1.1.1.365 nutrition accumulation of high levels of ascorbate using GalUR gene overepression in tomato fruits. Tomato fruits are considered a major dietary source of vitamin C in many countries, because it is consumed regularly and in large quantities. Tomato also serves as a fruit model for other crops species with fleshy berry. Accordingly, it is very important to monitor and to increase the vitamin C content in tomato fruit, for meeting the consumer demand and health requirements for high nutrition, e.g. by overexpressing D-galacturonate reductase 743465 1.1.1.365 synthesis L-galactonate shows potential applications as an additive to nutrients and cosmetics. AnGar1 variants are developed that represent the a GalA reductases with a higher preference for NADH compared to NADPH. The altered cofactor-specificity enables the coupling of GalA reduction to glycolysis, resulting in higher yields of GalOA when glucose is used as a redox donor. The engineered AnGar1 should prove valuable for D-galacturonic acid utilization in pectin-rich hydrolysates, which contain neutral sugars such as glucose, galactose, or arabinose, all of which are funneled into glycolysis. The NADH-dependent GalA reductases can facilitate the coupling of L-galactonate production to the oxidation of glycerol, an abundant waste product that can be supplemented to pectin-rich hydrolysates -, 763698