Preparation of polypropylene/poly (butylene adipate‐co‐terephthalate) composite films incorporated with melanin for prevention of greening of potatoes,Packaging Technology and Science

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Preparation of polypropylene/poly (butylene adipate‐co‐terephthalate) composite films incorporated with melanin for prevention of greening of potatoes
Packaging Technology and Science ( IF 2.8 ) Pub Date : 2020-07-01 , DOI: 10.1002/pts.2525
Yeong‐Ju Bang ₁ , Shiv Shankar ₁ , Jong‐Whan Rhim ₁

Affiliation

Polypropylene (PP) and poly (butylene adipate‐co‐terephthalate) (PBAT) blend films incorporated with melanin (Mel) were prepared using an extrusion casting method. Scanning electron microscopy results showed that Mel was evenly dispersed to form a well‐blended film. The PP/PBAT/Mel composite films prevented UV light transmittance, especially UV‐B rays. The addition of Mel influenced the surface color, water vapor transmission rate, oxygen transmission rate, and water contact angle of the composite films. After the addition of Mel, the tensile strength and elongation at break in the machine direction of the composite film increased by 30% and 27%, respectively. Packaging potatoes with PP/PBAT/Mel film and storing them under fluorescent light for 6 days effectively prevented the greening of potatoes caused by the production of chlorophyll. The PP/PBAT/Mel films have a high potential for the prevention of greening of potatoes during storage and distribution.

中文翻译：

制备含有黑色素的聚丙烯/聚（己二酸丁二酯-对苯二甲酸丁二醇酯）复合膜，以防止马铃薯变绿

使用挤出流延法制备了掺入黑色素（Mel）的聚丙烯（PP）和聚（己二酸丁二酯-对苯二甲酸丁二酯）（PBAT）共混膜。扫描电子显微镜结果表明，梅尔均匀分散，形成了均匀的薄膜。PP / PBAT / Mel复合膜可防止紫外线透过，尤其是紫外线B射线。Mel的添加影响复合膜的表面颜色，水蒸气透过率，氧气透过率和水接触角。加入Mel后，复合膜的纵向拉伸强度和断裂伸长率分别增加了30％和27％。用PP / PBAT / Mel膜包装土豆，并在荧光灯下保存6天，有效地防止了由叶绿素产生引起的土豆变绿。

更新日期：2020-09-08

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