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从豆纤维素制成的环保包装薄膜的开发:朝着增值农业工业副产品的方向
Sumi Regmi1, Sandeep Paudel1, Srinivas Janaswamy1
1Department of Dairy and Food Science, South Dakota State University, Brookings, SD 57007, USA.
Foods (Basel, Switzerland)
|January 8, 2025
概括
研究人员从豆废弃物中开发了可生物降解的薄膜,为石油塑料提供了可持续的替代品. 这些环保薄膜在包装应用中显示出有希望的生物降解性和机械性能.
科学领域:
- 材料科学 材料科学 材料科学
- 生物技术是生物技术.
- 环境科学 环境科学
背景情况:
- 基于石油的塑料由于其不可生物降解,造成了严重的环境污染和健康风险.
- 迫切需要可持续的,可生物降解的,与传统塑料无毒的替代品.
- 像大豆这样的农业工业副产品为新材料开发提供了可再生来源.
研究的目的:
- 从从大豆中提取的基纤维素残留物开发可生物降解的薄膜.
- 使用Box-Behnken设计优化膜的配方,以提高机械和屏障性能.
- 描述所开发的基于大豆的薄膜的物理,化学和生物降解性方面.
主要方法:
- 对大豆进行性处理,以提取红纤维素残留物.
- 在ZnCl2中溶解残留物,并与离子和甘油交叉连接.
- 使用Box-Behnken设计优化薄膜配方,评估拉伸强度 (TS),破裂时延伸 (EB) 和水蒸气透性 (WVP).
- 薄膜的颜色,光透度,紫外线阻断,吸水,接触角度和生物降解性的特征.
主要成果:
- 经过优化后的薄膜具有10.4 ± 1.0 MPa的抗拉强度,破裂时的延长率为9.4 ± 1.8%.
- 水蒸气透性 (WVP) 的测量值为3.5 ± 0.4 × 10^-11 g·m^-1·s^-1·Pa^-1.
- 在特定的土壤湿度条件下,这些膜在37天内呈现出90%的降解.
- 片还显示出良好的紫外线阻断能力和受控的吸水能力.
结论:
- 来自豆的可生物降解薄膜为以石油为基础的塑料提供了可行和可持续的替代品.
- 开发的电影通过利用农业废物,为循环经济做出贡献.
- 这一创新为环保包装解决方案和农业部门的经济效益提供了潜在的潜力.
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