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Solid state fermentation of apple pomace for citric acid production

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Summary

A solid state fermentation process is described for the production of citric acid from apple pomace byAspergillus niger NRRL 567. The yields of citric acid varied with the pomace varieties, and were dependent on (1) the amount of methanol present in the pomace, and (2) the fermentation time and temperature. The process yielded as much as 90 g citric acid/kg apple pomace fermented in the presence of 3–4% methanol at 30°C in five days.

Résumé

Le procédé de fermentation en milieu solide qui est décrit est déstiné à la production d'acide citrique à partir du marc de pommes parAspergillus niger NRRL 567. Les rendements en acide citrique varient suivant les variétés de pommes et dépendent: (1) de la quantité de méthanol présente dans le marc, et (2) du temps de fermentation et de la température. On peut obtenir jusqu'à 90 g d'acide citrique par kg de marc de pommes fermenté, en présence de 3 à 4% de méthanol, à 30°C et en 5 jours.

Resumen

Se describe un proceso de fermentación en estado sólido para la producción de ácido cítrico a partir de residuos de manzana, utilizandoAspergillus niger NRRL 567. La producción de ácido cítrico varió con el tipo de residuo utilizado y dependió de (1) la cantidad de metanol presente en los residuos y (2) del tiempo y la temperatura del proceso. La fermentación puede producir hasta 90 g de ácido cítrico/kg de residuo de manzana, fermentado en presencia de 3–4% de metanol a 30°C de temperatura durante 5 días.

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Hang, Y.D., Woodams, E.E. Solid state fermentation of apple pomace for citric acid production. Mircen Journal 2, 283–287 (1986). https://doi.org/10.1007/BF00933494

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  • DOI: https://doi.org/10.1007/BF00933494

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