scholarly journals Qualitative performance of lettuce cultivars in four seasons in Mossoró, Rio Grande do Norte State, Brazil

Revista CERES ◽  
2016 ◽  
Vol 63 (6) ◽  
pp. 843-852 ◽  
Author(s):  
Otaciana Maria dos Prazeres da Silva ◽  
Maria Zuleide de Negreiros ◽  
Elizangela Cabral dos Santos ◽  
Welder de Araújo Rangel Lopes ◽  
Rafaella Rayane Macedo de Lucena ◽  
...  
Keyword(s):  
Soluble Sugars ◽  
Rio Grande ◽  
Titratable Acidity ◽  
Leafy Vegetables ◽  
Soluble Solids ◽  
Green Leaf ◽  
Semiarid Region ◽  
Total Soluble Sugars ◽  
Four Seasons

ABSTRACT The major challenge in producing good quality lettuce in the semiarid region is the climatic factors such as high temperature, high luminosity and low air relative humidity, which affect the quality characteristics of leafy vegetables. Thus, the objective of this study was to evaluate the quality of lettuce cultivars of Crisphead (Angelina, Amelia and Taina), Mimosa (Mila, Mimosa and Lavinia), Green-leaf (Scarlet, Vera, Isabella and Vanda) and Loose-leaf (Elisa and Regiane) in four seasons: summer (12/21/2012), autumn (3/21/2013), winter (06/21/2013) and spring (09/23/2013) in the conditions of Mossoró, Rio Grande do Norte state. The experimental design was a complete randomized block with four replications. The following characteristics were quantified: pH, titratable acidity, soluble solids (SS) and total soluble sugars. The quality of the lettuce was influenced by the cultivar and environmental conditions. Lower titratable acidity was recorded for Green-leaf and Loose-leaf groups in the summer and for Crisphead groups in the autumn. The highest content of soluble solids were achieved in autumn for cultivars Vera, Vanda, Isabela, Elisa and Regiane; to Lavinia, Angelina, Amelia and Tainá, and summer and autumn stood out from the other growing seasons for this trait. Cultivars Scarlet, Angelina and Amelia had higher levels of total soluble sugars in the summer; Mila and Lavinia in spring; Elisa and Regiane in winter and Tainá in spring.

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 GARLIC QUALITY AS A FUNCTION OF SEED CLOVE HEALTH AND SIZE AND SPACING BETWEEN PLANTS

2019 ◽  
Vol 32 (4) ◽  
pp. 966-975 ◽  
Author(s):  
MAYKY FRANCLEY PEREIRA DE LIMA ◽  
WELDER DE ARAÚJO RANGEL LOPES ◽  
MARIA ZULEIDE DE NEGREIROS ◽  
LEILSON COSTA GRANGEIRO ◽  
HIAGO COSTA DE SOUSA ◽  
...  
Keyword(s):  
Cultural Practices ◽  
Soluble Sugars ◽  
Titratable Acidity ◽  
Economic Importance ◽  
Soluble Solids ◽  
Postharvest Quality ◽  
Total Soluble Sugars ◽  
Food Industries ◽  
Seed Health

ABSTRACT Garlic has a worldwide economic importance; this vegetable can be consumed fresh or processed by food industries. However, few studies evaluate its postharvest quality. It is necessary to establish cultural practices and methods that focus not only on increase of yield, but on obtaining a product with better postharvest quality. The objective of this work was to evaluate the bulb quality of conventional garlic and virus-free garlic as a function of seed clove size and space between plants. Two experiments were conducted simultaneously in Portalegre, Rio Grande do Norte, Brazil. A randomized block experimental design with four replications was used in both experiments. The treatments were arranged in split-plots, with the seed clove size (large and small) in the plots, and the plant spacings (7.5, 10.0, 12.5, and 15.0 cm between plants) in the subplots. The use of large seed cloves resulted in higher bulb diameter and titratable acidity (TA). Soluble solids (SS), total soluble sugars, SS to TA ratio, and total solids decreased as the space between plants was increased, regardless of the seed health and seed clove size. Virus-free garlic seed cloves planted with spacing of 12.5 and 15.0 cm resulted in higher bulb diameter, TA, pungency, and industrial index, i.e., they produced better quality bulbs with good prospects for industrialization.

