EduChemia (Jurnal Kimia dan Pendidikan)最新文献_第5页

Characterization of Phytochemicals and Chemical Compounds of Patat Leaves (Phrynium capitatum) as Wrapping Materials for Pesor Doclang 杜庄葡萄包皮材料柏树叶的化学成分和化学成分的研究

EduChemia (Jurnal Kimia dan Pendidikan) Pub Date : 2021-01-28 DOI: 10.30870/EDUCHEMIA.V6I1.9189.G6869

A. Fathoni

{"title":"Characterization of Phytochemicals and Chemical Compounds of Patat Leaves (Phrynium capitatum) as Wrapping Materials for Pesor Doclang","authors":"A. Fathoni","doi":"10.30870/EDUCHEMIA.V6I1.9189.G6869","DOIUrl":"https://doi.org/10.30870/EDUCHEMIA.V6I1.9189.G6869","url":null,"abstract":"Doclang is a typical food of Bogor. One of the compositions is “pesor” wrapped in patat leaves. Apart from being a food wrapper, patat leaves are used as traditional medicine. Research on the chemical content of patat leaves is still limited and needs to be further developed. In this study, phytochemical testing and chemical content of the extracts of n-hexane, ethyl acetate, and methanol from patat leaves were carried out. Phytochemical tests include alkaloid tests; steroid and terpenoid testing; flavonoid test; saponin test; phenolic hydroquinone; tannin and polyphenol test. Based on phytochemical test results, the extract of patat leaves was known to contain alkaloids, steroids, triterpenoids, flavonoids, saponins, phenolic hydroquinones, and tannins with different distributions at each level of solvent polarity. The instruments used to identify the chemical content of patat leaf extract were GCMS and LCMS QTOF. Through GCMS analysis on n-hexane extract, 114 compounds were identified with a similarity level of ≥ 80% to the library. Among these compounds, confirmed to be terpenoid and steroid compounds. In the LCMS analysis of ethyl acetate extract obtained 25 compounds and 31 compounds for methanol extract. It is suspected that these compounds come from the alkaloid, steroid, flavonoid, saponin, phenolic hydroquinone, or tannin class.","PeriodicalId":269986,"journal":{"name":"EduChemia (Jurnal Kimia dan Pendidikan)","volume":"129 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122517694","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Implementation of Problem-Solving Model with The Redox Booklet to Enhance Problem-Solving Skills 用《氧化还原》小册子实施问题解决模式，提高解决问题的能力

EduChemia (Jurnal Kimia dan Pendidikan) Pub Date : 2021-01-28 DOI: 10.30870/EDUCHEMIA.V6I1.8946

Jeanette Valentine Rut Tewal, Eny Enawaty, Husna Amalya Melati

引用次数: 2

Dyhydrokaempferol-3-O-Ramnoside from Ethyl Acetate Extract Ki Encok (Plumbago zeynalica L.) Leaves 二氢山奈酚-3- o - ramnoside (Plumbago zeynalica .)叶子

EduChemia (Jurnal Kimia dan Pendidikan) Pub Date : 2021-01-28 DOI: 10.30870/EDUCHEMIA.V6I1.9025.G6870

Nani Suryani, E. Julaeha, T. Herlina

{"title":"Dyhydrokaempferol-3-O-Ramnoside from Ethyl Acetate Extract Ki Encok (Plumbago zeynalica L.) Leaves","authors":"Nani Suryani, E. Julaeha, T. Herlina","doi":"10.30870/EDUCHEMIA.V6I1.9025.G6870","DOIUrl":"https://doi.org/10.30870/EDUCHEMIA.V6I1.9025.G6870","url":null,"abstract":"Plumbago zeynalica L. plant belongs to the Plumbaginaceae family, which is spread as a weed in all tropical and sub-tropical countries, and its abundance is very high in Asia and Africa. P. zeynalica L. plants are ethnopharmacologically used as antitumor, antioxidant, antimicrobial, anticancer, wound healed, and anti-inflammatory. This study aims to isolate secondary metabolites from the fraction of P. zeynalica L. leaf extracts with work stages that included isolation and determination of chemical structures by spectroscopy. Based on the results of the separation and purification of the ethyl acetate fraction obtained isolates in the form of a yellow oil suspected as a flavonoid. The chemical structure of the isolates was identified based on UV-Vis spectroscopy data giving maximum absorption at λmax 339.60 nm and 278.80 nm, which are typical for dihydroflavonol. IR spectroscopy analysis of the isolates provided data information on the presence of aliphatic OH, C-H groups, carbonyl groups (C = O), C = C aromatic groups, and ether strain (C-O-C). NMR data showed that the isolate had the molecular formula of C 21 H 22 O 10 , and its molecular weight confirmed by MS spectrometer was obtained m/z 434. Isolates from this ethyl acetate fraction were suspected as dyhydrokaempferol-3-O-ramnoside or engeletin.","PeriodicalId":269986,"journal":{"name":"EduChemia (Jurnal Kimia dan Pendidikan)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133726538","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Development of SETS-Based Teaching Materials in Acid-Base Accompanied by Critical Thinking Exercises and Moral Forming 基于sets的酸碱类课程教材开发，并辅以批判性思维练习和道德养成

