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All Journal Jurnal Periodic Jurusan Kimia UNP Eksakta : Berkala Ilmiah Bidang MIPA Pelita Eksakta SPIN: Jurnal Kimia & Pendidikan Kimia Indonesian Journal of Chemical Science and Technology Bhakti Nagori (Jurnal Pengabdian kepada Masyarakat)
Fitri Amelia
Universitas Negeri Padang
Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Education Energy Engineering Environmental Science Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Other

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Kelarutan Zat Warna Organik dalam Gelasi Mikroemulsi Water In Oil Sistem Air, Surfaktan Nonionik Tween 60 dan Sikloheksana Aulia Rahmi; Hary Sanjaya; Fitri Amelia; Ananda Putra
Jurnal Periodic Jurusan Kimia UNP Vol 11, No 2 (2022): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1305.764 KB) | DOI: 10.24036/p.v11i2.113390

Abstract

Organic dyes can be dissolved in the gelation of water in oil (w/o) microemulsion of the system of water (pH=4,5 and pH=9,5), nonionic surfactan tween 60 and cyclohexane. The purpose of this study was to prepare microemulsion gels using the sol-gel method, determine the solubility of organic dyes (turmeric and telang flower) in gelation, determine the value of density, refractive index of organic dyes in gelation microemultion (w/o) of the system of water, nonionic surfactan tween 60 and cyclohexane. Gel preparation was carried out using the sol-gel method at a temperature low using TEOS and ethanol which is hidrolyzed with water to form gel. Tetra ethyl ortho silicate which is added 1: 8 mol comparison to the amount of water in microemilsion of water in oil. Determination of value of the refractive index in this study using an ABBE refractometer. The result showed that the solubility of dye organic matter from turmeric and telang flower was 1,376% and 0,498% at pH 4,5 and 1,292% and 0,468% at pH 9,5. The density can be seen by the density test with the result of greatest density density is tumeric 0,87744 g/cm3 at pH 4,5 and 0,86836 g/cm3 at pH 9,5. Then measure the refractive index value, namely turmeric 1,4154 at pH 4,5 and 1,4274 at pH 9,5. 
Hedonic Test Method for Beef Rendang With Variations in The Addition of Cinnamomum Verum Sherly Rahmayani; Iryani Iryani; Iswendi Iswendi; Fitri Amelia
Jurnal Periodic Jurusan Kimia UNP Vol 11, No 3 (2022): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v11i3.114883

Abstract

Rendang is one of the typical foods of the Minangkabaunese in West Sumatra. Many people like to consume rendang because rendang has a distinctive taste because in making rendang the type of meat, coconut milk and spices used greatly affect the aroma and taste produced. The purpose of this study was to determine the level of aroma, color, texture, and taste of beef rendang with variations in the addition of Cinnamomum verum. The hedonic test of beef rendang with variations in the addition of C. verum was carried out on 50 panelists. Panelists present 6 samples with 6 different sample numbers. Panelists were asked to rate how much preference there was for the product using a hedonic scale. The hedonic test results showed that the less C. verum added, the better the taste produced. As for the aroma and color, there is no significant difference among these products
Pengaruh Penambahan Rempah Ketumbar (Coriandrum Sativum L.) Terhadap Cita Rasa Pada Rendang Daging Sapi Dengan Uji Hedonik Indah Dwi Putri; Iswendi Iswendi; Iryani Iryani; Fitri Amelia
Jurnal Periodic Jurusan Kimia UNP Vol 11, No 3 (2022): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v11i3.116016

