scholarly journals Analysis of Antioxidant Compounds and Hydroxymethylfurfural in Processing Tomato Cultivars

2006 ◽  
Vol 16 (4) ◽  
pp. 615-619 ◽  
Author(s):  
Lajos Helyes ◽  
Zoltán Pék ◽  
Sára Brandt ◽  
Andrea Lugasi
Keyword(s):  
Tomato Fruit ◽  
Total Antioxidant Status ◽  
Weather Conditions ◽  
Antioxidant Compounds ◽  
Total Polyphenols ◽  
Processing Tomato ◽  
Significant Difference ◽  
Total Antioxidant ◽  
Lycopene Content ◽  
Tomato Cultivars

Tomato (Lycopersicon esculentum) fruit is an important source of antioxidants, which are important in the prevention of many cancer types and cardiovascular diseases. In ripe tomato fruit, one of the most significant antioxidant compounds is lycopene. In this study, effects of the cultivars and the environmental conditions on the lycopene content were investigated. Temperature effect was characterized by calculating growing degree-day (GDD). Relationships among lycopene, total polyphenols, organic acid, and total antioxidant status (TAS) were analyzed. A variation of more than 30% was found among the lycopene levels of five processing tomato cultivars. Lycopene content ranged from 79.7 to 155.0 mg·kg–1 fresh weight. There was a significant difference between the lycopene concentrations of fruit harvested at two different dates. The values were higher at the second harvest, probably due to the cooler weather conditions preceding that harvest. Total polyphenols correlated strongly with TAS but the other antioxidants did not have any relationship to TAS. GDD were strongly and positively correlated with hydroxymethylfurfural content in fresh tomatoes.

scholarly journals The effect of water supply for yield formation of processing tomato

2012 ◽  
pp. 165-168
Author(s):  
Lajos Helyes ◽  
Zoltán Pék
Keyword(s):  
Water Supply ◽  
Yield Loss ◽  
Weather Conditions ◽  
Total Polyphenols ◽  
Processing Tomato ◽  
Temperature And Precipitation ◽  
Tomato Yield ◽  
Significant Difference ◽  
Yield Formation ◽  
Optimum Water

The effect of irrigation on tomato yield depends on the actual weather conditions, basically the air temperature and precipitation (quantity and dispersion). The irrigated plants gave a significantly higher yield, and rainfed plants showed a yield loss. The optimum water supply treatment gave a significantly higher proportion of lycopene than the control (rainfed) treatment (89% and 80% respectively) in case of Brixsol F1 variety. In spite of this we have not found significant difference in case of Strombolino F1 (cherry type). Content of total poly-phenols measured in Strombolino F1 (cherry type) was significantly higher than that found in the Brixol F1 (normal type). The optimum water supply treatment resulted in a significantly lower content of total polyphenols in both years. Tomato fruits are rich in polyphenols the largest amount of which is rutin from among the identified components.

scholarly journals Comparative Study of the Antioxidants Compounds in Fresh and Thermally Processed Tomatoes Juice

2019 ◽  
Vol 76 (1) ◽  
pp. 63
Author(s):  
Sanda ANDREI ◽  
Andrea BUNEA ◽  
Daria Antonia DUMITRAŞ ◽  
Adela PINTEA
Keyword(s):  
Ascorbic Acid ◽  
Thermal Processing ◽  
Tomato Juice ◽  
Antioxidant Compounds ◽  
Ascorbic Acid Concentration ◽  
Total Polyphenols ◽  
Total Carotenoids ◽  
Time Processing ◽  
Thermally Processed ◽  
Lycopene Content

The purpose of our study was to determine the influences of thermal processing of tomato juice, in a manner similar to that commonly used in traditional cuisine, on the concentration of antioxidant compounds: total carotenoid and their profile; concentration of lycopene; concentration of ascorbic acid and total polyphenols. The boiling of tomato juice resulted in a significant increase in the concentration of total carotenoids and lycopene. No statistically significant differences in total carotenoids and lycopene content occurred depending on the boiling time. In fresh juice, ascorbic acid had average values of 20.73 mg /100g and significant decreased depending on the boiling time. Processing of tomato juice by boiling for 15 minutes or 30 minutes causes a slight increase in the concentration of phenols. The results obtained in this study have shown that, in the case of tomato juice, cooking by boiling determines the decrease of ascorbic acid concentration, but on the other hand makes the carotenoids and phenolic compounds more available, thus being nutritionally beneficial.