Post Harvest Quality of Acid Lime Fruits 'Tahiti' Grafted on Genotype (TSKCx (LCR x TR) – 017), under Saline Stress

2019 ◽  
pp. 1-10
Author(s):  
Sabrina Vieira de Sousa ◽  
Franciscleudo Bezerra da Costa ◽  
Luderlândio De Andrade Silva ◽  
Marcos Eric Barbosa Brito ◽  
Ana Marinho do Nascimento ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Experimental Design ◽  
Soluble Sugars ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Saline Stress ◽  
Total Soluble Sugars ◽  
Post Harvest ◽  
Acid Lime

Objective: The objective of this study was to verify the post-harvest quality of fruits of the acid lime fruits ‘Tahiti’ of the genotype TSKC x (LCR x TR) – 017, under saline stress. Experimental Design: The experimental design was completely randomized from the factorial arrangement (2x5), where factor 1 corresponded to irrigation water salinity levels (0.3 and 3.0 dSm-1) and factor 2, storage time (0.5, 10, 15 and 20 days). Location and Duration of the Study: The experiment was conducted at the Center of Science and Technology Agrifood of the Federal University of Campina Grande, Pombal Campus, Paraíba, from February 2016 to February 2017. Methodology: The effect of the treatments was analyzed from the following evaluations: loss of fresh weight (%),soluble solids(%),titratable acidity (%),soluble solids and titratable acidity, hydrogen potential, concentration of H + ions (μM), electrical conductivity (dSm-1),ascorbic acid (mg 100 mL-1), total soluble sugars (mg 100 mL-1),phenolic compounds(mg 100 mL-1) and flavonoids (mg 100 mL-1). Results: It was observed the interaction between the saline concentration and the time of storage, on the physical-chemical and chemical characteristics in the acid file 'Tahiti'. Conclusion: The salinity of 3.0 dSm-1 showed the highest values for soluble solids, SS/AT ratios, total soluble sugars, phenolic compounds, and flavonoids during storage, indicating that the quality of these fruits was better when compared to fruits of the acidic 'Tahiti' file with 0.3 dSm-1 of salinity.

scholarly journals QUALITATIVE ANALYSIS OF VERNALIZATED SEMI-NOBLE GARLIC CULTIVARS IN WESTERN RIO GRANDE DO NORTE STATE, BRAZIL

2016 ◽  
Vol 29 (3) ◽  
pp. 764-773 ◽  
Author(s):  
RAFAELLA RAYANE MACEDO DE LUCENA ◽  
MARIA ZULEIDE DE NEGREIROS ◽  
PATRÍCIA LÍGIA DANTAS DE MORAIS ◽  
WELDER DE ARAÚJO RANGEL LOPES ◽  
ALINNE MENEZES SOARES
Keyword(s):  
Soluble Sugars ◽  
Rio Grande ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
High Yield ◽  
Social Relevance ◽  
Total Soluble Sugars ◽  
Yield And Quality ◽  
Favorable Conditions ◽  
Plot Design

ABSTRACT Garlic is a vegetable that has economic and social relevance in Brazil. Rio Grande do Norte is among the consumer states, however, despite having regions with favorable conditions for growing garlic, it depends on imports of this product to meet its demand. The introduction of cultivars that have high yield and quality, and the adjustments in vernalization technology, which is a key issue for adaptation of new cultivars, are mechanisms that can contribute to garlic revitalization in areas previously producing this vegetable. Therefore, the objective of this work was to assess the quality characteristics of semi-noble garlic cultivars subjected to different bulb-seed pre-planting vernalization periods in two counties of the Western Mesoregion of Rio Grande do Norte State (RN), Brazil. Two experiments were simultaneously conducted in Barauna RN and Governador Dix-sept Rosado RN, from April to November, 2012. A complete randomized block experimental design was used with four replications. The treatments were arranged in split-plot design, with the plots consisted of cultivars (Gigante-do-Nucleo and BRS-Hozan) and subplots consisted of bulb-seed pre- planting vernalization (4±1°C) periods (0, 10, 20 and 30 days). The evaluations consisted of bulb diameter, pH, titratable acidity, soluble solids, total soluble sugars, reducing sugars, pungency, total solids and industrial index. The use of 10-day bulb-seed pre-planting vernalization increased the semi-noble garlic quality produced in Barauna and Governador Dix-sept Rosado. The cultivars Gigante-do-Nucleo and BRS-Hozan presented good prospects for industrialization, with good characteristics of flavor and aroma.

