scholarly journals Interaction of irrigation rates and fertilization doses on postharvest quality of papaya ‘Formosa ’

2021 ◽  
pp. 918-924
Author(s):  
Lígia Borges Marinho ◽  
Fernanda Nery Vargens ◽  
Acácio Figueiredo Neto ◽  
Vanessa Rodrigues da Silva ◽  
Aureliano Roberto Rodrigues Ramos ◽  
...  
Keyword(s):  
Titratable Acidity ◽  
Water Saving ◽  
Soluble Solids ◽  
Postharvest Quality ◽  
Lower Amount ◽  
Semiarid Region ◽  
Water Restriction ◽  
Net Productivity ◽  
Randomized Design ◽  
Fruit Productivity

Water deficit is a water-saving strategy that might nevertheless negatively affect fruit quality. In the present study, the papaya quality was evaluated after application of different irrigation rates and nitrogen fertilization doses at harvest and postharvest. The study was conducted on ‘Formosa’ cultivar in semiarid region. The experiment was performed in a completely randomized design in a 2 x 5 x 3 scheme; two storage times (0 and 5 days), five irrigation rates (50, 75, 100, 125, and 150% of crop evapotranspiration), and three nitrogen doses (150, 180, and 210 Kg.ha-1), with four replicates. Total Soluble Solids (TSS), Titratable Acidity (TA), and fruit skin colour (Luminosity - L, intensity of green/red coloration - a*, and intensity of yellow coloration - b*) were evaluated. Reduced irrigation rates and lower nitrogen doses resulted in increased soluble solids and SS/TA ratio. The latter was increased during storage. Irrigation deficit and a lower amount of nitrogen (150 Kg. ha-1) did not reduce papaya quality, even after 5 days of storage in an environment with controlled temperature and humidity. In order to ensure net productivity in rural properties, this water-saving strategy of maintaining the crop under water restriction conditions must take into consideration not only in the curves of papaya quality-related variables, but also fruit productivity curve

scholarly journals Postharvest Quality of Tommy Atkins Mangoes Coated With Cassava Starch and Chitosan-Based Coatings

2018 ◽  
Vol 10 (11) ◽  
pp. 401
Author(s):  
T. A. Oliveira ◽  
C. A. Paiva ◽  
A. C. Silva ◽  
L. V. Nascimento ◽  
R. H. L. Leite ◽  
...  
Keyword(s):  
Weight Loss ◽  
Reducing Sugars ◽  
Soluble Sugars ◽  
Titratable Acidity ◽  
Cassava Starch ◽  
Soluble Solids ◽  
Postharvest Quality ◽  
Total Soluble Sugars ◽  
Randomized Design

This study aimed to evaluate postharvest quality of Tommy Atkins mangoes treated with starch cassava and chitosan based coatings. Mango fruits were collected at physiological maturity. After cleaning, weighing and identification, fruits were submitted to the respective treatments and stored for 35 days in the Laboratório de Tecnologia de Alimentos, with weekly evaluations under refrigeration 13±1 ºC and 90±5% RH. The experiment was conducted in a completely randomized design, in factorial scheme with four treatments: control, cassava starch (CS), chitosan (CH), and cassava starch/chitosan (CS/CH) at a concentration of 2%, and six storage periods (0, 7, 14, 21, 28 and 35 days) with four replications. Fruits were evaluated in: appearance, weight loss, external color: luminosity and ΔE, pulp firmness, titratable acidity, soluble solids content, starch, total soluble sugars, reducing sugars and sucrose. Data were submitted to analysis of variance using SISVAR software and compared by Scott-Knott test at 5% of probability. It was observed a reduction in appearance, pulp firmness, titratable acidity, starch and reducing sugars and increase in weight loss, luminosity, ΔE, soluble solids, total soluble sugars and non-reducing sugars during storage. CS/CH coated fruits reported higher notes of appearance, lower weight loss and maintained color. Quality of physicochemical attributes: soluble solids, starch, total soluble sugars, reducing sugars and non-reducing sugars were strongly retarded.

scholarly journals Postharvest quality of ‘Roxo de Valinhos’ fig fruits grown in semi-arid conditions

