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All Journal Journal of Food and Culinary Physics Learning and Education
Afifah, Azzah
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Economics, Econometrics & Finance Education Physics

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Perubahan Warna dan Total Padatan Terlarut pada Jeruk, Tomat, serta Jagung setelah Perebusan Amalina, Afnita Nur; Amri, Khoirul; Rustanti, Linda Dwi Yuni; Sherina, Sherina; Afifah, Azzah; Rosyadi, Ibnu; Nurmala, Nela; Purusatama, Alvanza Wida; Nieto, Chelsea Savillo; Wijoyo, Suko; Dharmawan, Yasser; Tofir, Saroh Nagija
Journal of Food and Culinary Vol. 8 No. 1 [Juni 2025]
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/jfc.v8i1.11986

Abstract

Buah dan sayur merupakan komoditas hasil pertanian yang dimanfaatkan sebagai bahan baku berbagai jenis produk pangan olahan. Perebusan merupakan salah satu cara pengolahan buah dan sayur menggunakan panas untuk menghasilkan produk yang dapat dikonsumsi. Warna merupakan parameter yang penting untuk menilai tampilan pangan. Selain itu, total padatan terlarut merupakan parameter dasar untuk memberi gambaran terkait jumlah kandungan gula, khususnya pada buah dan sayur. Penelitian ini bertujuan menganalisis perubahan yang terjadi pada kualitas jeruk, tomat, dan jagung berdasarkan parameter warna dan total padatan terlarut setelah dilakukan perebusan. Jeruk, tomat, dan jagung yang sudah dipotong selanjutnya dimasukkan pada rebusan air yang sudah mendidih dan dibiarkan selama 5 menit. Setelah itu diuji warna dan total padatan terlarutnya menggunakan chromameter dan refractometer. Dari penelitian didapatkan bahwa terdapat perubahan parameter warna L* (kecerahan) pada jeruk dari 40,5 menjadi 57,6 yang menunjukkan bahwa warna jeruk semakin terang setelah perebusan. Sebaliknya pada tomat dan jagung terdapat perubahan parameter warna L* dari 58,83 dan 70,77 menjadi 25,8 dan 58,79 yang menunjukkan bahwa warna tomat dan jagung semakin gelap setelah perebusan. Nilai total padatan terlarut ketiga jenis sampel turun setelah perebusan dapat disebabkan karena larutnya sebagian padatan ke dalam air.
The Effect of Problem-Based Learning E-Module on Students’ Problem-Solving Skills in Heat and Heat Transfer Topics at SMAN 2 Koto XI Tarusan Afifah, Azzah
Physics Learning and Education Vol. 3 No. 3 (2025): September Edition
Publisher : Department of Physics Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/ple.v3i3.261

Abstract

This research intends to examine how Problem-Based Learning (PBL)-based e-modules influence students' problem-solving skills regarding heat and heat transfer concepts. The study was driven by the inadequate problem-solving abilities noted in students at SMAN 2 Koto XI Tarusan, mainly because of the prevalence of expository teaching techniques and the constraints of traditional learning resources. A quantitative method utilizing a quasi-experimental non-equivalent control group design was utilized. The sample comprised 60 Grade XI students split into two groups: one group utilized PBL-based e-modules, whereas the other group employed traditional materials. Data were gathered through pretests and posttests consisting of essay questions. The Mann-Whitney U test was utilized because the data did not follow a normal distribution. Findings showed a notable difference in problem-solving skills between the two groups. The experimental group demonstrated a significant rise in the average score of the posttest (77.10) in contrast to the pretest (40.03), whereas the control group saw a slight increase from 44.00 to 58.07. Enhancements were noted in all problem-solving metrics. Analysis of data using the Mann-Whitney test indicated a statistically significant difference in problem-solving abilities between the experimental group and the control group. The findings from the Mann-Whitney test showed a significance level of <0.05, thereby underscoring a significant impact of the use of project-based learning (PBL) e-modules on improving students' problem-solving skills specifically concerning heat and thermal transfer. This methodological framework has demonstrated success in tackling current challenges, aligning with the requirements of 21st-century skills and the implementation of the Independent Curriculum.
Co-Authors Afnita Nur Amalina Amri, Khoirul Dharmawan, Yasser Nieto, Chelsea Savillo Nurmala, Nela Purusatama, Alvanza Wida Rosyadi, Ibnu Rustanti, Linda Dwi Yuni Sherina Sherina, Sherina Tofir, Saroh Nagija Wijoyo, Suko