scholarly journals QUALITY OF TABLE CASSAVA ROOTS FERTILIZED WITH PHOSPHORUS1

2021 ◽  
Vol 34 (4) ◽  
pp. 965-975
Author(s):  
FLÁVIO PEREIRA DA MOTA SILVEIRA ◽  
WELDER DE ARAÚJO RANGEL LOPES ◽  
PEDRO RAMON HOLANDA DE OLIVEIRA ◽  
FERNANDA LARISSE DOS SANTOS LIMA ◽  
LINDOMAR MARIA DA SILVEIRA ◽  
...  
Keyword(s):  
Starch Content ◽  
Abiotic Factors ◽  
Soluble Sugars ◽  
Titratable Acidity ◽  
Quality Parameters ◽  
Cooking Time ◽  
Soluble Solids ◽  
Total Soluble Sugars ◽  
Brazilian Semiarid

ABSTRACT The quality parameters of cassava roots vary between cultivars and depend on abiotic factors, such as plant nutrition. However, the magnitude of how these factors interfere is not yet well defined, especially for phosphorus (P), which is a nutrient directly linked to the synthesis of sugars and starches in plants. Thus, the objective of the research was to evaluate the quality of roots of table cassava cultivars fertilized with doses of P in the Brazilian semiarid. The research was carried out at the Rafael Fernandes experimental farm, Mossoró, RN, Brazil, from June 2018 to April 2019. The experimental design used was in randomized blocks, arranged in subdivided plots and with four replications. Doses of P (0, 60, 120, 180 and 240 kg ha-1 of P2O5) were applied in the plots, and in the subplots, the table cassava cultivars (Água Morna, BRS Gema de Ovo, Recife and Venâncio). Firmness, elasticity, titratable acidity, soluble solids, total soluble sugars, starch and cooking were all evaluated. The quality of table cassava roots varied depending on the cultivar and the dose of P. Doses of P between 120 and 240 kg ha-1 of P2O5 increase the starch content and reduce the cooking time of table cassava roots.

scholarly journals Yield and quality of strawberry cultivars

2010 ◽  
Vol 28 (2) ◽  
pp. 222-226 ◽  
Author(s):  
Luis Eduardo C Antunes ◽  
Nara Cristina Ristow ◽  
Ana Cristina R Krolow ◽  
Sílvia Carpenedo ◽  
Carlos Reisser Júnior
Keyword(s):  
Statistical Design ◽  
Rio Grande ◽  
Titratable Acidity ◽  
Fruit Weight ◽  
Climatic Conditions ◽  
Soluble Solids ◽  
Experimental Unit ◽  
Rio Grande Do Sul ◽  
Yield And Quality

The strawberry cultivation is an important economic activity in the Rio Grande do Sul State, Brazil, however the number of offered cultivars to the growers is reduced. The yield and quality of strawberry (Fragaria x ananassa Duch.) cultivars Camarosa, Galexia, Earlibrite, Festival, Plarionfre and Sabrosa was evaluated under the climatic conditions of Pelotas, Rio Grande do Sul State. We determined the number, mass, total soluble solids (TSS ºBrix), total titratable acidity (TTA), antocianin level and fresh fruits produced in an experimental unit. We also determined the production of fruits per hectare and per plant. The statistical design used in the experiment was of completely randomized blocks with 6 treatments (cultivars) and 4 replicates where the experimental unit was composed of 8 plants. The harvest began in the first half of August, extending to the second half of December, totalling 20 weeks. Plarionfre, Earlibrite and Festival cultivars showed higher production from the first half of October until the end of the first half of November. Camarosa reached higher productivity, mass of plants and fruit weight. There were no differences between the evaluated cultivars in the levels of TSS, antocianin, ATT and pH during the period of evaluation.

scholarly journals Pre-Harvest Application of Plant Biostimulant on the Quality and Shelf-Life of Yellow Melon (Cucumis melo L.)

2018 ◽  
Vol 10 (2) ◽  
pp. 252 ◽  
Author(s):  
Edna M. M. Aroucha ◽  
Cleiniane M. G. de Sousa ◽  
José Francismar Medeiros ◽  
Glêidson B. de Góes ◽  
Iarajane B. do Nascimento ◽  
...  
Keyword(s):  
Shelf Life ◽  
Soluble Sugars ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Internal Cavity ◽  
Total Soluble Sugars ◽  
Cold Chamber ◽  
Cucumis Melo L ◽  
Quality And Shelf Life ◽  
Plot Design

