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All Journal Jurnal Kreatif Tadulako Online BUNGAMPUTI EDUKASI Jurnal Akademika Kimia SCAFFOLDING: Jurnal Pendidikan Islam dan Multikulturalisme Jurnal Ilmiah Kanderang Tingang Journal of Educational Chemistry (JEC) Jurnal Riset Pendidikan MIPA Journal of Disruptive Learning Innovation (JODLI) Journal International Journal of Teaching and Learning (INJOTEL) INTERNATIONAL JOURNAL OF SOCIETY REVIEWS (INJOSER) Jurnal Pengabdian Farmasi dan Sains Jurnal Akademika Kimia
Ratman Ratman
Tadulako University
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Engineering Immunology & microbiology Mathematics Medicine & Pharmacology Social Sciences Other

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Pengaruh Lama Penyimpanan Rimpang Kunyit (Curcuma domestica Vahl) Terhadap Daya Hambat Antioksidan Suparmajid, Armin H.; Sabang, Sri Mulyani; Ratman, Ratman
Jurnal Akademika Kimia Vol 5, No 1 (2016)
Publisher : Universitas Tadulako

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Abstract

The research about the effect of storage time of tumeric (curcuma domestica vahl) for inhibition of antioxidant has been conducted. The study aims to determine the effect of storage time of tumeric (curcuma domestica vahl) for inhibition of antioxidants as well as to determine how much inhibition of antioxidant found in tumeric. This study used a variation of storage time namely 8, 13 and 18 days. The extract of tumeric was obtained by maceration method using ethanol. The antioxidant activity of turmeric was measured by UV Vis spectrophotometry in which DPPH (1,1-difenil-2-pikrilhidrazil) as a reagent. The absorbance measurements was carried out at a wavelength of 517 nm to determine the percentage of inhibition of antioxidant in turmeric and vitamin C (as a positive control). The results revealed that percentage of inhibition of vitamin C is 56.68%, while the percentage of inhibition of turmeric decrease during storage. Based on the data obtained, turmeric with storage time of 8 days is 43.96%, turmeric with storage time of 13 days is 23.27%, and turmeric with storage time of 18 days is 11.92%. This study showed that the effect of storage time on the inhibition of antioxidant turmeric are characterized by a decrease of percentage inhibition of antioxidants in turmeric during the storage period.
Penerapan Model Pembelajaran Koopeartif Tipe Cooperative, Integrated, Reading and Composition (CIRC) Pada Materi Struktur Atom dan Sistem Periodik Unsur Kelas X SMAN 1 Pasangkayu Yuliana, Dewi; Walanda, Daud K.; Ratman, Ratman
Jurnal Akademika Kimia Vol 3, No 1 (2014)
Publisher : Universitas Tadulako

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Abstract

Reaserch was conducted on the atomic structure subject and the periodic table with implementing cooperative learning model type of coopeative, integrated reading and composition (CIRC) in SMAN 1 Pasangkayu is applied to the learning model with the conventional lecture method. This study aims to implement cooperative learning model of CIRC towards the chemical learning outcomes. The population in this study is a class X student of SMAN 1 Pasangkayu academic year 2013/2014 the number of students 300 people, and the study sample X.4 class as experiment class with (n = 30) applying cooperative learning model CIRC and class X.3 as class control the number of students (n = 32) whithout using cooperative learning model CIRC. Testing the hypothesis t-test of the right-hand side. The results of the analysis of data obtained average scores on the experimental class = 76.90 and 60.81 for the control class normaly distibuted both classes and has variance (F test) are homogeneous. Tesing hypothesis obtained tcount t-test = 4.73 > ttabel = 1.67 with a significance level (α) = 0.05. The results showed that the application of cooperative learning model CIRC gives the positive effect on student learning outcomes in the atomic structure subject and the periodic table of elements (H0 rejected H1 is accepted).
Analisis Kadar Kalium (K) dan Posforus (P) Pada Limbah Kangkung Darat (Ipomea reptans Poir) Setianingsih, Rahmadiana; Nuryanti, Siti; Ratman, Ratman
Jurnal Akademika Kimia Vol 7, No 1 (2018)
Publisher : Universitas Tadulako

