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Pengaruh Kombinasi dan Rasio Pelarut Terhadap Hasil Ekstraksi Minyak dari Serabut Kelapa Sawit Rozi, Fachrul; Abram, Paulus Hengky; Diah, Anang Wahid M.
Jurnal Akademika Kimia Vol 7, No 3 (2018)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (677.148 KB)

This study aimed to determine the combinations and ratios of appropriate solvents to obtain the optimal mass of palm oil. Extracting the oil from palm fibers was conducted using soxletation method. Extraction is a way to get oil in a high amount and good quality by using an appropriate solvent. The weight of oils obtained from the volume ratios variable of solvents at 100:0, 70:30, 50:50, 30:70, and 0:100 were 0.446 Â± 0.063 g, 0.379 Â± 0.022 g, 0.295 Â± 0.012 g, 0.276 Â± 0.045 g, and 0.183 Â± 0.054 g, respectively. This study showed the combination of the types and ratios of solvents toward extraction of oil, and the optimal oil mass was produced from n-hexane solvent.

Pengaruh Konsentrasi Ragi Tape (Saccharomyces Cerevisiae) terhadap Kadar Bioetanol Pada Proses Fermentasi Biji Alpukat (Persea Americana Mill) Rizwan, Mohd.; Diah, Anang Wahid M.; Ratman, Ratman
Jurnal Akademika Kimia Vol 7, No 4 (2018)
Publisher : Universitas Tadulako

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Avocado seed contains high level of starch and it can be used as one of the raw materials for bioethanol. This study aimed to determine the influence of variation concentration of tape starter toward bioethanol level in the fermentation process of avocado (persea americana Mill.) seed. Some process on this research were delignification with 4% NaOH, hydrolysis with 12% HCl, and fermentation with various concentrations of yeast tape (saccharomyces cerevisiae) ie 10%, 20% and 30% of substrate volume for 5 days. Bioethanol level was determined by using alcoholmeter. The highest bioethanol level was obtained in the addition of yeast tape as much as 30% of substrate that was an equal to 32.65% with density of 1.0029 g/mL.

Application of STAD Type Cooperative Learning Models Integrated With Camtasia Studio Presentation Media on Student's Motivation and Learning Outcomes Class XI MIPA SMAN 1 Sigi Biromaru Wagiman, Saumadin; Walanda, Daud K.; Diah, Anang Wahid M.
Jurnal Riset Pendidikan MIPA Vol. 2 No. 1 (2018)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j25490192.2018.v2.i1.pp64-74

This research aims to determine the effect of student motivation and outcomes learning through the application of cooperative learning model type of STAD combined with presentation media camtasia studio in class XI MIPA at SMAN 1 Sigi Biromaru. Subject of this research was two classes of XI MIPA1 as much 22 students as the experimental class and XI MIPA2 as much 22 students as a control class determined by Purposive Random Sampling. Data was collected use questionnaire instrument of learning motivation and learning result test. Testing data of research result using t-statistical analysis of t-test (Independent Sample t-Test) with prerequisite test that is normality test and homogeneity test. The average score of students learning motivation in the experimental class was 81 and the average score of students learning motivation in the control class was 67. The average score of students learning outcomes in the experimental class was 85 and the average score of students learning outcomes in the control class was 74. Based on the hypothesis analysis with t-test motivation of learning motivation obtained value tcount = 7.670 and it was located in the region of rejection of H0 between -2.018 and 2.018. Hypothesis analysis with t-test result statistic obtained value tcount = 8.056 and it was located in the region of rejection of H0 between -2,018 and 2.018. The result shows that there is effect of application cooperative learning model type of STAD combined with media presentation of studio camtasia toward the student motivation and outcomes learning in class XI MIPA at SMAN 1 Sigi Biromaru.

Uji Aktivitas Antioksidan Ekstrak Buah Kersen (Muntingia calabura L.) Menggunakan 1,1-Difenil-2-Pikrilhidrazil Zela Zela; Anang Wahid Muhammad Diah
Media Eksakta Vol 17 No 2 (2021)
Publisher : Universitas Tadulako

Kersen, also known as Muntingia calabura L. is a fruit with numerous health benefits that can be ingested instead of medication. The goal of this study was to see how effective the extract Muntingia calabura L. was as an antioxidant. This study used DPPH (2,2-diphenyl-1-picrylhydrazyl) as a source of free radicals and vitamin C as a positive control to measure antioxidant activity. A UV-VIS spectrophotometer was used to determine the antioxidant activity of Muntingia calabura L. extract. The fruit powder of Muntingia calabura L. was extracted using the maceration process using ethanol as a solvent. The antioxidant activity of the extract was next examined at various concnetration of 20, 40, 60, and 80 ppm. Muntingia calabura L. extract had a strong antioxidant power with an IC50 value of 69.662 ppm, while vitamin C had also a strong antioxidant power with an IC50 value of 79.615 ppm, according to the findings. Muntingia calabura L. fruit extract is a good source of natural antioxidants, according to the IC50 value, because it has a high antioxidant activity value.

