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All Journal Jurnal Entropi Sainstek Irfani Tadbir: Jurnal Manajemen Pendidikan Islam Orbital: Jurnal Pendidikan Kimia Dalton : Jurnal Pendidikan Kimia dan Ilmu Kimia Journal Health & Science : Gorontalo Journal Health and Science Community Jambura FIsh Processing Journal Jambura Journal of Educational Chemistry Jambura Journal of Chemistry Abdimas Umtas : Jurnal Pengabdian kepada Masyarakat Jurnal Pendidikan Sains Indonesia (Indonesian Journal of Science Education) Pentagon: Jurnal Matematika dan Ilmu Pengetahuan Alam Algoritma: Jurnal Matematika, Ilmu Pengetahuan Alam, Kebumian dan Angkasa Damhil: Jurnal Pengabdian kepada Masyarakat J-CEKI Jurnal Pendidikan Kimia, Fisika dan Biologi
Erni Mohamad
Universitas Negeri Gorontalo
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Education Health Professions Industrial & Manufacturing Engineering Mathematics Public Health Social Sciences Other

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Measuring Students' Scientific Argumentation Skills in Explaining Phenomena Related to Acid-Base Concepts Rahmawati Hilala; Lukman Abdul Rauf Laliyo*; Jafar La Kilo; Julhim S. Tangio; Erni Mohamad; Mangara Sihaloho
Jurnal Pendidikan Sains Indonesia Vol 11, No 2 (2023): APRIL 2023
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jpsi.v11i2.27822

Abstract

Scientific argumentation is one of the main competencies of students in communicating chemical phenomena through the application of conceptual mastery that they have understood. The development of this ability has been postulated in the 2013 curriculum through constructivist-based learning approaches and scientific inquiry, either in the classroom or the laboratory. However, there is relatively little information on how students' scientific argumentation skills develop. This study aims to measure students' scientific argumentation skills in explaining five science phenomena related to the acid-base concept, namely: acid rain, salt crystal making, the use of antacids as ulcer medicine, the use of CaMgCO3 dolomite fertilizer, and the difference in the acidity level of HCl and H2SO4, using Rasch modeling. Each phenomenon was measured by three multiple-choice test items, which were developed to test students' ability to make claims (Q1), evidence (Q2), and justification (Q3). The data were analyzed using Rasch modeling, allowing researchers to measure the item and individual respondent levels. Respondents were 100 chemistry students in Gorontalo, who were differentiated in gender and adversity quotient. The results showed that the measurement instrument has good validity and reliability. In addition, it was found that students' abilities differed; some items responded differently regarding gender and adversity quotient. Most students tended to be weak in explaining the phenomenon of acid rain, the use of antacids for ulcer disease, the use of dolomite fertilizer, and the difference in the acidity level of HCl and H2SO4
Ekstraksi, Analisis Kuantitatif dan Bioaktivitas Virgin Coconut Oil (VCO) Salimi, Yuszda K; Syarbin, Ruslun A. R.; Yusuf, Novalita; Paputungan, Mardjan; Mohamad, Erni
Jambura Journal of Chemistry Vol 5, No 1 (2023): February
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34312/jambchem.v5i1.21713