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Abstract

This research is aimed to determine potassium (K) and phosphorus (P) levels in the waste of swamp cabbage. The Spectrodirect instrument was used to analyze the levels of potassium and phosphorus in the waste of swamp cabbage. Based on analysis of the levels of potassium and phosphorus in the waste of swam cabbage, it was obtained that the average value of K concentration in the sample was 5.51213 mg/kg. On the other hand, the average value of P concentration in the sample was 43.19503 mg/kg. From the result of this analysis, it also demonstrated that the concentration of phosphorus was higher than the concentration of potassium.
Penggunaan Model Pembelajaran Kooperatif Tipe Think Pair Share Berbasis Media Komputasi Pada Materi Struktur Atom Kelas X MAN Biau Rewa, Zakiyah S.; Ratman, Ratman; Said, Irwan
Jurnal Akademika Kimia Vol 3, No 3 (2014)
Publisher : Universitas Tadulako

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Abstract

This research was conducted using cooperative learning model think pair share an computing media and the atomic structure chosen as it is abstract. The use of models of learning chemistry applied these days make the student seen as passive listeners in teaching and learning process. This study aims to improve students’ learning outcomes in chemistry using cooperative learning model Think Pair Share and computational media. The population in this study were tenth grade student of MAN Biau academic year 2013/2014 with a sample of the class XC as the experimental class (implementing cooperative learning model based media computing TPS) and XB class as the control class (without implementing cooperative learning model TPS – Based media computing). The result showed that the mean score on the experimental class = 70 and the control class = 53 with normal distribution and homogeneous variance. Based on the t test testing hypothesis on right side test, the t test obtained = 5.57 > t table = 1,68 with a significance level (α) = 0.05. The results showed that the learning outcomes of the students in experimental class using cooperativ learning model based media Think Pair Share computing was better than the control class on the atomic structure material (H0 rejected H1 accepted).
Pengaruh Ekstrak Daun Kemangi (Ocimum sanctum L.) Terhadap Kelarutan Kalsium Batu Ginjal Sumarni, Wiwin; Sabang, Sri Mulyani; Ratman, Ratman
Jurnal Akademika Kimia Vol 6, No 3 (2017)
Publisher : Universitas Tadulako

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Abstract

The aim of the study is to determine dissolving power and the solubility of calcium on kidney stone by the extracts of basil (Ocimum sanctum L.) and determined the effect of basil leaves extracts concentration (%)on the solubility of kidney stones calcium. The method used the extraction infuse way. Variation of concentration extracts were 5%, 10%, 15%, 20% and 25%. The solubility of calcium in basil leaves extracts was determined by SpectroDirect. The results showed that concentration of 5% dissolved by 15.38% of calcium; concentration of 10% dissolved by 21.05%; concentration of 15% dissolved by 26.92%; concentration of 20% dissolved by 35.71%, and concentration of 25% dissolved by 42.10%calcium. It can be concluded that the extracts of basil leaves dissolved kidney stones calcium. The solubility tests showed that the higher the concentration of the basil leaves extracts than the greater the solubility.
Penentuan Konsentrasi Efektif Ekstrak Tanaman Patikan Kebo (Euphorbia Hirta) Merah Dan Hijau Dalam Melarutkan Kalsium Hamdiana, Hamdiana; Jura, Minarni Rama; Ratman, Ratman
Jurnal Akademika Kimia Vol 6, No 4 (2017)
Publisher : Universitas Tadulako

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Abstract

The use of traditional materials is one alternative for the treatment of kidney stones. One of them is utilizing a plant of patikan kebo (Euphorbia hirta). This study is conducted by using laboratory experiments and the extract of the plant of patikan kebo red and patikan kebo green to dissolve the calcium phosphate as a substitute for kidney stones. The extraction of samples is conducted by decoction. The aim of the study is to determine the effective concentration of the extracts of patikan kebo red and green to dissolve calcium and test the effectiveness of the extracts of patikan kebo to dissolve calcium compared to Batugin elixir and distilled water. Determination of the concentration of dissolved calcium in the extracts using a flame photometer. The results show that the extract of patikan kebo red with a concentration of 2.1% is effective in dissolve the calcium with a concentration of 5.2 ppm. The extract of patikan kebo green with a concentration of 27.4% is effective in dissolving the calcium with a concentration of 27.5 ppm. When compared with Batugin elixir and distilled water, Batugin elixir can only dissolve the calcium with concentration 15.3 ppm, while distilled water can only dissolve 3 ppm of the calcium.
Pengaruh Penerapan Model Pembelajaran Kooperatif Tipe Teams Games Tournament Berbasis Scramble terhadap Motivasi dan Hasil Belajar Siswa SMA Kristen GPID Palu Mbosisi, Sifra Bertin; Mustapa, Kasmudin; Ratman, Ratman
Jurnal Akademika Kimia Vol 7, No 1 (2018)
Publisher : Universitas Tadulako

