Minerals consumption by Acetobacter xylinum on cultivation medium on coconut water
Braz. J. Microbiol.
; 44(1): 197-206, 2013. graf, tab
Article
em En
| VETINDEX
| ID: vti-7969
Biblioteca responsável:
BR1.1
Localização: BR68.1
ABSTRACT
The objective of this work is to verifying the consume of the minerals K, Na, Fe, Mg, P, S-SO4-2,B,N Total Kjedahl (NTK), NO3--N, and NH4+-N in the production of bacterial cellulose by Acetobacter xylinum, according to the medium and the manner of cultivation. The fermentative process was in ripe and green coconut water. K and Na were determined by flame emission photometry, Mg and Fe by atomic absorption spectrophotometry, P by molecular absorption spectrophotometry, S-SO4-2 by barium sulphate turbidimetry, B by Azomethin-H method, NTK by Kjeldahl method, N-NO3-and N-NH4+ by vapor distillation with magnesium oxide and Devarda's alloy, respectively. In Fermentation of ripe coconut water there were higher consumption of K (69%), Fe (84,3%), P (97,4%), S-SO2-2 (64,9%), B (56,1%), N-NO3 (94,7%) and N-NH4+ (95,2%), whereas coconut water of green fruit the most consumed ions were Na (94,5%), Mg (67,7%) and NTK (56,6%). The cultivation under agitation showed higher mineral consumption. The higher bacterial cellulose production, 6 g.L-1, was verified in the coconut water fermentative in ripe fruit, added KH2PO4, FeSO4 and NaH2PO4 kept under agitation.(AU)
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Texto completo:
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Base de dados:
VETINDEX
Assunto principal:
Acetobacter
/
Celulose
/
Alimentos de Coco
/
Fermentação
Idioma:
En
Revista:
Braz. J. Microbiol.
Ano de publicação:
2013
Tipo de documento:
Article