Pramitasari Rianita, Gunawicahya Levina Natasha, Anugrah Daru Seto Bagus
Food Technology Study Program, Faculty of Biotechnology, Atma Jaya Catholic University of Indonesia, Tangerang 15345, Indonesia.
Biotechnology Study Program, Faculty of Biotechnology, Atma Jaya Catholic University of Indonesia, Tangerang 15345, Indonesia.
Polymers (Basel). 2022 Oct 3;14(19):4142. doi: 10.3390/polym14194142.
The increase in new technology and consumer demand for healthy and safe food has led to the development of smart packaging to help consumers understand food conditions in real time. The incorporation of red dragon fruit peel anthocyanin into cassava starch and chitosan films was used in this study as a color indicator to monitor food conditions. This indicator film was generated using the solvent-casting method. The mechanical, morphological, and physicochemical characterizations of the film were studied, and food freshness monitoring was carried out. The results showed that adding red dragon fruit peel anthocyanin increased up to 94.44% of the antioxidant activity. It also improved its flexibility, indicated by the lowest tensile strength (3.89 ± 0.15 MPa) and Young's modulus (0.14 ± 0.01 MPa) and the highest elongation at break (27.62 ± 0.57%). The indicator film was sensitive to pH, which was indicated by its color change from red to yellow as pH increased. The color of the film also changed when it was used to test the freshness of packaged shrimp at both room and chiller temperatures. According to the results, the indicator film based on cassava starch-chitosan incorporated with red dragon fruit peel anthocyanin showed its potential as a smart packaging material.
新技术的增加以及消费者对健康安全食品的需求促使了智能包装的发展，以帮助消费者实时了解食品状况。本研究将红龙果皮花青素掺入木薯淀粉和壳聚糖薄膜中，用作监测食品状况的颜色指示剂。该指示剂薄膜采用溶液浇铸法制备。对薄膜的机械性能、形态和物理化学特性进行了研究，并开展了食品新鲜度监测。结果表明，添加红龙果皮花青素后，抗氧化活性提高了94.44%。它还改善了薄膜的柔韧性，表现为最低的拉伸强度（3.89±0.15兆帕）和杨氏模量（0.14±0.01兆帕）以及最高的断裂伸长率（27.62±0.57%）。指示剂薄膜对pH值敏感，随着pH值升高，其颜色从红色变为黄色。当用于测试室温及冷藏温度下包装虾的新鲜度时，薄膜颜色也会发生变化。根据结果，掺入红龙果皮花青素的木薯淀粉-壳聚糖基指示剂薄膜显示出作为智能包装材料的潜力。
