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All Journal International Journal of Renewable Energy Development Jurnal Riset Kimia Biology, Medicine, & Natural Product Chemistry CHEMPUBLISH JOURNAL IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Jurnal Zarah Indonesian Journal of Chemistry Eksakta : Berkala Ilmiah Bidang MIPA Molekul: Jurnal Ilmiah Kimia Majalah Kedokteran Andalas Majalah Farmasetika Warta Pengabdian Andalas: Jurnal Ilmiah Pengembangan Dan Penerapan Ipteks Hydrogen: Jurnal Kependidikan Kimia Indonesian Journal of Chemical Studies (Indones. J. Chem. Stud.) Molekul: Jurnal Ilmiah Kimia International Journal of Renewable Energy Development Bulletin of Chemical Reaction Engineering & Catalysis Journal of The Indonesian Society of Integrated Chemistry Jurnal Kimia Unand Biodiversitas Journal of Biological Diversity
Mai Efdi
Departemen Kimia FMIPA Universitas Andalas
Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Public Health Social Sciences Other

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A Triterpenoid Compound From The Leaves of Lantana camaraLinn. Kartika MZ Kartika; Suryati Suryati; Mai Efdi
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 3, No 1 (2018): February 2018
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v3.i1.18

Abstract

A triterpenoid compound has been isolated from the ethyl acetate fraction of Lantana camaraLinn leaves. The isolation was performed by chromatography of gravitation column with a gradient elution system using hexane, ethyl acetate and methanol. Purification by recrystallization produces a white solid (20 mg) with a melting point of 288-289 °C. The results of elucidation of UV, IR, 1H-NMR, 13C-NMR, HMBC, HSQC, DEPT and COSY spectral data, it is known that the isolated triterpenoid compound is 22β-angeloyloxy-9-hydroxy-3-oxo-olean-12- en-28-oicacid with molecular formula C35H52O6. Keywords—Lantana camaraLinn, Chromatography of gravitation column, Triterpenoid, C35H52O6
Isolation of Flavonoid Compound and Antioxidant Activity of Salix tetrasperma Roxb. Leaves Ria Januarti; Adlis Santoni; Mai Efdi
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 4, No 2 (2019): June 2019
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v4.i2.42

Abstract

Salix Tetrasperma Roxb. is a plant that found in Indonesia were used as traditional medicine such as diabetes and wound healing. In this study, a flavonoid compound of the ethyl acetate extract of Salix tetrasperma Roxb. leaves was isolated by chromatography technique and the antioxidant activity was determined by DPPH assay. The isolation led to obtain 5,7-dihydroxy-3'-methoxyflavone based on NMR spectra. The ethyl acetate extract exhibited the highest antioxidant activity with the IC50 is 65.89 µg/mL. This study shows that the Salix tetrasperma Roxb. has good potential as source of antioxidant agent.
Upaya Penanggulangan Pandemi Covid-19 di Panti Asuhan Al-Falah, Padang Refinel Refinel; Emriadi Emriadi; Safni Safni; Mai Efdi; Syukri Syukri; Suryati Suryati; Marniati Salim; Imelda Imelda; Ibnu Irawan; Putri Arwanda
Warta Pengabdian Andalas Vol 27 No 2 (2020)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat (LPPM) Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jwa.27.2.113-118.2020

Abstract

The Islamic Boarding School and Orphanage Al-Falah Padang are located on Bypass Km 16, behind the West Sumatra TVRI office. Al-Falah Boarding School has 367 students, 265 of them are foster children in the Orphanage. Inadequate construction and classrooms, the students and foster children of the Islamic Boarding School and the Al-Falah Orphanage studied and lived their daily lives. The occurrence of the Covid-19 pandemic certainly affected the daily activities and learning activities of the orphanage children. Especially, the fulfillment of their basic needs. Moreover, the main problem of Covid-19 is not only about the effects by the virus on sufferers but also about its rapid transmission. Therefore, to help the crisis due to Covid-19, several lecturers and students from the Faculty of Mathematics and Natural Sciences Universitas Andalas (Unand) provided staple foods, money, masks, hand sanitizers, and disinfectants for residents of the Al-Falah Padang orphanage. It is hoped that can help the residents of the Al-Falah orphanage who certainly feel the impact of the Covid-19 pandemic.
The potency of secondary metabolites from traditional medicine plants as anti cancer agent Mai Efdi
Majalah Kedokteran Andalas Vol 37 (2014): Supplement 2 | Published in December 2014
Publisher : Faculty of Medicine, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (327.498 KB)