scholarly journals Evaluating Performance of Cherry and Slicer Tomato Cultivars in Greenhouse and Open Field Conditions: Yield and Fruit Quality

HortScience ◽  
2021 ◽  
pp. 1-8
Author(s):  
Hardeep Singh ◽  
Bruce Dunn ◽  
Niels Maness ◽  
Lynn Brandenberger ◽  
Lynda Carrier ◽  
...  
Keyword(s):  
Open Field ◽  
Block Design ◽  
Tomato Fruit ◽  
Fruit Size ◽  
Field Conditions ◽  
Cherry Tomato ◽  
Production Type ◽  
Lycopene Content ◽  
Tomato Cultivars ◽  
Field Production

Tomato (Solanum lycopersicum L.) is one of the most extensively cultivated horticultural crops in the world. Factors such as yield, size, taste, and lycopene content are important criteria that may impact the selection of tomato cultivars for different production systems. The aim of the current study was to evaluate different slicer and cherry tomato cultivars for production under greenhouse and open field conditions. Three cultivars of slicer (BHN 964, Trust, and Geronimo) and cherry (BHN 268, Favorita, and Sakura) tomatoes were tested using randomized complete block design in 2019 and 2020. Results showed that the performance of tested cultivars differed under greenhouse verses open field conditions. Among cherry tomato cultivars in 2020, BHN 268 and Sakura produced significantly greater yield under open field conditions, while under greenhouse conditions yield of BHN 268 was the lowest. Similarly, cherry tomato fruit size from ‘BHN 268’ and ‘Sakura’ was also significantly greater than ‘Favorita’ under field conditions, whereas under greenhouse conditions, the fruit size of ‘Sakura’ was significantly greater than both ‘BHN 268’ and ‘Favorita’. Among slicer tomato cultivars, BHN 964 produced significantly greater yield and had a greater average fruit size than the other two cultivars under greenhouse conditions in 2020 while, Geronimo produced significantly similar or larger yield and had a similar average fruit size compared with BHN 964 under open field conditions. Tomatoes produced under open field conditions were rated significantly greater for taste compared with those produced under greenhouse conditions. Lycopene content in both slicer and cherry tomato cultivars was influenced by the interaction of production type, cultivars, and harvest time. Therefore, it can be concluded that BHN 964 and Geronimo were the highest in lycopene among slicer tomato cultivars for greenhouse and open field production, respectively. Among cherry tomato cultivars, BHN 268 was the highest in lycopene for open field production and Sakura for greenhouse production. Additionally, open field–produced tomatoes taste better than greenhouse-produced tomatoes, but lycopene content may be constrained for mid- and late-season fruits due to high temperature conditions under open field conditions.

scholarly journals Effects of organic and inorganic fertilization on yield and quality of processing tomato (Lycopersicon esculentum Mill.)

2018 ◽  
Vol 30 (2) ◽  
pp. 321-332 ◽  
Author(s):  
Dimitrios Bilalis ◽  
Magdalini Krokida ◽  
Ioannis Roussis ◽  
Panayiota Papastylianou ◽  
Ilias Travlos ◽  
...  
Keyword(s):  
Block Design ◽  
Organic Fertilizer ◽  
Titratable Acidity ◽  
Fruit Weight ◽  
Soluble Solids ◽  
Total Soluble Solids ◽  
Processing Tomato ◽  
Significant Difference ◽  
Lycopene Content ◽  
Organically Grown

Abstract The demand for organically grown products is increasing because many people are concerned about the environment and believe that organic products are healthier than conventional ones. Some studies have shown that organically produced tomato fruits contain higher levels of antioxidants, polyphenols and carotenoids than those produced conventionally. The objective of this study was to evaluate the influence of organic and inorganic fertilization on agronomic and quality characteristics of the processing tomato. The 2-year experiment was laid out in a randomized complete block design, with three replications and three fertilization treatments (untreated, compost and inorganic fertilizer). The results showed that the highest fruit number per plant (98.5), average fruit weight (63.6 g) and fruit yield (168.0 t ha−1) were obtained under inorganic fertilization. The highest total soluble solids (4.39 °Brix) and total soluble solids to titratable acidity ratio (17.4), L* (43.4) and a* (35.4) values, as well as the highest lycopene content (88.5 mg kg−1 f.w). were achieved through the application of organic fertilizer. Significantly higher total soluble solids and total soluble solids to titratable acidity ratio in organically grown tomatoes are particularly important to the processing tomato industry. Finally, the highest lycopene content produced under organic fertilization as well as the non-significant difference between the organic and conventional tomatoes in terms of lycopene yield make organic processing tomatoes suitable for lycopene production.

