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All Journal Jurnal Teknologi Industri Pertanian MEDIA MEDIKA INDONESIANA Jurnal AGROTEKNOLOGI Journal of Biomedicine and Translational Research Erudio: Journal of Educational Innovation agriTECH Jurnal Agroindustri WARTA AGRITEPA: Jurnal Ilmu dan Teknologi Pertanian EduChemia: Jurnal Kimia dan Pendidikan Alotrop Jurnal Pendidikan dan Ilmu Kimia Jurnal Bioteknologi & Biosains Indonesia (JBBI) PENDIPA Journal of Science Education JMM (Jurnal Masyarakat Mandiri) Dharma Raflesia : Jurnal Ilmiah Pengembangan dan Penerapan IPTEKS IJORER : International Journal of Recent Educational Research Jurnal AGRISEP: Kajian Masalah Sosial Ekonomi Pertanian dan Agribisnis Andromeda: Jurnal Pengabdian Masyarakat Rafflesia al Kimiya : Jurnal Ilmu Kimia dan Terapan
Budiyanto Budiyanto
Universitas Bengkulu
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Social Sciences Other

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Produksi Biofuel Dari Limbah Cpo Dengan Katalis Berbasis Titanium Oksida Dan Implementasinya Pada Pembelajaran Kimia Nurlia Latifah; Agus Sundaryono; Rina Elvia
PendIPA Journal of Science Education Vol 1, No 1 (2017): october
Publisher : University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (205.486 KB) | DOI: 10.33369/pendipa.1.1.19-24

Abstract

Conversion of CPO waste into biofuel is one of the efforts to find alternative energy to overcome Indonesia's energy crisis. The resulting methyl ester was further processed into biofuel by cracking process with Ni/TiO2 and Co/TiO2 catalysts at temperature > 350oC for 2.5 hours followed by distillation. Educational research was done by doing the learning process by using biofuel module. The optimum biofuel yield was obtained from cracking methyl ester with 5% Ni/TiO2 catalyst and 3% Co/TiO2 catalyst respectively of 66,67 and 61,90%. The physical and chemical properties of cracked biofuels with Ni/TiO2 and Co/ TiO2 catalysts have complied with ASTM standards for biofuel except acid numbers. There is an increase in student learning outcomes before and after using the module. 
Modul Pembelajaran Pemanfaatan Kulit Durian Untuk Meningkatkan Kemampuan Kognitif Siswa Sekolah Menegah Pertama (SMP) Yulia Suparti; M. Farid; Agus Sundaryono
PendIPA Journal of Science Education Vol 4, No 3 (2020): JULY - OCTOBER
Publisher : University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/pendipa.4.3.14-19

