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未来淀粉——淀粉资源的挑战与思考 (网络首发、推荐阅读)
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Future Starch——Challenges and Reflections on Starch from New Sources (Online First, Recommended Article)
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    摘要:

    淀粉是人类活动的主要能量来源和重要的工业原辅料。然而,传统淀粉来源的植物受种植环境影响较大,土地资源有限,产量增长困难,满足不了人口增长的需要;另一方面,传统植物来源的淀粉,其结构相对固定、性能存在局限性,不能完全满足应用的需求,往往要通过结构修饰来调控其性能。化学方法是常用的结构修饰和性能调控手段,但化学反应过程带来的试剂用量受限、化工辅料残留、副产物的产生和淀粉分子中新化学基团的引入等问题,使其作为食品添加剂的使用存在安全隐患。因此,传统淀粉资源已经不能够完全满足人类可持续发展的要求,有必要开发具有“未来特点”的淀粉新资源。未来淀粉来源根据其特点可分为三类:一是将传统淀粉来源植物通过遗传育种或者基因编辑改造,实现淀粉结构的定向或定点改造,使淀粉具有特殊的应用性能;二是能够克服土地和自然环境限制、或者富含淀粉而尚未被充分开发利用的新淀粉资源等;三是不以植物和微生物为载体合成的无细胞合成新型淀粉。本文阐述了未来淀粉发展的必要性、可行性和发展趋势,以高直链淀粉、蜡质淀粉、浮萍淀粉、微藻淀粉、CO2合成淀粉和多糖生物合成淀粉等为例,重点介绍了三类未来淀粉的研究现状和特点,将对未来淀粉的开发研究具有指导意义。

    Abstract:

    Starch serves as the primary energy source for human activities and is utilized as a crucial raw material in various industries. However, due to limited land resources and challenging yield growth, the traditional starch-producing plants are significantly influenced by environmental conditions, which made it unable to meet the demands of population expansion. On the other hand, the traditional source of starch exhibits a relatively stable structure but faces performance limitations that fail to fully meet application requirements. Consequently, structural modifications have been often employed to effectively regulate the performance of starch. Chemical modification is a commonly employed method for controlling performance, but it can pose potential risks to food safety due to the occurrence of chemical reactions caused by limited reagents, residues of chemical auxiliary materials, generation of by-products, and the introduction of new chemical groups into starch molecules. Therefore, the traditional starch resources are inadequate to meet the demands of sustainable development. It is imperative to explore novel starch resources possessing “future characteristics”. According to their characteristics, the sources of future starch could be divided into three categories: firstly, the traditional starch source plants could be genetic breeding or gene edited to achieve directional or site-directed transformation of starch structure, making starch with special application performance; secondly, new starch resources that could overcome the limitations of land and natural environment, or are rich in starch but have not been fully developed and utilized; thirdly, new cell-free synthetic starch that does not take plants and microorganisms as carriers. This review elucidates the necessity, feasibility and development trend of future starch development, and emphasizes on the research status and characteristics of three types of future starch, taking high amylose starch, waxy starch, duckweed starch, microalgae starch, CO2 synthetic starch and polysaccharide biosynthesis starch as examples. This review will provide valuable guidance for future advancements in starch development.

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顾正彪,洪 雁,王 旭.未来淀粉——淀粉资源的挑战与思考 (网络首发、推荐阅读)[J].粮油食品科技,2024,32(2):1-13.

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  • 在线发布日期: 2024-03-22
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