scholarly journals Production of High Soluble Solids Tomato Fruits on the Long-term Cultivation by Control of Nutrient Solution Supply Based on Solar Radiation in Hydroponics Using Substrate Made with Mixing Coconut Husk and Bark Compost

2006 ◽  
Vol 5 (1) ◽  
pp. 39-44 ◽  
Author(s):  
Takuya Hosokawa ◽  
Hideo Komatsu ◽  
Koji Maeda ◽  
Kazuhiro Nakamura ◽  
Tetsushi Yoshida ◽  
...  
Keyword(s):  
Solar Radiation ◽  
Nutrient Solution ◽  
Soluble Solids ◽  
Tomato Fruits ◽  
Coconut Husk

scholarly journals Effect of crop rotation and fertilization on quality of processing tomatoes

2013 ◽  
Vol 48 (2) ◽  
pp. 17-25 ◽  
Author(s):  
Krystyna Elkner ◽  
Jan Rumpel
Keyword(s):  
Organic Acids ◽  
Crop Rotation ◽  
Farmyard Manure ◽  
Soluble Solids ◽  
Mineral Fertilization ◽  
Tomato Fruits ◽  
New Yorker ◽  
Npk Fertilization

Effect of crop rotation and fertilization on quality of tomato cv. New Yorker was studied in field conditions in a long term, static experiment, conducted in Skierniewice since 1922. Tomatoes in crop rotation were cultivated on same field every third year. whereas these in monoculture were continuously cultivated on same field for 9 consecutive years (1980-1988). The fertilization treatments included: l) farmyard manure in rate of 40 t per hectare, annually, 2) mineral fertilization of 150 kg N. 100 kg P<sub>2</sub>O<sub>5</sub> and 200 kg K<sub>2</sub>O per hectare, 3) farmyard manure plus mineral fertilization as in treatments 1 and 2 and, 4) mineral fertilization as in treatment 2 plus microelements in form of a multimineral, commercial fertilizer (Polichelat LS 7). Crop rotation had no significant influence on the content of soluble solids, colour and weight of fruits. However, tomato fruits from plants cultivated in rotation, as compared to those from monoculture, contained more organic acids and pectins, less nitrates, had lower pH and greater firmness. The effect of fertilization was similar in rotated and non-rotated cultivation. At combined manure and mineral NPK fertilization, tomato fruits showed higher content of soluble solids, organic acids and pectins than these from the other fertilization treatments. Fruits of plants fertilized with farmyard manure only had higher content of vitamin C and lower one of nitrates, soluble solids and organic acids and also lower firmness as compared these from other fertilization in trial.

scholarly journals Influence of Potassium and Genotype on Vitamin E Content and Reducing Sugar of Tomato Fruits

HortScience ◽  
2008 ◽  
Vol 43 (7) ◽  
pp. 2048-2051 ◽  
Author(s):  
Sofia Caretto ◽  
Angelo Parente ◽  
Francesco Serio ◽  
Pietro Santamaria
Keyword(s):  
Vitamin E ◽  
Nutrient Solution ◽  
Titratable Acidity ◽  
Reducing Sugar ◽  
The Other ◽  
Soluble Solids ◽  
Total Tocopherol ◽  
Tomato Fruits ◽  
Tomato Plants ◽  
Important Quality

This research was conducted to determine the effect of potassium (K) and cultivar on important quality traits of tomato (Solanum lycopersicum L.), including reducing sugar, titratable acidity, and vitamin E content. Tomato plants were grown in a soilless system. Three K levels (low, middle, and high equal to 150, 300, and 450 mg·L−1 in the nutrient solution, respectively) and three cultivars (SVR, Kabiria, and Esperanza) were compared. Among cultivars, Kabiria, which is characterized by smaller fruits, showed 23% higher total soluble solids (TSS) than the average of the other cultivars. ‘Kabiria’ also showed a total tocopherol (vitamin E) content (18.5 mg·kg−1), markedly higher than SVR and Esperanza cultivars (12.2 and 10.3 mg·kg−1, respectively). Increased K levels in the nutrient solution resulted in increased contents of TSS, reducing sugar contents and titratable acidity in tomato fruits. Also, the vitamin E content of tomato fruits was significantly affected by differing K concentrations in the nutrient solution.