The effect of antioxidant supplementation on superoxide dismutase activity, Cu and Zn levels, and total antioxidant status in erythrocytes of patients with Graves' disease

2005 ◽  
Vol 43 (4) ◽  
Author(s):  
Vesna Bacic-Vrca ◽  
Franjo Skreb ◽  
Ivana Cepelak ◽  
Ljiljana Mayer ◽  
Zvonko Kusic ◽  
...  
Keyword(s):  
Superoxide Dismutase ◽  
Antioxidant Status ◽  
Therapy Group ◽  
Total Antioxidant Status ◽  
Superoxide Dismutase Activity ◽  
Graves Disease ◽  
Antioxidant Supplementation ◽  
Study Results ◽  
Significant Difference ◽  
Total Antioxidant

AbstractThe effects of supplementation with a fixed combination of antioxidants (vitamins C and E, β-carotene and selenium) on superoxide dismutase activity, copper and zinc concentrations, and total antioxidant status were monitored in erythrocytes derived from a group of patients with Graves' disease treated with methimazole, with respect to the rate of achieving euthyroidism. Thyroid-stimulating hormone (TSH), thyroid hormones and the above-mentioned parameters were measured before therapy, and on days 30 and 60 after therapy initiation. The patients receiving antioxidant supplementation along with methimazole therapy (group A, n=27) achieved euthyroidism at a faster rate than those treated with methimazole alone (group B, n=28). The activity of superoxide dismutase decreased significantly in both patient groups during the treatment; however, there was no significant difference between the groups. There was no significant change in the erythrocyte concentration of copper, whereas the zinc concentration and total antioxidant status showed significant between-group differences. The study results clearly show that antioxidant supplementation in the treatment of Graves' disease is justified, while zinc and total antioxidant status in erythrocytes seem to be sensitive indicators of the efficacy of supplemental therapy.

EVALUATION OF THE LYCOPENE CONTENT IN PROCESSING TOMATO CULTIVARS CLAIMING "HIGH PIGMENT CONTENT"

2003 ◽  
pp. 331-331
Author(s):  
L. Sandei ◽  
P. Siviero ◽  
G. Zanotti ◽  
A. Cabassi ◽  
C. Leoni
Keyword(s):  
Pigment Content ◽  
Processing Tomato ◽  
Lycopene Content ◽  
Tomato Cultivars

A comprehensive study of oxidative stress in patients with somatic symptom disorder

2018 ◽  
Vol 31 (2) ◽  
pp. 100-105
Author(s):  
Esra Kabadayi Sahin ◽  
Ali Caykoylu ◽  
Almila Senat ◽  
Ozcan Erel
Keyword(s):  
Oxidative Stress ◽  
Somatic Symptom ◽  
Total Antioxidant Status ◽  
Stress Index ◽  
Control Group ◽  
Somatic Symptom Disorder ◽  
Oxidative Balance ◽  
Significant Difference ◽  
Patient Health ◽  
Total Antioxidant

AbstractObjectiveTo investigate oxidative stress parameters [total oxidant status (TOS), total antioxidant status (TAS), oxidative stress index (OSI), paraoxonase (PON), arylesterase (ARE) and thiol-disulphide homeostasis] in patients who were diagnosed as having somatic symptom disorder in accordance with Diagnostic and Statistical Manual of Mental Disorders-5.MethodsThe study included 41 medication-free patients with somatic symptom disorder and 47 age, sex, and sociodemographic-matched healthy individuals. The patients were administered the Patient Health Questionnaire-15, Somatic Symptom Amplification Scale, Beck Depression Inventory, and Beck Anxiety Inventory. TOS, TAS, OSI, PON, ARE thiol, disulphide levels, and routine biochemical parameters were compared between the two groups.ResultsTOS, OSI, disulphide levels, disulphide/native thiol, and disulphide/total thiol ratios were found significantly higher in the patient group compared with the control group (p < 0.001). There was no significant difference in PON, ARE, and TAS parameters between the two groups (p > 0.05).ConclusionThis study showed that the level of oxidants increased and oxidative balance was impaired in somatic symptom disorder. Oxidative stress may play a role in the aetiopathogenesis of this disorder. This is the first study to report an association between oxidative stress and somatic symptom disorder.