Abstract

Penelitian ini bertujuan untuk mengekstraksi Virgin Coconut Oil (VCO) dengan metode CEVCO (Cold Extaction Virgin Coconut Oil), FEVCO (Fermentation Extraction Virgin Coconut Oil), IEVCO (Inducement Extraction Virgin Coconut Oil), PEVCO (Papaya Extraction Virgin Cococnut Oil) dan NEVCO (Nanas Extraction Virgin Cococnut Oil). Pengujian kualitas berbagai metode ekstraksi VCO secara kuantitatif dianalisis sifat fisikokimia, analisis komposisi asam lemak dengan Kromatografi gas – spektrofotometri Massa (GC-MS), bioaktivitas daya hambat bakteri dengan metode difusi sumuran dan bioaktivitas antioksidan dengan metode diphenil pikril hidrazil (DPPH). Hasil penelitian ini menunjukkan bahwa perlakuan terbaik pada uji fisikokimia dengan metode CEVCO (kadar air 0,0044, asam lemak bebas 0,0029, bilangan peroksida 0,0012, bilangan iod 6,4719, bilangan penyabunan 255,25 dan pH 6) dan metode FEVCO, IEVCO memenuhi syarat standar nasional Indonesia (SNI). Hasil analisis komposisi asam lemak yang terbaik pada metode IEVCO yaitu terdapat asam laurat, asam palmitat, asam kaproat, asam kaprilat dan asam kaprat. Hasil pengujian organoleptik pada metode CEVCO memiliki kualitas yang terbaik dari segi warna, rasa dan aroma. Hasil pengujian daya hambat terhadap bakteri S. aureus sebesar (15,64) dan bakteri E. coli (15,90) pada metode IEVCO dengan konsentrasi 33,33% dan lama waktu 3 jam. Hasil pengujian bioaktivitas antioksidan metode NEVCO memiliki nilai IC50 45 dengan kategori aktivitas antioksidan sangat kuat.
ANALISIS KANDUNGAN UNSUR KALSIUM (CA) DAN KALIUM (K) SERTA PEMBUATAN PUPUK ORGANIK DARI SEDIMEN DANAU LIMBOTO Giu, Fitri Ani; Musa, Weni J.A; Bialangi, Nurhayati; Isa, Ishak; Mohamad, Erni; Kunusa, Wiwin Rewini
Jambura Journal of Chemistry Vol 6, No 1 (2024): February
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jambchem.v6i1.14694

Abstract

ABSTRAK Penelitian ini bertujuan untuk mengetahui kandungan Kalsium (Ca) dan Kalium (K) pada sedimen menggunakan metode kualitatif dan kuantitatif (AAS ). Pupuk organik menggunakan metode Kualitatif pada sedimen danau Limboto. Berdasarkan hasil penelitian uji kualitatif didapatkan kandungan unsur kalsium dan kalium pada sedimen dan uji kuantitatif kadar (Ca) 6,16%, 6,16% dan 5,73% dan Kalium (K) 0,10%, 0,09% dan 0,08% yang memenuhi standar kebutuhan tanaman. dan berdasarkan hasil pengujian kuantitatif di dapatkan pupuk organik dari Sedimen danau limboto mengandung kalsium dan tidak mengandung Kalium hal ini disebabkan pereaksi yang digunakan sudah teroksidasi Kata kunci : Danau Limboto, Sedimen, Pupuk Organik, Kalsium, Kalium, AAS.
Karakteristik Kimia Dan Organoleptik Asap Cair Tempurung Kelapa Dalam Menurunkan Cemaran Logam Timbal (Pb) Pada Ikan Cakalang (Katsuwonus pelamis) Djalil, Jhodi Pratama; Salimi, Yuszda K; Iyabu, Hendri; Bialangi, Nurhayati; Mohamad, Erni; Kunusa, Wiwin Rewini
Jambura Fish Processing Journal Vol 6, No 1 (2024): VOLUME 6 NOMOR 1, JANUARY 2024
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jfpj.v6i1.21715

