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All Journal Microbiology Indonesia Jurnal Pendidikan dan Pembelajaran Kimia (JPPK) JURNAL PENGABDIAN KEPADA MASYARAKAT Chimica et Natura Acta JURNAL SAINS INDONESIA Jurnal Pendidikan Kimia (JPKim) Jurnal Paedagogy Jurnal Pengabdian UNDIKMA Gagasan Pendidikan Indonesia Jurnal Abdimas Ilmiah Citra Bakti (JAICB) Jurnal Teknologi Pendidikan : Jurnal Penelitian dan Pengembangan Pembelajaran Journal of Science and Science Education (JoSSEd) Jurnal Pengabdian Masyarakat Bestari (JPMB) JGK (Jurnal Guru Kita) Abdimas Mandalika al Kimiya : Jurnal Ilmu Kimia dan Terapan Jurnal Bioteknologi & Biosains Indonesia (JBBI) Jurnal Abdimas Ilmiah Citra Bakti Jurnal Bioteknologi & Biosains Indonesia
SARONOM SILABAN
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The Effect of Problem Based Learning (PBL) Learning Models on Student Chemistry Learning Outcomes in Buffer Solution Material Limbong, Rachel Wandira; Silaban, Saronom
Jurnal Pendidikan dan Pembelajaran Kimia Vol 12, No 3 (2023): Jurnal Pendidikan dan Pembelajaran Kimia
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Abstract:The Effect Of Problem-Based Learning (PBL) Learning Model On Students’ Learning Outcomes In Buffer Solution Materials . This study aims to: 1) Change the effect of the Problem Based Learning learning model on learning outcomes of material buffers in class XI MIPA and 2) find out which cognitive domain is the most developed Problem Based Learning learning model in the application of buffer solutions. Samples were taken randomly as many as 32 students in class XI MIPA SMA Negeri 5 Medan. The instrument used in this study is a test instrument. The ice instrument was carried out 2 times, namely pre-test and post-test. The instrument used was an objective test with a total of 30 questions to test the level of students' cognitive abilities, namely C₁ (knowledge), C₂ (understanding), and C4 (analysis). PBL results show that there is an increase in test scores. Where the average pretest score is only 62.94 while the average post test score is 80.42. Based on this, learning using the Problem Based Learning model is able to increase knowledge of the buffer solution material in class XI MIPA students at SMA Negeri 5 Medan.Keywords: Problem Based Learning (PBL), Buffer Solutions, Chemistry Skills DOI: 10.23960/jppk.v12.i3.2023.05
The Impact of Temperature and Antioxidants on Oxidation and The Formation of Trans Fatty Acids in Several Palm Oil Derivatives Saragih, Martua Haojahan; Silaban, Saronom; Eddiyanto, Eddiyanto
al Kimiya: Jurnal Ilmu Kimia dan Terapan Vol. 10 No. 2 (2023): al Kimiya: Jurnal Ilmu Kimia dan Terapan
Publisher : Department of Chemistry, Faculty of Science and Technology, UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/ak.v10i2.25256

Abstract

The quality of palm oil is strongly influenced by temperature. The oxidation of palm oil can be caused by high temperatures. The higher the storage temperature, the faster oxidation occurs. In this research, the temperature significantly affects the quality of several palm oil derivative products such as Palm Olein, Palm Stearin, Palm Kernel Oil, and Palm Kernel Stearin. Antioxidants are very effective in resisting the increase in the oxidation reaction of some palm oil commodities. With the addition of tertiary butylhydroquinone (TBHQ) or butylated hydroxytoluene (BHT), the increase in peroxide value, p-anisidine values, free fatty acid, color tends to be slower than without the addition of antioxidants. For PV, BHT was the most effective antioxidant for RPKOL at a 29.75% increase, RBDOL at 9.91%, and RBDST at 5.26% but for RPKS TBHQ was the most effective increase at 19.83%. For anisidine value, TBHQ+BHT was most effective for RPKOL with a 61.62% increase, TBHQ for RPKS with 76.76%, BHT for RBDOL and RBDST with 15.37% and 14.46%. In the FFA test, BHT was effective for RPKOL and RPKS with a percentage increase of 6.48% and 6.67%, but TBHQ was effective for RBDOL and RBDST to controlled FFA with an increase of 8.41% and 3.38%. In color testing, TBHQ proved to be the effective antioxidant for RPKOL and RBDOL, resulting in percentage increases of 8.71% and 2.13%, respectively. For RPKS, the combination of TBHQ and BHT was employed, resulting in no percentage increase (0%). Additionally, BHT at 3.85% was used for RBDST. At a temperature of 130°C, an oxidation process was observed, indicating the formation of an aldehyde compound. This was evidenced by the FT-IR spectrum, showing peaks at wave numbers 1760 cm⁻¹ (C=O of aldehyde) and 2900 cm⁻¹ (CH on aldehyde). In this research, we can also see the formation of trans fatty acids C18:1n9t in GC-FID's peak area
ANTIDIABETIC ACTIVITY OF LEAF EXTRACT OF Clerodenrum fragrans Vent Willd IN Rattus novergicus INDUCED BY ALLOXAN Silaban, Saronom
Jurnal Bioteknologi & Biosains Indonesia (JBBI) Vol. 9 No. 1 (2022)
Publisher : BRIN - Badan Riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jbbi.2022.1792

