Effects of Vaporous Naphthoxyacetic Acid on Development of Tomato Fruits, with Special Reference to Their Vitamin C Content

1942 ◽  
Vol 104 (2) ◽  
pp. 362-365 ◽  
Author(s):  
John W. Mitchell ◽  
Muriel R. Whitehead
Keyword(s):  
Vitamin C ◽  
Special Reference ◽  
Tomato Fruits

Post harvest behavior of tomato as influenced by nitrogen and potassium levels

2019 ◽  
Vol 4 (02) ◽  
pp. 140-147
Author(s):  
S. Paudel ◽  
P. Pantha
Keyword(s):  
Weight Loss ◽  
Lycopersicon Esculentum ◽  
Vitamin C ◽  
Shelf Life ◽  
Block Design ◽  
Ambient Condition ◽  
Tomato Fruits ◽  
Color Development ◽  
Randomized Complete Block Design ◽  
Four Levels

Tomato (Lycopersicon esculentum) is highly perishable and has potential for processing industries in bumper producing seasons in Nepal. The study on judicious use of nitrogen and potassium levels was aimed to explore the quality attributes along with the shelf life of tomato fruits. Three levels of nitrogen comprising 0 kg/ha (N0), 100 kg/ha (N100), 200 kg/ha (N200) and four levels of potassium 0 K2O kg/ha (K0), 80 K2O kg/ha (K80), 160 K2O kg/ha (K160), 240 K2O kg /ha (K240) were used as treatments in randomized complete block design with three replications at Chitwan (Inner Terai) Nepal. Tomatoes at breaker stage were harvested from the field and 10 fruits from each treatment per replication were kept for physiological weight loss, color rating and shelf life in ambient condition (17.5±3 0C and 80.5±6.5 % RH). Fruit quality with respect to physicochemical properties like firmness, TSS, TA, pH and Vitamin C was assessed at the end of shelf life. Higher potassium levels hasten color development and increased TSS, firmness and vitamin C content. Physiological weight loss was greatly reduced and extended shelf life was achieved with 100 kg N/ha and 240 kg K2O/ha.

scholarly journals Valuation of α-Fe2O3@C20H38O11 NC Nano-cellulose Surface Coating on Ascorbic Acid Content of Solanum Lycopersicum Under Storage Conditions

2021 ◽  
Author(s):  
Geetika Guleria ◽  
Dhananjay K. Sharma ◽  
Shweta Thakur ◽  
Poonam Kumari ◽  
Mamta Shandilya ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Ascorbic Acid ◽  
Klebsiella Pneumoniae ◽  
Vitamin C ◽  
Room Temperature ◽  
Tomato Fruit ◽  
Coating Material ◽  
Tomato Fruits ◽  
Nano Coating ◽  
Nano Cellulose

Abstract Competence of synthesized α-Fe2O3@C20H38O11 NC nano-cellulose antimicrobial coating material and its real-time application to extend storage life of Tomato (Solanum lycopersicum) variety Solan Lalima (India) was studied. Fe2O3 NPs (nanoparticles) were synthesized using a hydrothermal method, and α-Fe2O3@C20H38O11 NC nanocomposite was developed and characterized using XRay Diffractions (XRD) and Scanning Electron Microscopy (SEM) techniques. α-Fe2O3@C20H38O11 NC nanocomposite, and CE (cellulose) were analysed for their antimicrobial activity against Klebsiella pneumoniae and Staphylococcus aureus bacteria. NC exhibit 11mm, 13mm zone of inhibition against Klebsiella pneumoniae and Staphylococcus aureus respectively. Tomato fruit samples coated with (5%) UC1A, UC2A, and (3%) UC1B, UC2B two different concentrations of α-Fe2O3@C20H38O11 NC nanocomposite and uncoated sample UC1, UC2 stored at room temperature (25±2 ºC) and refrigerator temperature (4 oC) respectively for ascorbic acid (vitamin C) analysis on days 0, 4, 8, 12 and 16. Our study revealed that a 3% concentration of α-Fe2O3@C20H38O11 NC nanocomposite material quite potent in maintaining quality aspects of the tomato fruit by no decline of vitamin C under refrigerator conditions up to 16th day. FTIR analysis of all samples was done to determine the functional groups present in tomato samples after storage. AAS (Atomic Absorption Spectrometer) was used to analyse the content of Fe, and Zn elements in tomato samples. This work revealed that the 3% α-Fe2O3@C20H38O11 NC nano-cellulose antimicrobial nano-coating had maintained the quality of the coated tomato fruits and retards microbial growth during storage time and helpful in increasing the shelf life of tomato under cold storage as well as at room temperature. Coating material had not any significant effect on micronutrients element concentrations in both temperature studies. Synthesised α-Fe2O3@C20H38O11 NC antimicrobial nano-coating material can be used effectively for long storage of tomato fruits and safe for dietary intake of human.

scholarly journals INFLUENCE OF FERTILIZERFORMS AND RATES ON TOMATO FRUIT QUALITY INDICES

2021 ◽  
pp. 31-40
Author(s):  
A.V. Pastukhova ◽  
◽  
A.F. Petrov ◽  
N.V. Gavrilets ◽  
◽  
...  
Keyword(s):  
Vitamin C ◽  
Tomato Fruit ◽  
Sugar Content ◽  
Total Sugar ◽  
Biologically Active ◽  
Nitrogen Fertilizers ◽  
Nitrate Content ◽  
Total Acidity ◽  
Tomato Fruits ◽  
Solids Content