2017 ◽  
Vol 8 (1) ◽  
pp. 93
Author(s):  
Francisco Sidene Oliveira Silva ◽  
Eduardo Castro Pereira ◽  
Vander Mendonça ◽  
Francisco Mickael De Medeiros Câmara ◽  
Gustavo Alves Pereira ◽  
...  
Keyword(s):  
Titratable Acidity ◽  
Soluble Solids ◽  
Postharvest Quality ◽  
Semiarid Region ◽  
Chemical Characteristics ◽  
Arid Conditions ◽  
Soluble Solid ◽  
Physiology Laboratory ◽  
Semi Arid

Aiming to evaluate the postharvest quality of ‘Roxo de Valinhos’ fig fruits grown in semi-arid conditions, this experiment was carried out in November, 2014, where fig fruit variety ‘Roxo de Valinhos’ were harvested from plants located at the didactic orchard of the Federal Rural University of Semi-Arid (UFERSA), Mossoró-RN, Brazil. Fruits were randomly harvested from 30 fig plants, spaced 2 m x 1.5 m, with 2 years old, according to three the fruit development stages (50%, 75% and 100% mature). The fruits were analyzed in Postharvest Physiology Laboratory, where the physical and chemical characteristics were evaluated, using 10 fruits for each stage. The evaluated characteristics were: weight, length, diameter, firmness, soluble solids, pH, titratable acidity and vitamin C. For the physical characteristics, fruits 100% mature presented the best results for weight, length and diameter, except for firmness which in fruits 50% mature presented the best results. For the chemical characteristics, only the soluble solid variable was signiicant and fruits 100% mature showed the best result, in this way, the fig tree ‘Roxo de Valinhos’ achieved the postharvest fruit quality and is viable for the semiarid region of the Rio Grande Norte State.

scholarly journals Postharvest Quality of Beetroots Grown Under Different Irrigation Depths and Ascorbic Acid Doses

2019 ◽  
Vol 11 (16) ◽  
pp. 180
Author(s):  
Anderson Carlos de Melo Gonçalves ◽  
Toshik Iarley da Silva ◽  
José Sebastião de Melo Filho ◽  
Joana Gomes de Moura ◽  
Leonardo Vieira de Sousa ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Ascorbic Acid ◽  
Polynomial Regression ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Postharvest Quality ◽  
Mineral Matter ◽  
Total Soluble Solids ◽  
Randomized Design

Beetroot (Beta vulgaris L.) is a culture of great demand in Brazil due to its high nutritional value. However, water availability is a determining factor on its production. An alternative to reduce the damage caused by water stress is to apply organic solutes, such as ascorbic acid. The purpose hereof was to evaluate the postharvest quality of beetroots grown under different irrigation depths and ascorbic acid doses. The experiment was carried out in the Human, Social, and Agricultural Center’s Postharvest Physiology and Technology Laboratory of the Federal University of Paraíba, Bananeiras, Paraíba, Brazil, in a completely randomized design with five doses of ascorbic acid (0.00, 0.29, 1.00, 1.71, and 2.00 mM) and five irrigation depths (40.0%, 51.6%, 80.0%, 108.4%, and 120.0% of the evapotranspiration), combined according to each Box Central Compound experimental matrix, totaling nine treatments with five repetitions. The variables total soluble solids, electrical conductivity, hydrogenation potential, titratable acidity, total soluble solids and titratable acidity ratio, moisture, dry matter, and mineral matter were evaluated. The data were submitted for analysis of variance and polynomial regression. There was a significant interaction between the irrigation depths and the ascorbic acid doses in every variable, except for electrical conductivity and mineral matter. The postharvest characteristics of beetroots improved with applications of ascorbic acid doses in the thinner irrigation depths. The greatest dose of ascorbic acid (2 mM) in the thinner irrigation depth (40%) increases the postharvest quality of beet tuberous roots.

scholarly journals Can silicon (Si) influence growth, physiology and postharvest quality of lettuce?

