Pyridinium-Betain compounds of the general formula (A): ##STR00001## wherein R1 is H or a primary amino acids that is attached to the structure, X is OH or its ionized form O.sup.-, Y is OH, SH, or their ionized forms O.sup.- and S.sup.-, Z is H, an alkyl group, or a glycosidic group, or a phosphate or ester derivative thereof, and n is an integer of 0 to 4 to represent the chain length of the compound. A counter-ion is associated with these compounds and is preferably an ion of sodium, potassium, ammonium, calcium, magnesium, chloride, nitrate, carbonate, sulphate, phosphate, or the like. These compounds can be used as taste modifiers in various foodstuffs.

 
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> Method for measuring the amount of an organic substance in a food product with infrared electromagnetic radiation

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