Application of Learning Models of Concept Attainment and Problem Based Learning Against High School Students' Creative Thinking Ability on Redox Material Lisa N. M. Sakaria; Kasmudin Mustapa; Anang Wahid M. Diah
Jurnal Akademika Kimia Vol. 10 No. 1 (2021)
Publisher : Universitas Tadulako

Creative thinking is thinking to determine the new relationships between things, such as finding new solutions to a problem, finding new systems, and finding new artistic forms. This study aimed to analyze students' creative thinking ability by applying concept attainment and problem-based learning models in the redox material of class X SMA Negeri 9 Palu. This type of research was pre-experimental with the static group pre-test post-test design. This study used 2 classes, namely class X MIA 1 as experimental class 1 (n = 22) and class X MIA 2 as experimental class 2 (n = 22). Data analysis of students’ creative thinking was performed using the test given after learning (post-test). The results of this study indicated that the percentage value of the average creative thinking of the experimental class 1 students was 74.5% with the high category and the achievement of aspects of creative thinking of students with the percentage from highest to lowest in the originality aspect were 76.7%, flexibility aspect was 74.1%, and the fluency aspect was 72.7%. While the average percentage of experimental class 2 was 76.6% with the high category and the achievement of aspects of creative thinking of students with the highest to lowest percentage of the fluency aspect was 84.5%, the originality aspect was 75.1%, and the flexibility aspect was 70.2%. The results of this study can be concluded that the application of the Concept Attainment and Problem Based Learning models were very good in creative thinking skills of students class in SMA Negeri 9 Palu on Redox material.

Citric Acid Extraction in Citrus hystrix Peels as an Alternative Material for Reducing Water Hardness Ni Nyoman Suciani; Irwan Said; Anang Wahid M. Diah
Jurnal Akademika Kimia Vol. 10 No. 1 (2021)
Publisher : Universitas Tadulako

Water hardness will have a destructive impact if consumed in a long time. Hard water contains high calcium contents, including inorganic calcium. The accumulation of calcium in the body at a specific time causing kidney stones, and some will settle in the blood that causing calcification which can be fatal to health. An alternative is needed to reduce the level of water hardness. This study aimed to determine the effect of using citric acid on citrus hystrix peels on water hardness. Citric acid was obtained through the maceration extraction method from citrus hystrix. The citric acid extract was made into several concentrations of 50, 100, and 150 ppm then added to hard water. Determination of decreased total water hardness after adding citric acid used method complexometry titration. The results of the analysis show that citric acid is able to reduce water hardness of the sample water from Palu city area.

PENDAMPINGAN AKSELERASI IMPLEMENTASI MBKM KOMUNITAS DKM DI UNIVERSITAS PENDIDIKAN MUHAMMADIYAH SORONG Yanuar Dwi Prastyo; Lien Herlina; Agus Muji Santoso; Alia Bihrajihant Raya; Nanang Wahyudin; Anggraeni Dyah Sulistiowati; Evi Rinata; Anang Wahid Muhammad Diah; Agus Syahrani; Rima Herlina Setiawati Siburian; Willy Bachtiar; Hendy Setiawan; Finda Meyditia; Ronny Lesmana; Arifin Dwi Saputro; Akim Manaor Hara Pardede
Jurnal Informatika Kaputama (JIK) Vol 6, No 2 (2022): Volume 6, Nomor 2 Juli 2022
Publisher : STMIK KAPUTAMA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.1234/jik.v6i2.1313

Komunitas Duta Kampus Merdeka (DKM) 2022 memiliki sifat (nature) go-to-person dalam melaksanakan tugasnya untuk mengakselerasi implementasi kebijakan Merdeka Belajar Kampus Merdeka (MBKM) sesuai dengan spirit transformasi pendidikan tinggi. Oleh karena itu, DKM diharapkan mampu berperan sebagai problem shooter yaitu mampu menjawab dan membantu memecahkan masalah tentang implementasi program Kampus Merdeka baik di lingkungan Perguruan Tinggi (PT) maupun di PT sekitar. Salah satu upaya untuk mengoptimalkan peran dan nature DKM serta membantu penyelesaian masalah dan mengakselerasi implementasi Kampus Merdeka di perguruan tinggi, maka DKM Leads menjalin kerjasama dengan Lembaga Layanan Pendidikan Tinggi (LLDIKTI) untuk melaksanakan kegiatan kolaborasi. Kolaborasi dilaksanakan dalam bentuk Pendampingan Akselerasi Implementasi MBKM yang bertujuan meningkatkan kapasitas DKM sebagai problem shooter dengan solusi yang disampaikan secara on the spot. Selain itu, kegiatan tersebut juga bertujuan untuk meningkatkan sinergi dalam memetakan dan memberikan rekomendasi tematik bagi perguruan tinggi dan program studi yang masih memiliki kendala dalam implementasi Kampus Merdeka. Melalui Pendampingan Akselerasi Implementasi MBKM, DKM dan LLDIKTI dapat membantu mengakselerasi implementasi MBKM secara sistemik dan komprehensif.