Abstract

Penelitian ini bertujuan untuk: 1) mengetahui besarnya arus listrik pada limbah ekstrak kulit durian, 2) mengetahui besarnya Beda Potensial listrik pada limbah ekstrak kulit durian, 3) mengetahui besarnya listrik dinamis yang dihasilkan oleh limbah ekstrak kulit durian, mengetahui tingkat kualitas modul yang dirancang, 4) mengetahui peningkatan kemampuan kognitif siswa dengan menggunakan modul pada pokok bahasan Listrik Dinamis di kelas IX SMPN 11 Kota Bengkulu, dan 5) mengetahui perbedaan hasil belajar kognitif siswa pada kelompok tinggi, sedang dan rendah. Penelitian ini adalah Penelitian ini adalah merancang modul pembelajaran menggunakan limbah kulit durian sebagai sumber energi listrik pada pembelajaran listrik dinamis untuk meningkatkan kemampuan kognitif siswa kelas IX.C SMPN 11 Kota Bengkulu. Metode yang digunakan Discovery learning dengan menerapkan pembelajaran HOTS. Hasil penelitian menunjukkan: 1) Nilai rata-rata kuat arus listrik yang dihasilkan dari ekstrak kulit durian menggunakan anoda Tembaga (Cu), Aluminium (Al), dan Besi (Fe) secara berurutan sebesar 1.175,2778 µA, 5,8911 µA, dan 0,0030 µA, 2) Nilai rata-rata tegangan listrik yang dihasilkan dari ekstrak kulit durian menggunakan anoda Tembaga (Cu), Aluminium (Al), dan Besi (Fe) secara berurutan sebesar 2,2917 Volt, 1,2772 Volt, dan 0,4556 Volt, 3) Nilai rata-rata daya listrik yang dihasilkan dari ekstrak kulit durian menggunakan anoda Tembaga (Cu), Aluminium (Al), dan Besi (Fe) secara berurutan sebesar 4.770,0089 µW, 10,1324 µW, dan 0,0017 µW, 4) Nilai rata-rata energi listrik untuk anoda Tembaga (Cu), Aluminium (Al), dan Besi (Fe) secara berurutan adalah sebesar 47.700,0889 µJ, 101,3232 µJ, dan 0,0169 µJ, 5) Kualitas rancangan modul yang digunakan sebagai bahan pembelajaran listrik dinamis adalah; rata-rata validasi isi sebesar 84,50% dalam katagori valid dan rata-rata validasi grafika sebesar 85,60 dalam katagori sangat valid. Hal ini menyatakan bahwa rancangan modul dapat digunakan sebagai bahan pembelajaran, 6) Terdapat peningkatan kemampuan kognitif siswa pada pokok bahasan listrik dinamis dibuktikan dengan nilai N-gain untuk kelompok tinggi sebesar 0,75 (tinggi), kelompok sedang sebesar 0,46 (sedang), dan kelompok rendah sebesar 0,30 (sedang), dan 7) Terdapat perbedaan hasil belajar kognitif siswa pada kelompok tinggi, sedang dan rendah dibuktikan Fhitung sebesar 23,05 dan Ftabel sebesar 3,34 pada taraf signifikansi 5%. Fhitung> Ftabel, sehingga Ha diterima dan H0 ditolak.
Pembelajaran probing prompting untuk meningkatkan berpikir kritis siswa anggota kelompok ilmiah remaja Megasari Megasari; Agus Sundaryono; M Lutfi Firdaus
PendIPA Journal of Science Education Vol 2, No 2 (2018): june
Publisher : University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/pendipa.2.2.163-169

Abstract

Abstrak Kegiatan ilmiah mahasiswa dapat dilakukan melalui kegiatan ekstrakurikuler Kelompok Ilmiah Remaja (KIR). Anggota KIR diharuskan memiliki keterampilan berpikir kritis dalam mencari topik untuk menulis makalah ilmiah. Salah satu metode pembelajaran yang dapat dilakukan untuk meningkatkan pemikiran kritis siswa KIR adalah dengan mempelajari instruksi yang dibantu oleh video-assisted. Sebuah eksperimen semu dengan desain desain one pretest-posttest dilakukan untuk mengukur tingkat berpikir kritis anggota KIR dengan memberikan pretest sebelum mempelajari probing yang mendorong tes video-aided dan post setelah belajar dorongan video-assisted probing. Analisis data dilakukan dengan menggunakan uji efektivitas dan uji Wilcoxon. Hasil data dengan efek pengukuran nilai efek diperoleh E> 0,8 yang berarti ada peningkatan berpikir kritis sebelum dan sesudah belajar. Uji Wilcoxon diperoleh nilai p (Z) = 0,0344. Nilai p (Z) <0,05 yang berarti kemampuan berpikir kritis siswa meningkat dari pretest ke posttest. Kata kunci: Probing prompting; berpikir kritis; kelompok ilmiah remaja
Dampak Pemberian Ekstrak “Simbagh Utak” (Hydnophytum formicarum) Terhadap Penurunan Kadar Asam Urat Darah pada Mencit (Mus musculus) Jantan Hiperurisemia Gustria Ernis; Dewi Handayani; Agus Sundaryono
PendIPA Journal of Science Education Vol 4, No 2 (2020): MARCH - JUNE
Publisher : University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (431.942 KB) | DOI: 10.33369/pendipa.4.2.94-100

