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Journal of Tropical Chemistry Research and Education
Published by Universitas Islam Negeri Sunan Kalijaga Yogyakarta
ISSN : 2685144X     EISSN : 26855690     DOI : https://doi.org/10.14421/jtcre2020.22-01
Core Subject : Science, Education,
Chemistry Education
This journal encompasses original research article and review articles related tropical chemistry, but it is not restricted to, including: Lab based research Teaching & Learning Material Learning Learning Media/Multimedia Evaluation & Assessment Higher Order Thinking Skills Science, Technology, Engineering, and Mathematics (STEM) Education Chemical Content Learning Strategy School Laboratory Experiment
Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)
Articles 6 Documents
 1 
Search results for , issue "Vol. 5 No. 2 (2023)" : 6 Documents clear
Zn, Fe, Se, and I concentrations present in tomato as affected by neem extract preservation in Sokoto, Nigeria Yusuf
Journal of Tropical Chemistry Research and Education Vol. 5 No. 2 (2023)
Publisher : Chemistry Education Department, Faculty of Tarbiyah and Education, UIN Sunan Kalijaga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/jtcre.2023.52-01

Abstract

Nowadays addition of chemicals to save tomatoes against early spoilage is rampant, but the chemicals are harmful; thus, bio-based alternative with novel features are needed. The aim of this study was to discover the effect of using neem leaves extract for preservation of two tomato cultivars collected from Sokoto, Nigeria. 5%, 10% and 25% (w/v) aqueous solutions of neem extract to be used to coat tomatoes were prepared and an experiment was done in a randomized control trial. Consequently, with the addition of neem extract for preservation of tomato; Zn, Fe, Se, and I were assessed in Daneka tomato variety using atomic absorption spectrometry. The Fe level increase from 13.0 ± 0.05 ppm to 16.1 ±0.01 ppm. Selenium increase from 2.0 ± 0.05 ppm to 5.2 ± 1.5 ppm, iodine increase from 6.2 ± 0.02 to 8.0 ± 0.02 ppm in Daneka, and zinc increase from 14.0 ± 0.5 to 18.0 ± 0.2 ppm. The ranges of the determined Fe, Se, Zn, and I micronutrients in UTC tomato variety are respectively as follows: 14.0± 0.03 to 18.0± 0.03 ppm, 3.1± 0.03 to 7.0± 0.01 ppm, 15.6± 0.04 to 18.0± 0.01 ppm, and 7.0± 0.02 to 9.1± 0.02 ppm. Therewith, the concentrations of micronutrients increase with an increase in neem extract concentrations (p < 0.05). more studies are needed to make neem extract as a cheap, safe, and accessible substance for tomato preservation.
Pengembangan Modul Kimia berbasis Relating, Experiencing, Applying, Cooperating dan Transfering (REACT) bermuatan Etnokimia Anisatul Insyiroh
Journal of Tropical Chemistry Research and Education Vol. 5 No. 2 (2023)
Publisher : Chemistry Education Department, Faculty of Tarbiyah and Education, UIN Sunan Kalijaga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/jtcre.2023.52-02