EduChemia (Jurnal Kimia dan Pendidikan) Pub Date : 2020-07-30 DOI: 10.30870/educhemia.v5i2.7934

Rahmat Rasmawan

{"title":"Development of SETS-Based Teaching Materials in Acid-Base Accompanied by Critical Thinking Exercises and Moral Forming","authors":"Rahmat Rasmawan","doi":"10.30870/educhemia.v5i2.7934","DOIUrl":"https://doi.org/10.30870/educhemia.v5i2.7934","url":null,"abstract":"This study aims to produce SETS-based teaching materials in acid-base concept that can foster students' critical thinking skills and establish their morale. This study is Research and Development (R & D) refers to the Borg and Gall model, which has been modified into five stages; preliminary study, preparation of product draft, validation and revision of product draft, legibility test, and product draft revision. As the instrument, this study was using a questionnaire about resistances and obstacles, observation sheets in learning, interview guidelines, validation sheets of teaching materials draft, and legibility response questionnaires. Data obtained from questionnaires, learning observation sheets, and interview guidelines were analyzed descriptively qualitatively to get the representation of the learning process that has been conducted so far. The validation sheet and legibility response questionnaire were analyzed quantitatively to determine the validity and legibility levels of teaching materials. The results of expert validation show that the developed teaching materials have a direct link between science, the environment, technology and society in solving problems related to daily life and the students as users give positive responses to the developed teaching materials in terms of content, appearance, novelty, problems, direction and work instructions. Thus, teaching materials developed are valid and proper to be used in the learning process","PeriodicalId":269986,"journal":{"name":"EduChemia (Jurnal Kimia dan Pendidikan)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114374148","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Biokonsentrasi Faktor Logam Berat pada Kerang dari Perairan Batam, Kepulauan Riau, Indonesia 印度尼西亚廖内群岛巴淡岛水域贝类中重金属因子的生物富集性

EduChemia (Jurnal Kimia dan Pendidikan) Pub Date : 2019-07-30 DOI: 10.30870/EDUCHEMIA.V4I2.5529

Fitrah Amelia, Ismarti Ismarti, Ramses Ramses, Rozirwan Rozirwan

{"title":"Biokonsentrasi Faktor Logam Berat pada Kerang dari Perairan Batam, Kepulauan Riau, Indonesia","authors":"Fitrah Amelia, Ismarti Ismarti, Ramses Ramses, Rozirwan Rozirwan","doi":"10.30870/EDUCHEMIA.V4I2.5529","DOIUrl":"https://doi.org/10.30870/EDUCHEMIA.V4I2.5529","url":null,"abstract":"Penelitian ini bertujuan untuk menentukan tingkat bioakumulasi logam berat pada kerang yang berada di perairan barat pulau batam. Batam merupakan daerah yang memiliki potensi besar terhadap pencemaran logam berat, karena tingginya aktifitas yang ada di perairan. Penelitian ini dilakukan di lima lokasi sampling. Sampel dalam penelitian ini adalah kerang dengan spesies Anadara sp., Perna viridis dan Crassostrea gigas. Logam berat yang diteliti yaitu logam kadmium (Cd), timbal (Pb) dan tembaga (Cu). Analisa logam berat dilakukan menggunakan Atomic Absorption Spectroscopy (AAS). Berdasarkan hasil perhitungan diperoleh faktor biokonsentrasi (BCF) logam berat pada spesies Anadara sp ., Perna viridis dan Crassostrea gigas . Biokonsentrasi logam dalam medium air secara berturut-turut teramati bahwa Pb > Cu > Cd, dengan kategori BCF Pb dan Cu tergolong tinggi, serta Cd tidak terdeteksi. Sedangkan untuk spesies Anadara sp . dalam medium sedimen diperoleh biokonsentrasi logam berat Cu > Cd > Pb dengan kategori BCF rendah untuk semua logam. Selanjutnya, untuk spesies Perna Viridis dan Crassostrea gigas diperoleh biokonsentrasi logam Cd > Pb > Cu, dengan kategori BCF-nya juga tergolong rendah.","PeriodicalId":269986,"journal":{"name":"EduChemia (Jurnal Kimia dan Pendidikan)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133963318","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Pengembangan Modul Kimia Analitik Berbasis Inkuiri pada Materi Titrasi 基于乳头物质的分析化学模块的发展

