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All Journal Jurnal Pendidikan Kimia Jurnal Inovasi Pendidikan IPA INDONESIAN JOURNAL OF PHARMACY Jurnal Tadris Kimiya Jurnal Penelitian Pendidikan IPA (JPPIPA) Indonesian Journal of Chemistry JKPK (Jurnal Kimia dan Pendidikan Kimia) Jurnal Abdi Masyarakat Indonesia Jurnal Pendidikan Sains Indonesia (Indonesian Journal of Science Education)

Endang Susilowati

Bachelor Program Of Chemistry Education, Faculty Of Teacher Training And Education, Universitas Sebelas Maret, Indonesia Jl.Ir Sutami No 36 A, Surakarta, Central Java

Author-ID : 1335896

Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Economics, Econometrics & Finance Education Engineering Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics Public Health

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Combination of Corn Waste and Egg Shell as Zn Metal Adsorbent with Batch System Ulfa Imroathul Hasanah; Budi Utami; Endang Susilowati
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 7, No 2 (2022): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jkpk.v7i2.55440

This study aims to determine: the ability of corn cobs and eggshells as Zn metal adsorbents, functional groups of corn cobs and eggshells adsorbent, what isotherm patterns occur in the adsorbent corn cobs and eggshells in adsorbing Zn metal, the optimum ratio and optimum mass of the adsorbent composition of corn cobs and eggshells in Zn metal adsorption, the optimum contact time for adsorbent corn cobs and eggshell in adsorbing Zn metal, the optimum concentration of adsorbate to be adsorbed by corn cobs and eggshell adsorbents. This study used an experimental method in the laboratory. characterization includes functional groups using FTIR, and test the effectiveness of adsorbents using the AAS instrument. Kinetic analysis of adsorbent by adsorption isotherm with Langmuir isotherm, Freundlich isotherm, Temkin isotherm, and dubinin-radushkevivh isotherm. The results showed that: Corn cobs and eggshells can be used as zinc metal adsorbents; in the corn cobs adsorbent, there is a functional group -OH at wave number 3415,15 cm-1 and in the eggshell, there is a bent vibration of calcium carbonate at wave number 3400,65 cm-1, the adsorption process of Zn metal by adsorbent corn cobs and egg shells follows the Langmuir isotherm pattern (chemical adsorption), the comparison of the optimum composition and mass of the adsorbent corn cobs and eggshells in Zn metal adsorption are 1:2 and 0,15 grams with Zn metal adsorbed by 80,4571%, the optimum contact time for the adsorbent corn cobs and eggshells in adsorbing Zn metal is 90 minutes with the percentage of absorbed Zn metal concentration is 75,5957%, and the optimum concentration of adsorbate for adsorbed by corn cob and eggshell adsorbents is 1 mg/L with adsorbed Zn percentage of 82,8377%.

Studi komparasi learning cycle 5E dan learning together dikombinasi dengan drill and practice terhadap prestasi belajar kimia ditinjau dari keterampilan proses siswa Mita Fujiyanti; Endang Susilowati; Sulistyo Saputro
Jurnal Inovasi Pendidikan IPA Vol 4, No 1: April 2018
Publisher : Faculty of Mathematics and Natural Sciences, Universitas Negeri Yogyakarta