Abstract

One of Bengkulu's local culture is the utilization of medicinal plants by the people of Bengkulu, especially South Bengkulu, namely "Simbagh Utak" (Hydnophytum formicarum) for treating various diseases including Gout. However, they still use naturally, there is no scientific studied. This study was aimed to analyze the effect of “Simbagh Utak” (H. formicarum) on the reduction of serum uric acid levels in hyperuricemia male mice. This study used 25 male mice, that devided into 5 groups. The control group was given pellet feed (G1). We injected the high purine feed treatment per-oral to induce hyperuricemia (Negative control, G2) and then given H. formicarum extract 5.3mg/30gW (G3), 10.2mg/30gW (G4) and 21,2mg/30gW (G5). Uric acid measurements were performed using a digital method with easy touch /GCU. The tubers were extracted with maceration, eluent selection and isolation of the isolated components was carried out using thin layer chromatography and column chromatography. The extraction results were analyzed of functional groups using FTIR. The result showed that “simbagh utak” extract 5.3mg/30gW, 10.2mg/30gW and 21,2mg/30gW could reduced uric acid levels of hyperuricemia male mice 34.1%, 48.0% dan 53.4% respectively. On this basis, we conclude that "Simbagh Utak" extract could reduced levels of uric acid M. musculus males who have experienced a state of hyperuricemia (excess uric acid) very significantly at a dose of 21.2mg /30gW.
PENENTUAN POTENSI EKSTRAK KULIT BATANG TUMBUHAN SIKKAM (Bischofia javanica Blume) SEBAGAI ANTIOKSIDAN DENGAN METODE DPPH DAN SITOTOKSIK DENGAN METODE BSLT Dapot Parulian Manurung; Agus Sundaryono; Hermansyah Amir
ALOTROP Vol 4, No 1 (2020)
Publisher : University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/atp.v4i1.13715

Abstract

This study aims to determine the level of antioxidant activity of Sikkam bark extract (Bischofia javanica Blume) and its potential as an anticancer agent. This research was conducted in November 2018 - April 2019 in the Laboratory of Chemical Education Guidance and Counseling and Basic Science Laboratory, University of Bengkulu. The sample in this study was obtained from Gunung Mariah village in Simalungun district, North Sumatra. The method used in this study was extraction using maceration, liquid-liquid fractionation, phytochemical test, DPPH (Diphenylpicrylhiydrazyl) test and BSLT test (Brine Shrimp Lethality Test). Extraction maceration using ethanol 96%, fractionation using a solvent n-hexane and ethyl acetate, phytochemical tests using Mayer's reagent, Lieberman-Burchard, FeCl3 1% and H2SO4 2N, antioxidant test using DPPH (1,1-diphenyl-2-picrylhydrazyl) and cytotoxic tests using shrimp Artemia salina Leach larvae. The results of the study on maceration of 800 grams of Sikkam bark obtained a crude extract of 53.6 grams (6.7%). Fractionation from 10 grams of crude extract obtained 7.24 gram ethanol fraction (72.4%), ethyl acetate fraction 2.14 gram (21.4%) and n-Hexane fraction 0.39 gram (3.9%). Phytochemical test results obtained the content of alkaloids, flavonoids, tannins, saponins and terpenoids with the highest yield on tannin compounds. The antioxidant activity test results obtained IC50 values in crude extracts of 20.94 ppm, ethanol fraction 36.29 ppm, ethyl acetate fraction 83.28 ppm and n-Hexane fraction 39.13 ppm which showed that crude extract, ethanol fraction, n-Hexane fraction were categorized as very strong antioxidants and Ethyl acetate fraction is categorized as a strong antioxidant. The cytotoxic test results using crude extract obtained an LC50 value of 54,827 ppm which showed that Sikkam bark extract was toxic so that it was potential as an anticancer agent.
PENGARUH MODEL PEMBELAJARAN FLIPPED CLASSROOM TERHADAP HASIL BELAJAR KIMIA SISWA PADA MATERI LARUTAN PENYANGGA DI SMAN 5 KOTA BENGKULU Rantika Khumairah; Agus Sundaryono; Dewi Handayani
ALOTROP Vol 4, No 2 (2020)
Publisher : University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/atp.v4i2.13832

