Abstract
A pilot plant scale pulsed electric field (PEF) continuous processing system was integrated with an asepticpackaging machine to demonstrate the efficacy of PEF technology as a nonthermal pasteurization method for freshorange juice. Major system components include a 40,000 V/17 MWp high voltage pulse generator, a set of multiple stageco-field flow PEF treatment chambers, a fluid handling system for flow control and a Benco Aspack/2 aseptic thermalform packaging machine. Orange juice was processed at a 75 ~ 125 L/h flow rate and packed aseptically into 200 mLplastic cup containers. Microbially enhanced orange juice (MEOJ) tests validated the microbial inactivation effect of thisintegrated PEF system. The PEF treated and aseptically packaged fresh orange juice demonstrated the feasibility of PEFtechnology to extend the product shelf life with very little loss of flavor, vitamin C, and color.
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