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All Journal Jurnal Natur Indonesia Chemica: Jurnal Ilmiah Kimia dan Pendidikan Kimia Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Akademika Kimia Jurnal Gizi Kerja dan Produktivitas Mattawang: Jurnal Pengabdian Masyarakat Media Eksakta Jurnal Akademika Kimia Sovereign: International Journal of Law Aurelia: Jurnal Penelitian dan Pengabdian Masyarakat Indonesia Jurnal Banua Oge Tadulako Jurnal Akademika Kimia

Tahril

Program Studi Pendidikan Kimia, Universitas Tadulako, Indonesia

Author-ID : 206097

Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Education Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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Synthesis and Characterization of Activated Carbon from Waste Compedak Fruit (Artocarpus Champeden) Activated H3PO4 as Adsorbent of Methylene Blue Catherina Bijang; Matheis F. J. D. P. Tanasale; Dewi Sri; Tahril Tahril; Thamrin Azis
Jurnal Akademika Kimia Vol. 11 No. 1 (2022)
Publisher : Universitas Tadulako

Synthesis of activated carbon from cempedak peel waste is carried out to utilize biomass waste. This study aimed to synthesize and characterize activated carbon from cempedak peel waste. The synthesis was carried out by chemical activation using phosphoric acid with a dry impregnation ratio of 1:4 (g sample:g H3PO4). Samples impregnated for 24 hours were then heated at 250℃—and then calcined at 350℃ and 450℃. The XRD and FTIR characterization results indicated that the activated carbon obtained had an amorphous structure and the activated carbon obtained had hydroxyl, carbonyl, and carboxylic groups. Activated carbon with the highest yield was obtained at a temperature of 350, namely 43%. The results of determining the water content of activated carbon obtained are 8.36% at 350 0C and 7.1% at 450 ℃. The value of water content and ash content of activated carbon from the skin of this cempedak fruit has met the Indonesian National Standard (SNI 06-3730-1995). The best-activated carbon yield was at a calcination temperature of 450, with the percentage of adsorption efficiency on methylene blue of 98.88%.

Peta Asam Lemak Berbagai Spesies Lamun (Seagrass) di Pantai Kabupaten Donggala Tahril .; Alfian Noor; Paulina Taba; Nursiah La Nafie
Chemica: Jurnal Ilmiah Kimia dan Pendidikan Kimia Vol 10, No 1 (2009)
Publisher : Jurusan Kimia FMIPA UNM

ABSTRAK Telah dilakukan identifikasi kuantitatif jenis-jenis asam lemak lamun dari spesies Thalassodendron ciliatum, Cymodocea rotundata, Cymodocea serrulata, Thalassia hemprichii, dan Enhalus acoroides. Analisis lemak contoh yang diambil di perairan kabupaten Donggala ini dilakukan dengan metode soxhlet dan analisis asam lemak menggunakan metode GC. Ternyata diperoleh variasi kandungan lemak antara 0,27 % - 1,01 %, sementara konsentrasi asam lemak jenuh yang ditemukan bervariasi antara 4,39 % - 8,03 %, asam lemak tak jenuh bervariasi antara 4,48 % - 18,39 %, dan omega 3 (EPA) bervariasi antara 0,27 % - 1,24 %. Hasil di atas, jika digabungkan bersama hasil analisis protein, fosfat, dan mineral dapat menjadi dasar untuk memperkirakan status kesuburan lamun. Kata kunci : Lamun, asam lemak, ABATRACT The quantitative analyses of fatty acids various was conducted from the seagrass Thalassodendron ciliatum, Cymodocea rotundata, Cymodocea serrulata, Thalassia hemprichii, and Enhalus acoroides speciess. The sampel takken from Donggala coast is analyses as the soxhlet method and the Gas Chromatography. The result obtained obstetrical variation of fatty are vary among 0,27 - 1,01 %, for a while concentration of saturated fatty acids are vary among 4,39 - 8,03 %, unsaturated fatty acid are vary among 4,48 - 18,39 %, and omega 3 (EPA) are vary among 0,27 - 1,24 %. The result is it is joined with the protein, phosphate, and mineral analyses result can become basic for estimate the fertility status the sea grass. Keyword: Sea grass, fatty acid