Penelitian ini bertujuan untuk mengetahui perbedaan prestasi belajar antara siswa yang diberikan model pembelajaran Learning Cycle 5E dan Learning Together dikombinasikan dengan Drill and Practice; siswa yang memiliki keterampilan proses tinggi dan keterampilan proses rendah; serta interaksi antara pembelajaran Learning Cycle 5E dan Learning Together dikombinasi dengan Drill and Practice dengan keterampilan proses siswa terhadap prestasi belajar siswa pada materi pokok hidrolisis garam. Penelitian ini merupakan penelitian kuantitatif dengan metode eksperimen. Sampel penelitian terdiri dari dua kelas siswa (XI MIA 1 dan XI MIA 3) yang ditentukan dengan menggunakan teknik cluster random sampling. Data diperoleh melalui tes tertulis, angket, observasi. Hasil penelitian dapat disimpulkan bahwa: (1) siswa yang diberikan penerapan model pembelajaran Learning Cycle 5E memiliki prestasi belajar yang lebih baik dibandingkan siswa yang diberikan penerapan model pembelajaran Learning Together yang dikombinasikan dengan Drill and Practice; (2) siswa yang memiliki keterampilan proses tinggi memiliki prestasi belajar yang lebih baik dibandingkan siswa yang memiliki keterampilan proses rendah; dan (3) terdapat interaksi antara model pembelajaran Learning Cycle 5E dan Learning Together yang dikombinasikan dengan Drill and Practice dengan keterampilan proses siswa. Comparison Study of Learning Cycle 5E and Learning Together Combined With Drill and Practice on Student Achievement in Hydrolysis of Salt Viewed from Process Skill AbstractThe aim of this study were to know differences student’s achievement between Learning Cycle 5E models and Learning Together in combination with Drill and Practice; student’s achievement between higher process skill and lower process skill; and interaction between Learning Cycle 5E and Learning Together in combination with Drill and Practice models with process skill towards student’s achievement. This research is a quantitative research with experimental method. The sample consists of 2 class which taken by cluster random sampling technique. The techniques of collecting data using documentation, test, questionnaire, and observation. Based on result of the research can be concluded that: (1) student’s achievement of chemistry learning use Learning Cycle 5E better than Learning Together in combination with Drill and Practice models; (2) student’s achievement higher process skill better than lower process skill; and (3) there was an interaction between Learning Cycle 5E and Learning Together in combination with Drill and Practice models with process skill towards student’s achievement.

Pelatihan Produksi dan Pengemasan Sabun Cair Herbal Antiseptik Alami bagi UKM Sabun Herbal di Kota Surakarta Endang Susilowati; Sri Retno Dwi Ariani; Sri Mulyani
Jurnal Abdi Masyarakat Indonesia Vol 2 No 6 (2022): JAMSI - November 2022
Publisher : CV Firmos

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54082/jamsi.522

Usaha Kecil dan menengah (UKM) sabun herbal merupakan salah satu usaha yang menarik untuk dikembangkan. Berdasarkan observasi di UKM sabun herbal Dejavu milik Ibu Sherly di Kota Surakarta, telah memproduksi dan memasarkan herbal padat dengan bahan aditif ekstrak dari buah dan sayuran. Namun usaha sabun ini masih perlu pengembangan produk supaya penjualannya meningkat. Program Kemitraan Masyarakat (PKM) UNS memberikan solusi melalui inovasi produksi sabun herbal cair antiseptik alami. Tujuan kegiatan ini adalah memberikan pelatihan produksi dan pemgemasan sabun herbal cair antiseptik alami. Pelatihan dilakukan dengan cara sosialisasi dan praktek pada produksi dan pengemasannya. Selanjutnya, sabun yang dihasilkan dari pelatihan dilakukan pengujian di laboratorium dan uji organoleptik. Hasil pelatihan menunjukkan UKM sabun herbal Dejavu telah dapat membuat dan mengemas 4 varian sabun antiseptik alami berupa sabun lidah buaya, sabun jeruk nipis, sabun sereh dan sabun sirih merah. Berdasarkan uji kualitas sabun diperoleh nilai pH yang memenuhi persyaratan SNI dengan kekentalan dan tingkat kestabilan busa yang baik. Berdasarkan uji organoleptik, sabun herbal cair ini bisa diterima konsumen dengan nilai yang cukup disukai. Sabun ini masih perlu diperbaiki terutama pada penambahan pewangi. Secara umum sabun hasil pelatihan yang dikemas dengan ukuran 250 mL dengan label sesuai variannya memiliki kualitas yang baik dan siap dipasarkan.

pH-Sensitive Strips Based on Cellulose and Anthocyanins from Dried Java Plum Fruits (Syzygium cumini) Muhammad Hizbul Wathon; Endang Susilowati; Sri Retno Dwi Ariani
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 8, No 1 (2023): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jkpk.v8i1.72702

