枇杷果核加工淀粉膜的研究

材料科學論文編號:CL021  論文字數:7477,頁數:16

目  錄
中文摘要 I
英文摘要 II
目錄 III
1. 緒論 1
 1.1研究背景 1
 1.2研究內容 1
 1.3研究方法及意義 2
2. 實驗部分 3
 2.1 實驗 3
 2.1.1實驗原料   3
 2.1.2主要儀器和設備 3
 2.1.3枇杷核淀粉的制備 3
 2.1.4可食性淀粉膜的制備 3
 2.2  薄膜性能測試 3
 2.2.1膜透油系數測定 4
 2.2.2溶脹倍數測試 4
2.3 可食性薄膜制備條件優化 4
3. 結果與討論 5
 3.1淀粉用量的對膜性能的影響 5
 3.2海藻酸鈉用量對膜性能的影響 6
 3.3卡拉膠用量對膜性能的影響 7
 3.4甘油用量對膜性能的影響 8
 3.5膜性能影響的分析 8
 3.6結論 9
4. 總結與展望 10  
致謝 12
參考文獻 13

摘要：以枇杷核為原料，研究枇杷核淀粉薄膜的制備工藝。探討了在淀粉、海藻酸鈉、甘油和卡拉膠對枇杷核淀粉薄膜機械性能等的單因素試驗的基礎上，通過中心組合試驗設計獲得最佳制備工藝。結果表明，甘油和淀粉對膜的斷裂伸長率、拉伸強度和透油性均有顯著影響，卡拉膠對膜的斷裂伸長率有顯著影響，海藻酸鈉對膜的透油性有顯著影響。最佳生產條件：淀粉68g·L-1，海藻酸鈉7g·L-1，甘油11.25mL·L-1，卡拉膠1.25 g·L-1。本實驗的制備工藝，能很好保證可食性枇杷核淀粉薄膜具有良好的機械性能，適合進一步中試放大，對可食性淀粉膜的制備材料選擇、工藝條件及膜的應用進行了研究 。結果表明：以枇杷核淀粉為成膜主體，配甘油(增塑劑)和海藻酸納和卡拉膠，即可得到比較理想的可食性淀粉膜。
關鍵詞: 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.