響應(yīng)面優(yōu)化枇杷果核加工淀粉膜的研究

材料科學(xué)論文編號(hào):CL038  論文字?jǐn)?shù):11153,頁(yè)數(shù):24

目  錄
中文摘要 I
英文摘要 II
目錄 III
1. 緒論 1
 1.1 引言 1
 1.2 枇杷核淀粉的用途 1 
 1.3 可食性包裝薄膜的研究進(jìn)展 3
 1.3.1可食性包裝薄膜的現(xiàn)狀 3
 1.3.2可食性包裝薄膜的功能特性及其種類 4
2. 實(shí)驗(yàn)部分 6
 2.1 儀器與試劑 6
 2.2 枇杷核淀粉的提取  6
 2.3 枇杷核淀粉膜的制備  7
 2.4 淀粉膜性能的測(cè)試  7
3. 結(jié)果與討論 9
 3.1 淀粉膜制備條件的優(yōu)化 9
 3.2 中心組合試驗(yàn)設(shè)計(jì)和結(jié)果回歸分析 11
 3.3 淀粉膜性能影響的響應(yīng)面分析 14
 3.4 討論 18
4．總結(jié)與展望 19
致謝 20
參考文獻(xiàn) 21

摘 要：以浙江省余杭縣塘棲枇杷核為原料，研究枇杷果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(duì)枇杷核淀粉薄膜機(jī)械性能等的單因素試驗(yàn)的基礎(chǔ)上，通過中心組合試驗(yàn)設(shè)計(jì)和響應(yīng)面分析優(yōu)化獲得最佳制備工藝。結(jié)果表明，甘油和淀粉對(duì)膜的斷裂伸長(zhǎng)率、拉伸強(qiáng)度和透油性均有顯著影響，卡拉膠對(duì)膜的斷裂伸長(zhǎng)率有顯著影響，海藻酸鈉對(duì)膜的透油性有顯著影響。由實(shí)驗(yàn)得當(dāng)?shù)矸蹪舛葹?8g·L-1，海藻酸鈉濃度為7g·L-1，甘油濃度為11.25mL·L-1，卡拉膠濃度為1.25g·L-1時(shí)，淀粉薄膜的拉伸強(qiáng)度、斷裂伸長(zhǎng)率、溶脹性和透油性等各項(xiàng)性能指標(biāo)均較優(yōu)。本實(shí)驗(yàn)的制備工藝，能很好保證枇杷果核淀粉薄膜具有良好的機(jī)械性能，適合進(jìn)一步中試放大。

關(guān)鍵詞：枇杷果核；淀粉；薄膜；研究

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 the condition ，the starch of tensile strength, elongation at break, Swelling and through oil and other performance indicators are optimum．In this study, the preparation process can ensure the good mechanical properties of edible films of loquat core starch，and easy to scale-up.

Keywords：loquat core; starch; film