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Improvement of Robusta Coffee Fermentation with Microbial Enzymes.

Pushpa, S. Murthy and Madhava Naidu, M. (2011) Improvement of Robusta Coffee Fermentation with Microbial Enzymes. European Journal of Applied Sciences, 3 (4). pp. 130-139.

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Pectinase was produced by solid- state fermentation utilizing coffee pulp with Aspergillus niger CFR 305. The exogenous pectinase contained 7539 ±70 U/g of enzyme activity. Further the pectinase enzyme was partially decolorized with activated carbon and 80 % recovery of enzyme activity was obtained. The optimum pH and temperature of the crude decolorized pectinase was 4.5 and 50°C respectively. The intensity of decolorisation and recovery of the enzymes was found to be beneficial. Generally, robusta coffee takes longer fermentation duration due to hemicelluloses, pectic substances and sugars making it difficult to fasten demucilage process. Thus to improve primary processing, the isolated pectinase was treated to robusta coffee, Pectolysis enabled reduction of time in demuclisation which was evident with reduction in pH and sugars released. The organoleptic characters on evaluation were on par with traditional fermentation. This is the first report on treatment of the pectinase produced by coffee pulp and application of the same on demucilage of coffee pulp indicating waste recycle with value addition and is also economical for coffee industry.

Item Type: Article
Uncontrolled Keywords: Robusta coffee beans Coffee pulp Pectinase Demucilisation Activated Carbon
Subjects: 600 Technology > 05 Chemical engineering > 04 Fermentation Technology
600 Technology > 07 Beverage Technology > 04 Coffee
Divisions: Plantation Products Spices and Flavour Technology
Depositing User: Food Sci. & Technol. Information Services
Date Deposited: 27 Jun 2017 05:42
Last Modified: 27 Jun 2017 05:42
URI: http://ir.cftri.com/id/eprint/12671

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