Abstract

The seconday metabolites from traditional medicine plants have played an important role incancer treatment. Exploration of natural active compounds from medicinal plants for cancertreatment has attracted substantial attention worldwide. Several secondary metabolites thatwere isolated fom the plants, such as vincristne, vinblastine, campthothecins, have been usedhave been used clinically for over 40 years. Numerous techniques have been developedto obtain compounds for drug discovery including isolation from plants, synthetic chemistry,screening bioassays. As part of efforts to discover phytochemicals as anticancer agent, ourgroup were isolated several compunds mainly from Annonaceae and Melliaceae family thatshowed active againts human leukemia HL-60 cells.
Antioxidant Flavonoid Glycoside from Leaves of Cacao Mistletoe (Scurrula ferruginea (Jack) Danser) Mai Efdi; Dara Pratama; Afrizal Itam; Tia Okselni
Indonesian Journal of Chemistry ARTICLE IN PRESS
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.72133

Abstract

Scurrula ferruginea (Jack) Danser is a folk medicine to treat several diseases. S. ferruginea is the mistletoe that lives by deriving nutrients from the host. Hence, the host has a significant effect on the biological activities and bioactive components of S. ferruginea. In this study, the leaves of S. ferruginea were macerated by methanol solvent to extract the chemical components and fractionated by hexane and ethyl acetate solvent, respectively, to separate organic compounds. The biological activity of crude extracts as the antioxidant was investigated by 2,2-diphenyl-1-picrylhydrazyl (DPPH) method. The result showed that the highest antioxidant activity was obtained from the ethyl acetate fraction with the IC50 of 10.88 ± 0.39 µg/mL. Furthermore, the trituration method used several solvents to isolate secondary metabolites from the initial crude methanol extract. This purification process produced a flavonoid compound of quercitrin. The antioxidant activity of quercitrin was also determined by the DPPH method. The result showed that this compound has stronger activity than the crude extracts with the IC50 of 5.95 ± 0.11 µg/mL. This study demonstrated that cacao mistletoe of S. ferruginea may have the potential activity to treat the diseases caused by the presence of free radicals.
A Cytotoxic Compound from n-Hexane Fraction of Lantana camara Linn Leaves Suryati Suryati; Yuni Malasari; Mai Efdi; Elida Mardiah
Molekul Vol 14, No 1 (2019)
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (271.155 KB) | DOI: 10.20884/1.jm.2019.14.1.477

Abstract

In this study, one triterpenoid compound from n-hexane fraction of Lantana camaraLinn leaves has cytotoxic activity was isolated. Isolation was carried out using gravity chromatographycolumnand purification by recrystallization method. Isolated compound was obtained white solid with melting point 252-253oC. The structure of isolated compound was elucidated using spectroscopic analysis Ultraviolet (UV), Infrared (IR), 1H-Nuclear Magnetic Resonance (1H-NMR), 13C-Nuclear Magnetic Resonance (13C-NMR) Heteronuclear Multiple Bond Connectivity (HMBC),  Heteronuclear Multiple Quantum Correlation (HMQC), Distortionless Enhancement Polarization Transfer (DEPT) and comparative literature data, identified as Lantadene A (22β-angeloyloxy-3-oxoolean-12-en-28-oic-acid) with molecule formula C35H52O5. The Lantadene A compound was evaluated for cytotoxic activity against shrimp larvae Artemia SalinaLeach using Brine Shrimp Lethality Test(BSLT) method, showed strong cytotoxic activity with an LC50value of 48.97 µg/mL.
Synthesis of Graphene Oxide Enriched Natural Kaolinite Clay and Its Application For Biodiesel Production Syukri Syukri; Fadhil Ferdian; Yetria Rilda; Yulia Eka Putri; Mai Efdi; Upita Septiani
International Journal of Renewable Energy Development Vol 10, No 2 (2021): May 2021
Publisher : Center of Biomass & Renewable Energy, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.2021.32915