Abstract

Sarang banua plants are grown in Simalungun, North Sumatra, Indonesia, and have been used by the community as traditional medicinal plants. Sarang banua plant is a type of Clerodendrum fragrans Vent Willd, including the family Verbenaceae. This study aimed to determine the antidiabetic activity of the leaf extract of sarang banua (C. fragrans Vent Willd) in white male rats (Rattus novergicus) induced by alloxan. This study used a RAL design with seven treatments, namely (K0) standard feed, (K1) Na-CMC 0.5%), (K2) metformin, (K3) ethanol extract 100 mg/kg bw, 200 mg/kg bw (K4), 300 mg/kg bw (5), (K6) ethyl acetate extract 200 mg/kg bw and 300 mg/kg bw (K7). Groups K1 to K7 were induced by alloxan before being given treatment. Each treatment was replicated three times. The results showed that the application of leaf extract of the C. fragrans affected on reducing the blood glucose levels of alloxan-induced rats. The used of ethanolic extract of C. fragrans 100 mg/kg bw resulted in the highest percentage decrease in blood glucose (54.46 ± 5.60%) of hyperglycemic rats induced by alloxan, close to a positive control (56.63 ± 1.86%).
Peningkatan Produktivitas dan Pemasaran Digital UMKM Getah Gambir di Desa Salak II Kabupaten Pakpak Bharat Sibarani, Choms Gary Ganda Tua; Silaban, Saronom; Ulgari, Siti; Siahaan, Sabda Dian Nurani; Ruslan, Dede; Boangmanalu, Eka Putra Dairi; Lukman, Mena Fadilia
Jurnal Pengabdian UNDIKMA Vol. 6 No. 4 (2025): November
Publisher : LPPM Universitas Pendidikan Mandalika (UNDIKMA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/jpu.v6i4.17624

Abstract

This community service program aims to optimize gambier production through the application of an Appropriate Technology (TTG) pressing machine, facilitate the design of modern packaging, and strengthen digital marketing strategies and basic financial management for the “Merandal Majuna” business group in Salak II Village, Pakpak Bharat Regency. The method employed was a participatory approach through integrated intervention. The evaluation instruments included observation sheets, interviews, and documentation, which were analyzed using comparative descriptive techniques. The results of this program show a significant increase in productivity, as the Appropriate Technology (TTG) machine was able to process more than 30 kg of gambier leaves per cycle, far exceeding manual methods. In addition, the market reach expanded from the local level to wider markets through the use of digital platforms such as Instagram, Shopee, and Facebook Marketplace. The partners also developed basic skills in systematic financial record-keeping.
Pemberdayaan Kelompok Tani Melalui Penerapan Teknologi Mesin Pengupas Kulit Kopi untuk Meningkatkan Efisiensi Produksi di Desa Boangmanalu Kabupaten Pakpak Bharat Ulgari, Siti; Siahaan, Sabda Dian Nurani; Silaban, Saronom; Boangmanalu, Eka Putra Dairi; Sibarani, Choms Gary Ganda Tua; Lukman, Mena Fadilia; Atika, Liana
Jurnal Pengabdian UNDIKMA Vol. 6 No. 4 (2025): November
Publisher : LPPM Universitas Pendidikan Mandalika (UNDIKMA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/jpu.v6i4.17647

Abstract

This community partnership program (PKM) aims to improve production efficiency, work capacity, and farmers’ skills in coffee bean processing through the application of appropriate technology within the Mborgang Farmer Group in Boangmanalu Village, Pakpak Bharat Regency. The implementation methods consisted of socialization, training, technology application, and continuous mentoring. The evaluation instruments included field observation sheets and interviews, which were analyzed descriptively using both qualitative and quantitative approaches. The results of the program showed a significant increase in time efficiency and production capacity, from approximately 12 kg per hour to 100 kg per hour. In addition, farmers demonstrated improved understanding and skills in operating the machines, which had a positive impact on work effectiveness and time efficiency.
PENERAPAN MESIN PENGUPAS KULIT KOPI UNTUK MENINGKATKAN KAPASITAS PRODUKSI KELOMPOK WANITA TANI USAHANTA DI DESA SALAK II KABUPATEN PAKPAK BHARAT Siahaan, Sabda Dian Nurani; Ruslan, Dede; Ulgari, Siti; Silaban, Saronom; Boangmanalu, Eka Putra Dairi; Lukman, Mena Fadilia; Sibarani, Choms Gary Ganda Tua
Jurnal Abdimas Ilmiah Citra Bakti Vol. 6 No. 4 (2025)
Publisher : STKIP Citra Bakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38048/jailcb.v6i4.6042