Identifikasi Senyawa Metabolit Sekunder Pada Batang dan Daun Lamun (Seagrass) di Teluk Palu Elsa RN Taminggu; Tahril Tahril
Media Eksakta Vol 18 No 1 (2022)
Publisher : Universitas Tadulako

This study aims to determine the content of secondary metabolites in the stems and leaves of seagrass (Seagrass) found in Palu Bay. The method used in this study is the screening method. The samples used were stems and leaves of seagrass species Enhalus acoroides, Thalasia hemprichii, and Sringodium isotifolium. The types of compounds identified in this study were alkaloids, flavonoids, steroids, triterpenoids, saponins, and tannins. Before the qualitative test on the sample, maceration was carried out for 24 hours with ethanol as a solvent. The results obtained were the type of seagrass Enhalus acoroides, the stems contain alkaloids, flavonoids, triterpenoids, and tannins, the leaves contain alkaloids, flavonoids, steroids, saponins, and tannins. Syringodium isoetifolium seagrass contains alkaloids, titerpenoids, saponins, and tannins, the leaves contain alkaloids, steroids, and tannins. Seagrass Thalasia hemprichii contains alkaloids, flavonoids, titerpenoids, and tannins, the leaves contain alkaloids, flavonoids, steroids, and tannins. Thalasia hemprichii and Sringodium isotifolium.

Equilibrium and Adsorption Kinetic Study of Metal Ni(II) using Persimmon Tannin Gel La O. Ahmad; Ulfa H. Syam; Laode A. Kadir; Nohong Nohong; Muh Natsir; Nasriadi Dali; Imran Imran; Tahril Tahril; Thamrin Azis
Jurnal Akademika Kimia Vol. 11 No. 2 (2022)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2022.v11.i2.pp111-116

Heavy metal concentration exceeding the threshold amount is hazardous to the environment, so it needs some treatment. The study aimed to know the capacity and kinetics of adsorption. This study used the adsorption method to remove the heavy metal ion Ni(II) using persimmon tannin gel. Influences of time contact, pH, and ion concentration in the adsorption process were also investigated. Results showed optimum adsorption at 60 minutes of time contact and pH 5. Variation of concentration made the adsorption decrease as metal ion Ni(II) concentration increased. The maximum adsorption capacity was 23.14 mg/g by using pseudo-second-order adsorption kinetic model.

The Influence of Problem-Based Learning Model Learning Assisted by Science Media Kits on Student Learning Outcomes in Hydrocarbons Ulfiana Ulfiana; Minarni R. Jura; Tahril Tahril
Jurnal Akademika Kimia Vol. 11 No. 2 (2022)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2022.v11.i2.pp105-110

This study aimed to determine the effect of the problem-based learning model assisted by KIT IPA media on student learning outcomes in hydrocarbon material in class XI IPA SMA N 6 Palu. The type of research used was Pre-experiment with Alternative Treatment design, Post-Test-Only with nonequivalent Groups Design. Sampling was done using the purposive sampling technique with samples consisting of class XI IPA 4 as experimental class I and class XI IPA 2 as experimental class II. The research instruments were the learning outcomes tests, RPP, and observation sheets previously validated in theory and empirically. Testing student learning outcomes used t-test analysis two (two parties) with a prerequisite test: normality and homogeneity tests, then the t-test hypothesis test (two parties) was applied. Based on the research results and analysis of the research data, the value of student learning outcomes in the post-test of the experimental class I was 65.7 and for the exploratory class II was 59.9, while the standard deviation was 10.4 and 9.7, respectively. The results of the statistical testing of hypothesis testing obtained tcount> ttable or 2.60> 1.70 so that H1 was accepted. It means that the learning model of problem-based learning instruction assisted by KIT IPA media affects the learning outcomes of students of SMA Negeri 6 Palu.