Abstract

Penelitian pengembangan ini bertujuan untuk mengembangkan modul kimia berbasis relating, experiencing, applying, cooperating dan transferring (REACT) bermuatan etnokimia pada materi asam basa dan mengetahui kualitas produk berdasarkan penilaian ahli materi,ahli media, guru kimia dan respon peserta didik. Penelitian ini merupakan penelitian pengembangan (Research & Development) dengan model pengembangan ADDIE yang terdiri dari 5 tahap yaitu analysis, design, development, implementation, dan evaluation. Namun penelitian ini dibatasi sampai tahap ketiga yaitu development. Penilaian kualitas produk dilakukan oleh satu ahli materi, satu ahli media, empat guru Kimia SMA/MA dan direspon oleh sepuluh peserta didik SMA/MA. Instrumen penelitian berupa lembar penilaian kualitas produk dengan skala Likert dan lembar respon siswa skala Guttman. Teknik analisis data yang digunakan yaitu dengan mengubah data kualitatif menjadi data kuantitatif. Hasil produk pengembangan berupa modul berukuran B5 berisi materi asam basa yang disusun sesuai dengan rangkaian strategi pembelajaran REACT dan dilengkapi dengan muatan etnokimia. Hasil penilaian ahli materi memperoleh persentase 91,8% dengan kategori Sangat Baik (SB), penilaian ahli media memperoleh persentase 92,63% dengan kategori Sangat Baik (SB), dan penilaian guru Kimia SMA/MA memperoleh persentase 92,5% dengan kategori Sangat Baik (SB). Sedangkan respon peserta didik terhadap produk sangat positif dengan persentase 96,7%.
Pengembangan Buku Pengayaan berbasis Kontekstual pada Materi Pencemaran Air sebagai Alternatif Sumber Belajar Mandiri Suemi
Journal of Tropical Chemistry Research and Education Vol. 5 No. 2 (2023)
Publisher : Chemistry Education Department, Faculty of Tarbiyah and Education, UIN Sunan Kalijaga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/jtcre.2023.52-03

Abstract

Penelitian pengembangan ini bertujuan untuk mengembangkan buku pengayaan berbasis kontekstual pada materi pencemaran air sebagai alternatif sumber belajar mandiri peserta didik SMA/MA dan mengetahui kualitas buku pengayaan yang telah dikembangkan dan mengetahui respon peserta didik terhadap buku pengayaan yang telah dikembangkan. Penelitian ini merupakan penelitian pengembangan (Research & Development) dengan model pengembangan 4D yaitu define (pendefinisian), design (perancangan), development (pengembangan), dan disseminate (penyebarluasan). Penelitian ini hanya dilakukan sampai tahap development (pengembangan). Kualitas produk dinilai oleh satu dosen ahli materi, satu dosen ahli media, empat pendidik SMA/MA dan direspon oleh sepuluh peserta didik SMA/MA kelas X. Instrumen penelitian yang digunakan yaitu lembar penilaian kualitas produk dengan skala Likert dan lembar respon peserta didik skala Guttman. Teknik analisis data dilakukan dengan mengubah data hasil penilaian dan respon yang berupa data kualitatif menjadi data kuantitatif. Kemudian dianalisis setiap aspeknya dengan pedoman kriteria kategori penilaian ideal dan presentase keidealan untuk menentukan kualitas buku pengayaan yang dikembangkan. Hasil penelitian menunjukkan bahwa buku pengayaan berbasis kontekstual pada materi pencemaran air sebagai alternatif sumber belajar peserta didik dari penilaian ahli materi mendapatkan kategori baik (B) dengan presentase keidealan 80%. Penilaian ahli media mendapatkan kategori sangat baik (SB) dengan presentase keidealan 86% dan penilaian pendidik SMA memperoleh kategori sangat baik (SB) dengan presentase keidealan 89,29% serta respon 10 peserta didik mendapatkan presentase keidealan 90,83%.
Pengembangan Buku Teks bermuatan Higher Order Thinking Skills (HOTS) pada materi Gugus Fungsi Kamaludin, Agus; Ismiatun
Journal of Tropical Chemistry Research and Education Vol. 5 No. 2 (2023)
Publisher : Chemistry Education Department, Faculty of Tarbiyah and Education, UIN Sunan Kalijaga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/jtcre.2023.52-04

