A HUMAN NECESSITIES
A23 FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
A23B PRESERVATION OF FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES; CHEMICAL RIPENING OF FRUIT OR VEGETABLES
A23B7/00 Preservation of fruit or vegetables; Chemical ripening of fruit or vegetables
A23B7/14 Preserving or ripening with chemicals not covered by group A23B7/08 or A23B7/10
A23B7/153 in the form of liquids or solids
A23B7/157 Inorganic compounds