Study of the quality and antioxidant properties of tomatoes (Solanum lycopersicum L.) under different postharvest and dehydration conditions

2020 ◽  
Vol 13 (9) ◽  
Author(s):  
María Lorena Luna-Guevara ◽  
Teresita González-Sánchez ◽  
Adriana Delgado-Alvarado ◽  
María Elena Ramos-Cassellis ◽  
José Guillermo Pérez-Luna ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Rural Communities ◽  
Antioxidant Properties ◽  
Titratable Acidity ◽  
Physicochemical Characteristics ◽  
Soluble Solids ◽  
Convective Drying ◽  
Tomato Fruits ◽  
Solanum Lycopersicum L ◽  
Storage Temperatures

Objective: To study the effect of storage temperatures and dehydration conditions (solar and convective drying; SD, CD), on the quality, physicochemical parameters and antioxidant properties of tomato fruits. Methodology: The physicochemical characteristics pH, titratable acidity, soluble solids (°Bx) and color parameters (L*, a* and b*), were evaluated. The lycopene, carotenoids and antioxidant activity percentages retention of tomatoes fruits stored at 7 and 22 ° C for 5 days and subjected to SD (Temperature (T) of 67 °C and luminescence of 685 lum/sqf) and CD (T 70 °C, flow rates 0.5, 1.0 and 1.5 m/s), were analyzed. Results: The fruits reached humidities of 17 and 15% for SD and CD. The parameters pH, °Bx, L*, a*, b* were highest with 22°C and CD (1.5 m/s). The value of the carotenoids was higher in fruits stored at 7 ° C and subjected to CD (1.0 and 1.5 m/s) and SD with values of 83.85, 85.98 and 99.43%, respectively. The CD (0.5 m/s) and SD improved lycopene (94.37 and 95.14%) and the antioxidant activity with values of 73.06 and 97.21%. Implications: The application of solar dehydration depends on luminescence condition; however, it is inexpensive and environmentally friendly alternative. Conclusions: The results derived in a viable alternative for the conservation and commercialization of tomato fruits in rural communities

Assessment of locally produced waxing materials on the shelf life and fruit quality of two tomato varieties (Solanum lycopersicum)

2017 ◽  
Vol 4 (1) ◽  
pp. 36-47
Author(s):  
R. Osae G. Essilfie J. O. Anim
Keyword(s):  
Shelf Life ◽  
Tomato Fruit ◽  
Chemical Properties ◽  
Storage Period ◽  
Cassava Starch ◽  
Soluble Solids ◽  
Shea Butter ◽  
Tomato Fruits ◽  
Randomized Design ◽  
Colour Development

The study was conducted to assess the effect of different waxing materials on the quality attributes of tomato fruits. A 2 x8 factorial experiment layout in complete randomized design with 16 treatment combinations and 3 replication was adopted.The materials that were used for the experiment are two (2) varieties of tomatoes (Pectomech and Power Rano) and seven(7) waxing material (shea butter, cassava starch, beeswax, and a combination of shea butter + cassava starch, shea butter + beeswax, cassava starch + beeswax, shea butter + cassava starch + beeswax) and a control. Results from the experiment indicated that all waxing treatments delayed the development of weight loss, firmness, pH, total soluble solids, and total titrable acidity. The results also suggested that edible wax coatings delayed the ripening process and colour development of tomato fruits during the storage period and extended the shelf life. However Beewax treatment and its combinations performed better than the other treatments. It was therefore recommended that locally produced wax such as Beewax, Shea butter, Cassava Starch treatments and their combinations could be a good technology for preserving the quality and extending the shelf life of fresh tomato fruit as well as maintaining the physical and chemical properties.