Abstract

Penelitian ini bertujuan untuk pengembangan buku teks bermuatan Higher Order Thinking Skill (HOTS) pada materi gugus fungsi. Model pengembangan dalam penelitian ini menggunakan model pengembangan ADDIE yang terdiri dari tahap analyze, design, development, implementation, dan evaluation. Penilaian produk dilakukan oleh satu ahli materi, satu ahli media, empat guru kimia SMA/MA dan direspon oleh sepuluh siswa. Instrumen penelitian berupa lembar validasi ahli, lembar penilaian kualitas produk dan lembar respon siswa. Produk berupa buku teks bermuatan HOTS pada materi gugus fungsi. Buku teks ini memuat materi gugus fungsi sesuai kompetensi kurikulum 2013 yang dibagi ke dalam 7 subbab yaitu pengertian gugus fungsi, alkohol, eter, aldehid, keton, asam karboksilat, serta ester. Hasil penelitian menunjukan bahwa penilaian oleh ahli materi memperoleh skor rata-rata 45 dari skor maksimal 50 dengan persentase keidealan 90% sehingga termasuk dalam kategori sangat baik (SB). Hasil validasi oleh ahli media memperoleh skor 30 dari skor maksimal 30 dengan persentase keidealan 100% dan termasuk dalam sangat baik (SB). Hasil penilaian dari empat guru kimia SMA/MA memperoleh skor rata-rata 69,5 dari skor maksimal ideal 80 dengan persentase keidealannya 86,86% dan termasuk kategori sangat baik (SB). Buku ini juga direspon positif oleh siswa dengan persentase sebesar 98%.
Culinary in Islamic-Javanese Cultural Heritage from a Chemistry Perspective Zamhari, Muhammad
Journal of Tropical Chemistry Research and Education Vol. 5 No. 2 (2023)
Publisher : Chemistry Education Department, Faculty of Tarbiyah and Education, UIN Sunan Kalijaga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/jtcre.2023.52-05

Abstract

Food plays a significant role in the religious rituals of Java, specifically within the realm of Islam, where special foods are prepared and consumed during religious ceremonies and celebrations, imbuing spiritual practices with a unique cultural essence. Understanding the chemistry behind these foods is essential for comprehending their health benefits and their embodiment of noble values within Javanese and Islamic cultures. This article seeks to delve into the chemistry of various cultural heritage foods from an Islamic-Javanese standpoint. To achieve this, a thorough literature review was conducted, focusing on culinary practices embedded within the Islamic-Javanese cultural heritage and exploring the corresponding chemical explanations. The research employed a systematic and meticulous search across academic databases, online libraries, and search engines to gather a broad range of perspectives, theories, and empirical evidence. Food, as a reflection of culture, serves both practical and symbolic roles within a particular cultural community. It serves as a manifestation of the values, traditions, and identity of the cultural group, while also meeting the physiological needs of individuals by providing essential nutrients and energy. Beyond mere sustenance, food holds utilitarian value by ensuring survival and promoting overall well-being. By delving into the chemistry of these cultural heritage foods, this article aims to shed light on their significance within the Islamic-Javanese context, uncovering the intricate interplay between chemistry, culture, and spirituality.
Analysis of Basic Laboratory Skills of Science Education Students Using Pictorial-Based Instruments Rahayu, Dea Santika; Muqtada, Moh. Rikza
Journal of Tropical Chemistry Research and Education Vol. 5 No. 2 (2023)
Publisher : Chemistry Education Department, Faculty of Tarbiyah and Education, UIN Sunan Kalijaga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/jtcre.2023.52-06

Abstract

Laboratory skills are an important aspect of natural sciences in schools and higher education, often linked to psychomotor aspects of learning. Several studies have developed several methods that can be used to evaluate laboratory skills, for example, the use of observation sheets equipped with rubrics. However, often using this method requires a longer learning time. Therefore, there is a need for research that examines how to evaluate students' basic laboratory skills. This research aims to analyze students' basic laboratory skills using pictorial-based instruments. This research method uses descriptive qualitative. This instrument is equipped with pictures that provide visualization. The basic laboratory skills are focused on experiments on making standard solutions from solids, making standard solutions from concentrated solutions, and acid-base titrations. Based on the analysis, it was found that the basic laboratory skills of science students in the experiment of making standard solutions from solids contained six basic skills, including selecting tools, weighing solids, transferring solids into a beaker, putting them in a volumetric flask, marking the solution, reading the meniscus mark. In the experiment of making a standard solution, there are five basic skills, namely selecting tools, taking the stock solution, transferring it into a volumetric flask, marking the solution, and reading the meniscus mark. The titration experiment consists of 8 skills, including selecting equipment, taking the analyte solution, taking the titrant solution, adding a titration indicator, using the titration technique, observing the endpoint of the titration, reading the meniscus, and calculating the solution's concentration.

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