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Position: Home > Articles > Preparation of Edible Food Preservative Film FOOD SCIENCE 2011,32 (10) 312-315

可食性食品保鲜膜的研制

作  者:
徐晶;侯菲
单  位:
通化师范学院制药与食品科学系
关键词:
壳聚糖膜;可食性;制作工艺;保鲜膜
摘  要:
采用可食性原料,研制壳聚糖保鲜膜和海藻酸钠复合保鲜膜。将壳聚糖溶于体积分数4%稀醋酸溶液,加入体积分数1%的甘油作增塑剂,0.1%液体石蜡作脱膜剂,在70℃条件下烘干7h,得到壳聚糖膜,该膜厚度为0.100mm,抗拉强度240.0kg/cm2,透光度为89.2%。通过正交试验,确定海藻酸钠复合膜各原料最佳组成为8mg/mL羧甲基纤维素钠、12mg/mL海藻酸钠、8mg/mL明胶、2mg/mL琼脂、体积分数8%的甘油。该膜厚度为0.070mm、抗拉强度为116.7kg/cm2、透光度为71.6%,阻油、阻氧实验结果表明,两种膜均具有良好的阻油、阻氧性能,且弹性和热塑性好。
译  名:
Preparation of Edible Food Preservative Film
作  者:
XU Jing,HOU Fei(Department of Pharmaceutics and Food Science,Tonghua Normal University,Tonghua 134002,China)
关键词:
chitosan composite film;edible;processing technology;fresh-keeping film
摘  要:
Chitosan film and sodium alginate composite film were prepared by using edible raw materials.Chitosan film was prepared by dissolving chitosan in 4% acetic acid solution(V/V),adding 1% glycerin(V/V) as plasticizer and 0.1% liquid paraffin as release agent,and then drying at 70 ℃ for 7 h.The prepared chitosan film was characteristics of 100 nm in thickness,240.0 kg/cm2 in tensile strength and 89.2% light transmittance.The optimal formula for sodium alginate composite film determined by orthogonal array design was 8 mg/mL sodium carboxy methyl cellulose,12 mg/mL sodium alginate,8 mg/mL gelatin,2 mg/mL AGAR and 8%(V/V) glycerin.The resulting sodium alginate composite film was characteristics of 0.070 mm in thickness,116.7 kg/cm2 in tensile strength and 71.6% light transmittance.The results of performance tests showed that both kinds of film exhibited an excellent resistance to oil and oxidants as well as high flexibility and thermoplasticity.

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