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All Journal Jurnal Fisika Unand Jurnal Riset Kimia SEMIRATA 2015 Jurnal Zarah ALCHEMY Jurnal Penelitian Kimia Communications in Science and Technology Jurnal Hilirisasi IPTEKS (JHI) Jurnal Ilmu Fisika Warta Pengabdian Andalas: Jurnal Ilmiah Pengembangan Dan Penerapan Ipteks
Olly Norita Tetra
Universitas Andalas
Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Dentistry Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Materials Science & Nanotechnology Medicine & Pharmacology Physics Public Health Social Sciences Veterinary Other

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Pembuatan Teh Daun Kelor untuk Peningkatan Ekonomi Masyarakat di Kecamatan Ulakan Tapakis, Padang Pariaman Matlal Fajri Alif; Yulizar Yusuf; Emriadi Emriadi; Deswati Deswati; Mai Efdi; Novesar Jamarun; Syukri Arief; Adlis Santoni; Bustanul Arifin; Suryati Suryati; Yetria Rilda; Safni Safni; Zilfa Zilfa; Olly Norita Tetra
Warta Pengabdian Andalas Vol 31 No 4 (2024)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat (LPPM) Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jwa.31.4.682-688.2024

Abstract

The Moringa plant, a tropical species, exhibits prolific growth and is abundantly present in Indonesia and other tropical regions worldwide. An extended lifespan, continuous flowering, and a high tolerance for elevated temperatures characterize it. Utilizing its components, including leaves, bark, seeds, and roots, this multifaceted plant is renowned for its therapeutic properties. The plant's antioxidants and various nutrients, including vitamins and minerals (iron, magnesium, vitamin B6, vitamin B2, vitamin C, and vitamin A), have led to studies on the plant's potential health benefits. In order to develop the local economy in Ulakan village, Padang Pariaman Regency, Moringa plants were processed by using the plant leaves to manufacture herbal tea, which can then be sold. This community service program was significant given the widespread presence and ease of cultivation of Moringa plants within the local region. The program involved the planning and selection of the activity site, the implementation of training sessions, and the assessment of the program's outcomes. The result of this community engagement initiative was the demonstrated interest of many participants in producing Moringa leaf tea.
Pembuatan Teh Daun Kelor untuk Peningkatan Ekonomi Masyarakat di Kecamatan Ulakan Tapakis, Padang Pariaman Matlal Fajri Alif; Yulizar Yusuf; Emriadi Emriadi; Deswati Deswati; Mai Efdi; Novesar Jamarun; Syukri Arief; Adlis Santoni; Bustanul Arifin; Suryati Suryati; Yetria Rilda; Safni Safni; Zilfa Zilfa; Olly Norita Tetra
Warta Pengabdian Andalas Vol 31 No 4 (2024)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat (LPPM) Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jwa.31.4.682-688.2024

Abstract

The Moringa plant, a tropical species, exhibits prolific growth and is abundantly present in Indonesia and other tropical regions worldwide. An extended lifespan, continuous flowering, and a high tolerance for elevated temperatures characterize it. Utilizing its components, including leaves, bark, seeds, and roots, this multifaceted plant is renowned for its therapeutic properties. The plant's antioxidants and various nutrients, including vitamins and minerals (iron, magnesium, vitamin B6, vitamin B2, vitamin C, and vitamin A), have led to studies on the plant's potential health benefits. In order to develop the local economy in Ulakan village, Padang Pariaman Regency, Moringa plants were processed by using the plant leaves to manufacture herbal tea, which can then be sold. This community service program was significant given the widespread presence and ease of cultivation of Moringa plants within the local region. The program involved the planning and selection of the activity site, the implementation of training sessions, and the assessment of the program's outcomes. The result of this community engagement initiative was the demonstrated interest of many participants in producing Moringa leaf tea.
Residue-free alkali-treated aluminum foil for water disinfection: A novel supernatant Mg(OH)2 fabrication method Ihsan, Taufiq; Novia, Fanny; Tetra, Olly Norita
Communications in Science and Technology Vol 10 No 1 (2025)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21924/cst.10.1.2025.1673