EduChemia (Jurnal Kimia dan Pendidikan) Pub Date : 2019-07-30 DOI: 10.30870/EDUCHEMIA.V4I2.5326

R. Astuti, Yeva Olensia

{"title":"Pengembangan Modul Kimia Analitik Berbasis Inkuiri pada Materi Titrasi","authors":"R. Astuti, Yeva Olensia","doi":"10.30870/EDUCHEMIA.V4I2.5326","DOIUrl":"https://doi.org/10.30870/EDUCHEMIA.V4I2.5326","url":null,"abstract":"Penelitian ini bertujuan untuk mengetahui kelayakan modul kimia analitik berdasarkan validasi ahli dan mengetahui respon mahasiswa terhadap modul yang dikembangkan. Penelitian ini merupakan penelitian pengembangan dengan menggunakan model pengembangan Borg & Gall. Tahapan yang dilakukan pada penelitian ini hanya 7 tahapan dari 10 tahapan pengembangan. Kelayakan modul diukur dari lembar validasi yang dibagikan kepada 3 dosen ahli yaitu ahli materi, ahli pembelajaran, dan ahli media. Lembar validasi mencakup aspek isi, aspek bahasa, aspek penyajian, dan aspek kegrafikan. Analisis lembar validasi menggunakan Formula Aiken didapatkan hasil sebesar 0,799 dengan kriteria tinggi sehingga modul dinyatakan valid dan layak sebagai modul pembelajaran. Hasil respon mahasiswa terhadap modul yang dikembangkan dilakukan melalui tahap uji coba skala kecil dan skala menengah. Hasil uji coba skala kecil menunjukkan bahwa rata-rata aspek bahasa dan penyajian persentase yang didapat masing-masing sebesar 85,00% dan 84,44% dengan kriteria baik sedangkan aspek bahasa dan kegrafikan masing-masing persentasenya yaitu 86,11% dan 89,44% dengan kriteria sangat baik. Hasil uji coba skala menengah didapatkan respon mahasiswa dengan kriteria sangat baik pada seluruh aspek.Persentasenya yaitu aspek isi 87,83%, bahasa 87,00%, penyajian 87,30%, dan kegrafikan 90,17%. Mahasiswa menunjukkan respon yang sangat baik terhadap modul kimia yang dikembangkan.","PeriodicalId":269986,"journal":{"name":"EduChemia (Jurnal Kimia dan Pendidikan)","volume":"179 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120867823","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Kepraktisan Permainan Simple NOMIC Berbasis Android sebagai Media Pembelajaran pada Materi Tata Nama Senyawa Anorganik Sederhana 一种简单的以Android为基础的模拟游戏的实用性，作为一种简单的无有机化合物语法材料的学习媒介

EduChemia (Jurnal Kimia dan Pendidikan) Pub Date : 2019-07-30 DOI: 10.30870/EDUCHEMIA.V4I2.5884

Rusly Hidayah, Aisyatur Rahmanah

引用次数: 2

Kajian Terhadap Tanaman Pewarna Alami Pada Masyarakat Baduy Luar 来自外部贝都因人的天然染料研究

EduChemia (Jurnal Kimia dan Pendidikan) Pub Date : 2019-07-30 DOI: 10.30870/EDUCHEMIA.V4I2.6150

