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THE DEVELOPMENT and TESTING of A VACUUM ASSISTED JUICE EXTRACTION PROCESS 1
Author(s) -
CUMMING D. B.,
GAYTON R. R.
Publication year - 1990
Publication title -
journal of food processing and preservation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.511
H-Index - 48
eISSN - 1745-4549
pISSN - 0145-8892
DOI - 10.1111/j.1745-4549.1990.tb00143.x
Subject(s) - yield (engineering) , pressing , pulp and paper industry , throughput , vacuum packing , extraction (chemistry) , process engineering , screw press , food science , materials science , chemistry , computer science , chromatography , engineering , metallurgy , composite material , telecommunications , wireless
The application of vacuum during pressing of apple mashes is reported. Apple mash was pressed in a batch system designed to allow application of vacuum to the outlet side of a press screen. Preliminary results indicated significant improvement in throughput rates (up to 100%) when moderate vacuum was applied. Modest yield improvements were also achieved. When the concept was transferred to a commercially available pilot scale screw press, similar results were achieved. Over a wide range of fruit qualities, storage history and varieties (4) production throughput was improved by more than 50% on average using vacuum in the range of 40–70 kPa. Yield improved by 2% (P < 0.01) and without affecting suspended solids in the juice. Improvements in production efficiency would have considerable economic impact over a processing season.