橙皮果胶可食性保鲜膜的应用

Searching on the Application of Edible Film Orange Peel Pectin

利用橙皮提取果胶,检测果胶样品的质量,分析得出该果胶产品符合作为食品添加剂的国家标准。利用橙皮果胶为主要原材料制备的薄膜各项指标为:透光率为87.8%,厚度为0.127 mm,抗拉强度为3.983 MPa,断裂伸长率为24.883%。文中还将果胶标准品膜、提取的果胶样品膜和购买的PE膜进行物理特性的分析对比,并应用于猪肉的保鲜,通过分析汁液渗出量、pH值、挥发性盐基氮和细菌总数4个指标的变化,证明橙皮果胶可食性保鲜膜对冷鲜猪肉的保鲜效果明显优于PE塑料保鲜膜,具有良好的实用价值。

Pectin was extracted from pericarp of orange peel.The characteristics of the pection was： luminousness 87.8%,thickness 0.127 mm,tensile strength 3.983 MPa,elongation at break 24.883%.This pectin product met the national standards as food additives.The comparison among films made from pectin standard product,orange peel pectin and PE bought from the market was carried out.The result showed that orange peel pectin edible film was better than PE plastic wrap on preserving cold fresh pork in the following areas： weight losses,pH,TVBN,and total bacterial count. So that orange peel pectin edible film has good practical value.