Gas chromatographic identification of phenolic acids found in sweet cherry and sour cherry juice

Abstract
In juice of 5 varieties of sour cherries and one variety of sweet cherries the following compounds have been identified: salicylic, cinnamic, gentisic, quinic, p‐coumaric, gallic, and isoferulic acids. Using the method of the internal standard the quantities of these acids were calculated. Except for 2 varieties in all the rest, salicylic acid is contained in the largest quantity. Cinnamic and quinic acids are found in very small quantities.

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