries. The results were obtained information that the students have misconceptions on subconcepts calculate pH buffer solution and way of working buffer solution, with amount of 37 students (46%). students at least experienced a misunderstanding on the component subconcepts buffer solution and way of working buffer solution with amount 17 student (21%). Furthermore, causes of student misconception is due to the lack of interest of student in the buffer solution material (22%), praconception and less understanding of the concept (80%), textbook of student (34%), and model of learning (57%). The result of this study shows that most of students in class XI SMA Negeri Banawa Tengah have misconception on the buffer material.

Utilization of Papaya and Pandan Leaf Extract as a Source of Vegetable Pesticides Vivi D. A. Sangkota; Sitti Rahmawati; Purnama Ningsih; Jamaludin M. Sakung
Jurnal Akademika Kimia Vol. 11 No. 3 (2022)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2022.v11.i3.pp183-189

In this study, the manufacture of vegetable pesticides using natural ingredients of papaya leaf extract and pandan leaf extract has been carried out as a substitute for synthetic pesticides to kill plant pest organisms (OPT). This research was an experimental study using 250 experimental organisms Larvae of Spodoptera litura which were divided into 5 groups. Each group consisted of 10 larvae of Spodoptera litura. Each group was repeated 5 times. As test materials, papaya leaf extract and pandan leaf were added to the media solution containing the test organisms. The concentration of each extract was different for each treatment in each vial, for P1 (Papaya Leaf) which was 150 ml, P2 (Pandan Leaf) 150 ml, and P3 300 ml (Mixture of Papaya Leaves and Pandan Leaves), and Control was 0ml. Data were obtained by counting the number of larvae that died on the first day after application. Based on the data, the percentage value of larval mortality was calculated using the Percentage formula, while the percentage value of larval mortality in the control treatment was calculated using the Abbott formula, the average value of mortality for each replication was calculated using the Datum formula. Based on the testing of vegetable pesticides from papaya leaf extract and pandan leaf extract, the characteristics of vegetable pesticide products from papaya leaf extract and pandan leaf extract were obtained, with the highest mortality percentage obtained in P3 treatment (a mixture of papaya leaf extract and pandan leaf extract) of 88%, while the percentage of mortality was 88%. in treatment P1 (pawpaw leaves) by 70%, and the percentage value of death in treatment P2 (pandan leaves) by 38%. From these results, papaya leaves and pandan leaves are effectively used as sources of environmentally friendly vegetable pesticides in killing plant pests of Spodoptera litura larvae.

Kandungan Magnesium, Kalium, Kalsium Dan Fosfor Pada Produk Pangan Dari Tepung Biji Durian Irwan Said; Baharuddin Hamzah; Jamaluddin Sakung; Purnama Ningsih; Poppy Fitra Wahyuni; Rezki Rezki
Media Eksakta Vol 19 No 1 (2023)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/me.v19i1.3663

Durian seed flour can be used for the manufacture of food products such as sticks and steamed sponges. Sticks and steamed sponge cake are foods that many people like from children to adults. Durian seed flour is rich in minerals including magnesium, potassium, calcium and phosphorus. This study aims to determine the content of magnesium, potassium, calcium and phosphorus in food products from durian seed flour using Atomic Absorption Spectrophotometer (SSA) and UV-Vis Spectrophotometry. The results showed that the magnesium content in the sticks of durian seed flour with formulation 1 (0% durian seed flour) amounted to 84,053 mg/kg, formulation 2 (50% durian seed flour) amounted to 145,213 mg/kg and formulation 3 (100% durian seed flour) amounted to 142,313 mg/kg. Potassium content on sticks from durian seed flour with formulation 1 (0% durian seed flour) of 1,186 mg/kg, formulation 2 (50% durian seed flour) of 1,863 mg / kg and formulation 3 (100% durian seed flour) of 1,693 mg/kg. The calcium content in steamed sponge from durian seed flour with formulation 1 (0% durian seed flour) of 30.37 mg/kg, formulation 2 (50% durian seed flour) of 37.84 mg/kg and formulation 3 (100% durian seed flour) of 35.84 mg /kg. While the phosphorus content n steamed sponge from durian seed flour with formulation 1 (0% durian seed flour) of 17.1 mg/kg, formulation 2 (50% durian seed flour) of 27.1 mg/kg and formulation 3 (100% durian seed flour) of 24.3 mg/kg.

