摘要:研究了壳聚糖单一膜和壳聚糖-弗罗里达橘子油复合膜的制备,首先对所选精油进行成分分析,然后制备出壳聚糖单一膜和壳聚糖复合膜之后,对样品膜进行性能测试,包括厚度、含水量、水溶性、溶胀性,又对该样品膜的机械性能和抗菌性的测试。通过以上实验,表明在以壳聚糖的6%的量添加的弗罗里达橘子油,具有最大的断裂伸长率为3.08%,在以壳聚糖量10%的量添加的弗罗里达橘子油具有最小的溶胀性和水溶性,其中溶胀性为0.7089g H2O/g,水溶性为0.0008g/100g H2O。在以壳聚糖量10%的量添加的弗罗里达橘子油和其他所比较具有最大厚度,其中厚度为26.65μm,在以壳聚糖量的10%添加的弗罗里达橘子油在具有较强的抗菌性,所添加的精油范围内,随着精油量的增加,复合膜的抗菌性能略有增加,拓展了膜的广泛应用。5324
关键词: 复合膜;壳聚糖;弗罗里达橘子油;膜性能测试
Preparation and characterization of chitosan-Florida mandarin oil composite film
Abstract:Characterization of chitosan single film and chitosan-Florida mandarin oil composite film was investigated. The first, composition of Florida mandarin oil was analyzed by GC-MS. Then chitosan single film and chitosan composite film were prepared, and their properties, including thickness, moisture content, water solubility, swelling, tensile strength, elongation at break and antibacterial property, were determined. Through the above experiments, chitosan film incorporated 6% Florida mandarin oil had the maximum elongation at break of 3.08%, chitosan film incorporated 10% Florida mandarin oil showed minimal swelling index 0.7089g H2O/g and water-solubility 0.0008g/100g H2O. chitosan film incorporated 10% Florida mandarin oil had the maximum thickness, and the thickness was 26.65μm. The antibacterial properties increased slightly with the increasing of Florida mandarin oil, which could make the composite film have a broader application.
Key words:composite film;chitosan;Florida mandarin oil;characterization
目 录
1 绪论 1
1.1 壳聚糖介绍 1
1.2 可食性复合膜的研究进展 2
1.3 本课题研究的目的和意义 5
2 材料与方法 6
2.1 实验材料 6
2.2 实验仪器设备 6
2.3 实验方法 7
2.3.1 单一壳聚糖膜制备 7
2.3.2 壳聚糖复合膜制备 7
2.3.3 弗罗里达橘子油的成分分析 8
2.3.4 膜的性能测定 8
2.3.5 机械性质的测定 9
2.3.6 膜的微观形态 9
2.3.7 抗菌性的测定 9
3 结果与讨论 11
3.1 弗罗里达橘子油的成分分析 11
3.1.1 实验数据 11
3.1.2 结果分析 12
3.2 膜的性能测定结果与分析 13
3.2.1 不同精油添加量对膜厚度的影响 13
3.2.2 不同精油添加量对膜含水量的影响 13
3.2.3 不同精油添加量对膜水溶性的影响 14
3.2.4 不同精油添加量对膜溶胀性的影响 15
3.3 膜的机械性能 16
3.3.1 实验数据 16
3.3.2 结果分析 16
3.4 膜的微观形态 17
3.4.1 实验数据 17
3.4.2 结果分析 18
3.5 膜的抗菌性 18
3.5.1 实验数据 18
3.5.2 结果分析 19
4 结论 20
参考文献 21 添加弗罗里达橘子油的壳聚糖可食膜的性能研究:http://www.youerw.com/shiping/lunwen_2315.html