SUMMARY The volatiles of canned tomatoes acidified with citric and with malic acid differed significantly from those of control, nonacidified tomatoes and from each other. Tomatoes treated with sugar and acid also differed significantly in volatiles. Blends of tomato juice prepared from various proportions of canned juice and juice reconstituted from tomato powder differed significantly in flavor. Through the application of discriminant analysis (DA) to gas‐liquid chromatographic (GLC) data, blends could usually be predicted correctly from the discriminant equations. Peanuts roasted for 12, 16, 20 and 24 min were similarly evaluated organoleptically and gas chromatographically. For the 3 products above, one or a few peaks were generally not sufficient to characterize the sample. When 10–15 peak areas were used to make the discrimination, each of the 3 products could be catagorized readily according to treatment.
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