TABLE 1. Characteristics of gram-negative, oxidase-positive Neisseria and related species of human origin

Species Acid from Superoxol Reduction of nitrate Polysaccharide from sucrose Tributyrin hydrolysis
Glucose Maltose Lactose Sucrose Fructose
N. gonorrhoeae + – – – – + – – –
N. meningitidis + + – – – + – – –
N. lactamica + + + – – + – – –
N. cinerea* – – – – – + – – –
N. polysaccharea + + – – – + – – –
N. subflava† + + – V V + – V –
N. sicca + + – + + + – + –
N. mucosa + + – + + + + + –
N. flavescens – – – – – + – + –
N. elongata§ – – – – – – – – –
Branhamella catarrhalis – – – – – + + – +
Kingella denitrificans + – – – – – + – –

Abbreviations: + = strains typically positive but genetic mutants might be negative; – = negative; V = variable.
* Certain strains grow on selective media for the isolation of N. gonorrhoeae.
† Includes biovars subflava, flava, and perflava. N. subflava biovar perflava strains produce acid from sucrose and fructose and produce polysaccharide from sucrose;
N. subflava biovar flava strains produce acid from fructose; N. subflava biovar flava and N. subflava biovar subflava do not produce polysaccharide.
§ Rod or coccobacillus.