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All Journal Journals Mining Engineering : Bina Tambang Jurnal Periodic Jurusan Kimia UNP Sainstek Jurnal Riset Kimia SEMIRATA 2015 Indonesian Journal of Chemical Science Indonesian Journal of Chemistry JURNAL EKSAKTA PENDIDIKAN (JEP) JURNAL PENDIDIKAN TAMBUSAI Menara Ilmu Jurnal Farmamedika (Pharmamedica Journal) Pelita Eksakta Sainstek : Jurnal Sains dan Teknologi Molluca Journal of Chemistry Education (MJoCE) Hydrogen: Jurnal Kependidikan Kimia PRIMER (Prima Medical Journal) CHEDS: Journal of Chemistry, Education, and Science Jurnal Pijar MIPA MASALIQ: Jurnal Pendidikan dan Sains Menara Pengabdian Jurnal Pengabdian Pada Masyarakat Gudang Jurnal Multidisiplin Ilmu Jurnal Sains dan Kesehatan Jurnal Pendidikan Kimia, Fisika dan Biologi
Edi Nasra
Universitas Negeri Padang
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Pengaruh Kecepatan Pengadukan Terhadap Penyerapan Zat Warna Methyelene Blue Oleh Selulosa Dari Limbah Kulit Durian (Durio Zibethinus Murr) Heditama, Muhammad Raffi; Nasra, Edi; Amelia, Fitri; Kurniawati, Desy
Periodic Vol 13, No 2 (2024): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/periodic.v13i2.125359

Abstract

Methylene Blue is a dangerous dye produced in the textile industry. Biosorption can be used as one method to overcome textile dye waste. Biosorption is an easy-to-use method, because it is simpler, more economical, and environmentally friendly. Biosorbents that can be used, namely cellulose in durian peel (Durio zibethinus Murr.) can be used as an alternative to be used as a biosorbent in the absorption of methylene blue dyes. The purpose of this study was to determine the effect of stirring speed on the absorption of Methylene blue dye using cellulose adsorbents. In the study, methylene blue biosorption was carried out using durian peel cellulose biosorbent (Durio zibethinus Murr.) with a batch method at variations in stirring speeds of 50, 100, 150, 200, and 250 rpm. The results of this study obtained a cellulose extract from 90 grams of durian peel the extract resulted in 28.585 grams with a percentage of 31.69%. Results obtained at a speed of 200 rpm obtained an optimum absorption capacity of 25,0948 mg/g.
Optimasi Penyerapan Rhodamin B Menggunakan Biosorben Dari Kulit Buah Matoa Dengan Metode Batch Mutia, Nuraini Cut; Nasra, Edi; Kurniawati, Desy
Periodic Vol 12, No 3 (2023): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/periodic.v12i3.118507

Abstract

Research Optimizing the absorption of rhodamine b dye has been carried out using the batch method with biosorbent from matoa skin. This study aims to determine the optimum conditions of each parameter used and determine the value of the absorption capacity of matoa skin against Rhodamine B. Variations in particle size used for biosorption of rhodamine b were 106 µm, 150 µm, 250 µm, and 425 µm, while variations in contact time ranged from 30 minutes to 180 minutes with an interval of 30 minutes. The result of measuring the maximum wavelength of rhodamine b dye using a UV-Vis spectrophotometer is 554 nm with an absorbance value of 0.245. For variations in particle size, the optimum adsorption capacity was 71.08 mg/g at 106 µm, while for variations in contact time, the optimum adsorption capacity was 72.85 mg/g at 150 minutes. In this study, matoa peel has the potential to be used as an alternative biosorbent in the absorption of rhodamine b.
Jamur Endofitik BJS-3 Asosiasi Sambiloto (Andrographis paniculata): Skiring Fitokimia dan Aktivitas Antioksidan: Endophytic Fungal BJS-3 Associated Sambiloto (Andrographis paniculata): Screening Phytochemistry and Antioxidant Activity Riga Riga; Mauline Adia Silvani; Wandi Oktria; Edi Nasra; Desy Kurniawati; Dewi Meliati Agustini
Jurnal Sains dan Kesehatan Vol. 5 No. 5 (2023): J. Sains Kes.
Publisher : Fakultas Farmasi, Universitas Mulawarman, Samarinda, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25026/jsk.v5i5.2034

