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微生物学通报 1999
EFFECTS OF La~(3 ), Ce~(3 ), Nd~(3 ) ON THE GROWTH AND CAROTENOIDS CONTENT OF PHAFFIA RHODOZYMA
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Abstract:
The effects of La3 , Ce3 and Nd3 on the growth, carotenoids content and amino acid compositionof Phaffia rhodozyma were studied. The experimental data showed that lower concentrations of LaCl3 CeCl3, NdCl3barely slightly iuhibited cell growth, but stimulated the carotenoids synthesis of Phaffia rhodozyma .The carotenoids content of P. rhodozyma was increased by 32.1% due to 20mg/L LaCl3 in the media, and36.8% due to 5mg/ L CeCl3, 42.8% due to 50mg/L NdCl3.Some changes in the composition of amino acid caused by the rare earth elements were determined.