초록

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Abstract ▼ AI-Helper

Ninty four strains of lysine producing micro-organisms in culture broth during fermentation have been isolated from soil and other sources. From the comparison of the amounts of lysine produced, 6 strains have been selected as the potentially useful strains, and identified tentatively as Micrococcus...

Ninty four strains of lysine producing micro-organisms in culture broth during fermentation have been isolated from soil and other sources. From the comparison of the amounts of lysine produced, 6 strains have been selected as the potentially useful strains, and identified tentatively as Micrococcus sp. (S-16-4), Corynebactcrium sp. (S-27-12, S-281-3, CBY-4) and Brevibacterium sp. (M-6-71, F-629-2), respectively. From the further studies with Corynebacterium sp., S-27-12, its maximum yield was found to be 4mg lysine/ml of synthetic medium, consist of glucose(7.5%), urea(0.6%), $KH_2PO_4(0.2%)$, $Na_2HPO_4(0.05%)$, $MgSO_4{\cdot}7H_2O(0.03%)$, $MnSO_4{\cdot}4H_2O(0.001%)$ and $FeSO_4{\cdot}7H_2O(0.0005%)$ at pH 7.2 and $30^{\circ}C$ after 4 days.