Abstract

A heterogeneous catalyst is one type of catalyst which is very effective for biodiesel production; thus, in this study, a novel heterogeneous bifunctional catalyst was prepared by kaolinite clay obtained from Padang of West Sumatera and impregnated with graphene oxide and potassium hydroxide (KOH) for the simultaneous esterification and transesterification reactions of palm oil into biodiesel. For comparison, two other catalysts were also prepared. The first catalyst was the same clay which was heated at 450ºC for 4 hours, and the second catalyst was the same clay which was impregnated with potassium hydroxide (KOH) only. The three catalysts were characterized using X-Ray Fluorescence (XRF), X-Ray Diffraction (XRD), and Fourier Transform Infra-Red (FTIR). XRF analysis showed that the clay sample’s main composition consisted of 54% silica, 35% alumina, and 7% hematite. The XRD analysis results showed that the most dominant crystal composition was quartz, kaolinite, and hematite. The analysis results using FTIR showed a change in intensity and shift in wave numbers indicating a cation exchange. The catalytic activity test was carried out with a ratio of oil and methanol 1:6, catalyst amount 5%, 60ºC reaction temperature, and 4 hours of reaction time.The results showed that the catalytic activity of clays impregnated with graphene oxide and potassium hydroxide was better with a yield of 58% compared to clays without impregnation and other clays that were only impregnated with KOH under the yields of 0.8% and 0.4%, respectively
Antioxidant Activities Extracts N-Hexane, Ethyl Acetate and Methanol of Limau Sundai (Citrus nobilis Lour) Peels Melindra Mulia; Mai Efdi; Afrizal Afrizal; Niza Lian Pernadi; Devi Purnamasari
EKSAKTA: Berkala Ilmiah Bidang MIPA Vol. 23 No. 04 (2022): Eksakta: Berkala Ilmiah Bidang MIPA (E-ISSN : 2549-7464)
Publisher : Faculty of Mathematics and Natural Sciences (FMIPA), Universitas Negeri Padang, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/eksakta/vol23-iss04/339

Abstract

The Limau Sundai plant (Citrus Nobilis Lour) is widely known in West Sumatra. The fruit of this plant is commonly consumed as a cooking spice. This antioxidant activity test research aims to find out the potential of Lime Sundai peel as a source of antioxidant compounds. The peel of Limau Sundai fruit is ensnared with methanol solvent and concentrated using a rotary evaporator to obtain a coarse extract. The crude extract is then partitioned successively in n-hexane and ethyl acetate so that n-hexane, ethyl acetate, and methanol extracts are obtained. Sundai lime peel has good antioxidant activity against DPPH, which is shown in the ethyl fraction of acetate, methanol, and liquid methanol. The antioxidant activity of the three fractions is smaller than vitamin C and more significant than the hexane fraction. In the ethyl acetate, methanol and methanol/aqueous fractions with concentrations of 1076, 1822, and 1372 ppm in a row can reduce 50% of DPPH radical activity.
Synthesis of Graphene Oxide Enriched Natural Kaolinite Clay and Its Application For Biodiesel Production Syukri Syukri; Fadhil Ferdian; Yetria Rilda; Yulia Eka Putri; Mai Efdi; Upita Septiani
International Journal of Renewable Energy Development Vol 10, No 2 (2021): May 2021
Publisher : Center of Biomass & Renewable Energy, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.2021.32915

Abstract

A heterogeneous catalyst is one type of catalyst which is very effective for biodiesel production; thus, in this study, a novel heterogeneous bifunctional catalyst was prepared by kaolinite clay obtained from Padang of West Sumatera and impregnated with graphene oxide and potassium hydroxide (KOH) for the simultaneous esterification and transesterification reactions of palm oil into biodiesel. For comparison, two other catalysts were also prepared. The first catalyst was the same clay which was heated at 450ºC for 4 hours, and the second catalyst was the same clay which was impregnated with potassium hydroxide (KOH) only. The three catalysts were characterized using X-Ray Fluorescence (XRF), X-Ray Diffraction (XRD), and Fourier Transform Infra-Red (FTIR). XRF analysis showed that the clay sample’s main composition consisted of 54% silica, 35% alumina, and 7% hematite. The XRD analysis results showed that the most dominant crystal composition was quartz, kaolinite, and hematite. The analysis results using FTIR showed a change in intensity and shift in wave numbers indicating a cation exchange. The catalytic activity test was carried out with a ratio of oil and methanol 1:6, catalyst amount 5%, 60ºC reaction temperature, and 4 hours of reaction time.The results showed that the catalytic activity of clays impregnated with graphene oxide and potassium hydroxide was better with a yield of 58% compared to clays without impregnation and other clays that were only impregnated with KOH under the yields of 0.8% and 0.4%, respectively
Natural Clay of Pasaman Barat Enriched by CaO of Chicken Eggshells as Catalyst for Biodiesel Production Syukri Syukri; Kevin Septioga; Syukri Arief; Yulia Eka Putri; Mai Efdi; Upita Septiani
Bulletin of Chemical Reaction Engineering & Catalysis 2020: BCREC Volume 15 Issue 3 Year 2020 (December 2020)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.15.3.8097.662-673