Uji Aktivitas Antioksidan Ekstrak Etanol Daun Balaroa (Kleinhovia hospita L.) Menggunakan DPPH Uci Edy; Supriadi Supriadi; Anang Wahid Muhammad Diah; Minarni Rama Jura
Media Eksakta Vol 19 No 1 (2023)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/me.v19i1.1070

To test the antioxidant activity of the ethanol extract of balaroa leaves (Kleinhovia hospita L) using the compound DPPH (2,2-diphenyl-1-pikrilhidrazil) as a provider of free radicals. This study aims to describe the strong, moderate or weak antioxidant activity of balaroa leaf extract. Balaroa leaf powder was extracted by maceration using absolute ethanol as a solvent. Testing the antioxidant activity of balaroa leaf extract was carried out with various concentrations of 20 ppm, 40 ppm, 60 ppm, 80 ppm, and 100 ppm. The antioxidant activity of balaroa leaf extract was analyzed using a UV-Vis spectrophotometer at a wavelength of 517 nm. The results obtained showed that the IC50 value of balaroa leaf extract was 145.211 ppm while the vitamin C reference solution was 4.909 ppm. Based on the IC50 value data, it can be determined that the ethanol extract of balaroa leaves is a moderate antioxidant.

PENDAMPINGAN AKSELERASI IMPLEMENTASI MBKM KOMUNITAS DKM DI UNIVERSITAS PENDIDIKAN MUHAMMADIYAH SORONG Yanuar Dwi Prastyo; Lien Herlina; Agus Muji Santoso; Alia Bihrajihant Raya; Nanang Wahyudin; Anggraeni Dyah Sulistiowati; Evi Rinata; Anang Wahid Muhammad Diah; Agus Syahrani; Rima Herlina Setiawati Siburian; Willy Bachtiar; Hendy Setiawan; Finda Meyditia; Ronny Lesmana; Arifin Dwi Saputro; Akim Manaor Hara Pardede
Jurnal Informatika Kaputama (JIK) Vol 6 No 2 (2022): Volume 6, Nomor 2, Juli 2022
Publisher : STMIK KAPUTAMA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59697/jik.v6i2.122

Komunitas Duta Kampus Merdeka (DKM) 2022 memiliki sifat (nature) go-to-person dalam melaksanakan tugasnya untuk mengakselerasi implementasi kebijakan Merdeka Belajar Kampus Merdeka (MBKM) sesuai dengan spirit transformasi pendidikan tinggi. Oleh karena itu, DKM diharapkan mampu berperan sebagai problem shooter yaitu mampu menjawab dan membantu memecahkan masalah tentang implementasi program Kampus Merdeka baik di lingkungan Perguruan Tinggi (PT) maupun di PT sekitar. Salah satu upaya untuk mengoptimalkan peran dan nature DKM serta membantu penyelesaian masalah dan mengakselerasi implementasi Kampus Merdeka di perguruan tinggi, maka DKM Leads menjalin kerjasama dengan Lembaga Layanan Pendidikan Tinggi (LLDIKTI) untuk melaksanakan kegiatan kolaborasi. Kolaborasi dilaksanakan dalam bentuk Pendampingan Akselerasi Implementasi MBKM yang bertujuan meningkatkan kapasitas DKM sebagai problem shooter dengan solusi yang disampaikan secara on the spot. Selain itu, kegiatan tersebut juga bertujuan untuk meningkatkan sinergi dalam memetakan dan memberikan rekomendasi tematik bagi perguruan tinggi dan program studi yang masih memiliki kendala dalam implementasi Kampus Merdeka. Melalui Pendampingan Akselerasi Implementasi MBKM, DKM dan LLDIKTI dapat membantu mengakselerasi implementasi MBKM secara sistemik dan komprehensif.

Application of Learning Models of Concept Attainment and Problem Based Learning Against High School Students' Creative Thinking Ability on Redox Material Lisa N. M. Sakaria; Kasmudin Mustapa; Anang Wahid M. Diah
Jurnal Akademika Kimia Vol. 10 No. 1 (2021)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2021.v10.i1.pp9-14

Creative thinking is thinking to determine the new relationships between things, such as finding new solutions to a problem, finding new systems, and finding new artistic forms. This study aimed to analyze students' creative thinking ability by applying concept attainment and problem-based learning models in the redox material of class X SMA Negeri 9 Palu. This type of research was pre-experimental with the static group pre-test post-test design. This study used 2 classes, namely class X MIA 1 as experimental class 1 (n = 22) and class X MIA 2 as experimental class 2 (n = 22). Data analysis of students’ creative thinking was performed using the test given after learning (post-test). The results of this study indicated that the percentage value of the average creative thinking of the experimental class 1 students was 74.5% with the high category and the achievement of aspects of creative thinking of students with the percentage from highest to lowest in the originality aspect were 76.7%, flexibility aspect was 74.1%, and the fluency aspect was 72.7%. While the average percentage of experimental class 2 was 76.6% with the high category and the achievement of aspects of creative thinking of students with the highest to lowest percentage of the fluency aspect was 84.5%, the originality aspect was 75.1%, and the flexibility aspect was 70.2%. The results of this study can be concluded that the application of the Concept Attainment and Problem Based Learning models were very good in creative thinking skills of students class in SMA Negeri 9 Palu on Redox material.

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