Subjects: Other Disciplines >> Synthetic discipline submitted time 2023-03-28 Cooperative journals: 《中国科学院院刊》
Abstract： The tightening policy of market regulation for food ingredients and novel foods produced by genetically modified microorganisms has hindered the development of the bio-economy. Here, the comparative studies have been conducted on the market regulations of food ingredients and novel foods produced by biomanufacturing in EU, USA, Japan, and China. These countries are all very concerned about the regulation of food ingredients and novel foods from biomanufacturing, however, they adopt quite different polices. EU is cautious, USA is positive, and Japan is less cautious. Over the past decades, China has been tightening the approval of food ingredients and novel foods produced by genetically modified microorganisms. At present, the whole world is actively responding to the supervision and access of new food ingredients and foods produced by new technologies. It is suggested that a positive application and approval path should be established, unified, and simplified for promoting the marketing of new products in China.
Subjects: Other Disciplines >> Synthetic discipline submitted time 2023-03-19 Cooperative journals: 《中国科学院院刊》
Abstract： One main objective of metabolic engineering is to rewire the metabolic network for efficient production of biochemicals. Due to the complexity of cellular metabolic networks, it is often not straightforward to identify the proper modification targets from thousands of metabolic genes. Therefore, a time-consuming trial & error process is often required for the successful development. Aided by computational modeling of large-scale metabolic networks, one can design optimal pathways for synthesis of objective products, reducing the uncertainty of development and thus accelerating the strain construction process. In this short text, we give brief introduction to metabolic engineering design methods from two aspects: how to modify an organism to produce new chemicals with higher yields, and how to improve the cellular adaptation to the changing process conditions by integrating gene circuits. The computer aided design approach together with automated genome edition technologies, will greatly enhance the efficiency of the construction of artificial cell factories.
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