Find in Library
Search millions of books, articles, and more
Indexed Open Access Databases
Denovo Production of Resveratrol by Engineered Rice Wine Strain <i>Saccharomyces cerevisiae</i> HJ08 and Its Application in Rice Wine Brewing
oleh: Huihui An, Guangpeng Li, Zhihan Yang, Meng Xiong, Na Wang, Xitao Cao, Aiqun Yu
Format: | Article |
---|---|
Diterbitkan: | MDPI AG 2024-07-01 |
Deskripsi
Resveratrol is a plant-derived polyphenolic compound with numerous biological activities and health-promoting properties. Rice wine is a popular traditional alcoholic beverage made from fermented rice grains, and widely consumed in Asia. To develop resveratrol-enriched rice wine, a heterologous resveratrol biosynthesis pathway was established by integrating the 4-coumaroyl-CoA ligase (<i>Pc4CL</i>) and the stilbene synthase (<i>VvSTS</i>) from <i>Petroselinum crispum</i> and <i>Vitis vinifera</i> at the δ locus sites of industrial rice wine strains <i>Saccharomyces cerevisiae</i> HJ. The resulting <i>S. cerevisiae</i> HJ01 produced a level of 0.6 ± 0.01 mg/L resveratrol. Next, the resveratrol production was increased 16.25-fold through employing the fused protein <i>Pc4CL</i>::<i>VvSTS</i> with a rigidly linked peptide (TPTP, EAAAK). Then, the strains were further modified by removing feedback inhibition of tyrosine through point mutation of <i>ARO4</i> and <i>ARO7</i>, which integrated at the rDNA region of strain HJ03, and generated strain HJ06, HJ07, and HJ08. Subsequently, the highest resveratrol titer (34.22 ± 3.62 mg/L) was obtained by optimizing fermentation time and precursor addition amount. Finally, resveratrol content of rice wine fermented with strain HJ08 was 2.04 ± 0.08 mg/L and 1.45 ± 0.06 mg/L with or without the addition of 400 mg/L tyrosine after 7 days fermentation.