Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; Department of Food Science and Engineering, College of Biological Sciences and Biotechnology, Beijing Key Laboratory of Forest Food Processing and Safety, Beijing Forestry University, Beijing 100083, China.
Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China.
Int J Biol Macromol. 2023 Jul 15;243:125216. doi: 10.1016/j.ijbiomac.2023.125216. Epub 2023 Jun 8.
Composite films were prepared using a flow casting method, with chitosan and pullulan as film-forming agents and Artemisia annua essential oil as the UV absorber. The utility of the composite films for preserving grape berries was assessed. The effect of the added Artemisia annua essential oil on the physicochemical properties of the composite film was investigated to determine the optimal amount of essential oil that should be added to the composite film. When the Artemisia annua essential oil content was 0.8 %, the elongation at break of the composite film increased to 71.25 ± 2.87 % and the water vapor transmission rate decreased to 0.378 ± 0.007 g‧mm/(m‧h‧kpa). The transmittance of the composite film was almost 0 % in the UV region (200-280 nm) and <30 % in the visible light region (380-800 nm), reflecting the UV absorption by the composite film. Additionally, the composite film extended the storage time of the grape berries. Therefore, the composite film containing Artemisia annua essential oil may be a promising fruit packaging material.
采用流延法制备了壳聚糖/普鲁兰复合膜，以青蒿精油为紫外吸收剂。评估了复合膜对葡萄浆果保鲜的应用。考察了添加青蒿精油对复合膜理化性能的影响，以确定复合膜中添加的精油的最佳用量。当青蒿精油含量为 0.8%时，复合膜的断裂伸长率增加到 71.25±2.87%，水蒸气透过率降低至 0.378±0.007g‧mm/（m‧h‧kpa）。复合膜在紫外区（200-280nm）的透光率几乎为 0%，在可见光区（380-800nm）的透光率<30%，这反映了复合膜对紫外线的吸收。此外，复合膜延长了葡萄浆果的贮藏时间。因此，含青蒿精油的复合膜可能是一种有前途的水果包装材料。