Abstract

This research aims to determine the chemical characteristics of coconut shell liquid smoke and analyze the effectiveness of using liquid smoke in reducing Pb metal contamination in skipjack tuna (Katsuwonus Pelamis). Grade 2 liquid smoke from coconut shells is produced by the Pulubala IKM center through the stages of pyrolysis and distillation. This study employs a completely randomized design (CRD) with two replications. To determine the chemical characteristics of the liquid smoke, the analyzed methods include pH measurement, phenol content, total acidity, protein content, organoleptic value, and the chelating power of heavy metal Pb with variations in the concentration of liquid smoke test solutions AC (undiluted liquid smoke), AC2, AC4, AC6, and AC10 (liquid smoke with the addition of distilled water at 2%, 4%, 6%, and 10%). The results show that the best treatment is obtained from coconut shell liquid smoke with AC concentration (undiluted liquid smoke) having the best characteristics, namely a pH value of 4, phenol content of 1.6469%, total acidity of 14.94 mg/mL, protein content of 0.6083%, and a chelating power for heavy metal Pb of 97.32%. The results of the organoleptic test indicate that overall, the highest score was obtained with a neutral value at the concentration of AC2 (liquid smoke with the addition of 2% distilled water).
Usaha Kreatif Berbasis Jagung sebagai Alternatif untuk Meningkatkan Ekonomi di Desa Daenaa, Limboto Barat Julhim S Tangio; Rustam I. Husain; Lukman Abdul Rauf Laliyo; Erni Mohamad; Perry Zakaria; Ahmad Kadir Kilo
Damhil: Jurnal Pengabdian kepada Masyarakat Vol 3, No 1: June 2024
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34312/damhil.v3i1.26814

Abstract

This community service project seeks to boost the added value and welfare of maize producers through the creation of corn flour products. Corn flour products have tremendous potential in enhancing the economics of the community, especially corn farmers, by delivering food products manufactured from maize that have wonderful tastes and high nutritious value. In addition, the food products created are very popular and have vast market potential. Through the training and mentoring approach of the IbM activities, the community obtained important information and knowledge, enabling them to create innovation and enterprise in the maize sector. The outcomes of this activity demonstrate that this service program not only enhances the skills and knowledge of the community, but also helps the improvement of their economic wellbeing in a sustainable manner.
Pelatihan Pembuatan Pestisida Nabati Sebagai Alternatif Pengendalian Serangga Hama Tanaman Pada Petani Sayur di Desa Bulotalangi Timur Nurhayati Bialangi; Erni Mohamad; Mangara Sihaloho; Ahmad Kadir Kilo; Julhim S Tangio
Damhil: Jurnal Pengabdian kepada Masyarakat Vol 2, No 1: June 2023
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34312/damhil.v2i1.20825

Abstract

This service activity aims to provide training on making vegetable pesticides to farmers and housewives. As an alternative to controlling plant insect pests, the use of vegetable pesticides is considered safe to use. Botanical Pesticides are pesticides whose active ingredients come from plants or herbs and other organic materials which are efficacious in controlling pest attacks on plants. This pesticide does not leave harmful residues on plants or the environment and can be made easily using inexpensive materials and simple equipment. Vegetable pesticides are relatively easy to make with natural or vegetable ingredients which make these pesticides easy to decompose in nature so they don't pollute the environment. This organic pesticide is able to overcome and repel pests that destroy agricultural and plantation crops in general, such as fleas, caterpillars, grasshoppers and so on. The method used is direct training to groups of housewives and vegetable farmers using innovative technology. From the results of the implementation of these activities, the community was very enthusiastic about participating in these activities and was interested in making/producing their own pesticides from materials that are easy to obtain from the surrounding environment
Pengembangan Usaha Petani Sayur untuk Meningkatkan Perekonomian Masyarakat Desa Bulotalangi Timur” Erni Mohamad; Perry Zakaria; Fauziah N Kasim; Widya A Habi; Rahmat S Napu; Lilis Anggraini; Priska Paramata
Damhil: Jurnal Pengabdian kepada Masyarakat Vol 1, No 2: December 2022
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34312/damhil.v1i2.17435

Abstract

This service activity aims to provide education to farmers and housewives in an effort to develop vegetable farming businesses. So far, vegetables that have only been consumed or marketed to the general public can be converted into other ingredients. The people of this village do not yet understand that these vegetables, especially the produce of kale and spinach vegetable farmers, can be used as other ingredients in the form of snacks, namely as sticks and noodles. The processing process does not require a lot of money, but when it is marketed it will be able to increase the economic value of the community. The method used is direct training to groups of housewives and vegetable farmers with innovative technology. From the results of the implementation of this activity, the community was very enthusiastic about participating in the activity and was interested in making/producing kangkong chips and spinach noodles themselves. The community also suggested that they would make a business in the form of snacks as well, apart from those made from kale and spinach, according to their statements after participating in the training activities
Pemberdayaan Masyarakat Tentang Pembuatan Pupuk Organik Dari Kotoran Ternak Di Kelurahan Hutuo, Kecamatan Limboto, Gorontalo Erni Mohamad; Mangara Sihaloho; Perry Zakaria; Gevira Datungsolang; Neni Purnama Djaipano
Damhil: Jurnal Pengabdian kepada Masyarakat Vol 1, No 1: June 2022
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34312/damhil.v1i1.15337

