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Registros recuperados: 24 | |
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Max,Belén; Salgado,José Manuel; Rodríguez,Noelia; Cortés,Sandra; Converti,Attilio; Domínguez,José Manuel. |
This work provides a review about the biotechnological production of citric acid starting from the physicochemical properties and industrial applications, mainly in the food and pharmaceutical sectors. Several factors affecting citric acid fermentation are discussed, including carbon source, nitrogen and phosphate limitations, pH of culture medium, aeration, trace elements and morphology of the fungus. Special attention is paid to the fundamentals of biochemistry and accumulation of citric acid. Technologies employed at industrial scale such as surface or submerged cultures, mainly employing Aspergillus niger, and processes carried out with Yarrowia lipolytica, as well as the technology for recovering the product are also described. Finally, this review... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Citric acid; Fermentation; Review; Aspergillus niger. |
Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822010000400005 |
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Martinez-Pacheco,Mauro Manuel; Flores-Garcia,Alberto; Venegas-Gonzalez,Eulalio; Cepeda-Villegas,Mario Alberto. |
Hybrids of Zea mays L. (Buffalo, Falcon, H360 y HV313) were treated with citric acid (2000 ppm). Grain yield, soluble protein and proteolytic activity were monitored when the crop reached physiological maturity. Citric acid was applied before the appearance of the flag leaf, and induced an increase in the grain yield from 4222 to 5780 kg/ha, in the soluble protein from 6.34 to 7.91 mg/mg and into the proteolytic activity from 14.3 to 65.7 µU mg prot-1. This is an increase of 2 to 12 times in the Falcon, H360 and HV313 hybrids, while the Buffalo hybrid responded with less intensity to the treatment with citric acid. In the H360 hybrid treated with citric acid, an increase in the proteolytic activity of aspartyl serine proteases was observed. The results... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Maize; Citric acid; Proteolytic activity. |
Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542011000500007 |
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Registros recuperados: 24 | |
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