2020 ◽  
pp. 71-77
Author(s):  
Hozano de Souza Lemos Neto ◽  
Marcelo de Almeida Guimarães ◽  
Italo Marlone Gomes Sampaio ◽  
Janiquelle da Silva Rabelo ◽  
Caris dos Santos Viana ◽  
...  
Keyword(s):  
Essential Element ◽  
Titratable Acidity ◽  
Dry Mass ◽  
Fresh Mass ◽  
Soluble Solids ◽  
Postharvest Quality ◽  
Hydroponic System ◽  
Growth Physiology ◽  
Pests And Diseases ◽  
Randomized Design

Although it is not considered an essential element for plants, silicon (Si) provides benefits for several species, especially grasses, such as increase in yield and resistance to pests and diseases, reducing the effects of salt and water stress, among others. The aim of this study was to evaluate the effect of silicon on the performance of lettuce in hydroponic system. The experiment was carried out in a completely randomized design, with five doses of silicon (0, 2, 4, 6, 8 mM) in the nutrient solution. Shoot fresh and dry mass, gas exchanges, photosynthetic pigments and post-harvest were evaluated. It was observed that from the dose of 2 mM, there was a reduction in most variables. The dose of 0.4 mM [(-0.572)/(2*-0.7055)] provided a greater increase in shoot fresh mass. The highest photosynthetic rate was at the dose of 3.19 mM. Soluble solids, titratable acidity and pH were higher at the 4 mM dose. Silicon provides better lettuce production, with a dose of 0.4 mM allowing a greater shoot fresh mass, being the most indicated for lettuce cultivation in hydroponic system.

scholarly journals Physicochemical and enzimatic transformations of "eva" apples stored under modified atmosphere

2014 ◽  
Vol 38 (4) ◽  
pp. 375-381
Author(s):  
Ariela Betsy Thomas ◽  
Caroline Roberta Freitas Pires ◽  
Luiz Carlos de Oliveira Lima
Keyword(s):  
Titratable Acidity ◽  
Soluble Solids ◽  
Low Density Polyethylene ◽  
Postharvest Quality ◽  
Experimental Unit ◽  
Modified Atmosphere ◽  
Low Density ◽  
Randomized Design ◽  
The City

The need for a permanent market supply of fresh fruit has generated great interest in postharvest techniques that can promote useful life and quality of the fruit. The aim of this study was to evaluate the efficiency of atmospheric modification using different polymeric films in maintaining postharvest quality and prolonging the shelf life of Eva (Mallus sp) apples. For this, fruits from the city of Barbacena - MG, selected and sanitized were packed in plastic trays and wrapped in the corresponding films. The films used were: polypropylene - 20 µm, low-density polyethylene - 14 µm and high-density polyethylene - 7 µm. Another group of fruits (control) was not submitted to a modified atmosphere. Subsequently, all the the packages were stored under refrigeration (0 ° C ± 0.5) for 210 days and the evaluations of the following variables were performed every 30 days of storage: hydrogen potential (pH), titratable acidity, soluble solids, weight loss, firmness, total pectin, soluble pectin, pectin methyl esterase and polygalacturonase. The work was conducted in a completely randomized design (4x8), with 4 treatments and 8 experimental times. Each treatment consisted of three replicates and each experimental unit consisted of six fruits. The results were submitted to variance analysis and means were compared by the Tukey test at 5% probability and regression analysis. The low density polyethylene (14 µm) packaging provided the best conservation of the Eva cultivar apple textural characteristics.

scholarly journals Potassium and growth-promoting fungi improve the postharvest quality of grape tomato

2022 ◽  
Vol 43 (2) ◽  
pp. 675-692
Author(s):  
Deise Silva Castro Pimentel Cardoso Cardoso ◽  
◽  
Herminia Emilia Prieto Martinez ◽  
Ariana Mota Pereira ◽  
Maria Catarina Megumi Kasuya ◽  
...  
Keyword(s):  
Vitamin C ◽  
Titratable Acidity ◽  
Fruit Production ◽  
Soluble Solids ◽  
Postharvest Quality ◽  
Tomato Plants ◽  
Randomized Design ◽  
Growth Promoting ◽  
Low K

