Consulta: subjectFacets:"Controlled atmosphere"
Registros recuperados: 6
Data/hora: 09/06/2024 05:25:56

Evaluation of different oxygen, carbon dioxide and nitrogen combinations employed to extend the shelf life of fresh-cut collard greens
Provedor de dados: 75
Autores: Moretti,Celso L.; Araújo,Alessandra L.; Mattos,Leonora M.
Collard greens (Brassica oleracea var. acephala) "Manteiga" were harvested in commercial fields in Brasilia, Brazil, aiming to evaluate different oxygen, carbon dioxide and nitrogen combinations to extend the shelf life of the fresh-cut product. After harvest, leaves were taken to the postharvest laboratory, selected for external blemishes and minimally processed (3 mm thick) inside a cold room (13±2°C). After processing, fresh-cut collard greens were stored under two controlled atmosphere (CA) conditions (3% O2, 4% CO2; 5% O2, 5% CO2/balance N2), and normal air (control), at 5°C (95±2% RH), for six days. Daily, minimally processed collard greens were evaluated for total vitamin C, total chlorophyll, total soluble solids content, and titratable acidity....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brassica oleracea var; Acephala; Brix; Chlorophyll; Controlled atmosphere; Quality; Postharvest; Vitamin C.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362003000400021

'Royal Gala' apple quality stored under ultralow oxygen concentration and low temperature conditions
Provedor de dados: 86
Autores: Weber,Anderson; Brackmann,Auri; Anese,Rogério de Olivera; Both,Vanderlei; Pavanello,Elizandra Pivotto.
The objective of this work was to evaluate the interaction of ultralow oxygen concentrations (ULO) with storage temperatures and carbon dioxide partial pressures and its influence on fruit quality preservation and on the occurrence of physiological disorders in 'Royal Gala' apples. The experiment was carried out in a completely randomized design, with four replicates 25-fruit. ULO conditions (1.0 kPa O2 + 2.0 kPa CO2; 0.8 kPa O2 + 1.5 kPa CO2; 0.8 kPa O2 + 1.0 kPa CO2; 0.6 kPa O2 + 1.5 kPa CO2; and 0.6 kPa O2 + 1.0 kPa CO2) were tested at 0, 0.5 and 1.0°C, in a 5x3 factorial arrangement. Fruit quality and ripening analyses were performed after eight-month storage plus seven days of shelf-life at 20°C. Oxygen partial pressures below 0.8 kPa increased the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Malus domestica; Carbon dioxide; Controlled atmosphere; Decay; Physiological disorders.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2011001200003

Storage potential of ‘SCS426 Venice’ apples under different storage technologies
Provedor de dados: 94
Autores: Martin,Mariuccia Schlichting de; Betinelli,Karyne Souza; Argenta,Luiz Carlos; Steffens,Cristiano André; Amarante,Cassandro Vidal Talamini do; Kvitschal,Marcus Vinícius.
Abstract  This study aimed to evaluate the storage potential of SCS426 Venice apples under different storage technologies. Fruits were harvested in an experimental orchard located in Fraiburgo, SC and stored for up to eight and ten months in 2013 and 2014, respectively. Apples were treated or not with methylcyclopropene (1-MCP) and stored under air atmosphere (AA, 0.5±0.5 °C/RH 85±5%) or controlled atmosphere (CA; 1.5 kPa of O2 and 1.5 kPa of CO2 at 0.7±0.5 °C/RH of 93±3%). Fruits were evaluated every two months of storage, after one and seven days of shelf life (23 ± 0.3 °C/RH 93±3%). The storage period of ‘SCS426 Venice’ apples under AA without 1-MCP application should not extend beyond six months. Under this storage condition, fruits had higher...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Malus domestica Borkh; Controlled atmosphere; 1-Methylcyclopropene; Flesh Firmness; Postharvest.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452018000200304

Postharvest quality of ‘Brookfield’ apple field-treated with naphthalene acetic acid alone or combined with other growth regulators
Provedor de dados: 53
Autores: Wendt,Lucas Mallmann; Brackmann,Auri; Both,Vanderlei; Thewes,Fabio Rodrigo; Schultz,Erani Eliseu; Ludwig,Vagner; Berghetti,Magno Roberto Pasquetti.
ABSTRACT The Gala cultivars represent about 65% of the Brazilian apple production, however, it has a short harvest period, making necessary to use technologies that anticipate or delay fruit maturation. A widely used technology is the preharvest application of growth regulators. The objective of this investigation was to evaluate the effect of preharvest application of naphthalene acetic acid (NAA) combined with aminoethoxyvinylglycine (AVG) and 2-chloroethylphosphonic acid (Ethephon), on the quality of ‘Brookfield’ apple at harvest and after eight months controlledatmosphere (CA)(1.2 kPa O2 and 2.0 kPa CO2) storage followed by seven days of shelf life at 20 °C. The treatments were: [1] Control: application of water only; [2] NAA (40 g.ha-1); [3] NAA (40...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aminoethoxyvinylglycine; Controlled atmosphere; Ethephon; Fruit quality; Malus domestica.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052020000100155

Chlorophyll stability in yerba maté leaves in controlled atmospheres
Provedor de dados: 52
Autores: Morawicki,Rubén O.; Schmalko,Miguel E.; Känzig,Rodolfo G.
The objective of this research was to investigate the stability of chlorophyll in yerba maté leaves in controlled atmospheres of CO2/air mixtures and different water activities at 25°C.Two levels of water activity were selected corresponding to saturated salt solutions of LiCl (a w=0.113) and MgCl2(a w=0.330) and three levels of CO2/air mixtures (0/100,20/80 and 40/60). The chlorophyll content was evaluated using a liquid chromatography HPLC technique. Experimental values varied between 2.16 and 0.61 mg/g of dry matter. For each sample, 5 determination were made during 58 days. Experimental values were fitted to an equation describing a first order reaction. In all cases, the agreement was good with P&lt;3 10-3. The initial concentration of chlorophyll...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Yerba maté; Chlorophyll stability; Controlled atmosphere.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89131999000100012

Cuticle of 'Gala' and 'Galaxy' apples cultivars under different environmental conditions
Provedor de dados: 52
Autores: Tessmer,Magda Andréia; Antoniolli,Lucimara Rogéria; Appezzato-da-Glória,Beatriz.
This study aimed to analyze the cuticle thickness and pattern of epicuticular wax deposition in 'Gala' and 'Galaxy' apple cultivars (Malus domestica Borkh,) from three Brazilian producing areas: Vacaria (RS), Fraiburgo (SC) and São Joaquim (SC) with altitudes of 971, 1,048 and 1,353m, respectively. Harvested fruit were kept under two storage conditions: regular atmosphere (RA) (0 ºC and 90% RH) and controlled atmosphere (CA) (1.5% O2, 2.5% CO2, 0ºC and 90% RH). Cuticle thickness measurements were made using LM and the deposition pattern of epicuticular wax observed with a SEM. Altitude among the apple producing areas was not a factor in deposition pattern of waxes between the cultivars but at higher altitudes, the cuticle was thicker in both the cultivars....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Malus domestica Borkh; Altitude; Cold storage; Controlled atmosphere; Light microscope.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132012000500010