Abstract

This study presents a novel approach to fabricate alkali-treated aluminum (ATA) foil for point-of-use (POU) water disinfection, addressing the residue issue associated with conventional production methods. Traditional ATA foil production leaves a residual layer that hinders practicality in use. To cope with it, a supernatant Mg(OH)2 solution was employed, resulting in residue-free ATA foil. Two variants, conventional ATA foil (ATA foil-1) and supernatant-treated ATA foil (ATA foil-2), were fabricated and analyzed. Surface characterization revealed that ATA foil-2 had a smoother surface with fewer cracks while maintaining E. coli removal efficiency and methyl orange adsorption capacity similar as ATA foil-1. Maximum E. coli adsorption capacities were found at 572,967 CFU/cm2 for ATA foil-1 and 561,513 CFU/cm2 for ATA foil-2. Both foils achieved over 84% methyl orange removal, indicating adsorption as the primary removal mechanism. The findings demonstrated that the supernatant Mg(OH)2 method successfully produced residue-free ATA foil with comparable disinfection performance, thus eliminating the need for a washing step and enhancing its suitability for point-of-use water treatment applications.
Sintesis Karbon Aktif Dari Batang Jagung(Zea mays L.) dengan Metoda Dehidrasi Asam Untuk Aplikasi Elektroda Superkapasitor Tetra, Olly Norita; Syukri, Syukri; Santoni, Adlis; Deswati, Deswati; Fajarandi, Nabiel; Emriadi, Emriadi
Jurnal Fisika Unand Vol 13 No 6 (2024)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.13.6.834-842.2024

Abstract

Activated carbon from corn stalks (Zea mays L.) has been successfully synthesized by the dehydration method and used as a supercapacitor electrode. Corn stalk powder was dehydrated with 1 MH2SO4 and activated with 5 M NaOH at a carbon and activator mass ratio of 1:4 with a heating temperature of 800°C and an N2 gas heating rate of 10°C/minute for 1 hour. SEM characterization results show that heterogeneous pores have formed on the surface of corn stalk-activated carbon. EDX results showed a carbon percentage of 54.82%; this data is supported by FTIR results, which show several functional groups containing C and O atoms on the surface of activated carbon. Based on desorption adsorption isotherm analysis, the activated carbon shows H4 type with a specific surface area of 117.973m2/g, average pore diameter of 1.730 nm and total pore volume of 0.1021 cm3/g. Measurement of the electrochemical properties of corn stalk activated carbon with a three-electrode system and 3 M KOH electrolyte showed a specific capacitance value of 133.9 F/g, power density 225.2 W/kg and energy density 0.863 Wh/kg. The synthesis of activated carbon through the dehydration method offers advantages in terms of simplicity in preparation, low cost, shorter synthesis time and being environmentally friendly.
AKTIVITAS ANTIBAKTERI SENYAWA METABOLIT SEKUNDER DARI FRAKSI ETIL ASETAT DAUN LENGKENG (Dimocarpus longan Lour.) DAN UJI AKTIVITAS Arifin, Bustanul; Suryati; Tetra, Olly Norita; Maghfirah, Sucy
Jurnal Zarah Vol. 8 No. 2 (2020): October, 2020
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Maritim Raja Ali Haji