This study aimed to develop pH-sensitive strips made of cellulose incorporated with anthocyanins extracted from dried Java plum fruits (Syzygium cumini) which potentially can be used to monitor food freshness. The spoilage of animal protein typically produces total volatile basic nitrogen (TVB-N), which can be easily detected using pH-sensitive indicators. pH-sensitive indicators can be developed by combining biopolymers and anthocyanins. Biopolymers were cellulose from Whatman filter paper. While anthocyanins in this study were extracted from dried Java plum fruits (Syzygium cumini) with acidified water (0.01% v/v HCl) followed by SPE. Anthocyanins were incorporated into Whatman filter paper and dried at 70 °C for 10 min. Cellulose incorporated with anthocyanins was analysed using FT-IR and tested for pH 7-10. LC-MS spectra showed cyanidin-3-O-glucoside (m/z 449.3), delphinidin-3-O-glucoside (m/z 465.3), and petunidin-3-O-glucoside (m/z 479.3). These anthocyanins were the products of the deglycosylation of anthocyanin diglycosides. The deglycosylation of anthocyanins takes place through two different routes in either hemiketal or quinonoid forms. Those proposed two pathways are through protonation on an oxygen atom connecting an aglycone and a sugar moiety or through protonation on an oxygen atom within a sugar ring moiety. UV-Vis studies showed the colour profiles of anthocyanins in buffer solutions pH 1-12. The λvis-max of flavylium at pH < 3 ranged from 515-524 nm. At pH 4 to 6, colourless hemiketal was observed. The λvis-max of the quinonoid base was 575 nm at pH 7 and 590-599 nm for quinonoid anion at pH > 8. In alkaline pH, chalcone was observed.

Content Validity in Android-Based Augmented Reality Media for High School Science Students on Covalent Bonds Topic: Rasch Model Analysis Sri Yamtinah*; Mega Candra Dewi; Nanik Dwi Nurhayati; Endang Susilowati; Isma Aziz Fakhrudin; Dimas Gilang Ramadhani; Ari Syahidul Shidiq; Sulistyo Saputro
Jurnal Pendidikan Sains Indonesia Vol 10, No 2 (2022): APRIL 2022
Publisher : Universitas Syiah Kuala

The 21st-century chemistry learning that teaches abstract and complex concepts needs to develop learning media that can increase students' learning motivation and visualize abstract concepts in chemistry. One of the media in the 21st century developed in this study is Android-based augmented reality media. The purpose of this study was to test the validity of the Android-based Augmented Reality media and see the differences in perceptions between teachers and students in assessing media. The validation of android-based Augmented Reality learning media uses a questionnaire and is quantitative. The Rater for assessing the product consisted of 6 senior chemistry teachers at 5 different schools in Surakarta and 20 students who had obtained the material for covalent bonding at SMA N 1 Ngemplak Boyolali. The data obtained were analyzed by Rasch Model using Facets software. The results of the analysis show that exact agreements are 35.1% and exacted agreements are 35.2%. This happens because the aspects are considered easy by the teacher, but the students consider these aspects difficult. The aspect or item that is considered the most difficult to achieve is the suitability of the example with the material and improving understanding of the material. Based on this research, in developing media, it must be packaged properly so that it is easily understood and understood by students

Co-Authors ., Sugiharto Andini Desikasari Nuraisyah Andriyani, Dhini Ari Syahidul Shidiq Ary Eny Lestari Ashadi . Ashadi, Ashadi Budi Utami Catur Saputro, Agung Nugroho Dimas Gilang Ramadhani Dimas Gilang Ramadhani Dina Prasetyaningrum Dyah Pujiastuti Dyah Puspitasari Ekawati, Enik Elfi Susanti V. H. Haryono, . Haryono, Haryono Indriana Kartini Isma Aziz Fakhrudin Lestari, Wahyuning Lina Mahardiani Luthfia Izzati Maria Ulfa Martha Andriyanti Martini, Kus Sri Maryani . Mega Candra Dewi Mita Fujiyanti Mohammad Masykuri Mohammad Masykuri Muhammad Hizbul Wathon Muhammad Masykuri Mulyani, Bakti Mulyani, Sri Nanik Dwi Nurhayati Nurhayati, Nanik Dwi Prihantoro, Dino Qonitah, Fadilah Setiyani Setiyani Sri Juari Santosa Sri Nuryanti Sri Retno Dwi Ariani Sri Retno Dwi Ariani Sri Retno Dwi Ariani Sri Retno Dwi Ariani Sri Retno Dwi Ariani Sri Yamtinah Sulistyo Saputro Sulistyo Saputro Sulistyo Saputro Sulistyo Saputro Susanto, . Triyono Triyono Tyas, Rya Sucining Ulfa Imroathul Hasanah Ulfa, Maria Yunitasari, Wahyu

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