Abstract

This study uses broiler chicken eggshells to enhance catalytic activity of clay obtained from Pasaman Barat (West Sumatra, Indonesia) in lab-scale biodiesel production. The eggshell is a source of calcium oxide (CaO) which operates as a catalyst when mixed with the clay (Ca-Clay). Two other catalysts were also prepared as comparisons by 1) heating the clay at 800 oC for 6 hours (P-Clay), 2) mixing the P-Clay with KOH (K-Clay). An X-ray Fluorescence (XRF) showed the elemental composition of Ca-Clay contained Ca, Si, Al, and Fe. An X-ray Diffraction (XRD) showed the formation of highly crystalline CaO in the Ca-Clay with the main peak at 2θ = 37.27o. The Fourier Transform Infra Red (FTIR) spectrum showed an absorption peak in the range of 700-900 cm-1 indicating Ca-O stretching demonstrating successful incorporation of the CaO into the clay. The catalytic activity test showed the Ca-Clay had a higher catalytic performance than P-Clay and K-Clay in terms of the yield of biodiesel produced (73%). Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0). 
Co-Authors -, Sabariah A.A. Ketut Agung Cahyawan W ABDI WIRA SEPTAMA Abdi Wira Septama Adlis Santoni Afritunando, Yogi Afrizal Afrizal Afrizal Afrizal Afrizal Afrizal Afrizal Afrizal Itam Aju Deska Akmel Suhada Alvionita, Jessica Andre Priandoko Ardi, Lucy Prima Aried Eriadi Arifah, Zil Aziz, Enda Desriansyah Bashari, Muhammad Hasan Beginer Subhan Bumali, Restu Bustanul Arifin Bustanul Arifin Bustanul Arifin Dara Pratama Defitriani, Anggun Deswati Deswati Devi Purnamasari Dian Handayani Dian Kumala Sari, Dian Kumala Dira Hefni Djaswir Darwis Djaswir Darwis Efahmi, Efahmi Elida Mardiah Emil Salim Emriadi - Enda Desriansyah Aziz Erizal Zaini Fadhil Ferdian Farid Algani Fatma Sri Wahyuni FEBRIA ELVY SUSANTI Febriana, Nindi Antika Hamzar Suyani HERLAND SATRIAWAN Hermansyah Aziz Ibnu Irawan Ida Ayu Putu Sri Widnyani Imelda Imelda Jessica Alvionita Kartika MZ Kartika MZ Kartika Kevin Septioga Koketsu, Mamoru Kunitomo Watanabe Kuntum Suci Mawarni Lestari Ningsih M. Iqbal Alfarisyi M. Iqbal Alfarisyi Mamoru Koketsu Marniati Salim Masyerli, Scify Bilqis Nawafi Matlal Fajri Alif Mochamad Untung Kurnia Agung Mudinillah, Adam Mulia, Melindra NIKY AFRILIA ZAIMI Nindi Antika Febriana Niza Lian Pernadi Novesar Jamarun Nurainas Nurainas Nurul Fadhillah Nurul Hanifah NURYANI TURABBY Olly Norita Tetra Putri Arwanda Rahmadani, Indah Refilda Refilda Refinel - REGINA ANDAYANI Ria Januarti Ridho Sahary Adha Sabariah - Safni Safni Salim, Emil Sari Ramadhani Solly Aryza Suhada, Akmel Suhada, Akmel Suryati Suryati Suryati Suryati Suryati Susanti, Febria Elvy SYAFRIZAYANTI SYAFRIZAYANTI Syafrizayanti, Syafrizayanti Syukri - Syukri Arief Syukri Arief Syukri Syukri Tia Okselni TRINA EKAWATI TALLEI Upita Septiani Watanabe, Kunitomo Wulandari, Annisa Yefrida - Yeni Stiadi Yetria Rilda Yogi Afritunando Yosie Andriani Yulia Eka Putri, Yulia Eka Yulizar Yusuf Yuni Malasari Zilfa Zilfa Zulhadjri Zulhadjri