Abstract

Sambiloto (Andrographis paniculata) is a member of the Acanthaceae family reported to synthesis various bioactive compounds and has biological activities. One of the activities is antioxidant. An alternative source of searching for antioxidant compounds from Sambiloto is its endophytic fungi. The research aims to examine the content of secondary metabolites and determine the antioxidant activity of the BJS-3 endophytic fungus associated with Sambiloto seeds. The steps of the research were inoculation, optimization, fermentation, as well as extraction using ethyl acetate to obtain crude extract (EtOAc). Crude extract of fungal BJS-3 was evaluated for their phytochemical screening and antioxidant activity. The results of the phytochemical test on the endophytic fungus BJS-3 showed positive for terpenoids and phenolic compounds. Furthermore, antioxidant actitvity of extract of fungal BJS-3 was categorized as strong antioxidant properties (IC50 = 67.58 ppm). Keywords:          Antioxidant, Andrographis paniculata, endophytic fungi   Abstrak Sambiloto (Andrographis paniculata) adalah salah satu anggota keluarga Acanthaceae yang mampu mensintesis beragam senyawa bioaktif dan memiliki aktivitas biologis. Salah satu aktivitas tersebut adalah antioksidan. Sumber alternatif pencarian metabolit sekunder dengan aktivitas antioksidan dari sambiloto adalah dengan memanfaatkan jamur endofitik. Penelitian ini bertujuan untuk menguji kandungan metabolit sekunder dan menentukan sifat antioksidan (IC50) dari jamur BJS-3 yang berasosiasi dengan biji sambiloto. Tahapan riset ini meliputi inokulasi, optimasi, fermentasi, dan ekstraksi dengan pelarut etil asetat dan diperoleh ekstrak etil asetat (EtOAc). Ekstrak EtOAc jamur BJS-3 tersebut dianalisis kandungan metabolit sekunder dan sifat antioksidannya. Hasil uji fitokimia pada jamur endofitik BJS-3 menunjukkan positif bahwa ekstrak tersebut mengandung terpenoid dan senyawa fenolik. Sementara itu, uji aktivitas antioksidan mengindikasikan bahwa ekstrak jamur BJS-3 berpotensi sebagai agen antioksidan yang tergolong kuat (IC50 = 67,58 ppm). Kata Kunci:         Antioksidan, Andrographis paniculata, jamur endofitik
Pengaruh pH dan Konsentrasi Ampas Kulit Durian (Durio Zibethinus L.) Terhadap Penyerapan Ion Logam Tembaga (II) dengan Metode Batch Bastian, Vadianda; Nasra, Edi
Periodic Vol 13, No 3 (2024): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/periodic.v13i3.125459

Abstract

One of the effective methods in handling the impact of pollution by copper metal is the biosorption method using durian peel powder (Durio Zibethinus L.). The purpose of this research is to determine the optimum absorption conditions and the optimum capacity for absorption of copper metal ions (Cu2+) using the batch method with variations in pH, concentration, stirring speed, contact time, and mass of biosorbent. The results of the research showed that the optimum conditions for the absorption of Cu2+ metal ions were at pH 6, concentration of 220 ppm, stirring speed of 250 rpm, contact time of 90 minutes and mass of biosorbent 0,4 gram was 7,788 mg/g. The adsorption isotherm of Cu2+ metal with durian skin biosorbent (Durio Zibethinus L.) tends to follow the Langmuir isotherm equation with a determinant coefficient (R) of 0,1854. Durian peel powder was characterized by the FTIR instrument, before being activated, after being activated, and after contacting the analyte there were functional groups, namely hydroxyl (O-H), alkene (C=C), carbonyl (C-O), and ether (-COC) groups.  
Pengaruh Kecepatan Pengadukan dan Waktu Kontak Ampas Kulit Durian (Durio Zibethinus L.) terhadap Penyerapan Ion Logam Tembaga (II) dengan Metode Batch Bastian, Vadianda; Nasra, Edi
MASALIQ Vol 4 No 1 (2024): JANUARI
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/masaliq.v4i1.2094