Abstract

Coriander (Coriandrum sativum L.) is a spice known to have active ingredients, one of which is anti-cholesterol. Some regions use coriander as an ingredient in making beef rendang. The purpose of this study was to determine the level of preference for color, meat texture, seasoning texture, taste and aroma of beef rendang made using six variations of the addition of coriander rhizome, namely with levels: 0, 1, 2, 3, 4 and 5 grams/500 grams. beef. The organoleptic test method uses the hedonic test, namely the level of preference test with 40 panelists of UNP chemistry students 2020. The hedonic test results show that, the addition of coriander seasoning to beef rendang in general there is no significant change (p> 0.05) to the original rendang.
Effect of Contact Time on Biosorption of Pb(II) Metal Ions Using Biosorbent from Durian Peel (Durio zibethinus L) Esti Ramadhani; Desy Kurniawati; Fitri Amelia; Ananda Putra
Indonesian Journal of Chemical Science and Technology (IJCST) Vol 6, No 1 (2023): JANUARY 2023
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/ijcst.v6i1.43174

Abstract

Lead metal (Pb2+) is a heavy metal that is dangerous and has high toxicity. Pb2+ metal comes from industrial waste such as electroplating, paint, and the textile industry so it can find air. An effective, efficient, and economical method to overcome air contact with the biosorption method. Pb2+ metal ion biosorption using durian peel (Durio zibethinus L) as biosorbent. The purpose of this study was to determine the optimal conditions for the absorption of Pb2+ metal ions using the batch method with variations in speed and stirring time. The results showed that the optimal condition for Pb2+ absorption occurred at a contact time of 60 minutes with an absorption capacity of 33.6163 mg/g.
Assessing the Potentiality of Aerobic Rolling Composter to Hasten Vegetable and Fruit Waste Fitri Amelia; Eka Yusmaita; Yolli Fernanda; Firma Yulianis; Sherly Rahmayani; Ashekul Islam
EKSAKTA: Berkala Ilmiah Bidang MIPA Vol. 24 No. 01 (2023): 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/vol24-iss01/368

Abstract

Organic waste is mainly categorized in recent days as household waste and city garbage. To meet eco-friendly waste management, incorrect composter or conventional composting methods do not fulfilling the demands even though sometimes the composting procedure is so lengthy. To speed up the composting process, our research team has developed an aerobic composter using microorganisms, e.g., Trichoderma, Effective Microorganism 4 (EM4), and a combination of Trichoderma. Three different aerobic rolling composters (ARC) were designed to speed up the composting process during the testing stage by employing EM4. It showed a greater reduction in waste height utilizing EM4 on the 15th day (3.8%-17.9%) than the conventional one (2%). In addition, inoculation of EM4 and Trichoderma in combination with EM4 caused a 45% reduction in weight. Thus, the composter (type 3) efficiently decomposes the waste with a shorter composting period.  
Pengaruh Penambahan Kulit Kayu Manis, Ketumbar dan Jintan Putih Terhadap Cita Rasa Rendang Daging Sapi Dengan Uji Hedonik Savira Harna Febiyanti; Sherly Rahmayani; Taufik Maulana Rinata; Fitri Amelia; Iryani Iryani; Iswendi Iswendi
Jurnal Periodic Jurusan Kimia UNP Vol 12, No 1 (2023): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v12i1.116487

Abstract

Indonesia has many spices that have medicinal properties, one of which is cinnamon bark, coriander and cumin which are known to have antioxidants that can lower blood glucose levels, total cholesterol and anti-obesity. The purpose of this study was to determine the effect of cinnamon bark, coriander and cumin on the taste of beef rendang. The hedonic test was carried out with 15 panelists and the parameters observed were color, texture, aroma and taste. The results showed that the addition of cinnamon bark, coriander and cumin had no significant effect on texture, aroma and taste but significantly (P>0.05) on color organoleptic values.
CHARACTERIZATION AND EVALUATION OF SECONDARY METABOLITES FROM IPOMOEA BATATAS VAR. CILEMBU BARK: EXTRACTION, ANTIOXIDANT ACTIVITY, PHYTOCHEMICAL SCREENING Fathatul Akrami; Ronal Deniro; Syifa Syakirah; Fitri Amelia; Hesti Parbuntari; Fazila Ameliya; Latifa Permata; Welni Rahmadani
SPIN JURNAL KIMIA & PENDIDIKAN KIMIA Vol. 8 No. 1 (2026): January - June 2026
Publisher : UIN Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20414/spin.v8i1.15155