Abstract

This community service activity aims to reduce the community's dependence on chemical fertilizers which are increasingly expensive with the hope that this activity can improve the ability of people's knowledge in utilizing livestock manure which is not only left alone but must be processed so that it becomes useful as organic fertilizer for the purpose of increasing yields. harvest. The use of livestock manure which in this case is cow and goat manure as organic fertilizer is still very lacking among breeders. Almost 100% of farmers are not aware of the benefits of this animal manure as organic fertilizer because their focus is only on the livestock itself. Processing and utilizing livestock manure as organic fertilizer, so that people no longer depend on the use of chemical fertilizers. In this activity is to provide training to the community of livestock and farmer groups about making organic fertilizer from livestock manure (cows and goats). This activity is expected to train the community to be able to produce organic fertilizer that will be used by farmers, which has been a problem for farmers, namely crop failure caused by the community not being able to buy fertilizer due to the increasing price of chemical fertilizers. The method used is direct training to the group on the manufacture of organic fertilizer from animal waste using the fermentation method. The result of the implementation of the activity is that the community is very enthusiastic in participating in this activity. The community is interested in making/producing this fertilizer on their own, in addition to livestock manure, the community also intends to make this fertilizer themselves from waste or waste materials. Especially household waste based on the knowledge they have gained in this activity.  
Edukasi Pengelolaan Sampah Kawasan Pesisir Sebagai Upaya Mendukung Program Kampung Bahari Nusantara di Kelurahan Leato Selatan Julhim S. Tangio; Deasy N Botutihe; Astin Lukum; Erni Mohamad; Mangara Sihaloho; Rustam Husain
Damhil: Jurnal Pengabdian kepada Masyarakat Vol 2, No 2: December 2023
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34312/damhil.v2i2.24304

Abstract

Kegiatan pengabdian kepada masyarakat merupakan bagian integral dari Tri Dharma Perguruan Tinggi, yang melibatkan lembaga, dosen, dan mahasiswa dalam berkontribusi kepada masyarakat. Dalam konteks ini, dilakukan pengabdian melalui edukasi pengolahan sampah organik dan anorganik bagi masyarakat pesisir pantai di kelurahan Leato Selatan untuk mendukung program Kampung Bahari Nusantara (KBN) yang bertujuan meningkatkan kesejahteraan masyarakat pesisir pantai. Tujuan dari kegiatan pengabdian ini adalah memberikan pengetahuan, pemahaman, kepedulian, dan keterampilan dalam mengolah sampah, baik organik maupun anorganik. Proses pelaksanaan kegiatan mencakup observasi lokasi pengabdian, perencanaan, pelaksanaan, dan evaluasi kegiatan. Hasil yang diperoleh dari kegiatan ini antara lain adalah: (1) penghasilan produk olahan sampah berupa pupuk organik dan bunga dari plastik, (2) peningkatan pengetahuan dan kepedulian masyarakat terhadap kebersihan lingkungan, dan (3) terbentuknya kelompok ibu-ibu pengolah sampah, terutama dalam pembuatan pupuk dan bunga dari plastik. Terjadi peningkatan persentase pengetahuan di kalangan sasaran, yaitu anak-anak sebesar 82%, remaja sebesar 82%, dan dewasa sebesar 86%. Dengan demikian, dapat disimpulkan bahwa kegiatan pengabdian ini berhasil meningkatkan pengetahuan, sikap, dan keterampilan peserta pelatihan dalam Pengolahan sampah organik dan anorganik.
ANALISIS KANDUNGAN UNSUR NPK PADA PUPUK ORGANIK BERBASIS SACHA INCHI (Plukenetia Volubilis) Naim, Fitria; Mohamad, Erni; Kilo, Jafar La
Dalton : Jurnal Pendidikan Kimia dan Ilmu Kimia Vol 7, No 3 (2024)
Publisher : Universitas Islam Kalimantan MAB Banjarmasin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31602/dl.v7i3.16654