Abstract

One of the effective methods in handling the impact of pollution by copper ion is the biosorption method using durian peel powder (Durio Zibethinus L.). The purpose of this research is to determine the optimum absorption conditions and the optimum capacity for absorption of copper metal ions (Cu2+) using the batch method with variations in pH, concentration, stirring speed, contact time, and mass of biosorbent. The results of the research showed that the optimum conditions for the absorption of Cu2+ metal ions were at pH 6, concentration of 220 ppm, stirring speed of 250 rpm, contact time of 90 minutes and mass of biosorbent 0,4 gram was 7,788 mg/g. The adsorption isotherm of Cu2+ metal with durian skin biosorbent (Durio Zibethinus L.) tends to follow the Langmuir isotherm equation with a determinant coefficient (R) of 0,1854. Durian peel powder was characterized by the FTIR instrument, before being activated, after being activated, and after contacting the analyte there were functional groups, namely hydroxyl (O-H), alkene (C=C), carbonyl (C-O), and ether (-COC) groups.
Kajian Fitokimia Ekstrak Metanol Daun Belimbing Wuluh (Averrhoa bilimbi L.) Asal Kecamatan Koto Tangah Serli, Salsabilla Putri; Riga, Riga; Nasra, Edi
MASALIQ Vol 4 No 5 (2024): SEPTEMBER
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/masaliq.v4i5.3447

Abstract

Secondary metabolites are compounds synthesized by plants, microbes, or animals through biosynthesis that are used to support life. The content of secondary metabolites in plants is often used as traditional medicine. In this research, samples of wuluh starfruit leaves (Averrhoa blimbi L.) were used as traditional medicine to treat coughs, diabetes, and others. The purpose of this study is to determine the secondary metabolite content in wuluh starfruit leaves (A. Blimbi L.) in Koto Tengah district through maceration, phytochemical, and thin layer chromatography methods. This research was carried out through a sample preparation process, maceration using methanol as a solvent, phytochemical tests to test the content of alkaloids, flavonoids, saponins, and polyphenols/tannins by looking at the color change in the sample, and confirmation through thin layer chromatography by looking at the color and Rf value. The secondary metabolite test revealed that belimbing wuluh leaves were positive for tannins, flavonoids, alkaloids, and saponins.
Optimation of Fe3+ Ion Desorption Using Sulfonate Modified Silica Gel-GPTMS Elvina, Elvina; Oktavia, Budhi; Nasra, Edi; Zainul, Rahadian
Jurnal Pijar Mipa Vol. 19 No. 5 (2024): September 2024
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v19i5.7453

Abstract

Silica gel is one of the adsorbents widely used in adsorption, but silica gel has a low ability to absorb metals. Hence, modifications need to be made to improve it. Silica gel modified using sulfonate groups from monosodium salt compound of 4-amino-5-hydroxy-2,7-naphthalene disulfonic acid using GPTMS coupling compound for adsorption and desorption of Fe3+ ions by column method was carried out. The adsorption process of Fe3+ ions using silica gel-GPTMS-sulfonate has been carried out in previous studies and obtained an optimum state at pH 6 and a concentration of 20 ppm. After the adsorption process is carried out, the desorption process is continued with variations in the type of desorption eluent and concentration variations. The types of desorption agents are NaCl, CaCl2, HCl, and HNO3, with the optimum desorption agent being HNO3 with a release of 0.077517 mg of Fe3+ ions from 0.1587403 mg of Fe3+ ions absorbed and a desorption percentage of 48.83%. The concentration variations are 0.5 M, 1 M, 2.5 M, and 5 M, with an optimum concentration of 2.5 M HNO3 with a release of 0.098505 mg Fe3+ ions and a desorption percentage of 64.43%.
ANALISIS AKTIVITAS ANTIOKSIDAN JAMUR ENDOFITIK DDP YANG BERKOLONISASI DENGAN DAUN DEWA (GYNURA SEGETUM) DENGAN METODE DPPH (2,2-DEFENIL-1-PIKRILHIRAZIL) Nur Meisinca, Dzulhijjah; Riga, Riga; Adia Silvani, Mauline; Oktria, Wandi; Nasra, Edi; Kurniawati, Desi; Oktavia Dewita, Febby; Dwi Rahma Doni, Deani; Khairiyah, Ghina
Jurnal Farmamedika (Pharmamedika Journal) Vol 9 No 2 (2024): Jurnal Farmamedika (Pharmamedica Journal)
Publisher : Sekolah Tinggi Teknologi Industri dan Farmasi Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47219/ath.v9i2.371