Abstract

This study aimed to evaluate the antioxidant potential and secondary metabolite content of Cilembu sweet potato (Ipomoea batatas var. cilembu) peel using maceration and reflux extraction methods. The extraction process used 70% ethanol as a solvent, followed by phytochemical analysis, antioxidant activity using the DPPH method, and characterization using TLC and FTIR. The results showed that the maceration and reflux extracts contained flavonoids, phenolics, terpenoids, and saponins. Antioxidant activity was expressed as an IC50 value, where the reflux extract had an IC50 of 244,5 ppm, lower than the maceration extract with an IC50 of 86,776  ppm, indicating stronger antioxidant activity. FTIR analysis identified functional groups consistent with the main bioactive compounds. This study confirmed the potential of Cilembu sweet potato peel as an effective source of natural antioxidants with higher efficiency through the reflux method compared to maceration.   ABSTRAK Penelitian ini bertujuan untuk mengevaluasi potensi antioksidan dan kandungan metabolit sekunder dari kulit ubi Cilembu (Ipomoea batatas var. cilembu) menggunakan metode ekstraksi maserasi dan refluks. Proses ekstraksi menggunakan etanol 70% sebagai pelarut, diikuti dengan analisis fitokimia, aktivitas antioksidan dengan metode DPPH, serta karakterisasi menggunakan KLT dan FTIR. Hasil penelitian menunjukkan bahwa ekstrak maserasi dan refluks mengandung flavonoid, fenolik, terpenoid, dan saponin. Aktivitas antioksidan dinyatakan dalam nilai IC50, di mana ekstrak refluks memiliki IC50 sebesar 244,5 ppm, lebih rendah dibandingkan dengan maserasi dengan IC50 86,776  ppm, menunjukkan aktivitas antioksidan yang lebih kuat pada ekstrak maserasi. Analisis FTIR mengidentifikasi gugus fungsi yang konsisten pada senyawa bioaktif utama. Penelitian ini mengkonfirmasi potensi kulit ubi Cilembu sebagai sumber antioksidan alami yang efektif dengan efisiensi yang lebih tinggi melalui metode refluks dibandingkan maserasi
WORKSHOP PEMANFAATAN AI UNTUK PENGEMBANGAN E-LKPD PADA PEMBELAJARAN DEEP LEARNING DI SMAN 1 PADANG SAGO: PKM Faizah Qurrata Aini; Fitri Amelia; Dwi Finna Syolendra; Nofri Yuhelman; Fauzana Gazali; Minda Azhar; Fajriah Azra; Yerimadesi; Andromeda; Miftahul Khair; Zonalia Fitriza; Suryelita; Viona Maharani; Achie Keylla; Munifa Mahdiah; Melati Wahyuni; Rifka Andani; Ayu Wulandari; Ulfa Autafia
BHAKTI NAGORI (Jurnal Pengabdian kepada Masyarakat) Vol. 5 No. 2 (2025): BHAKTI NAGORI (Jurnal Pengabdian kepada Masyarakat) Desember 2025
Publisher : LPPM UNIKS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36378/bhakti_nagori.v5i2.4764