scholarly journals Evaluation of Processing Tomato Pomace after Composting on Soil Properties, Yield, and Quality of Processing Tomato in Greece

Agronomy ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 88
Author(s):  
Ioanna Kakabouki ◽  
Antigolena Folina ◽  
Aspasia Efthimiadou ◽  
Stella Karydogianni ◽  
Charikleia Zisi ◽  
...  
Keyword(s):  
Soil Properties ◽  
Farmyard Manure ◽  
Organic Fertilizers ◽  
Soluble Solids ◽  
Tomato Pomace ◽  
Processing Tomato ◽  
Solanum Lycopersicum L ◽  
Yield And Quality ◽  
Significant Difference ◽  
Lycopene Content

While processing tomato cultivation (Solanum lycopersicum L.) is considered one of the most important industrial crops in Greece, a waste known as tomato pomace is growing significantly high. Notably, the tomato pomace presents enormous opportunities for the creations of organic fertilizers. The aim of this study was to investigate the use of tomato pomace as a fertilizer in the same crop. A field experiment was established at the Agricultural University of Athens during 2018 and 2019 in a randomized complete design with five treatments (control, inorganic NPK (NPK), Tomato pomace and Biocycle Humus Soil (Tp and BHS), Tomato pomace and Farmyard manure (Tp and FYM), and Tomato pomace and Compost (Tp and CM). Physical soil properties such as soil porosity and penetration resistance were improved by the application of organic blends. Additionally, soil nitrogen content ranged from 0.10% (control and NPK) to 0.13% (Tp and FYM). A significant increase of yield was noticed under organic fertilization where the highest yield of 8.00 tn ha−1 was recorded in Tp and BHS (2018). Lycopene content was significantly affected by fertilization and its highest values were 87.25 (Tp and BHS; 2018), and 88.82 mg kg−1 fresh (Tp and FYM; 2019). Regarding fruit firmness, the three organic blends did not have statistically significant difference. In addition, the Total Soluble Solids (TSS) was significantly affected by the fertilization and the maximum value was 4.80 ◦Brix (Tp and CM; 2018). In brief, tomato pomace blended with organic fertilizers was yielded considerable since it improved soil quality and increased yield.

scholarly journals Antioxidant Activity and Element Content of Suillus collinitus

2021 ◽  
Vol 9 (2) ◽  
pp. 352-355
Author(s):  
Celal Bal
Keyword(s):  
Oxidative Stress ◽  
Total Antioxidant Status ◽  
Absorption Spectrometry ◽  
Stress Index ◽  
Antioxidant Compounds ◽  
Oxidative Stress Index ◽  
Cu Content ◽  
Biological Potential ◽  
Total Antioxidant ◽  
Element Contents

Mushrooms used as food have medicinal importance due to their antioxidant compounds. In this context, it is very important to determine the biological potential of fungi and to reveal these medicinal properties. In this study, it was aimed to determine the element contents, total antioxidant status, total oxidant status, oxidative stress index of Suillus collinitus (Fr.) Kuntze mushroom. In this context, the mushroom samples were extracted with ethanol in the Soxhlet extractor. Element contents were determined using atomic absorption spectrometry. Total antioxidant (TAS) and total oxidant (TOS) levels and oxidative stress index (OSI) were determined using Rel Assay commercial kits. As a result of the study, it was determined that the TAS value of S. collinitus was 2.467 ± 0.145 mmol/L, TOS value was 17.845 ± 0.273 µmol/L and OSI value was 0.677 ± 0.030. In addition, the Fe content (350.72 ± 10.23), Cu content (68.11 ± 2.51), Pb content (11.58 ± 2.43), Zn content (10.46 ± 1.28) and Ni content (1.47 ± 0.21 mg.kg-1) of S. collinitus measured. As a result, S. collinitus mushroom is thought to be a natural source of antioxidants. It has also been observed that the element contents are at normal levels.

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