Abstract

The purposes of this study is to know student learning outcomes of chemistry using flipped classroom learning model and know influence of flipped classroom learning model to on buffer solution. The study was conducted in February-March of 2019 in SMAN 5 Bengkulu City This study is pre-experimental design with one-grup pretes-posttest design. Population of this study is all of XI MIPA’s student which a total of 216 students with sample of this study is XI MIPA 5’s student which a total of 36 students. Technique of sampling in this study is used with purposive sampling technique. Instrument of this study used test of learning outcomes with 20 items pretest and posttest. Analysis of the data used are mean values, normality test, homogeneity test, and t-test to the student learning outcomes. Based on normality test and homogeneity test obtained that pretest and posttest have normal distribution and distributed to homogeneous. Average value of pretest and posttest are 60,1 and 80,0. The result of hypotheses using t-test showed that value of significance is 0.000 < 0.05, so flipped classroom model influenced of significance to student learning outcomes. The result of this study showed that flipped classroom learning model can positive influence to learning outcomes and increased student learning outcomes on buffer solution in XI MIPA 5 SMA N 5 Bengkulu city on academic year of 2018/2019.
UJI AKTIVITAS ANTIPLASMODIUM FRAKSI N-HEKSANA DAUN Peronema canescens TERHADAP Mus musculus Fenny Andriani; Agus Sundaryono; Nurhamidah Nurhamidah
ALOTROP Vol 1, No 1 (2017)
Publisher : University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/atp.v1i1.2712

Abstract

Peronema canescens (Sungkai) has been used in Bengkulu as raw herbal remedy to reduce the fever, some people are using as a malaria drug. P.  canescens leaves contain alkaloids, flavonoids, tannins and terpenoids – steroids .This study aims to analyze the effect of P.  canescens leaves  n-hexane fraction.  against paracetemias in Mus musculus infected with Plasmodium berghei, then to prove whether the . P.  canescens leaves n-hexane fraction  has potential as alternative medicine for malaria .   To make P. canescens extract , leaves was macerated using EtOH (96%), then filtrate was evaporated using a rotary evaporator, then fractionated with n-hexane. The 25 healthy  M.musculus  weighing 20-40g each, infected with P.berghei, grouped into 5 ie group 1 (K-) was treated orally with aquades, group 2 (K +) was treated orally with 0.42 mg of Chloroquine, Group 3 (P1) Group 4 (P2), group 5 (P3) was treated orally with a P.  canescens leaves n-hexane fraction  each at a dose of 0.028 ,  0.056 and 0.084 g / kgBW. After 3 days of digestion for each treatment, the amount of erythrocytes was calculated under a microscope. : The giving of the with dose 0,028 g / kgBW able to inhibit paracetemia 33,49%,  0,056 g / kgBW able to  57.91% and  0,084 g / kgBW able to  61.69%   The conclusion is the P. canescens leaves n-hexane fraction  at a dose of 0.028 , 0.056 , and 0.084 g / kgBW orally wil be decreased the amount of paracetemia in M.musculus, and the higher the dose given the higher percent of the inhibition.
PEMBUATAN NANOPARTIKEL-PERAK EKSTRAK DAUN UBI JALAR ORANGE (Ipomoea batatas L.) DENGAN METODE BIOREDUKSI DAN UJI AKTIVITAS TERHADAP JUMLAH TROMBOSIT Mus musculus Ririn Trinanda; Agus Sundaryono; Dewi Handayani
ALOTROP Vol 3, No 1 (2019)
Publisher : University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/atp.v3i1.9042

Abstract

This study aims to make silver nanoparticles (NPP) of orange Sweet potato extract (Ipomoea batatas L.) using bioreduction method and test the effect of giving silver nanoparticles - leaf extract of Ipomoea batatas L. orange (Ipomoea batatas L.) to the number of thrombocyte from male of  Mus musculus induced by aspirin. The precursor used is 1 mM AgNO3 solution and as bioreductor is an antioxidant compound in orange sweet potato extract (Ipomoea batatas L.). The ratio of AgNO3 1 mM solution volume and orange sweet potato leaf extract is 9: 1 with 2 hours time. The characteristic test again obtained NPP is done using FTIR and Particle Size Analyzer (PSA) using Dynamyc Light Scattering method (DLS). The results showed that from the PSA analysis is known the average size of NPP – I. Batatas, L leaf extract  is an average of 86.0 nm with a polydispersity value (PDI) of 0.17 < 1 that indicates that the  NPP-leaf extract particle size distribution It is less homogeneous and are less stable.The results show that the administration of silver nanoparticles - orange sweet potato extract (Ipomoea batatas L.) can increase the platelet count of male mice significantly Dose of 0.014 g / Kgbb of 259,600 / mm3. 
PENGEMBANGAN E-MODUL KIMIA BERBASIS KEMAMPUAN BERPIKIR KREATIF DENGAN MENGGUNAKAN KVISOFT FLIPBOOK MAKER Cici Romayanti; Agus Sundaryono; Dewi Handayani
ALOTROP Vol 4, No 1 (2020)
Publisher : University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/atp.v4i1.13709