Abstract

Kelompok Wanita Tani Usahanta di Desa Salak II, Kabupaten Pakpak Bharat, merupakan pelaku usaha kopi yang menghadapi kendala rendahnya kapasitas produksi akibat penggunaan alat pengupas manual dengan kemampuan hanya 12 kg/jam. Kondisi ini menyebabkan efisiensi kerja rendah dan membatasi volume produksi serta pendapatan kelompok. Kegiatan pengabdian ini bertujuan meningkatkan kapasitas produksi dan efisiensi usaha melalui penerapan mesin pengupas kulit kopi berkapasitas 60 kg/jam. Mitra kegiatan adalah Kelompok Wanita Tani Usahanta yang terdiri dari 19 anggota. Metode pelaksanaan meliputi sosialisasi, pelatihan pengoperasian mesin, penerapan teknologi, dan pendampingan selama proses adaptasi. Hasil kegiatan menunjukkan peningkatan kemampuan mitra hingga 90% dalam mengoperasikan mesin, serta peningkatan kapasitas produksi menjadi 60 kg/jam atau lima kali lebih tinggi daripada sebelumnya. Program ini memberikan dampak positif berupa peningkatan potensi pendapatan, efisiensi kerja, serta mendorong kemandirian dan penguatan kelembagaan kelompok. Penerapan teknologi tepat guna yang disertai pelatihan dan pendampingan intensif terbukti efektif dalam mendukung pengembangan usaha mikro di wilayah pedesaan.
The Effectiveness of Discovery Learning-Based Electronic Pocket Book Media to Improve Student Learning Outcomes on Chemical Bonding Materials Sembiring, Julia Marantika; Silaban, Saronom
Journal of Science and Science Education Vol. 6 No. 2 (2025): October
Publisher : Pascasarjana, Mataram University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jossed.v6i2.11179

Abstract

This research aims to develop an electronic pocket book media based on Discovery Learning on class X chemical bond materials at SMA Negeri 1 Tanjung Morawa. Discovery learning was chosen because it encourages students to be actively involved in the learning process through exploration. The development model used in this study is the ADDIE model, which includes five stages, namely: analysis, design, development, implementation, and evaluation. The results of the study showed that the discovery learning-based electronic pocket book media had very good validity with a material feasibility percentage of 94.5% and 97.5% media feasibility based on expert assessments. In terms of effectiveness, it has proven to be quite effective with an N-Gain percentage of 74%. In conclusion, the discovery learning-based electronic pocket book media on chemical bonding materials is considered valid, effective, and practical in improving understanding of chemical concepts and student learning outcomes
Co-Authors Adillah, Rani Albinus Silalahi Arfika, Nurul Asmi, Andalia Atika, Liana Boangmanalu, Eka Putra Dairi Dede Ruslan DEDE RUSLAN Dodi Pramana Eddiyanto Eddiyanto Eka Putra Dairi Boangmanalu Ginting, Susanna Gurning, Biworo Frida Hariono Hariono Hesti Fibriasasi IMAN PERMANA MAKSUM IMAN PERMANA MAKSUM Juniastel Rajagukguk Khairani Islamiyah KHOMAINI HASAN Lenti Susanna Saragih Limbong, Rachel Wandira Lukman, Mena Fadilia Lukman, Mena Fadillia Marudut Sinaga Murniaty Simorangkir Partomuan Simanjuntak Pohan, Ade Hermansyah Putri Novira Rajagukguk, Suryana Ramlan Silaban Ribu Surbakti, Ribu Saragih, Lenti Susanna Saragih, Martua Haojahan Sembiring, Julia Marantika Setiawan, Mhd Arif SHABARNI GHAFFAR Siahaan, Sabda Dian Nurani Sibarani, Choms Gary Ganda Tua Siregar, Litani Siti Ulgari SOETIJOSO SOEMITRO Sriadhi Sriadhi, Sriadhi SUTARYA ENUS Tita Juwitaningsih Tonel Barus, Tonel Toto Subroto Ulgari, Siti Wirda Hayatina Lubis, Wirda Hayatina Yeni Purba, Fince Putri