Abstract

Daun dewa (Gynura segetum) tergolong ke dalam famili Asteraceae dan juga termasuk sebagai tanaman obat untuk mengatasi berbagai penyakit. Daun dewa menghasilkan senyawa aktif yang memiliki bioakivitas, salah satunya bersifat antioksidan. Senyawa antioksidan dari tumbuhan ini dapat dieksplorasi lebih lanjut melalui jamur endofitik. Tujuan dari penelitian ini yaitu untuk menganalis metabolit sekunder dan menguji aktivitas antioksidan dari jamur endotifik DDP yang berkolonisasi dengan daun dewa menggunakan media nasi sebagai media pertumbuhan. Hasil analisis fitokimia membuktikan bahwa ekstrak etil asetat (EtOAc) jamur endofitik DDP menunjukkan hasil positif terpenoid dan alkaloid. Analisis aktivitas antioksidan menggunakan metode DPPH (2,2-Defenil-1-Pikrilhirazil) juga dilakukan pada studi ini. Nilai IC50 yang diperoleh yaitu 77,83 ppm yang menunjukkan ekstrak jamur endofitik DDP memiliki aktivitas antioksidan yang kuat.
The Chemistry Teacher Activities on The Training of Project Based Learning Teaching Materials Digitalisation Suryani, Okta; Sari, Trisna Kumala; Riga, Riga; Mawardi, Mawardi; Yuhelman, Nofri; Nasra, Edi; Velly, Aglin; Rahmad, Nafisah Yulia
Hydrogen: Jurnal Kependidikan Kimia Vol 12, No 6 (2024): December 2024
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v12i6.13495

Abstract

This activity is the second year of community service which is a continuation of training activities and making digital teaching materials to support project-based learning (PjBL) in sekolah penggerak for chemistry teachers in Padang city. This second year of community service activities has the theme of training to digitise project-based learning teaching materials developed at the Chemistry Musyawarah Guru Mata Pelajaran (MGMP) in Padang city. This activity aims to provide direction to Padang city chemistry teachers in implementing digital teaching materials. This community service was carried out in the lecture building of FMIPA Universitas Negeri Padang on 9 August, 16 August, and 23 August 2024. The implementation methods carried out in this community service activity are: (1) conducting a needs analysis, knowing the situation of teachers towards the implementation of PjBL-based learning through questionnaires distributed, (2) delivering material to community service participants related to PjBL and an overview of teaching materials that have been designed using the PjBL learning model explained by the speaker, then (3) delivery of materials and discussions related to differentiated learning with the PJBl learning model, and (4) delivering material related to the digitalisation of project-based teaching materials or PjBL using liveworksheet. The results of the service activities carried out can provide motivation, provide experience, and understanding for Padang city chemistry teachers regarding the digitalisation of project-based learning teaching materials so that chemistry teachers in Padang city can prepare digital chemistry teaching materials, especially with liveworksheets using the PjBL model that can assist learning activities so that learning can run effectively and efficiently in accordance with the demands of the curriculum and the times.
Pengaruh Konsentrasi dan Waktu Kontak pada Adsorpsi Ion Logam Pb2+ Menggunakan Adsorben Xerogel dari Abu Terbang (Fly Ash) Adam, Wahyu; Nasra, Edi; Benti Etika, Sri; Alizar, Alizar
Jurnal Pendidikan Tambusai Vol. 9 No. 1 (2025)
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai, Riau, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jptam.v9i1.24847

