https://iontech.ista.ac.id/index.php/iontech <h3 data-start="126" data-end="161"><strong data-start="130" data-end="161">About the Journal (IONTECH)</strong></h3> <p data-start="163" data-end="495">IONTech Journal is an international peer-reviewed scientific journal published by the Institute for Research and Community Service (LPPM), Institut Sains dan Teknologi Al-Kamal (ISTA), Indonesia. The journal publishes high-quality original research articles in the fields of <strong style="color: #ef6c00; margin: 6px 0;" data-start="692" data-end="706">Engineering and Pharmacy</strong>, welcoming contributions from academics, researchers, and practitioners worldwide.</p> <p data-start="497" data-end="582">IONTech Journal is registered with <strong data-start="532" data-end="553">P-ISSN: 2088-3315</strong> and <strong data-start="558" data-end="579">E-ISSN: 2745-7206</strong>.</p> <p data-start="584" data-end="732">This journal applies a <strong data-start="607" data-end="627">full open access</strong> policy. All articles are freely available to read, download, distribute, and cite without any charges.</p> <p data-start="734" data-end="1002">The aim of the journal is to serve as a <strong data-start="774" data-end="800">collaborative platform</strong> for academics, researchers, and practitioners across disciplines to publish the latest findings and innovations that contribute to the advancement of science and the improvement of community welfare.</p> <p data-start="1004" data-end="1084">IONTech Journal is published <strong data-start="1033" data-end="1049">twice a year</strong>, in <strong data-start="1054" data-end="1066">February</strong> and <strong data-start="1071" data-end="1081">August</strong>.</p> Institut Sains dan Teknologi Al-Kamal en-US IONTech Journal 2088-3315 <p><a href="https://creativecommons.org/licenses/by/4.0/" target="_blank" rel="license noopener"><img src="https://i.creativecommons.org/l/by/4.0/88x31.png" alt="Creative Commons License" /></a><br />This work is licensed under a <a href="https://creativecommons.org/licenses/by/4.0/" target="_blank" rel="license noopener">Creative Commons Attribution 4.0 International License </a>.</p> https://iontech.ista.ac.id/index.php/iontech/article/view/191 <p>Beta-carotene is a natural carotenoid compound known as a provitamin A and antioxidant. One potential natural source of beta-carotene is pumpkin (<em>Cucurbita moschata</em> D.). This study aimed to determine the beta-carotene content in pumpkin flesh powder using High-Performance Liquid Chromatography (HPLC), formulate it as an active ingredient in clay mask preparations, and evaluate the physical characteristics of the resulting formulations. The results showed that the beta-carotene content in pumpkin flesh powder was 5.306 mg/g. The samples showed retention times relatively close to that of the beta-carotene standard, with retention times of 6.143 and 6.115 minutes, while the standard showed a mean retention time of 6.180 minutes. The pumpkin flesh powder was then formulated at three concentrations: F1 (1%), F2 (1.5%), and F3 (2%). Physical evaluation showed that the three formulations had relatively similar organoleptic characteristics, were homogeneous, and had pH values of 6.15, 5.40, and 5.47, respectively. The drying times of F1, F2, and F3 were 15 minutes 43 seconds, 19 minutes 20 seconds, and 21 minutes 27 seconds, respectively. Viscosity testing showed a decrease in viscosity with increasing RPM, indicating a tendency toward pseudoplastic flow behavior. Based on these findings, pumpkin flesh powder has potential as an active ingredient in clay mask formulations.</p> Dewi Rahma Fitri Fatria Fajar Fatria Fajar Zahra Zahra Syafei Syafei Hidayat Hidayat Komarudin Komarudin Sjahid Latief Sjahid Latief Copyright (c) 2026 https://creativecommons.org/licenses/by/4.0 2026-08-04 2026-08-04 7 2 01 17 10.62702/iontech.v7i2.191