Tomato plants respond well to potassium fertilization, whose insufficiency leads to a drop in fruit production and quality. On the other hand, the association of growth-promoting fungi (GPF) with roots has been shown to be able to optimize nutrient absorption, which implies lower financial costs and a decreased risk of loss of K applied to the soil. The objective of this study was to investigate the effects of inoculation with GPF and K rates on the postharvest quality of grape tomato hybrid ‘Mascot’ grown in a hydroponic system. The plants were cultivated in a hydroponic drip system using washed and sterilized sand as substrate. They were trained with two stems, leaving three bunches per stem. The experiment was carried out in a splitsplit-plot arrangement in a completely randomized design with three replicates. Ripe fruits were stored for 30 days in PET containers in storage chambers at a temperature of 25 °C. After 0, 10, 20 and 30 days of storage, five fruits were collected to determine the titratable acidity (TA) and soluble solids (SS), reducing sugars (RS) and vitamin C contents. The K rates provided an increase in the quality attributes. At low K rates, inoculation with GPF led to higher TA, SS, RS and vitamin C values. Inoculation of the plants with GPF improved the postharvest preservation of the fruits, especially when the plants underwent nutritional stress during cultivation.

scholarly journals Postharvest quality of tomato as affected by nitrogen and sulfur interaction

2020 ◽  
Vol 69 (2) ◽  
pp. 130-135
Author(s):  
Matias Siueia Júnior ◽  
Maria Ligia de Souza Silva ◽  
Anderson Ricardo Trevizam ◽  
Valdemar Faquin ◽  
Deivisson Ferreira da Silva
Keyword(s):  
Vitamin C ◽  
Fruit Quality ◽  
Tomato Fruit ◽  
Beta Carotene ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Postharvest Quality ◽  
Solanum Lycopersicum L ◽  
Randomized Design

Nitrogen (N) and sulfur (S) are nutrients that, in addition to influencing plant growth and production, interfere with processes related to postharvest fruit quality. In the present study, N x S interaction was evaluated in the postharvest quality of tomato (Solanum lycopersicum L.). The experiment was conducted in a greenhouse using 5 dm3 capacity vessels containing a 0-20 cm layer of a dystropherric Red Latosol. A 5 x 3 factorial design was used, with combinations of five doses of N (0, 100, 200, 300 and 400 mg dm-3) and three doses of S (0, 60 and 120 mg dm-3) distributed in a completely randomized design, with four repetitions. After harvest, the attributes of fruit quality were evaluated: firmness, pH, soluble solids (SS), titratable acidity (AT), soluble solids ratio and titratable acidity (SS / AT), vitamin C, lycopene and beta-carotene. An increase in firmness was observed, as well as the content of soluble solids, titratable acidity and the SS / AT ratio of the fruits as a result of the interaction N x S. However, this interaction favoured the reduction of the contents of vitamin C, lycopene and beta-carotene, and the quality characteristics of tomato fruit in relation to the recommended values. Only the increasing doses of N favoured a higher pH in the tomato fruits.

Effect of Preharvest Application of Silicon and Saline Water on Postharvest Quality of Beet (Beta vulgaris L.)

2019 ◽  
pp. 1-9
Author(s):  
José Sebastião de Melo Filho ◽  
Toshik Iarley da Silva ◽  
Ygor Henrique Leal ◽  
Ana Gabriela Sousa Basilio ◽  
Mário Leno Martins Véras ◽  
...  
Keyword(s):  
Irrigation Water ◽  
Saline Water ◽  
Titratable Acidity ◽  
Dry Mass ◽  
Soluble Solids ◽  
Postharvest Quality ◽  
Total Soluble Solids ◽  
Randomized Design ◽  
Saline Waters

Beet is one of the vegetables richest in nutrient (bioactive compounds, folic acid and potassium). However, there are few studies on postharvest quality from the crop under irrigation conditions with saline waters, and because of that, the objective of this study was to evaluate effect of saline waters and silicon application in the preharvest on physicochemical quality of the beet. Two experiments were conducted with the objective of evaluating two forms of silicon application: via foliar (experiment 1) and via soil (experiment 2) about its influence in mitigating salt stress. In both experiments was adopted a randomized design with blocks in a 5 x 5 factorial, referring to five levels of electrical conductivity of the irrigation water (ECw): (0.5, 1.3, 3.25, 5.2 and 6.0 dS m-1) five doses of silicon (0.00; 2.64; 9.08; 15.52 and 18.16 mL L-1), they were combined according to the experimental matrix Central composite of Box totaling 10 treatments, with four replicates and three plants per plot. After harvesting, 70 days after transplanting, the following characteristics were evaluated: bulb dry mass, pH, titratable acidity (TA), total soluble solids (TSS), TSS/TA ratio and ash.  There was a significant effect for the salinity x silicon (Si) interaction applied via soil to the dry matter mass and titratable acidity. The electrical conductivities of irrigation water (ECw) and Si doses via leaf and soil influenced significantly for analyzed variables, except pH, total soluble solids, TSS/TA ratio, ash and titratable acidity, which were not influenced by ECw and nor by the doses of Si via soil and foliage. Irrigation with water of 6.0 dS m-1 promotes better quality beet tuber. The fertilization on preharvest with silicon via soil or foliage improved postharvest quality of beet.