Abstract

The aim of this research is to determining level of feasibility and response of students from the development of e-modules in chemistry course based on creative thinking ability using the Kvisoft Flipbook Maker on material electrolyte and non-electrolyte solution in SMA Negeri 9 Kota Bengkulu. The type of research used is R & D (Research & Development), which uses the ADDIE development model (analysis, design, development, implementation, evaluation) with the limitation of stage until implementation. The results of this research show that the chemistry-based E-Module based on creative very feasible and feasible to use with the validation results from media experts was 97.7%, material expert validation was 90.2%, readability the small group trials conducted by 9 students in class X MIPA 2 was 97.04% and student responses in the large group trial conducted by 25 students in class X MIPA 1 was 86.4% (very feasible category). This shows that e-modules in chemistry course based on the ability to think creatively by using the kvisoft flipbook maker are very suitable to be used in the learning process
SINTESIS DAN KARAKTERISASI NANOPARTIKEL KEBIUL (Caesalpinia bonduc L ) TERSALUT LIPID PADAT TRIMIRISTIN Chyntia Margareta; Agus Sundaryono; Nurhamidah Nurhamidah
ALOTROP Vol 5, No 2 (2021)
Publisher : University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/atp.v5i2.17137

Abstract

Co-Authors ACENG RUYANI Ade Indriani Putri Alfia Novera Indah Esa Kasih Arina Fatharani Arsela Eko Listiono Bedah Rupaedah Bedah Rupaedah, Bedah Bhakti Karyadi BHAKTI KARYADI Bhakti Karyadi Bonodikun Bonodikun Candrawati, Emilia Candrawati, Emilia Chyntia Margareta Cici Romayanti Dapot Parulian Manurung Devi Silsia Devi Silsia Dewi Handayani Dhea Prasiwi Dian Kartika Sari Eko Swistoro Elvinawati Elvinawati Emi Hartati Emilia Candrawati Emilia Candrawati Endang Widi Winarni Endang Widi Winarni Ernis, Gustria Euis Nursa’adah Fahrurrozi, Fahrurrozi Fenny Andriani Fitri Yuwita Fuji Ramadenti Hadi Apriyoanda Hadi Apriyonda Henny Johan Herison, Catur Hermansyah Amir I Nyoman Candra I Nyoman Chandra Ilham Agus Saputra Jertadi Putri Dhani Kirent Arikhsa Putri Krisandini, Triana Lina Widawati M Lutfi Firdaus M. Farid M. Lutfi Firdaus M. Lutfi Firdaus Maya Wahyunarti Mayshah Purnamasari Megasari Megasari Meizul Zuki Mellyta Uliyadari Mina Sihite Hutasoit Muchammad Farid Mukhsin Mukhsin Muzanip Alperi Nur Wakidatul Khasanah Nurhamidah Nurhamidah Nurhamidah Nurhamidah Nurhamidah Nurhamidah Nurleli Nurleli Nurlia Latifah Nursaa'adah, Euis Nursaadah, Euis Pandu Imam Sudibyo Adib Pandu Imam Sudibyo Adib Pramesthi Regita Putri Putri Suci Asriani Rantika Khumairah Rasie Janika Reni Jumika Ridwan Yahya Rika Partika Sari Rina Elvia Rina Elvia Rina Elvia, Rina Rina Endriani Ririn Trinanda Rofiqa Asri Sari Puspita Ningsih Shiba Meike Indira Shinta Lestari Sipriyadi Sri Astuti Sumpono Sumpono Sumpono Sumpono Sumpono, Sumpono Suryadi Suryadi Theo Kuntara Tuti Maryana Tyas Sri Muryati Ulfah Anis Umaya Umi kalsum Wuri Marsigit Yenni Okfrianti Yohannes Adimar Marbun Yulia Suparti Zulman Efendi