The purpose this work was to evaluate the influence of pre-harvest application of plant biostimulant on the quality and shelf-life of melon. For this an experiment was established in the “Coopyfrutas”, located in Rio Grande do Norte state/Brazil. The treatments consisted of a combination of factors: melon cultivars (‘Goldex’ and ‘Iracema’) and pre-harvest application of plant biostimulant, Crop Set®, (with and without). At commercial maturity, some fruit of each treatment were sampled and analyzed and the others were stored in a cold chamber at 10±2 ºC and 80±2% relative humidity. The experiment was arranged in a completely randomized split-plot design. The plots consisted of cultivars and Crop Set® application and subplots of different storage time (0, 14, 21, 28, and 35 days after harvest) with eight replications. The characteristics evaluated were length, diameter, internal cavity, external and internal appearance, weight loss, fresh firmness, soluble solids, titratable acidity, pH, SS/TA ratio, and total soluble sugars. Applications of plant biostimulant led to an increase in fruit length and diameter. It reduced fresh firmness and increased the pH of ‘Goldex’ fruit. The total soluble sugars reduced at 35 days of storage in the ‘Iracema’ fruit treated with plant biostimulant.

scholarly journals Quality of papaya hybrid grown under different irrigation depths

2013 ◽  
Vol 33 (4) ◽  
pp. 865-875 ◽  
Author(s):  
Mônica S. da Silva ◽  
Alberto S. de Melo ◽  
Juarez P. Pedroza ◽  
Josivanda P. Gomes ◽  
Sebastião de Oliveira M. Júnior
Keyword(s):  
Titratable Acidity ◽  
Fruit Production ◽  
Soluble Solids ◽  
Semiarid Region ◽  
Replacement Rate ◽  
Productive Potential ◽  
Irrigation Depth ◽  
Brazilian Northeast ◽  
Longitudinal Diameter

Irrigation is a practice widely used in fruit production in the Brazilian Northeast region, including in the papaya crop in order to increase their productivity. For the purpose of knowing the productive potential of papaya hybrid irrigated, an experiment was carried out in order to evaluate the performance of a papaya hybrid under different irrigations depths. Four irrigation depths (50, 75, 100 and 125% of ETo) were tested and the reference evapotranspiration was calculated by the Penman-Monteith model. The hybrid papaya used was UENF/Caliman 01, which was planted in single rows, spaced 4 x 2m from each other, and irrigated by dripping. The experimental design in randomized blocks was used with six replications and three plants per plot. The following variables were evaluated: transversal diameter, longitudinal diameter, pulp thickness, external and internal appearances, soluble solids, titratable acidity, pulp pH and soluble solids/titratable acidity relation. The higher transversal and longitudinal diameters of the fruit were obtained applying an irrigation depth of about 108% of evapotranspiration. The UENF/Caliman 01 hybrid can be cultivated in the semiarid region of the State of Paraiba, Brazil, with replacement rate of 100% ETo, without compromising the quality of the fruits.

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 POST-HARVEST QUALITY OF PEQUI (Caryocar brasiliense CAMB.) COLLECTED FROM THE PLANT OR AFTER NATURALLY FALLING OFF AND SUBJECTED TO SLOW AND QUICK FREEZING

2017 ◽  
Vol 39 (1) ◽  
Author(s):  
MARIA NEUDES SOUSA OLIVEIRA ◽  
PAULO SÉRGIO MASCIMENTO LOPES ◽  
MARIA OLÍVIA MERCADANTE-SIMÕES ◽  
EDUARDO GUSMÃO PEREIRA ◽  
LEONARDO MONTEIRO RIBEIRO
Keyword(s):  
Reducing Sugars ◽  
Soluble Sugars ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Ripening Stages ◽  
Quick Freezing ◽  
Total Reducing Sugars ◽  
Caryocar Brasiliense ◽  
Freezing Liquid

ABSTRACT Soluble solids (SS), titratable acidity (TA), SS/TA ratio, pH, moisture, soluble sugars (SSU), total reducing sugars (RSU), and non-reducing sugars (NRS) were assessed in the pulp of pequi fruits collected at three ripening stages: from the plant, from the ground after naturally falling off, and collected from the ground three days after naturally falling off. The evaluation was performed after six months of freezer storage both for fruits subjected to quick freezing (liquid nitrogen followed by freezer) and slow freezing (straight into the freezer). The variables assessed were not influenced by the freezing method. The SS, TA, and RSU contents increased with the ripening stage, suggesting that the fruits collected from the plant are still immature and have lower quality than those collected after naturally falling off. Although considered mature when they fall off, fruits consumed three days after naturally falling off have better quality.

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