Carbohydrate nutrition of Paul's Scarlet rose cell suspensions
Abstract
Paul's Scarlet rose cells grow equally well on either glucose, fructose, sucrose, or trehalose as a source of carbohydrate. When fructose-containing medium is autoclaved, it becomes inhibitory to growth. The extent of this inhibition appears to be dependent on the physiological age of the cells. Thus as cells enter the stationary phase, they become progressively more sensitive to inhibition by autoclaved fructose, whereas stationary-phase cells transferred to new medium become less sensitive to autoclaved fructose during the first 24 h. The inhibitory compound or compounds produced when fructose-containing medium is autoclaved have not been identified, but they appear to result mainly from the interaction of fructose with magnesium sulfate.
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