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Abstract

This study aimed to determine the effect of the cooperative learning model type teams scramble tournament games based scramble on motivation and learning outcomes students SMA Kristen GPID Palu. The population in this study were all students of class X. The research sample was students (n = 25) of class Xa as a control class and students (n= 24) of class Xb as an experiment class. The testing of student’s learning outcomes data was using the statistical analysis t-test of the two parties and the testing of student’s' motivation using the questionnaire data used a descriptive analysis. The average score of student’s learning outcomes of the experiment class (X1) was 52.83 with a standard deviation of 11.97 and the control class (X2) was 48.12 with a standard deviation of 11.37. Based on the statistical analysis of the hypothesis by t-test two parties, it was obtained that –ttable ≤ tcalculation ³ +ttable (tcalculation = 2.09 and ttable = 2.02) with a significance level a = 0.05 and degrees of freedom = 47, then H0 was rejected and Ha was accepted, therefore it can be said that there is a difference in student’s learning outcomes using cooperative learning model type teams tournament games based scramble. The results of the data analysis of student motivation indicated that the percentage value for the experimental class was 83.4% and for the control class was 81.21% and both were on the agrees attitude with the positive category, so it can be concluded that there is an influence of the cooperative learning model type teams scramble tournament games based scramble on motivation and learning outcomes of students SMA Kristen GPID Palu.
Pengaruh Waktu Perebusan Biji Nangka (Artocapus heterophyllus Lamk) Terhadap Kadar Karbohidrat, Protein, Dan Lemak Yulianti, Selvi; Ratman, Ratman; Solfarina, Solfarina
Jurnal Akademika Kimia Vol 4, No 4 (2015)
Publisher : Universitas Tadulako

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Abstract

Jackfruit seeds are part of the jackfruit which were not used optimally. The seeds can be eat directly after boiling and can also be changed as flour because it contains carbohydrates, proteins, and fats. This study was conducted to test the levels of carbohydrates, proteins, and fats of jackfruit seeds after boiled at different times, which were 15 minutes, 30 minutes, and 45 minutes. Carbohydrates, proteins, and fats were determined successively using the phenol sulfuric acid, the kjeldahl and the soxhlet extraction methods. Levels of carbohydrates at various boiling times of 15 minutes, 30 minutes, and 45 minutes were 49.06%, 43.68%, dan 42.75%. Levels of proteins were 3.928%, 3.84%, and 3.57%, while levels of fats were 5.40%, 0.95%, and 0.40%. The results showed that the longer the boiling time affected to declining levels of carbohydrates, proteins, and fats.
Analisis Vitamin C Pada Buah Pepaya, Sirsak, Srikaya Dan Langsat Yang Tumbuh Di Kabupaten Donggala Cresna, Cresna; Napitupulu, Mery; Ratman, Ratman
Jurnal Akademika Kimia Vol 3, No 3 (2014)
Publisher : Universitas Tadulako

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Abstract

Vitamin C is known as ascorbic acid. The function of vitamin C is to help the synthesis of collagen and antioxidants that the body needs. Vitamin C can be obtained from fruits, and each fruit had different levels of vitamin C. This study aims to determine the levels of vitamin C in the fruit papaya, soursop, sugar apple and complexioned fruit. This study uses a volumetric method that uses a solution of iodine (I2) as the titer, and using starch as an indicator, and each piece studied every day for three days with the same treatment. The results obtained levels of vitamin C in papaya fruits in a row are the first day of 46.89 mg, the second day 34.6 mg, third day and 22.88 mg. Vitamin C in the complexioned fruits are the first day 82.28 mg, the second day 61.31 mg, and third day 37.14 mg. Vitamin C in the sweetsop fruit are the first day 49.83 mg, the second day 35.2 mg, and third day 20.46 mg. And the soursop fruit vitamin C content was obtained on the first day 62.42 mg, the second day 33.44 mg, and third day of 23.14 mg. The results demonstrated that levels of Vitamin C in four fruits had decreased each day since the time of storage.
Perbedaan Hasil Belajar Siswa Kelas X Di SMA Negeri 1 Marawola Melalui Penerapan Model Pembelajaran Kooperatif Tipe Buzz Group Dan Konvensional Pada Materi Sistem Periodik Unsur Utarid, Sri; Sakung, Jamaluddin; Ratman, Ratman
Jurnal Akademika Kimia Vol 4, No 1 (2015)
Publisher : Universitas Tadulako