Analisis Kandungan Asam Lemak Ikan Sidat (Anguilla Bicolor) Asal Danau Poso Yulvani Toiba; Sri Mulyani Sabang; Tahril Tahril; Sitti Aminah
Media Eksakta Vol 18 No 2 (2022)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/me.v18i2.2349

Analysis of Fatty Acid Content of Eel (Anguilla Bicolor) from Lake Poso. Skipsi, Chemistry Education Study Program, Department of Mathematics and Natural Sciences Education, Tadulako University, Palu. Advisor Sri Mulyani Sabang. The purpose of this study was to determine the fatty acid content of eel (Anguilla Bicolor) originating from Lake Poso. The method used to analyze the fat content was the shoxletation extraction method. The results showed that the fat content of eel (Anguilla Bicolor) from Lake Poso = 1.94%. Meanwhile, to determine the fatty acid composition of eel, it was analyzed using gas chromatography with the composition of fatty acids found in eel (Anguilla Bicolor) including saturated fatty acids 51.89%, monounsaturated fatty acids = 42.68%, and unsaturated fatty acids. plural saturation = 7.99%. Eel has many benefits for the human body, eel meat is rich in protein, vitamins, fatty acids, and micro elements (minerals). The content of vitamins in eels include vitamin A, vitamin B1, and vitamin B2, as well as micro elements such as Zn (Zink). In addition to vitamins and micro elements, eels also contain unsaturated weak acids needed by the body, including omega fatty acids which are useful for the development of children's brain cells.

Analisis Kadar Vitamin A, C dan E pada Biskuit dari Formulasi Tepung Labu Siam (Sechium edule) dan Tepung Kacang Hijau (Vigna radiata L.) Reynaldi Tandi; Sri Hastuti; Tahril Tahril; Sri Mulyani
JURNAL BANUA OGE TADULAKO Vol 1 No 1 (2021)
Publisher : Universitas Tadulako

Chayote and green beans are classified as plants that contain various vitamins. Vitamins in the human body can function as antioxidants and metabolic regulators. Management of chayote and green beans into flour is still not implemented. This study aims to determine the levels of vitamins A, C and E contained in biscuits from the formulation of chayote flour and mung bean flour. Determination of levels of vitamins A, C and E in biscuits using UV-Vis spectrophotometric method. The results of this study indicate that biscuits with a ratio of 0:100% (0:200 grams) contain 0.0063 mg/100g of vitamin A, 12.740 mg/100g of vitamin C and 0.0026 mg/100g of vitamin E; a ratio of 25:75% (50:150 grams) containing 0.0044 mg/100g of vitamin A, 13,406 mg/100g of vitamin C and 0.0019 mg/100g of vitamin E; a ratio of 50:50% (100:100 grams) containing 0.0038 mg/100g of vitamin A, 14,826 mg/100g of vitamin C and 0.0033 mg/100g of vitamin E; a ratio of 75:25% (150:50 grams) containing 0.0071 mg/100g of vitamin A, 15.397 mg/100g of vitamin C and 0.0040 mg/100g of vitamin E; the ratio of 100:0% (20:0 gram) contains 0.0046 mg/100g of vitamin A, 14,258 mg/100g of vitamin C and 0.0039 mg/100g of vitamin E. The results of this study are expected to help the community in cultivating and processing chayote and green beans into biscuit flour which is rich in vitamin content.

The Implementation of Mind Mapping on Chemical Bond Learning Assisted by Information Technology towards the Students’ Learning Outcomes in Class X MIA 1 at SMA Negeri 1 Sindue Awanda Awanda; Tahril Tahril; Minarni R. Jura
Jurnal Akademika Kimia Vol. 9 No. 3 (2020)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2020.v9.i3.pp172-175

This study aimed to determine the influence of the implementation of mind mapping on learning of chemical bonding assisted with information technology toward learning outcomes of students in the Class X1 Science at SMA 1 Sindue. This study was a quasi-experiment with non-randomized pretest-posttest control group design. Sampling was based on special consideration (purposive sampling) with a sample of students of class X1 Science as the experimental class and class X2 Science as the control class. The instrument of this study was a test of learning outcomes. Data of the results was tested using statistical analysis of one-party t-test with prerequisite tests of normality and homogeneity tests. The data analysis obtained an average score of learning outcomes in the experimental class was 77.12 and in the control class was 67.6. Based on the hypothesis test with the t-test statistic of two parties obtained tcount of 10.89 and ttable of 1.95 at α 0.05. In this case, H1 was accepted and H0 was rejected because tcount was in the area of H0 rejection. This showed that there were differences in students’ learning outcomes through the implementation of mind mapping and conventional in learning of students in 10th grade at SMA 1 Sindue.