Abstract

Ion timbal (II) merupakan ion berbahaya yang dihasilkan dari limbah industri dan sangat berbahaya bagi lingkungan. Metode yang dapat digunakan untuk mengatasi limbah logam timbal yaitu dengan metode adsorpsi. Pada penelitian ini adsorben yang digunakan yaitu xerogel yang disintesis dari abu terbang (fly ash). Tujuan penelitian ini untuk menentuan kondisi optimum dan kapasitas penyerapan ion Pb2+. Penelitian ini dilakukan dengan metode batch, dengan konsentrasi (280, 300, 320, 340, dan 360) ppm, dan waktu kontak (20, 40, 60, 80, dan 100) menit. Hasil penelitian menunjukkan bahwa kondisi optimum diperoleh pada konsentrasi 340 ppm dan waktu kontak 60 menit, dengan kapasitas penyerapan optimum 78,37 mg/g. Model isoterm yang sesuai pada adsorpsi ini yaitu isoterm Freundlich dengan nilai R2 = 0,9968.
Co-Authors Adam, Wahyu Ade Elsa Betavia Adia Silvani, Mauline Afriani, Reza Ahmad Raisan R.P Aini, Syamsi Ali Amran Ali Amran Alizar Alizar Alizar, Alizar Amrin . Amrin Amrin Amrin Amrin Ananda Putra Ananda Putra Andini, Namira Tri Anjelia, Mariza Annisa Haqqu Azhma Ulya Bahrizal Bahrizal Bahrizal Bahrizal Bahrizal Bahrizal Bahrizal Bahrizal Bastian, Vadianda Benti Etika, Sri Berlian, Syakhinah Berliana Salsabila Budhi Oktavia Burma, Resna Chairunnisa Chairunnisa Chindikia, Ilmy Cynthia Dela Gustika Della Rosalynna Stiadi Desi Kurniawati Deski Beri Deski Pahdinol Desy Kurniawati DESY KURNIAWATI Desy Kurniawati Desy Kurniawati Desy Kurniawati Desy Kurniawati Desy Kurniawaty Deva Indriyani Devi Lestari Dewi Kristina Dewi Meliati Agustini Dini Anggraini, Dini Dony Yulvi Dwi Hartati Dwi Rahma Doni, Deani Edwina Zainal Eka Yusmita Elvina Elvina Fadhilah Fadhilah Fadilla Yuri Merti Fadli, Sukma Bening Fahilatul Syukro Fajriah Azra Fatimah Jora Fatimah Mutiara R, Siti Fatmawati, Rani Fauzan Aulia Akbar Febbi Rahmayuni Febri Andini Putri Fitri Amelia Fitria, Fadhila Geita Yulyan Firel Haqqu, Annisa Hardeli Hardeli Hardeli Hardeli Hary Sanjaya Hary Sanjaya Hary Sanjaya Hayuni, Sri Heditama, Muhammad Raffi Hendrawansyah Putra Hesty Parbuntari Ikhsany, Diva Indang Dewata Isnaeni Isnaeni Jayawarsa, A.A. Ketut Juli Manda Sari Kalmar Nizar, Umar Kasuma Warda Ningsih, Sherly Khairiyah, Ghina Khalisa Khalisa Laura Dwi Rha Hayu Lismawati, Maya M Bachri Amran M. Iqbal S.G Malinda, Tasya Mauline Adia Silvani Melida Selvita Miftahul Khair Minda Azhar Miranda Dwi Putri Gultom Monika Yulia Mufi Nasda Muhamad Daviya Nur Fauzi Muhammad Farhan Muhammad Patly Muhammad Satrio Hutomo Mulia, Melindra Mutia, Nuraini Cut Nandi, Mila Lusy Tri Nesya Febi Utami Nizar, Umar Kalmar Nofri Yuhelman Nugraha, Putri Nur Hafni Hasibuan Nur Meisinca, Dzulhijjah Nuzulia Yona Oktavia Dewita, Febby Oktria, Wandi Patricia, Popi Pebriani Pebriani Pernadi, Niza Lian Pratama, Rafy Putra, Ananda Putri Fatimah Putri Nugraha Putri, Anisa Dwi Putri, Riska Himaylia Putri, Sinta Eka R, Yoanatul Hasanah Raden Mohamad Herdian Bhakti Rahadian Zainul Rahayu, Yanna Rahmad, Nafisah Yulia Rahmatika, Aljumaatul Rahmi, Fathaniah Raviqa Ranti Septiana Ridho Hermawan Riga Riga Riga, Riga Riva Silvia Romy Dwipa Yamesa Away Roza Herlina Sabrina, Joya Saddam Husein, Saddam Sari, Trisna Kumala Satrio Prinandito Septian Budiman Serli, Salsabilla Putri Sherly Kasuma Warda Ningsih Sherly Kasuma Warda Ningsih Sherly Kasuma Warda Ningsih Sintha Hafizhah Yonel Siti Fatimah Mutiara R Sri Benti Etika Sri Benti Etika Suryani, Okta Sutan M Razali Syamsi Aini Syuhada Yurnas Taufik Hidayat Tessa Faradilla Tri Nandi, Mila Lusy Trihanto Setiadi Trisna Kumala Sari Umar Kalmar Nizar Umar Kalmar Nizar Umar Kalmar Nizar Umar Kalmar Nizar Velly, Aglin Visca Alisia Arianti Wandi Oktria Widya Pasema Yeni, Isra Yeniwati Yeniwati Yollafebrisa Wizul Yollafebrisa Wizul Yulia Mona Liza Yusmaita, Eka Yusuf . Zonalia Fitriza Zul Afkar