Studies on the morphological traits and chemical composition of the fruit of six tomato cultivars recommended as raw material for freezing.
Evaluation was made of six tomato cultivars (Micra RS, Dual Plus F1, Pasadena F1, RS 356743 F1, RS 933409 F1, and Sanga F1) produced by Seminis Vegetable Seeds breeders and recommended for freezing in slices or cubes. Of the investigated cultivars only RS 356743 F1 showed morphological traits that did not recommend it for this processing technology. The ratio sugars/acids, the content of protopectins and pectins, and the activity of enzymes does not recommend RS 356743 F1 and Pasadena F1. No significant differences in the content of soluble solids, alkalinity of ash, carotenoids, lycopene, chlorophylls, and peroxidase activity between the cultivars were determined. Differences in the value of the remaining indices were small, not exceeding 10% in the content of dry matter and in active acidity, 20% in the content of sugars, ash, vitamin C, and in the activity of lipase, and 30% in the content of dietary fibre, total nitrogen, total acids, and beta-carotene. The only differences higher than 30% concerned the content of protopectins, pectins, nitrates, and catalase activity.
Kmiecik
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Agricultural University, Faculty of Food Technology, Department of Raw Materials and Processing of Fruit and Vegetables, Kraków, Poland.
Lisiewska
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D055598:Chemical Phenomena; D002627:Chemistry, Physical; D004043:Dietary Fiber / Q000032:analysis; D005519:Food Preservation; D005615:Freezing; D006824:Hybridization, Genetic; D018551:Solanum lycopersicum / Q000033:anatomy & histology* / Q000737:chemistry*; D013045:Species Specificity; D014815:Vitamins / Q000032:analysis
D004043:Dietary Fiber; D014815:Vitamins