scholarly journals Postharvest quality of fig fruits using different edible coatings

2020 ◽  
Vol 13 (1) ◽  
pp. 24
Author(s):  
A. F. J. Pinto ◽  
K. C. Santos ◽  
L. P. Santos ◽  
L. G. B. Lubenow ◽  
W. B. G. Coutinho ◽  
...  
Keyword(s):  
Titratable Acidity ◽  
The Other ◽  
Soluble Solids ◽  
Postharvest Quality ◽  
Control Treatment ◽  
Edible Coatings ◽  
Randomized Design ◽  
Sensory Parameters ◽  
Manova Analysis ◽  
Over Time

The Fig (Ficus carica L.) is a fruit produced worldwide for in in natura consumption and processing. The aim of this work was to evaluate the effect of edible coatings on the post-harvest qualities of fig fruit. The experiment was conducted at the Instituto Federal Goiano – Urutaí Campus, using figs from a orchard in the municipality of Silvania-GO. The fruits, after washing and sanitization, received edible coatings (polysaccharide, protein and lipid), constituting the treatments together with the control treatment (without cover). The fruits were stored for six days at a temperature of 25 ± 2 º C, in a completely randomized design with 5 replications. Sensory parameters (appearance, aroma and flavor) and physicochemical (weight loss, titratable acidity, soluble solids, ratio, pH and diameter) were analyzed at 0, 3 and 6 days of storage. The data obtained were submitted to MANOVA analysis and the treatments were compared using ellipses of 95% of confidence. The fig fruits, of all treatments, showed no variation of soluble solids over time (10 º Brix), and did not present aroma and alcoholic flavor. For the other variables analyzed there were variations, highlighting the lipid coatings, which maintained better fruit qualities over time, differentiating from the other treatments. The polysaccharide and proteic coatings presented identical behavior, this, intermediate to the lipid coatings and to the control treatment. In the conditions that the study was carried out, there was a rapid loss of fruit quality and, among the covers, the lipid minimized these losses.

Sample size for postharvest quality traits of ‘Palmer’ mangoes

2021 ◽  
Vol 43 (5) ◽  
Author(s):  
João Claudio Vilvert ◽  
Sérgio Tonetto de Freitas ◽  
Maria Aparecida Rodrigues Ferreira ◽  
Eleonora Barbosa Santiago da Costa ◽  
Edna Maria Mendes Aroucha
Keyword(s):  
Sample Size ◽  
Estimation Error ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Postharvest Quality ◽  
Maturity Stage ◽  
Transverse Diameter ◽  
Quality Traits ◽  
Growing Seasons ◽  
The Mean

Abstract The objective of this study was to determine the most efficient sample size required to estimate the mean of postharvest quality traits of ‘Palmer’ mangoes harvested in two growing seasons. A total of 50 mangoes were harvested at maturity stage 2, in winter (June 2020) and spring (October 2020), and evaluated for weight, length, ventral and transverse diameter, skin and pulp L*, C* and hº, dry matter, firmness, soluble solids (SS), titratable acidity (TA) and the SS/TA ratio. According to the results, the coefficient of variation (CV) of fruit quality traits ranged from 2.1% to 18.1%. The highest CV in both harvests was observed for the SS/TA ratio, while the lowest was reported for pulp hº. In order to estimate the mean of physicochemical traits of ‘Palmer’ mangoes, 12 fruits are needed in the winter and 14 in the spring, considering an estimation error of 10% and a confidence interval of 95%. TA and the SS/TA ratio required the highest sample size, while L* and hº required the lowest sample size. In conclusion, the variability was different among physicochemical traits and seasons, implying that different sample sizes are required to estimate the mean of different quality traits in different growing seasons.

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