NEW VARIETIES OF FRUIT AND BERRIES IN SELECTION OF ALL-RUSSIAN RESEARCH INSTITUTE FOR NATURAL FOOD PRODUCTION

1970 ◽  
pp. 33-37
Author(s):  
N. S. Levgerova ◽  
Е. S. Salina ◽  
I. А. Sidorova
Keyword(s):  
Food Production ◽  
Raw Materials ◽  
Soluble Solids ◽  
Natural Food ◽  
Black Currant ◽  
Central Russia ◽  
Long Term Study ◽  
Apple Cultivars ◽  
Processed Products

The results of the technological assessment of new apple, cherry, black currant, red currant and gooseberry cultivars of VNIISPK breeding for the suitability for the natural food production are given. As a result, the cultivars that are promising for cultivation in raw plantings have been selected. For the production of raw materials in the juice industry, apple cultivars with a high juice yield and content of soluble solids higher than 10.0% were selected: ‘Bolotovskoye’ (Vf), ‘Candil Orlovsky’ (Vf), ‘Osipovskoye’ (3x), ‘Rozhdestvenskoye’ ((Vf + 3x), ‘Zaryanka’ (Vm), ‘Priokskoye’ ((Vf + Co), etc. Based on the long-term study of cultivars for their suitability for compote, jam and jelly, the cultivars that are most suitable for these types of processing are identified. It has been found that taking into account the daily needs of vitamins C and P as the most important antioxidants, all processed products from black currant can serve as their sources, all processed products from cherries, as well as apple juice and gooseberry marmalade can serve as a source of P-active compounds. All columnar apple cultivars as well as ‘Bolotovskoye’, ‘Rozhdestvenskoye’, ‘Veteran’, ‘Imrus’, etc. show high suitability for the production of apple chips. Cherry cultivars ‘Rovesnitsa’, ‘Putinka’, ‘Podarok Uchitelyam’ and ‘Novella’ are suitable for dried fruit. Based on the long-term studies of the technological qualities of the VNIISPK gene pool, a new generation assortment has been formed that has an optimal combination of chemical and technological indicators of fruits that meet modern technological requirements and are suitable for cultivation in the raw plantations of Central Russia.

scholarly journals Higher Temperatures Decrease Fruit Size in Strawberry Growing in the Subtropics

Horticulturae ◽  
2021 ◽  
Vol 7 (2) ◽  
pp. 34
Author(s):  
Christopher Menzel
Keyword(s):  
Fruit Size ◽  
Negative Relationship ◽  
Titratable Acidity ◽  
Fruit Weight ◽  
Soluble Solids ◽  
Marketable Yield ◽  
Significant Relationships ◽  
Small Fruit ◽  
Solids Content

Five strawberry (Fragaria × ananassa Duch.) cultivars were grown in Queensland, Australia to determine whether higher temperatures affect production. Transplants were planted on 29 April and data collected on growth, marketable yield, fruit weight and the incidence of small fruit less than 12 g until 28 October. Additional data were collected on fruit soluble solids content (SSC) and titratable acidity (TA) from 16 September to 28 October. Minimum temperatures were 2 °C to 4 °C higher than the long-term averages from 1965 to 1990. Changes in marketable yield followed a dose-logistic pattern (p < 0.001, R2s = 0.99). There was a strong negative relationship between fruit weight (marketable) and the average daily mean temperature in the four or seven weeks before harvest from 29 July to 28 October (p < 0.001, R2s = 0.90). There were no significant relationships between SSC and TA, and temperatures in the eight days before harvest from 16 September to 28 October (p > 0.05). The plants continued to produce a marketable crop towards the end of the season, but the fruit were small and more expensive to harvest. Higher temperatures in the future are likely to affect the economics of strawberry production in subtropical locations.

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