Misconception Reduction by Implementing Contextual Teaching and Learning (CTL) Approach on Salt Hydrolysis Material in Grade XI at SMA 1 Palasa Moh. Raisul; Tahril Tahril; Afadil Afadil
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.pp78-86

Misconception is a conception of someone who is not in accordance with the scientific concept recognized by experts. Student’s who experience misconceptions will make mistakes in understanding concept’s and occur continuously. This study aimed to determine the percentage of reduction of students’ misconception in grade XI SMA 1 Palasa on salt hydrolysis by implementing contextual teaching and learning (CTL) approach. This study was a quantitative descriptive study with the number of samples of 2 classes, that’s Class XI Science A consisted of 22 students, and Class XI Science B consisted of 22 students. The instrument test was a reasoned multiple choice test accompanied by a certainty of response index (CRI) consisting of 20 items. The results showed that the percentages of the average reduction of students’ misconceptions in the class XI science A and in the class XI science B on salt hydrolysis with contextual teaching and learning (CTL) approach were 19.6 and 9.8%, respectively.

Antioxidant Activity Test of Ethanol and Water Extracts of Celery (Apium graveolens L.) Nurmiati Nurmiati; Siti Nuryanti; Tahril Tahril
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.pp93-101

This study aimed to determine the antioxidant activity of ethanol and water extracts of celery (Apium graveolens L.). Antioxidant activity test in this study used DPPH (2,2-diphenyl-1-picrylhydrazine) as a source of free radicals and vitamin C as a positive control. The antioxidant activity of celery extracts was analyzed using a UV-VIS spectrophotometer. Celery powder was extracted by firstly the maceration method using different solvents (ethanol and water) and secondly with the decoction method using water solvents. Celery extract was tested for antioxidant activity with various concentrations of 20, 40, 60, and 80 ppm. The results obtained that water extract (maceration) had a very strong antioxidant power with 23.713 ppm of IC50 values, for ethanol extract (maceration) had a strong antioxidant power with 59.492 ppm of IC50 value, water extract (dekok) had also a very strong antioxidant with 77.446 ppm of IC50 value, and vitamin C had a very strong antioxidant power with 15.631 ppm of an IC50 value. Based on the IC50 value obtained, the water extract by the maceration method was very good to be used as a source of natural antioxidants, because it had a very strong antioxidant activity value which was equivalent to vitamin C.

Co-Authors Afadil Agustin Tiwow Alfian Noor Alfian Noor Arwansyah Arwansyah Arwansyah Awanda Awanda Bijang, Catherina M. Budi Rahayu, Budi Catherina Bijang Daini, Dinda Ulan Daud Karel Walanda Dewi Sri Elsa RN Taminggu Fransina, Eirene G. Hasanela, Nurani Hijrawati Hijrawati Ika ika Imran Imran Jamaludin M Sakung Joris, Shielda N. Kasmiati Kasmiati La O. Ahmad Laode A. Kadir Matheis F. J. D. P. Tanasale Maulidiyah Maulidiyah Meilan Kristina Pogoa Mery Napitupulu Minarni Rama Jura Moh. Raisul Muh Natsir Muh. Nurdin, Muh. Muhammad Agus Muljanto Muslia, Wa O. Muzakkari, Muhammad Z. Nasriadi Dali Nohong Nohong Nur H. Wahyuni Nurmiati Nurmiati Nursiah La Nafie Nursiah La Nafie Paulina Taba Paulina Taba Reynaldi Tandi Siti Nuryanti Sitti Aminah Sitti Rahmawati Somang, Olivia Inrawati I. Sri Hastuti Sri Mulyani Sri Mulyani Sabang Suherman Suherman Tehuayo, Ahmadin THAMRIN AZIS Ulfa H. Syam Ulfiana Ulfiana Winarsyih Muhidin Wiwik Handayani Yulvani Toiba

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