Prune juice production using cellulase
AssigneeNovo Industri A/S
InventorLaurence H. Posorske
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Abstract
The disintegration process for prune juice production is improved through cooking prunes until substantial disintegration has taken place followed by treatment with cellulase, e.g., the cellulase of Trichoderma reesei, and optionally with a pectinase, which allows for good yield recovery of prune juice through centrifugal separation.
Claims8
A method for obtaining prune juice of viscosity 7-15 cps and exceeding 18.5.degree. Brix which comprises cooking dried prunes until substantial disintegration of the prunes has taken place, then treating the cooked mixture with cellulase for 1/2-6 hours at a concentration of 100 to 7500 units/kg prune slurry, and with pectinase at a concentration of 10 to 200 units/kg prune slurry and separating the prune juice from the solid prune waste.
A method for obtaining prune juice of viscosity 7-15 cps and exceeding 18.5.degree. Brix which comprises cooking dried prunes until substantial disintegration of the prunes has taken place, then treating the cooked mixture with the cellulase of Trichoderma reesei at a concentration of 100 to 7500 units/kg prune slurry at 40.degree.-60.degree. C. for 1-6 hours, treatment time being generally inverse to treatment temperature, and thereafter separating the prune juice from solid prune waste.
Dependencies are inferred from the claim text.