枇杷果核加工淀粉膜的研究

材料科学论文编号:CL021  论文字数:7477,页数:16

目  录
中文摘要 I
英文摘要 II
目录 III
1. 绪论 1
 1.1研究背景 1
 1.2研究内容 1
 1.3研究方法及意义 2
2. 实验部分 3
 2.1 实验 3
 2.1.1实验原料   3
 2.1.2主要仪器和设备 3
 2.1.3枇杷核淀粉的制备 3
 2.1.4可食性淀粉膜的制备 3
 2.2  薄膜性能测试 3
 2.2.1膜透油系数测定 4
 2.2.2溶胀倍数测试 4
2.3 可食性薄膜制备条件优化 4
3. 结果与讨论 5
 3.1淀粉用量的对膜性能的影响 5
 3.2海藻酸钠用量对膜性能的影响 6
 3.3卡拉胶用量对膜性能的影响 7
 3.4甘油用量对膜性能的影响 8
 3.5膜性能影响的分析 8
 3.6结论 9
4. 总结与展望 10  
致谢 12
参考文献 13

摘要：以枇杷核为原料，研究枇杷核淀粉薄膜的制备工艺。探讨了在淀粉、海藻酸钠、甘油和卡拉胶对枇杷核淀粉薄膜机械性能等的单因素试验的基础上，通过中心组合试验设计获得最佳制备工艺。结果表明，甘油和淀粉对膜的断裂伸长率、拉伸强度和透油性均有显著影响，卡拉胶对膜的断裂伸长率有显著影响，海藻酸钠对膜的透油性有显著影响。最佳生产条件：淀粉68g·L-1，海藻酸钠7g·L-1，甘油11.25mL·L-1，卡拉胶1.25 g·L-1。本实验的制备工艺，能很好保证可食性枇杷核淀粉薄膜具有良好的机械性能，适合进一步中试放大，对可食性淀粉膜的制备材料选择、工艺条件及膜的应用进行了研究 。结果表明：以枇杷核淀粉为成膜主体，配甘油(增塑剂)和海藻酸纳和卡拉胶，即可得到比较理想的可食性淀粉膜。
关键词: 枇杷核；淀粉；薄膜；可食性.

Abstract: Research preparation process of edible films of Loquat core starch, Yuhang County, Zhejiang Province Tangxi loquat cores as raw materials; On the single-factor test of starch, sodium alginate, glycerol and carrageenan, through the central composite experimental design and the response surface Methodology (RSM) analysis and optimization for preparation process. Glycerol and starch have a significant impact on the elongation at break, tensile strength and oil permeability of the film, carrageenan has a significant influence on elongation at break of the film , sodium alginate have a significant impact on oil permeability of the film. The optimum preparation process was determined as: starch 68 g·L-1, sodium alginate 7 g·L-1, glycerol 11.25 mL·L-1 and carrageenan 1.25 g·L-1.In this study, the preparation process can ensure the good mechanical properties of edible films of loquat core starch，and easy to scale-up. Edible starch in this experiment, membrane material selection, process conditions and the application of film studies. The results showed that: The loquat core starch as the main film, with glycerol (plasticizer) and sodium alginate and carrageenan, could be ideal edible starch film. 
Key words: loquat core; starch; response surface methodology; Edible.