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31629/zarah.v8i2.2460

Abstract

Isolasi dan karakterisasi struktur senyawa metabolit sekunder dari fraksi etil asetat daun lengkeng (Dimocarpus longan Lour.) telah dilakukan dan dipelajari aktivitas antibakterinya. Isolasi dilakukan dengan teknik kromatografi kolom gravitasi menggunakan fasa diam silika gel dan fasa gerak n-heksana, etil asetat dan metanol dengan sistem elusi peningkatan kepolaran (SGP) dan isokratik. Pemurnian senyawa hasil isolasi dilakukan dengan cara triturasi. Senyawa murni hasil isolasi yang diperoleh berupa padatan putih dengan titik leleh 126-127°C dan menunjukkan uji positif triterpenoid dengan pereaksi Liebermann-Burchard. Karakterisasi struktur senyawa triterpenoid hasil isolasi menggunakan data spektrum UV menunjukkan bahwa triterpenoid hasil isolasi tidak memiliki ikatan rangkap berkonjugasi. Analisis data spektrum IR menunjukkan bahwa triterpenoid hasil isolasi memiliki pita serapan gugus OH (3326,46 cm-1 ), ikatan C–O (1270,80 cm-1 dan 1038,76 cm-1 ) dan geminal dimetil (1379,46 cm-1 ) yang merupakan ciri khas senyawa triterpenoid. Uji aktivitas antibakteri dilakukan dengan metode difusi, hasilnya menunjukkan senyawa triterpenoid memiliki daya hambat lemah dibanding dengan amoxicillin dalam menghambat pertumbuhan bakteri Staphylococcus aureus dan Escherichia coli.
Karbon Aktif Berpori dari Kulit Jeruk (Citrus Sinensis (L.) Osbeck) Melalui Metoda Dehidrasi untuk  Kapasitor Elektrokimia Tetra, Olly Norita; Aziz, Hermansyah; Deswati, Deswati; Aghna Kamiko, Awfa Joti
Jurnal Zarah Vol. 12 No. 1 (2024): April, 2024
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Maritim Raja Ali Haji

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31629/v53p4749

Abstract

Limbah kulit jeruk (Citrus sinensis (L.) Osbeck)  adalah precusor karbon aktif yang ramah lingkungan dan ekonomis untuk bahan elektroda kapasitor elektrokimia. Pada penelitian ini kulit jeruk telah dimanfaatkan sebagai precusor karbon aktif berpori melalui metoda dehidrasi dengan H2SO4 dan penambahan aktivator KOH pada suhu karbonisasi 400°C.  Karbon aktif yang dihasilkan terdiri dari karbon (71,42%) dan oksigen (28,58%), dengan volume pori  adalah   0,04281 cm³/g, diameter pori   2,57 nm  dan luas permukaan 140 m2/g dengan struktur dominan mesopori dan sedikit mikropori. Kinerja kapasitor elektrokimia dengan menggunakan karbon aktif dari kulit jeruk mencapai 10,75 mF dengan jumlah elektron 647,365 x 1015 elektron pada kondisi luas permukaan elektroda 3x3 cm2, ketebalan elektroda 0,15 cm dan elektrolit H3PO4 0,3 N. Hasil penelitian ini menunjukkan bahwa sintesis karbon aktif kulit jeruk melalui dehidrasi asam memberikan keuntungan dalam segi efisiensi biaya, waktu  dan proses preparasi  untuk menghasilkan karbon aktif  berpori dengan luas permukaan yang tinggi sebagai kapasitor elektrokimia berkinerja tinggi.
Sintesis Karbon Aktif dari Tongkol Jagung (Zea mays L.) dengan Metoda Dehidrasi sebagai Elektroda Superkapasitor Olly Norita Tetra; Raihan Hanif Aulia; Deswati Deswati
ALCHEMY Jurnal Penelitian Kimia Vol 21, No 2 (2025): September
Publisher : UNIVERSITAS SEBELAS MARET (UNS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/alchemy.21.2.96235.358-368

