The use of plastics from petrochemical resources poses environmental impacts, and one of the alternative solutions is the use of starch. The objective of this present work has been to present the literature on starch,...The use of plastics from petrochemical resources poses environmental impacts, and one of the alternative solutions is the use of starch. The objective of this present work has been to present the literature on starch, and to highlight the debate in the development of composite films. The approach adopted was to present the state of the art on starch and thermoplastic starch matrix composites. The work shows that starch is available worldwide and can be used in the manufacture of biodegradable plastics;the debate remains on the reinforcement of thermoplastic starch to improve its physical and mechanical properties poor;then researchers must diversify the reinforcements to see the impact on the properties of thermoplastic starch.展开更多
目的探究茜素的加入对马铃薯淀粉基复合膜理化性质的影响,并评估其氨响应行为。方法以马铃薯淀粉为成膜基质,通过流延法制备淀粉基生物薄膜,并在其内部嵌入天然色素—茜素,制备茜素-马铃薯淀粉复合膜,通过紫外可见吸收光谱、傅里叶红外...目的探究茜素的加入对马铃薯淀粉基复合膜理化性质的影响,并评估其氨响应行为。方法以马铃薯淀粉为成膜基质,通过流延法制备淀粉基生物薄膜,并在其内部嵌入天然色素—茜素,制备茜素-马铃薯淀粉复合膜,通过紫外可见吸收光谱、傅里叶红外光谱等对复合膜的结构进行表征。结果实验表明,添加3 mg/mL的茜素对复合膜的厚度、含水量、水接触角、化学和晶体结构均无明显影响,但显著改善了复合膜的光阻隔性能、拉伸强度、断裂伸长率和热稳定性。在实验室12 W LED T8节能灯正常发光条件下,复合膜对2500 mg/L的氨水表现出肉眼可见的由黄色到紫色的颜色转变,且茜素-马铃薯淀粉复合膜的氨响应行为在循环利用4次后并未表现出衰减。结论茜素可有效改善马铃薯淀粉基复合膜的理化性能,并使复合膜表现出良好的氨响应行为,有潜力应用于高蛋白食品新鲜度的日光下可视化检测。展开更多
文摘The use of plastics from petrochemical resources poses environmental impacts, and one of the alternative solutions is the use of starch. The objective of this present work has been to present the literature on starch, and to highlight the debate in the development of composite films. The approach adopted was to present the state of the art on starch and thermoplastic starch matrix composites. The work shows that starch is available worldwide and can be used in the manufacture of biodegradable plastics;the debate remains on the reinforcement of thermoplastic starch to improve its physical and mechanical properties poor;then researchers must diversify the reinforcements to see the impact on the properties of thermoplastic starch.
文摘目的探究茜素的加入对马铃薯淀粉基复合膜理化性质的影响,并评估其氨响应行为。方法以马铃薯淀粉为成膜基质,通过流延法制备淀粉基生物薄膜,并在其内部嵌入天然色素—茜素,制备茜素-马铃薯淀粉复合膜,通过紫外可见吸收光谱、傅里叶红外光谱等对复合膜的结构进行表征。结果实验表明,添加3 mg/mL的茜素对复合膜的厚度、含水量、水接触角、化学和晶体结构均无明显影响,但显著改善了复合膜的光阻隔性能、拉伸强度、断裂伸长率和热稳定性。在实验室12 W LED T8节能灯正常发光条件下,复合膜对2500 mg/L的氨水表现出肉眼可见的由黄色到紫色的颜色转变,且茜素-马铃薯淀粉复合膜的氨响应行为在循环利用4次后并未表现出衰减。结论茜素可有效改善马铃薯淀粉基复合膜的理化性能,并使复合膜表现出良好的氨响应行为,有潜力应用于高蛋白食品新鲜度的日光下可视化检测。