Relationship between coffee husk caffeine degradation and respiration of Aspergillus sp. LPBx in solid-state fermentation.

Abstract:

:Studies were carried out in a packed-bed column fermentor using coffee husk as substrate in order to verify a relationship between caffeine degradation and the respiration of Aspergillus sp. LPBx. Fermentation conditions were optimized by using factorial design experiments. The kinetic study showed that the caffeine degradation was related to the development of mold and its respiration and also with the consumption of reducing sugars present in coffee husk. From the values obtained experimentally for oxygen uptake rate and CO2 evolved, we determined a biomass yield of 3.811 g of biomass/g of consumed O2 and a maintenance coefficient of 0.0031 g of consumed O2/(g of biomass x h). The maximum caffeine degradation achieved was 90%.

authors

Brand D,Pandey A,Rodriguez-Leon JA,Roussos S,Brand I,Soccol CR

doi

10.1385/abab:102-103:1-6:169

subject

Has Abstract

pub_date

2002-07-01 00:00:00

pages

169-77

issue

1-6

eissn

0273-2289

issn

1559-0291

journal_volume

102-103

pub_type

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