The Implementation of Demonstration Method to Students Learning Outcomes and Interests on Colloid Materials at Class XI Science of SMA Negeri 1 Kasimbar Megawati Megawati; Suherman Suherman; Purnama Ningsih
Jurnal Akademika Kimia Vol. 9 No. 2 (2020)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2020.v9.i2.pp87-92

This research aims to examine the demonstration method on chemistry learning through colloid materials to learning achievement and interest of students at class XI Science of SMA Negeri 1 Kasimbar. This research was a true experimental design with pretest-posttest control group design. Sampling was carried out based on special considerations (purposive sampling) with 21 students in class XI science 2 as a sample of experimental class and 21 students of class XI science 1 as control class. This research instruments were a learning achievement test and questionnaire. Data was analyzed through descriptive statistical analysis, namely test questionnaire data, as well as inferential statistical analysis to test the hypothesis using two-party t-test. Analysis of questionnaire data of students’ learning interests showed that the experimental class was in the agree to category with a percentage of 78.05% while the control class was in the agree category with a percentage of 60.63%. Therefore, it can be concluded that the demonstration method in chemistry learning on colloidal material affects the learning achievement learning interest of students class XI Science of SMA Negeri 1 Kasimbar.

Co-Authors A. Makuasa, Dian Anriani Ade P. Maedja Afadil Agussatriana Ahmar, Ansari Saleh Ahmar, Dewi S. Amalia, Maryam Amin, Alif Hidayatullah Amiruddin Kade Anak Agung Gede Sugianthara Andrianto Handojo, Andrianto Anggreni, Afrillia Arfiani, Arfiani Asy’Ari, Qaiyim Azzajjad, Muhammad Fath Baby Melyta Pallar Baharuddin Hamzah Baharuddin Hamzah Beddu, Amsar T. Boroallo, Paramitha Yemima C. Morokuhi, Yulina Daud Karel Walanda Dewi Satria Ahmar Dian Anriani A. Makuasa Eksari Ekasari Elvita, Febby A. Fardiana, Fardiana Fauzhia, Hariati Genefefa T., Fulgensia Hasanah, Fitriyatun Hendrik Kurniawan Hikmawandari, Hikmawandari I Made Subrata, I Made Ijirana Irwan Irwan Irwan Said Jamaludin M Sakung K. Walanda, Daud Kaipal, Kaipal Kasmudin Mustapa Khair, Fathul Lage, Mersed Djein Leonardo Leonardo Luh Putu Ratna Sundari Magfirah Magfirah Mardiati Sulistyowati Maryam Maryam Megawati Megawati Mery Napitupulu Miftahul Jannah Mihra, Mihra Minarni Rama Jura Mubarik Mubarik Muh. F. I. Ote Muhammad Fakhrul Hardani Muhammad Zaky Nasution, Annio Indah Lestari NB Prihantini, NB Ningsih, Dwi Arista Nining Prihantini, Nining Nur Hayati Nur wahidah Nurfianti NURLAELA NURLAELA Nurlia L. Radjabani Oktavia, Rini Parwanayomi, Ni Made Susun Pathuddin Pati, Andi C. D. Patmasari, Andi Paulus H. Abram Paulus Hengky Abram Poppy Fitra Wahyuni Rahma, Nur Ratman Ratman Ratman Ratman Ratman Ratman Reny, Reny Reny, Reny Rezki Rezki Ririen Hardani Riski, Fahrul SANG KETUT SUDIRGA Satriani, Dewi Singgih Sugeng Santosa Siti Aminah Siti Fatimah Siti Nuryanti Siti S. K. Pandjo Sitti Aminah Sitti Rahmawati Sri Hastuti Virgianti Pulukadang Sri Mulyani Sri Mulyani Sabang Sri Wahyuni Suherman Suherman Sulviana Supriyatman, Supriyatman Syamsiar, Syamsiar Tiwow, Vanny Maria Agustina Toyyibah, Nurul Tri Santoso Vivi D. A. Sangkota

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