Yassaroh, Retno Wulandari, Yurohman, Amru Daulay, Singgih Prabowo, Yanuar Sigit Pramana, Derina Paramitasari, Okta Nama Putra, Suparman, Karjawan Pudjianto, Sitti Rahmawati, Achmad Suryadi Nasution
Sago starch is one of the most abundant sources of carbohydrates in Indonesia. The starch modification plays a vital role in improving its functional properties, and hence, could be applied to a broad range of applications. Heat-moisture treatment (HMT) is a physical modification of starch, which involves heating starch at high temperatures but at low moisture content. The HMT of sago starch (15% moisture) was conducted in an autoclave containing fine pressure adjustment and saturated steam production at various temperatures (115, 125, and 135 ºC). The Brabender viscograph showed that the HMT decreased the viscosity and the breakdown of the starch, suggesting an improved mechanical property of the starch, particularly at HMT 135 ºC. The mechanical properties of HMT starch films confirmed an enhanced tensile strength. Adding sappan wood (Caesalpinia sappan L.) extract further improved the films' antioxidant properties and could extend the fresh-cut apples' shelf life during storage in a refrigerator (± 4ºC) for 15 days. This antioxidant-active film successfully delayed the browning effect on fresh-cut apples. Furthermore, this developed food packaging film is environmentally friendly as it could be naturally degraded within two to three weeks © 2026 American Institute of Physics Inc.. All rights reserved.
Research Center for Polymer Technology, National Research and Innovation Agency (BRIN), KST BJ. Habibie, Puspiptek Area Building 460, Tangerang Selatan, 15314, Indonesia; Research Center for Minning Technology - National Research and Innovation Agency (BRIN), KS Iskandar Zulkarnain, Ir. Sutami street km. 15, Tanjung Bintang, Lampung Selatan, 35361, Indonesia; Research Center for Agroindustry, National Research and Innovation Agency (BRIN), Jakarta-Bogor Street Km. 46, Cibinong, West Java, Bogor, 16911, Indonesia; Study Program of Chemistry Education, Faculty of Teacher Training and Educational Sciences, Tadulako University, Palu, 94118, Indonesia; Department of Mathematics, Faculty of Science, Institut Teknologi Sumatera, Terusan Ryacudu street, Way Hui, Jati Mulyo, Lampung, Jati Agung, 35365, Indonesia