An apparatus for enzymatic inactivation of puree, or juice, from vegetable or animal food, having a treatment section of food of vegetable origin obtaining a treated product. The treated product exiting from the treatment section is directed towards an extraction section. The treated product enters the extraction section at a temperature T.sub.0. The apparatus also has a storage and recirculation section having an enzymatic inactivation circuit crossed by a hot product at a temperature T.sub.2 normally about 85° C.-90° C. The main product present in the extraction section is struck, near the sieve, or directly on its surface, by a flow of hot product coming from the enzymatic inactivation section. The mixture so obtained in the extraction section has at least one part of inactivated product and is then discharged through an outlet.

An apparatus for enzymatic inactivation of puree, or juice, from vegetable or animal food, having a treatment section of food of vegetable origin obtaining a treated product. The treated product exiting from the treatment section is directed towards an extraction section. The treated product enters the extraction section at a temperature T.sub.0. The apparatus also has a storage and recirculation section having an enzymatic inactivation circuit crossed by a hot product at a temperature T.sub.2 normally about 85° C.-90° C. The main product present in the extraction section is struck, near the sieve, or directly on its surface, by a flow of hot product coming from the enzymatic inactivation section. The mixture so obtained in the extraction section has at least one part of inactivated product and is then discharged through an outlet.

A method for preparing a purple sweet potato concentrate that is free from starch, rich in anthocyanins, phenolic compounds, minerals, and soluble dietary fiber with low viscosity, attractive color, and with natural sweetness is presented. The method first prepares and liquefies the purple sweet potatoes and fixes the colorization by adjusting the pH value. Next, amylase and an enzyme complex of hemicellulase, pectinase, cellulase, glucoamylase and protease are added in sequence under conditions effective to produce the juice with the above mentioned properties. The juice is then centrifuged and membrane-filtered to produce a purified purple sweet potato juice which is vacuum-concentrated to yield a purple sweet potato concentrate. Purple sweet potato powder can be obtained by vacuum drying the sediment and concentrate mixture.

A method for preparing a purple sweet potato concentrate that is free from starch, rich in anthocyanins, phenolic compounds, minerals, and soluble dietary fiber with low viscosity, attractive color, and with natural sweetness is presented. The method first prepares and liquefies the purple sweet potatoes and fixes the colorization by adjusting the pH value. Next, amylase and an enzyme complex of hemicellulase, pectinase, cellulase, glucoamylase and protease are added in sequence under conditions effective to produce the juice with the above mentioned properties. The juice is then centrifuged and membrane-filtered to produce a purified purple sweet potato juice which is vacuum-concentrated to yield a purple sweet potato concentrate. Purple sweet potato powder can be obtained by vacuum drying the sediment and concentrate mixture.

Embodiments related to juicing systems including juicers for extracting juice from food matter contained within juicer cartridges are described.

Embodiments related to juicing systems including juicers for extracting juice from food matter contained within juicer cartridges are described.

Juice extraction using multiple pairs of juice extractors and comminutors which reduce the food pieces into successively smaller pieces with juice extraction occurring after each comminuting step. Coarse food pieces are pressed with extracted juice directed to a juice holding tank. The pressed coarse chop food pieces fall into the hopper of a second comminutor which performs a medium chop on the now pressed but still coarse chopped food pieces. The medium chopped food pieces are then fed from the second comminutor into the juice extraction chamber of a second juice extractor whereupon the medium chopped food pieces are pressed with extracted juice directed to a juice holding tank. Any number of comminutor and juice extraction pairs may be used in serial fashion to optimize the percentage of juice extracted in a minimum amount of time.

Juice extraction using multiple pairs of juice extractors and comminutors which reduce the food pieces into successively smaller pieces with juice extraction occurring after each comminuting step. Coarse food pieces are pressed with extracted juice directed to a juice holding tank. The pressed coarse chop food pieces fall into the hopper of a second comminutor which performs a medium chop on the now pressed but still coarse chopped food pieces. The medium chopped food pieces are then fed from the second comminutor into the juice extraction chamber of a second juice extractor whereupon the medium chopped food pieces are pressed with extracted juice directed to a juice holding tank. Any number of comminutor and juice extraction pairs may be used in serial fashion to optimize the percentage of juice extracted in a minimum amount of time.

A flavor deterioration inhibitor of the present invention is capable of significantly suppressing the deterioration of flavor due to causes such as light and/or heat. The present invention is directed to a flavor deterioration inhibitor composed of an extract of a cider apple, or comprising an extract of a cider apple as an effective component.

A flavor deterioration inhibitor of the present invention is capable of significantly suppressing the deterioration of flavor due to causes such as light and/or heat. The present invention is directed to a flavor deterioration inhibitor composed of an extract of a cider apple, or comprising an extract of a cider apple as an effective component.