Irah Namirah, Isriyanti Affifah, Imas Eva Wijayanti, Indah Langitasari

{"title":"Kajian Terhadap Tanaman Pewarna Alami Pada Masyarakat Baduy Luar","authors":"Irah Namirah, Isriyanti Affifah, Imas Eva Wijayanti, Indah Langitasari","doi":"10.30870/EDUCHEMIA.V4I2.6150","DOIUrl":"https://doi.org/10.30870/EDUCHEMIA.V4I2.6150","url":null,"abstract":"Suku baduy merupakan suatu komunitas tradisional yang terletak di sekitar kawasan hutan dan masih mempertahankan nilai budaya leluhur. Keanekaragaman hayati masih terjaga dan pemanfaatan bahan alam dalam kehidupan masyarakat masih dipertahankan. Oleh karena itu, penelitian ini bertujuan untuk menggali pengetahuan lokal pada masyarakat Baduy. Metode penelitian yang digunakan metode studi deskriptif kualitatif dan eksploratif. Dari hasil observasi lapangan, didapatkan tanaman pewarna alami telah digunakan masyarakat Baduy luar sejak dahulu dan ditemukan berdasarkan pencarian masyarakat Baduy terhadap beberapa tanaman disekitar yang dapat dijadikan sebagai pewarna. Tanaman pewarna yang digunakan diantaranya adalah tarum ( Indigofera tinctoria ) (daun), mahoni ( Swietenia mahagoni ) (kulit), secang ( Caesalpinia sappan L ) (kulit), putri malu ( Mimosa pudica ) (daun), jengkol ( Archidendron pauciflorum ) (kulit) dan pinang ( Areca catechu L ) (buah) dan renrang (kulit). Informasi ini dapat dikembangkan menjadi kajian etnokimia yang kemudian diterapkan pada proses pembelajaran di jurusan Pendidikan Kimia Universitas Sultan Ageng tirtayasa. Penelitian ini didanai oleh Fakultas Keguruan dan Ilmu Pendidikan Universitas Sultan Ageng tirtayasa.","PeriodicalId":269986,"journal":{"name":"EduChemia (Jurnal Kimia dan Pendidikan)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130256530","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Kajian Senyawa Turunan Benzopirazin sebagai Antimalaria Menggunakan Metode HKSA dan MLR 根据HKSA和MLR的抗疟方法对benzorazin提供的化合物进行研究

EduChemia (Jurnal Kimia dan Pendidikan) Pub Date : 2019-07-30 DOI: 10.30870/EDUCHEMIA.V4I2.4989

Khusna Arif Rakhman, Nurfitrianasari Limatahu, Hasbul Budiman Karim, Muhammad Ikhlas Abdjan

{"title":"Kajian Senyawa Turunan Benzopirazin sebagai Antimalaria Menggunakan Metode HKSA dan MLR","authors":"Khusna Arif Rakhman, Nurfitrianasari Limatahu, Hasbul Budiman Karim, Muhammad Ikhlas Abdjan","doi":"10.30870/EDUCHEMIA.V4I2.4989","DOIUrl":"https://doi.org/10.30870/EDUCHEMIA.V4I2.4989","url":null,"abstract":"Telah dilakukan optimasi geometri molekul, kajian hubungan kuantitatif aktivitas-struktur (HKSA) dan regresi multilinear (RML) terhadap senyawa turunan benzopirazin dengan substitusi gugus (R7) pendonor elektron seperti: -Br, -COOH, -NH 2 , -NH 3 , -OH dan -C 5 H 6 . Pemodelan struktur molekul telah dilakukan secara komputasi dengan menggunakan paket program Hyperchem 8.0.10 . Hasil optimasi geometri menggunakan metode semi empiris AM1 menghasilkan energi total dari masing-masing senyawa dari senyawa A1-A6. Penentuan hubungan antara deskriptor yang meliputi Log P, Polari, SAG , SAA , EH, EHOMO, ELUMO, ΔEG, MD dan muatan bersih atom dengan aktivitas antimalaria (IC 50Eksperimen ) menunjukan terdapat korelasi. Deskriptor yang menunjukan terdapat adanya hubungan dengan aktivitas antimalaria (IC 50Eksperimen ) selanjutnya, ditentukan model persamaan HKSA terbaik dilakukan dengan analisis regresi multilinear menggunakan program SPSS 22 . Hasil analisis yang didapatkan untuk model persamaan HKSA terbaik terdapat pada persamaan model 4: Log 1/IC 50 = 2.357 - (0.041) EH + (0.297) Polari - (0.024) SAG - (0.043) ELUMO dengan n = 6, R= 0.963, R 2 = 0.928, SE = 0.08827, PRESS = 0.5971580176.","PeriodicalId":269986,"journal":{"name":"EduChemia (Jurnal Kimia dan Pendidikan)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131204857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Studi Kinetika Adsorpsi Isoterm Persamaan Langmuir dan Freundlich pada Abu Gosok sebagai Adsorben

EduChemia (Jurnal Kimia dan Pendidikan) Pub Date : 2019-07-30 DOI: 10.30870/EDUCHEMIA.V4I2.6119

Ima Wijayanti, Eka Kurniawati

引用次数: 14