Abstract

Karbon aktif dari limbah tongkol jagung (Zea mays L.) telah disintesis dengan metoda dehidrasi untuk digunakan sebagai bahan elektroda superkapasitor. Bubuk tongkol jagung didehidrasi dengan H2SO4 1 M dan diaktivasi dengan KOH 5 M pada perbandingan massa karbon dan aktivator 1:2,5, dilanjutkan dengan karbonisasi pada 400 °C selama 1 jam. Hasil karakterisasi SEM menunjukkan terjadinya pembentukan pori pada permukaan karbon aktif dan hasil EDX memberikan persentase karbon 76,99%. Berdasarkan metode isoterm adsorpsi-desorpsi menunjukkan tipe isoterm IV dan histerisis tipe H3 yang menunjukkan struktur karbon aktif adalah mesopori, dengan luas permukaan spesifik 43,176 m2/g, volume pori 0,0855 cm3/g, dan distribusi pori rata-rata adalah 3,96 nm. Pengukuran sifat elektrokimia dari karbon aktif memberikan kemampuan untuk menyimpan energi dengan nilai kapasitansi spesifik sebesar 247,53 F/g dan rapat energi adalah 123,03 Wh/kg. Hasil EIS didapatkan kurva setengah lingkaran dari plot Nyquist yang menunjukkan adanya tahanan kecil untuk transfer muatan. Sintesis karbon aktif dengan metoda dehidrasi dan aktivasi menawarkan keuntungan seperti biaya rendah, proses preparasi sederhana, dan waktu sintesis singkat dengan kinerja elektrokimia yang tinggi untuk superkapasitor.Synthesis of Activated Carbon From Corncob (Zea mays L.) by Dehydration Method for Supercapacitor Electrode. Activated carbon from corn cob waste (Zea mays L.) has been synthesized using a dehydration method as a supercapacitor electrode material. Corn cob powder was dehydrated with 1 M H2SO4 and activated with 5 M KOH at a mass ratio of carbon and activator of 1:2.5, followed by carbonization at 400 °C for 1 hour. SEM characterization showed pore formation on the surface of activated carbon, and EDX results gave a carbon percentage of 76.99%. Based on the adsorption-desorption isotherm method, the isotherm type IV and hysteresis type H3 showed that the structure of activated carbon is mesoporous, with a specific surface area of 43.176 m2/g, a pore volume of 0.0855 cm3/g, and an average pore distribution of 3.96 nm. Measurement of the electrochemical properties of activated carbon provides the ability to store energy with a specific capacitance value of 247.53 F/g, and the energy density is 123.03 Wh/kg. EIS results obtained semicircular curves of Nyquist plots, indicating a slight resistance to charge transfer. The synthesis of activated carbon by the dehydration and activation method offers advantages such as low cost, simple preparation process, and short synthesis time with high electrochemical performance for supercapacitors.
Co-Authors - Frengky - Frengky -, Zaharasmi -, Zaharasmi A, Hermansyah A.A. Ketut Agung Cahyawan W Adlis Santoni Admin Alif Admin Alif Admin Alif Afdhal Muttaqin Aghna Kamiko, Awfa Joti Alif, Admin Asih Novia Bustanul Arifin Bustanul Arifin BUSTANUL ARIFIN Buty Kurnia Hamzani Chairunnisa, Nabila Putri Yusni Defri, Hadi Deswati Deswati Deswati Deswati Eka Kurniawaty Emriadi - Fadjar Goembira Fajarandi, Nabiel Fanny Novia Frenadin Adegustara Hermansyah A Hermansyah Aziz Indrawati Indrawati Joni, Rahma Kamiko, Awfa Joti Aghna Luh Putu Ratna Sundari Maghfirah, Sucy Mai Efdi Mai Efdi Matlal Fajri Alif Mega Silvia Nabiel Fajarandi Nofrita Nofrita Norman Ferdinal Novesar Jamarun Novesar Jamarun Novesar Jamarun Novia, Asih Perdana, Yola Azli Raihan Hanif Aulia Refinel - Roza Melia Usmita Safni Safni Suci Mulya Prima Suryati Suryati Suryati Suryati Syukri - Syukri Arief Syukri Arief Syukri Syukri Syukri Syukri Taufiq Ihsan Usmita, Roza Melia Wahyuni, Hanif Yetria Rilda Yola Azli Perdana Yulizar Yusuf Yulizar Yusuf Zaharasmi - Zaharasmi K Zaharasmi Kahar Zaharasmi Kahar Zilfa Zilfa Zulhadjri Zulhadjri