Abstract

Kemajuan Artificial Intelligence (AI) dalam dunia pendidikan membuka peluang besar bagi guru untuk mengembangkan perangkat pembelajaran yang lebih inovatif, seperti Lembar Kerja Peserta Didik Elektronik (e-LKPD) yang interaktif, adaptif, dan personal. Namun, pemanfaatan AI masih menghadapi kendala berupa keterbatasan pemahaman, minimnya pelatihan, serta dukungan infrastruktur yang belum optimal. Workshop pemanfaatan AI di SMAN 1 Padang Sago, Kabupaten Padang Pariaman, diselenggarakan sebagai kegiatan pengabdian kepada masyarakat untuk meningkatkan kesiapan guru dalam mengintegrasikan AI ke dalam pengembangan bahan ajar berbasis deep learning. Kegiatan ini dilaksanakan melalui empat tahapan, yaitu persiapan, pelatihan pembuatan media pembelajaran berbasis AI, penyusunan modul ajar deep learning, serta pengembangan e-LKPD interaktif menggunakan Liveworksheet. Guru dibekali pemahaman etika penggunaan AI serta pemanfaatan platform seperti ChatGPT, Microsoft Word, dan Gamma.ai. Evaluasi pre-test dan post-test menunjukkan persepsi guru terhadap AI cenderung positif, meskipun terdapat penurunan pada kategori “sangat setuju” akibat kesadaran terhadap kompleksitas teknis, khususnya pada guru senior. Luaran kegiatan menunjukkan peningkatan keterampilan guru dalam merancang perangkat pembelajaran berbasis AI serta menghasilkan bahan ajar digital yang lebih interaktif, sekaligus mendukung penguatan ekosistem pembelajaran berbasis teknologi dan pencapaian IKU perguruan tinggi.
Enhancing Community Knowledge and Attitudes toward Organic Liquid Fertilizer Production through Participatory Training in Nagari Paninjauan, X Koto District, Tanah Datar Regency Fitri Amelia; Faizah Qurata’aini; Fazila Amelia; Kiki Amelia; Syamsi Aini; Iryani Iryani; Eka Yusmaita
Pelita Eksakta Vol 8 No 1 (2025): Pelita Eksakta, Vol. 8, No. 1
Publisher : Fakultas MIPA Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/pelitaeksakta/vol8-iss01/271

Abstract

Nagari Paninjauan, located on the slopes of Mount Marapi in West Sumatra, faces significant agricultural challenges, particularly due to rising chemical fertilizer costs, which affect productivity and farmers' welfare. High dependency on chemical fertilizers has also harmed soil health and the environment. To address this, a community service team from UNP held a training on producing organic liquid fertilizer (POC) tailored for various plant growth stages, such as soil enhancement, vegetative, and generative phases, as well as making organic growth regulators, fungicides, and insecticides. The training included material presentation, hands-on practice, and application in farming fields. Results showed participants’ understanding of POC production rose from 43.8% to 86.7%, and awareness of agricultural waste’s economic value also improved. Although the training effectively increased farmers' skills in independently producing POC, further strategies are needed to enhance understanding of technical materials for greater environmental and economic impact. Keywords —Organic Liquid Fertilizer (POC), Sustainable Farming, Agricultural Waste Utilization, Chemical Fertilizer Dependency, Community Training
Co-Authors Achie Keylla Ananda Putra Andromeda Ashekul Islam Aulia Rahmi Ayu Wulandari Desy Kurniawati Dwi Finna Syolendra Esti Ramadhani Faizah Qurata’aini Faizah Qurrata Aini Fajriah Azra Fathatul Akrami Fauzana Gazali Fazila Amelia Fazila Ameliya Firma Yulianis Hary Sanjaya Hesti Parbuntari Indah Dwi Putri Iryani Iryani Iryani Iryani Iswendi Iswendi Kiki Amelia Latifa Permata Melati Wahyuni Miftahul Khair Minda Azhar Munifa Mahdiah Nofri Yuhelman Rifka Andani Ronal Deniro Savira Harna Febiyanti Sherly Rahmayani Sherly Rahmayani Suryelita Syamsi Aini Syifa Syakirah Taufik Maulana Rinata Ulfa Autafia Viona Maharani Welni Rahmadani Yerimadesi Yolli Fernanda Yusmaita, Eka Zonalia Fitriza