A Rehmannia glutinosa caffeic acid O-methyltransferase functional identification: Reconstitution of the ferulic acid biosynthetic pathway in Saccharomyces cerevisiae using Rehmannia glutinosa enzymes.

Rehmannia glutinosa produces many pharmacological natural components, including ferulic acid (FA) which is also an important precursor of some medicinal ingredients, so it is very significant to explore FA biosynthesis for enhancing the production of FA and its derivations. This study aimed to determine and reconstitute the R. glutinosa FA biosynthetic pathway from phenylalanine (Phe) metabolism in Saccharomyces cerevisiae as a safe host for the biosynthesis of plant-derived products.

[Emission Inventory and Emission Factors of Volatile Organic Compounds (VOCs) from Architectural Adhesives].

Architectural decoration is an important anthropogenic emission source of VOCs in China, and there are few studies on the emission of VOCs from architectural adhesives. In this study, the VOCs content level and emission factors of various architectural adhesives were measured and then, a VOC emission inventory of architectural adhesives in China from 2013 to 2017 was established by a top-down emission factor method. Results showed that the comprehensive VOCs emission factor of architectural adhesives was 97.