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Green Algae01:21

Green Algae

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Green algae, also referred to as chlorophytes, are different from red algae in having the chloroplasts containing chlorophylls a and b, which give them their distinct green hue. However, they lack phycobiliproteins, preventing them from developing the red or blue-green pigmentation seen in red algae. In terms of photosynthetic pigment composition, green algae closely resemble plants and share a close evolutionary relationship with them. Taxonomically Green algae belong to Phylum Chlorophyta in...
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面向更绿色的多层包装材料解决方案基于微生物蛋白质和多基酸.

Kiran Reddy Baddigam1, Elodie Guilloud1, Anna J Svagan1

  • 1Department of Fibre and Polymer Technology, Polymeric Materials Division, School of Engineering Sciences in Chemistry, Biotechnology and Health. KTH Royal Institute of Technology, 100 44 Stockholm, SE-100 44 Stockholm, Sweden.

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概括
此摘要是机器生成的。

研究人员使用微生物蛋白 (MPs) 和聚酸酸盐 (PHAs) 开发了新的基于生物的,可生物降解的层状薄膜. 这些薄膜具有出色的氧气屏障特性,克服了对水分敏感性的问题,以获得可持续的包装解决方案.

关键词:
层层材质的成份微生物蛋白质中的微生物蛋白质.包装 包装 包装聚氧甲基酸的多氧甲基酸单细胞蛋白质是一种单细胞蛋白质.

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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.
  • 可持续的包装 包装是可持续的

背景情况:

  • 微生物蛋白 (MPs) 为具有良好的氧屏障特性的塑料薄膜提供了潜力.
  • 湿度敏感性降低了MP膜的氧气屏障性能,类似于EVOH.
  • 需要可持续的,基于生物的替代品来替代化石包装材料.

研究的目的:

  • 使用MP和PHA开发完全基于生物的和可生物降解的层状薄膜.
  • 通过结合防潮层来解决MP薄膜的湿度敏感性.
  • 评估新型层薄膜的屏障性能和可回收性.

主要方法:

  • 用MP核心和PHA外层制造三层层膜.
  • 由于PHAs的低温化,使用热压层层.
  • 氧气和水蒸气的透性,耐水性和紫外线阻断的特征.

主要成果:

  • 实现了具有优良氧气屏障特性 (2cm3mm/m2天) 和低水蒸气透性 (<0.1g mm/m2天) 的层层材料.
  • 电影展示了液体水阻力和紫外线阻能力.
  • 单个层可以被分层进行潜在的回收利用:MP层作为肥料,PHA用于机械回收或堆肥.

结论:

  • 开发的生物基层片为化石包装提供了一个有前途的可持续替代品.
  • 这种新的方法有效地减轻了微生物蛋白质基膜中的水分敏感性.
  • 设计允许使用寿命结束的选项,包括材料回收和堆肥.