Data/hora: 16/06/2024 06:22:20

Provedor de dados: | 5
País: | France
Título: | Production and consumption of B group vitamins in situ.
Autores: | Kurata, A.
Data: | 1984-10
Ano: | 1984
Palavras-chave: | Phytoplankton; Microorganisms; Bacteria; Metabolism; Biological production; Vitamin B; Fresh water.
Resumo: | The changes in concentration of thiamine, biotin and vitamin B sub(12) in water of the soaked bottles for 6 h in situ in the north basin of Lake Biwa were examined successively over 30 hours. The concentrations of the vitamins changed comparatively during 6 h. soaking in situ. Generally, the concentrations of thiamine, biotin and vitamin B sub(12) were in high levels in the morning and in low levels in evening both in the soaked bottles and in the surrounding water. The fluctuation ranges in concentration of vitamins in a 5 m deep layer were greater than those in thermocline. From the data obtained with the soaked bottles in situ, it was supposed that the decrease of vitamins in concentration during the daytime surpass consumption of vitamins by phytoplankton rather than the production, on the contrary the increase of vitamins in concentration during the night time surpassed authochthonous production of vitamins by various kinds of microorganisms rather than the consumption of vitamins by phytoplankton. Some of the bacteria produced two or three kinds of vitamins simultaneously.
Tipo: | Text
Idioma: | Inglês
Identificador: | http://archimer.ifremer.fr/doc/1984/acte-958.pdf
Editor: | Actes de colloques. Ifremer Brest [ACTES COLLOQ. IFREMER.]. 1986
Relação: | http://archimer.ifremer.fr/doc/00000/958/
Formato: | application/pdf