Table 1 Ordinal variables used in the linear regression model
From: Statistics-based model for prediction of chemical biosynthesis yield from Saccharomyces cerevisiae
Ordinal variables | Category 1 (subscript C1) | Category 2 (subscript C2) | Category 3 (subscript C3) |
|---|---|---|---|
OVE: number of modified genes or pathways | No modified genes or pathways were present. | One or two modified genes or pathways were present. | More than two modified genes or pathways were present. |
KNO: number of gene knockouts in known competitive pathways | No gene knockouts were performed. | Gene knockouts were performed. | Â |
NUT: nutrient source | Fermentation occurred in defined medium (only including trace amounts of amino acids or vitamins) | Fermentation occured in a very rich medium. | Â |
INT: Intermediate | Intermediate was not added | Intermediate was added | Â |
CUL: cultivation mode | Fermentation occurred in a shaking flask. | Fermentation occurred in a batch, fed-batch, or continuous feed bioreactor. | Â |
OXY: oxygen conditions | Fermentation occurred in aerobic conditions. | Fermentation occurred under oxygen-limited conditions (anaerobic or micro-aerobic). | Â |