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All Journal Alchemy : Journal of Chemistry QUANTUM: Jurnal Inovasi Pendidikan Sains JURNAL TARBIYAH Jurnal Ilmiah Kanderang Tingang BALANGA: Jurnal Pendidikan Teknologi dan Kejuruan Jurnal Pendidikan Measurement In Educational Research
Anggi Ristiyana Puspita Sari
Universitas Palangka Raya
Religion Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Education Energy Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Physics Social Sciences Other

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Perbandingan Sensitivitas Rapid Test Kit dan Indikator Alami untuk Deteksi Boraks pada Tahu di Palangka Raya Faisal Faisal; Abudarin Abudarin; Anggi Ristiyana Puspita Sari
ALCHEMY:Journal of Chemistry Vol 14, No 1 (2026): ALCHEMY: JOURNAL OF CHEMISTRY
Publisher : Department of Chemistry, Faculty of Science and Technology UIN Maulana Malik Ibrahim Malan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/al.v14i1.38032

Abstract

Bleng adalah bentuk tidak murni dari boraks. Bleng memiliki kandungan boraks dengan jumlah 12% dalam 1 kg. Bleng digunakan dalam produk makanan, seperti kerupuk, karena berfungsi sebagai pengenyal, perenyah, dan memberi rasa gurih pada produk yang dibuat. Penelitian ini bertujuan membandingkan sensitivitas dan batas deteksi kadar boraks menggunakan metode uji rapid test kit, indikator alami ubi ungu dan kunyit. Metode penelitian ini menggunakan rapid test kit, indikator alami ubi ungu dan kunyit. Indikator alami ubi ungu, kunyit dan rapid test kit digunakan pada sampel tahu yang mengandung boraks. Dari data yang diperoleh, dapat dilihat bahwa batas deteksi boraks dengan metode test kit berada antara 50 mg/gram dan 75 mg/gram. Metode kertas indikator ubi ungu memiliki sensitivitas yang ditunjukkan mulai dari 75 mg/gram. Metode indikator kunyit memiliki batas deteksi yang lebih tinggi dibandingkan dengan metode lain seperti test kit atau indikator ubi ungu. Dengan demikian, urutan batas deteksi kadar boraks dari yang paling peka adalah rapid test kit 75 mg/g, indikator ubi ungu 75 mg/g, dan indikator kunyit 400 mg/g. Rapid Test Kit dan Indikator ubi ungu jauh peka lebih dari indikator kunyit dalam mendeteksi keberadaan boraks pada tahu. Ubi ungu mampu mendeteksi boraks pada kadar 75 mg/g melalui perubahan warna menjadi kehijauan, sementara kunyit hanya bereaksi pada kadar 400 mg/g dengan perubahan warna menjadi merah kecoklatan.
Development of Educational Statistics Course Worksheets Integrating Mathematics and Chemistry to Enhance Students’ Understanding of Quantitative Concepts Agtri Wulandari; Emy Artuti; Anggi Ristiyana Puspita Sari; Oktaviana Ainun Ratnawati; Istiqomah Yusuf Sholehatun; Ana Yustiana
JURNAL PENDIDIKAN Vol 26 No 2 (2025): Jurnal Pendidikan
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat (LPPM) Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52850/jpn.v26i2.24236

Abstract

Students in teacher education programs often experience difficulties in understanding statistical concepts due to their abstract nature and limited connection to real-world contexts. Nevertheless, statistics serves as a fundamental foundation for developing quantitative thinking skills in science education. This study aimed to develop the KIMATIKA Student Worksheet (Lembar Kerja Mahasiswa/LKM), which integrates mathematics and chemistry concepts in the Educational Statistics course to enhance students’ quantitative understanding. The study employed a Research and Development (R&D) method by adapting the ADDIE model and was conducted up to the development stage. The results of expert judgment validation indicated that the KIMATIKA worksheet demonstrated a very high level of feasibility. The material experts’ evaluation yielded an average score of 4.74 with an ideality percentage of 94.71% (Very Good), while the media experts’ evaluation resulted in an average score of 4.81 with an ideality percentage of 96.25% (Very Good). In addition, students’ evaluations produced an overall average score of 4.58 with an ideality percentage of 91.51%. These findings indicate that the KIMATIKA worksheet is substantively sound, well-structured in its presentation, linguistically appropriate, and visually effective, and it received very positive responses from students in its implementation.
Co-Authors Abdul Hadjranul Fatah Abudarin, Abudarin Agtri Wulandari Ana Yustiana Dian Normalitasari Purnama Emy Artuti Faisal Faisal Fatchiyatun Ni’mah I Made Sadiana, I Made Istiqomah Yusuf Sholehatun Karlinda Karlinda Karlinda Laila Rahmawati Mangido Sitorus Maya Erliza Anggraeni Maya Erliza Anggraeni Maya Mustika Nopriawan Berkat Asi Oktaviana Ainun Ratnawati Putra Jaya Telaumbanua Rizki Nor Amelia Ruli Meiliawati Ruli Meiliawati Sri Rejeki Dwi Astuti Suandi Sidauruk Suandi Sidauruk Suyanta Suyanta Syarpin Syarpin Yamine Yasmine