This paper discussesthe results findings on the effect of nitrogen fertilizers as urea-ammonia liquor (KAS-32) and ammonium nitrate of various application rates (40,80 and 120 kg of primary nutrient per ha) on the quality of tomato fruits grown on the field and under cover.Various research methods were tested. They made it possible to identify biologically active substances of tomato fruits which helped to examine fruit chemical composition of experimental vari-eties with the determination of dry solids, total sugar, vita-minC, total acidity, lycopene and nitrates. It was found that under cover, the application of nitrogen-containing fertiliz-ers increased dry solids by an average of 23-25%, total sugar -by 55-61%, vitamin C -by 33-41% as compared to the control. On the field, the dry solids content increased by 35-45%, total sugar -by 74-83% and vitamin C -by 37-42%. However, the application of the maximum rates of N120fertilizer decreased dry solids content by 5-6% as compared to N80. At the same time, there was an increase of fruit total acidity as compared to the control: up to 32% under cover, and up to 16% on the field. Although as sugar content increased, the acidity had almost no effect on the eating qualities. In all variants, the nitrate content did not exceed themaximum permissible concentration. The ob-tained data confirmed the positive effect of certain rates of nitrogen-containing fertilizers on the structure, quality and safety of the obtained tomatoes. This result will make it possible to recommend the testedmethods and rates of fertilization during the growing season.

scholarly journals Effect of Zinc and Boron Application on Lycopene and Nutritional Qualities of Tomato

2021 ◽  
pp. 27-36
Author(s):  
Supti Mallick ◽  
R. C. Das ◽  
H. M. Zakir ◽  
M. S. Alam
Keyword(s):  
Vitamin C ◽  
Total Acidity ◽  
Tomato Fruits ◽  
Nutrient Contents ◽  
Combined Application ◽  
Randomized Design ◽  
Study Results ◽  
Nutritional Qualities ◽  
Four Levels ◽  
Major Nutrients

A pot experiment was conducted in the net house of the Department of Agricultural Chemistry, Bangladesh Agricultural University, Mymensingh, to examine the effect of different levels of Zn and B on the major biochemical and nutritional quality of tomato fruits. The experiment was laid out in a completely randomized design (CRD) with 4 replications along with two treatment factors viz., (i) four levels of Zn- like control, Zn @ 4.0 kg ha-1, Zn @ 6.0 kg ha-1 and Zn @ 8.0 kg ha-1; and (ii) three levels of B- like control, B @ 2.0 kg ha-1 and B @ 3.0 kg ha-1. Among the biochemical parameters- lycopene, total acidity, and vitamin C contents in tomato fruits ranged from 3.24-3.76 mg 100 g-1, 0.26-0.36%, and 21.76-26.40 mg 100 g-1 samples, respectively. The study results revealed that the highest amounts of lycopene and vitamin C were recorded from B @ 2.0 kg ha-1. Combined Zn and B applications showed a highly significant effect on total acidity, lycopene, and vitamin C contents of tomato fruits. Similarly, the application of Zn and B alone or in combination significantly affected the major nutrient contents of tomato fruits. The highest amounts of Ca, Mg, Na, K, and P were obtained from the application of Zn @ 4.0 kg ha-1, while the maximum amounts of Fe and Zn were recorded from Zn @ 8.0 kg ha-1 treatment. However, the application of B alone significantly reduced the contents of Ca, P, S, Fe, and Zn in tomato fruits while the contents of Mg, K, and Na remained almost unchanged. Finally, the study results concluded that the combined application of Zn and B (@ 4.0 and 2.0 kg ha-1, respectively) had a significant effect on major nutrients and biochemical characters of tomato fruits.

scholarly journals Increasing of selenium content and qualitative parameters in tomato (Lycopersicon esculentum Mill.) after its foliar application

10.5219/1097 ◽  
2019 ◽  
Vol 13 (1) ◽  
pp. 351-358 ◽  
Author(s):  
Alena Andrejiová ◽  
Alžbeta Hegedűsová ◽  
Samuel Adamec ◽  
Ondrej Hegedűs ◽  
Ivana Mezeyová
Keyword(s):  
Vitamin C ◽  
Foliar Application ◽  
Botanical Garden ◽  
Sodium Selenate ◽  
Selenium Content ◽  
Total Carotenoids ◽  
Total Polyphenol ◽  
Tomato Fruits ◽  
Negative Effect ◽  
Positive Effect

The effect of genotype and selenium foliar biofortification in the form of an aqueous solution of sodium selenate on the content of total carotenoids, vitamin C, total polyphenols and selenium content in the tomato fruits was studied.  Field experiment was held in the Botanical garden of the Slovak University of Agriculture in 2016. Seven determinant varieties of tomato in the two variants were observed. The results of experiments show that treatment of plants with the dose of Se concentration (150 g Se.ha-1) at the flowering stage significantly increased the total Se content in the in tomato fruits. Foliar application of selenium had a positive effect on the increase of total polyphenol. The influence of Se biofortification on the content of vitamin C and carotenoids was not detected. Selenium foliar fertilization in dosage 150 g.ha-1 is suitable way of tomato fruits enriching in polyphenols, without negative effect on other antioxidants content.

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