家/Innovation/消息

27/02/20

保护性生物壳可以延长鸡蛋架子的寿命

PXHERE的鸡蛋
Eggs are very fragile and without proper storage conditions they spoil quickly Copyright:tomada de pxhere[Public domain image]。

速度阅读

  • 新的生物膜延长了鸡蛋的保质期，并保护它们免受真菌和细菌的侵害
  • The biofilm can also cover packages of fruits, vegetables and other foods
  • The innovation could be available at an industrial scale within a year

经过：Rodrigo de Oliveira Andrade

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[SÃO PAULO] A biofilm developed in Brazil could extend the shelf life of eggs in the world’s poorest and hottest regions, where they spoil faster and are vulnerable to germs.

According to its creators, the new technology could extend eggs' lifespan from 30 days to 50, or even 60, days, depending on storage conditions.

该技术将壳聚糖（一种天然聚合物（一种天然聚合物）中提取，该聚合物从甲壳类动物（例如虾，龙虾和螃蟹）的壳中提取 - 四元铵盐，具有抗菌特性的化学化合物，并且在食品工业和家用疗养院中通常用于受控浓度。

从这种混合物中，研究人员获得了直接喷在蛋壳上的液体，或在消毒阶段混合在产品消毒浴中。

一旦液体干燥并返回其初始聚合物状态，它就会形成一种能够防止真菌和细菌在卵表面形成或穿透壳孔的生物膜。

“可以说，这种生物膜是一种社会技术，可用于解决世界发展中地区的饥饿问题，在世界发展中，该技术没有适当的卫生基础设施来保护和维护鸡蛋，水果，蔬菜和其他食物。”

Eduardo José Arruda – Federal University of Grande Dourados, Brazil

预计将在一年内可用于商业用途。

“我们仍在进行其他研究以在工业规模上应用该技术，”联邦格兰德大学（UFGD）工业化学工程师（UFGD）的工业化学工程师，新的Biofilm创造者之一EduardoJoséArruda说。

这项新技术可能有助于与沙门氏菌作斗争，沙门氏菌是一种细菌，可感染约1％的鸡蛋，并引起严重的肠道感染，并出现包括发烧，恶心和呕吐在内的症状。在某些情况下，它甚至可能导致死亡。沙门氏菌在低收入国家特别有害。

Arruda解释说，生物膜能够保护鸡蛋从生产到商业化阶段，从而防止卵通过蒸发而失去水分质量。

“It can be said that this biofilm is a social technology that can be used to meet hunger problems in the world's developing regions, which do not have a proper sanitary infrastructure for the conservation and maintenance of eggs, fruits, vegetables and others foods,” Arruda argues.“The biofilm may also be used to coat other food packages, providing greater mechanical resistance and protection against microorganisms,” Luiz Fernando Gorup, a chemist also at UFGD and biofilm co-creator, tellsSciDev.Net.

Elson Longo, a chemist at São Carlos Federal University, in São Paulo, who did not take part in the research, says the new technology is important because it could protect eggs from temperature variations and damage from shocks during transport.

他告诉他说：“它应该为鸡蛋生产商带来真正的收益，使其在市场上更具竞争力，同时应防止微生物污染主要在贫困地区引起肠道感染的微生物。”SciDev.Net.

新生物膜的一部分是在功能材料开发中心开发的, funded by FAPESP, a donor of SciDev.Net.

这个馅饼ce was produced by SciDev.Net’s Latin America & Caribbean desk.