Abstract

Penelitian ini bertujuan untuk mengetahui kandungan kimia pupuk NPKyang dan mengetahui kualitas kompos dari sacha inchi. Analisis kandungan Nitrogen (N) dengan menggunakan metode Kjedahl, Fosfor (P) menggunakan spektrofotometer UV-VIS, Kalium (K) menggunakan spektrofotometri serapan atom, dan analisis kualitas kompos di uji berdasarkan tekstur, warna dan bau. Hasil analisis menujukkan bahwa kandungan nitrogen (N) memiliki nilai 0,32%, fosfor (P) memiliki nilai 1,90% dan kalium (K) memiliki nilai 0,32%. Berdasarkan hasil penelitian bahwa hasil analisis kandungan NPK dari pupuk organik berbasis sacha inchi untuk kandungan fosfor (P) dan kalium (K) serta uji kualitas kompos diperoleh tekstur seperti tanah, warna kehitaman dan berbau tanah, hasil tersebut telah memenuhi standar SNI 19-7030-2004 tentang spesifikasi kompos dari sampah organik domestic.  
Co-Authors Ahmad Kadir Kilo Akram La Kilo Alfian Erwinsyah Amalia Rizki Pautina Arviani Arviani Arwin, Muh Astin Lukum Astin Lukum Bidilah, Siti Aulia Botutihe, Deasy N. Deasy N Botutihe Djalil, Jhodi Pratama Djuandi Olii Erga Kurniawati Fadila Karim Faiga Olifia Dg. Mangawe Fauziah N Kasim Fitria Naim Frida Maryati Yusuf Gevira Datungsolang giu, fitri ani Haris Munandar Hendri Iyabu Intan J. Oputu Ishak Isa Ishka Isa Isna Rahayu Ningsih Jafar La Kilo Jafar La Kilo Julhim S Tangio Julhim S Tangio Julhim S Tangio Julhim S. Tangio karmila karmila Kostiawan Sukamto, Kostiawan La Alio La Ode Aman Lanto Ningrayati Amali Lasim, Windi Sulistiyani Lilis Anggraini Lukman A. R. Laliyo Lukman A.R. Laliyo Lukman Abdul Rauf Laliyo Mangara Sihaloho Mangara Sihaloho Mardjan Paputungan Marnila Marnila Masrid Pikoli Meiske Hasan Merlin Darise Mohi, Rindi Antika Muhamad Iksan Musa, Weni J.A Naim, Fitria Najmah Najmah Nasadi, Nurlaila Neni Purnama Djaipano Netty Ino Ischak Nita Suleman Nur Fadillah Pulukadang Nur'afni Suaib Nurfadilah M. Kasim Nurhayati Bialangi Opir Rumape Pakaya, Agustina H. Perry Zakaria Perry Zakaria Perry Zakaria Pratiwi One Priska Paramata Rahmat S Napu Rahmawati Hilala Ramli Utina Rindi Antika Mohi Roslina Imran Rustam I. Husain Sandi, Fadly Sasmita Pomuato Siti Aisa Liputo Sriyanti S Said Sufriyanto Ibrahim Syarbin, Ruslun A. R. Thayban Thayban Umar Sako, Umar Usman, Yuyan Ali Widya A Habi Wiwin Rewini Kunusa Wiwiyani Wiwiyani Yestin Takowa Yowan, Yowan Yusuf, Novalita Yuszda K Salimi Yuszda K. Salimi Zulfa K Muslimin