Selection of promissory crops of wild cherry-type tomatoes using physicochemical parameters and antioxidant contents (original) (raw)
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ANTIOXIDANT AND BIOACTIVE COMPONENTS (CAROTENOID CONTENT) OF TOMATO SELECTION
Twenty tomato genotypes from the Institute for Vegetable Crops, Smederevska Palanka, Serbia were grouped in order to define the start material for breeding of cherry type tomato. Grouping was performed according to the average level of carot-enoid (lycopene, β-carotene), total soluble solids (TSS) and fruit weight by applying PCA (Principal component analysis). The lowest level of lycopene was found in the genotype GK 115 (1.109 mg/100 g), and the highest level of lycopene in genotypes with extremely red fruits GK 128 (4.642 mg/100 g). In the studied genotypes the level of β-carotene varied from 0.015 mg/100g in GK115 to 0.454 mg/100 g in GK 133. The level of TSS was from 4.52 GK104 to 8 GK121. Fruit weight of the researched genotypes was divergent – from 11.8 g in GK133 to 306.4 g in GK121. The first two components explain 70.451% of total variability. The first main component was influenced by two (fruit weight and total soluble solids-TTS) out of four researched traits. The second main component (PC2) was influenced by the lycopene level, the third by β-carotene, while the fourth was influenced by TSS. Correlation matrix proved low correlation among the researched traits included in this study.
Acta Alimentaria, 2020
In this study, six commercial cherry tomato cultivars were analysed for variations in biochemical and technological parameters. Significant differences were observed among cultivars with respect to their technological and functional quality attributes. About 2.48-fold variation in titratable acidity, 2.47-fold variation in total phenolics, 4.13-fold variation in total carotenoid and 7.68-fold variation in lycopene contents were recorded. The total antioxidant activity and respiration rate were also found to vary about 1.85-fold and 1.48-fold, respectively. The highest antioxidant activity and total phenolic content were found in the Cherry tomato hybrid no.1 followed by Pusa cherry tomato-1. Hierarchical cluster analysis revealed that Cherry tomato hybrid no. 1, Pusa cherry tomato-1, and Nagmoti cultivars were abundantly rich in phytochemical and bioactive compounds.
Antioxidant, polyphenol and sensory analysis of cherry tomato varieties and landraces
International Journal of Horticultural Science
Among vegetables produced both for raw consumption and processing, tomato is one of the most important one in Europe, byproduction area and by yield as well. In the past years several study dealt with the investigation of the inner content of tomato, with specialregards to antioxidant content. In this paper cherry tomato varieties and landraces from conventional and organic production were compared.Besides basic investigations sensory analysis were designed and Antioxidant Capacity (AOC) and Total Phenol Content (TPC) weremeasured. The aim of the research was to compare varieties and to study the effect of variety and production methods on antioxidant capacityand sensory profiles.
Tomato is one of the main sources of dietary lycopene intake in humans and its intake in high proportions could therefore be a cheap and easy way of preventing degenerative diseases in developing countries. The present work studies the accumulation pattern of lycopene and beta-carotene as well as the variation of the biochemical and physiological characteristics in Cherry-Nasmata and Var-10 tomato cultivars. Total solid contents range from 5.82 to 7.37% for Cherry-Nasmata cultivar and 6.00 to 10.84% for Var-10 tomatoes. The higher solid contents in Var-10 tomatoes are desirable for longer shelf life of the fruits. The pH values of the two tomato varieties vary between 3.67 and 4.21 except in the postharvest ripened Cherry-Nasmata tomatoes with values above 4.5, rendering the latter unsuitable for tomato processing. Titratable acidity is higher (0.16 - 0.43%) in Cherry-Nasmata ripened on the field than those subjected to postharvest ripening while a lower range (0.23 - 0.26%) was obtained for Var-10 tomatoes. Reducing sugar contents in Cherry-Nasmata (1.44 - 3.73 per 100 g) is lower compared to that in Var-10 (2.40 - 4.65 per 100 g). The sourness and sweetness indices (pH, titratable acidity and reducing sugar content) differ significantly (p<0.05) when the tomatoes were ripened under field and postharvest conditions. The maximum concentrations of lycopene (antioxidant index) of 9.42 and 6.68 μg/g were obtained at the Light-red and fully red stages of Cherry-Nasmata and Var-10 tomato cultivars respectively under field ripening condition. The pro-vitamin A index (beta-carotene) contents range between 0.86 and 4.09 μg/g in Cherry-Nasmata while a lower range (0.63 to 2.07 μg/g) was obtained for Var-10 tomatoes. The quantity of tomatoes to be consumed locally in order to meet the daily recommendation of 25.2 mg of lycopene in the diet is prescribed.
Bioactive Compounds and Antioxidant Activity of Tomato High Lycopene Content Advanced Breeding Lines
In Tunisia, tomato (Lycopersicon esculentum Mill.) is the main 'vegetable' grown and consumed all year round and is therefore of strategic importance. Tomato fruits are becoming then an important source of natural antioxidants primarily lycopene, phenolics and vitamin C, which are involved in inhibiting reactive oxygen species responsible for many cancer and cardiovascular diseases. Breeding for high nutritional tomato value is becoming an increasingly important aim. In this context, tomato high lycopene content advanced breeding lines (HLT-F51 and HLT-F52) were evaluated for their total carotenoid, lycopene, total phenolics, flavonoids, ascorbic acid, dehydroascorbic acid as well as their hydrophilic and lipophilic antioxidant activities, compared to the variety Rio Grande commonly grown in Tunisia. All tested high lycopene content varieties showed generally satisfying agronomic characteristics. The total carotenoid, lycopene, total phenolics, flavonoids, dehydroascorbic ac...
Horticulturae
Tomatoes are the most consumed vegetables worldwide and a valuable source of several antioxidants. The consumption of tomato products from appropriate cultivars after suitable processing methods may significantly improve human diet. The purpose of this study was investigating the variations in the contents of the main antioxidants present in tomato fruits, in the new Cuban breeds and yellow varieties, as well as their changes during the processing to tomato puree and ketchup. The quality evaluation comprised the detection of lycopene, ascorbic acid and total phenolics and the analysis of their contribution to antioxidant capacity in selected tomato genotypes. Heating (90–100 °C/15 min) enhanced the content of lycopene and total phenolics in puree, resulting in an increment in antioxidant capacity, despite the reduction in ascorbic acid as a result of concentration processes. The conducted experiments revealed that cultivars ‘Vyta’ and ‘Cima’ are very suitable for industrial purposes...
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Qualities of locally-bred tomatoes in developing countries are seemingly unraveled, despite the controversies surrounding adoption and use of genetically-modified crops. This work focused on the nutritional quality of fruits of two tomato cultivars monitored under two ripening conditions. Variations in total solid, pH, citric acid level, sugar, lycopene and beta-carotene contents were determined. Total solid contents ranged from 4.09% at turnings stage under postharvest to 7.30% in light-red stage of field ripening for Ajindi-Kerewa (AKC) and Beske (BC) cultivars respectively. Both cultivars had the lowest pH during field ripening and postharvest conditions with the highest titratable acidity of 0.30% (as citric acid) at breaker stage in AKC, and 0.32% at both fully red and light-red stage in BC. Sugar content was highest (4.64 g / 100 g) when pink in AKC and BC during field and postharvest conditions. Lycopene was highest in AKC and BC cultivars (13.11 and 17.18 µg/g respectively) ...