Growth of Chilomonas paramecium in Simple Organic Media

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Abstract
Isomers of monohydric alcohols from methyl through n-hexyl, normal and iso- fatty acids from formic through n-caprylate, glycerol, sorbitol, D-glucose, D-fructose and D-galactose were tested for ability to support growth of Chilomonas paramecium in the 1st transfer when added to a salt-thiamine basal medium. All the straight-chain, even-number acids and monohydric alcohols were equally satisfactory as indicated by initial lag period, mean generation time and max. population. Straight-chain, odd-number acids and monohydric alcohols inhibited growth on these even-number compounds, decreasing max. populations and increasing initial lag and mean generation time. Branched chain and polyvalent compound neither inhibited nor supported growth.

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