Department of Tropical Agriculture and International Cooperation, National Pingtung University of Science and Technology, 1 Shuefu Road, Neipu 91201, Pingtung, Taiwan; Department of Marine, Faculty of Fisheries and Marine, Universitas Airlangga, Campus C UNAIR, Mulyorejo, Surabaya 60115, Indonesia.
Department of Tropical Agriculture and International Cooperation, National Pingtung University of Science and Technology, 1 Shuefu Road, Neipu 91201, Pingtung, Taiwan; Department of Marine, Faculty of Fisheries and Marine, Universitas Airlangga, Campus C UNAIR, Mulyorejo, Surabaya 60115, Indonesia.
Int J Biol Macromol. 2021 Nov 30;191:618-626. doi: 10.1016/j.ijbiomac.2021.09.141. Epub 2021 Sep 25.
Future food packaging trends are shifting to natural and eco-friendly materials developed from biopolymers such as starch and other hydrocolloids, to reduce pollution from synthetic polymers. Arrowroot starch (AS) (3.5, 3, 2.5, and 2%) and iota-carrageenan (IC) (0.5, 1, 1.5, and 2%) were blended to develop biodegradable edible films (AS/IC-BEF), which were compared against AS-BEF (4%, control). All films were characterized based on their physico-mechanical and barrier properties, functional group properties, crystallinity properties, thermal properties, and soil and seawater biodegradation. AS-BEF exhibited smooth surface, high transparency, and completed composting soil biodegradation in 7 days whereas AS/IC-BEF samples exhibited higher tensile strength, water solubility, swelling properties, and barrier properties, but completed biodegradation after 30 days. XRD analysis indicated IC fractions contributed to increase in degree of crystallinity (28.35°) and FTIR signaled strong hydrogen bond interactions between polymers. AS/IC-BEF samples demonstrated melting temperatures between 158 and 190 °C while glass transition temperatures ranged from 153 to 176 °C, which resulted in maximum weight loss around 50-55% at melting temperatures. Finally, AS/IC-BEF samples successfully inhibited weight loss of cherry tomatoes at room temperature and extended their shelf life to 10 days, which indicated that the AS/IC composite material produced a BEF with potential food and industrial applications.
未来的食品包装趋势正在转向由生物聚合物如淀粉和其他水胶体开发的天然和环保材料，以减少合成聚合物造成的污染。箭根薯淀粉 (AS)（3.5%、3%、2.5% 和 2%）和iota-卡拉胶（IC）（0.5%、1%、1.5% 和 2%）混合开发可生物降解的可食用薄膜（AS/IC-BEF），并与 AS-BEF（4%，对照）进行比较。所有薄膜都根据其物理力学和阻隔性能、官能团性能、结晶性能、热性能以及土壤和海水生物降解性进行了表征。AS-BEF 表现出光滑的表面、高透明度，并在 7 天内完成堆肥土壤生物降解，而 AS/IC-BEF 样品表现出更高的拉伸强度、水溶性、溶胀性能和阻隔性能，但在 30 天后完成生物降解。XRD 分析表明 IC 部分有助于提高结晶度（28.35°），FTIR 表明聚合物之间存在强氢键相互作用。AS/IC-BEF 样品的熔融温度在 158-190°C 之间，玻璃化转变温度范围在 153-176°C 之间，这导致在熔融温度下最大失重量约为 50-55%。最后，AS/IC-BEF 样品成功抑制了室温下樱桃番茄的失重，并将其货架期延长至 10 天，这表明 AS/IC 复合材料生产的 BEF 具有潜在的食品和工业应用。