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Abstract

Many efforts have been done in order to increase the quality of education. One of them is to improve the instructional process. The purpose of this research was to find out the difference of the grade X student’s learning outcomes at SMA Negeri 1 Marawola through the application of cooperative learning of buzz group type and conventional one on the topic of periodic table. The population was the grade X students in the academic year of 2013/2014. The samples were 25 grade XB students as the experimental group (buzz group typpe instruction) and 25 grade XA students as the control group (conventional instruction). The data were collected by using the test on the element periodic system. The testing of the research data was carried out by the t-test statictic analysis of two parts with prerequisite testing: normality and homogenity. It was obtained that the average scores of the experimental group and the control group that is 76.2 and 73.4. Based on the hypothesis analysis with to use statistic t-test it was obtained that tcalculated = 2.89 and ttable = 2.02 on the α = 0.05. this means that H1 was accepted and H0 was rejected, for the the tcalculated was in the H0 rejection. This indicates that there is a difference of the student’s learning outcomes instructed by the cooperative learning of buzz group type and the conventional one at SMA Negeri 1 Marawola.
Co-Authors Achmad Ramadhan Afadil Agustin Tiwow Agustina M., Renni Ahyar, Aditya Kurniawan Amalia, Maryam Amran Rede Anang Wahid M.Diah Andi Imrah Dewi ani ani Ardiansyah Asmaul Mufidah Asrini Asrini Azizah Azizah Azzajjad, Muhammad Fath Basrudin, Basrudin Berlin, I Dewa Gede Cresna, Cresna Daud Karel Walanda Desman H. Seasi Dewi Satria Ahmar Dewi Tureni Endang Sutriani Esterlina Marpaung, Meida Firman P Guslan Guslan Hamdiana, Hamdiana Hanisa, Siti Hasrida Jabir Hayyatun Mawaddah Hikmawandari, Hikmawandari I Gusti Ngurah Antaryama I Ketut Suada I Made Tangkas Ikran, Ikran Irwan Irwan Ismail Ismail Jamaludin M Sakung Jannah, Nif’atul Kalsum A. M. Tobuali Karmila Langanawa Kasmudin Mustapa Kifli, Moh. Laparmin, Laparmin Lilies N Tangge Lumbantobing, Ria Magfirah, Magfirah Maryam Maryam Masrah Masrah Mbosisi, Sifra Bertin Melyani Sari Sitepu, Melyani Sari Merionto Soilo Mery Napitupulu Minarni Rama Jura Miswan Miswan Moede, Fika Herlina Mohammad Jamhari Mono, Mono Muhamad, Sirhan Muhammad Agus Muljanto Muslimah Muslimah Najamuddin Laganing Nur Rahmawati Nur wahidah Nurdin Rahman Nurida, Nurida NURLIANA NURLIANA Nurmin Nurmin Nurwijayanti Oce Oce Permata Fonna Purnama Ningsih Purnama, Ririn Purniati, Ni Ketut Rahayu, Enny Rahmawati, Rahmawati Ramlah Ramlah Reny, Reny Reskywanti, Reskywanti Resni Taung Rewa, Zakiyah S. Risma, Iga Rismawati Rismawati Risnayanti, Risnayanti Rizwan, Mohd. Rosita Rosita Roswita Roswita Sabata, Nurlaela Samsidar Samsidar Sarni Djasa Satriani, Dewi Setianingsih, Rahmadiana Siang Tandi Gonggo Siti Hawa Siti Nuryanti Solfarina, Solfarina Sri Mariani Sri Mulyani Sabang Sri Wahyuni Sri Winarti Durandt Sumarni, Wiwin Suparmajid, Armin H. Timang, Selfiana Imu Umra Hi. A. Ambai Utarid, Sri Virgianti Pulukadang, Sri Hastuti Wardatul Jannah, Wardatul Yesnain Yesnain Yulianti, Selvi Yulinda, Lika Yusdin Gagaramusu Yusuf Kendek Paluin