High levels of antioxidant enzymes correlate with delayed senescence in nonnetted muskmelon fruits

Lacan, Dominique; Baccou, J. C.

doi:10.1007/s004250050269

Cited by 184 publications

(124 citation statements)

References 28 publications

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“…These results are in accordance with previous studies on S. lycopersicum (Cervilla et al, 2007), Malus domestica rootstocks (Molassiotis et al, 2006), and Vitis vinifera (Gunes et al, 2006). Moreover, the increase in LOX activity due to salt stress and B toxicity confirms higher lipolytic activity of the membrane and oxidation of membrane-bound fatty acids, which intensify peroxidation of lipids (Lacan and Baccou, 1998).…”

Section: Discussionsupporting

confidence: 92%

Boron Enhances Antioxidative Defense in the Leaves of Salt-affected <i>Pistacia vera</i> Seedlings

2018

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Section: Discussionsupporting

confidence: 92%

Boron Enhances Antioxidative Defense in the Leaves of Salt-affected <i>Pistacia vera</i> Seedlings

2018

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“…As stated by Lacan and Baccou (1998) when studying melon varieties, those fruit with higher antioxidant levels were able to be stored for longer periods, representing an extension in shelflife. However, Menichini et al (2009) reported that quality and quantity of such bioactive compounds are directly influenced by harvest stage, genotype, climate and cultivation techniques.…”

Section: Introductionmentioning

confidence: 91%

Antioxidant compoundsand total antioxidant activity in fruits of acerola from cv. Flor Branca, Florida Sweet and BRS 366

Souza¹,

Moura

Brito

et al. 2014

Rev. Bras. Frutic.

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-Information on antioxidant properties at different ontological stages may help producers and food technologists to identify which cultivar and/or maturity stage are most adequate for their need, therefore this work aimed to study the changes in the antioxidant metabolism during acerola development. Fruit from cv. Flor Branca, BRS366 and Florida Sweet were harvested at different stages: immature green colored (I), physiologically mature with green color and maximum size (II), breaker (III) and full red ripe (IV). After harvest, fruits were selected, divided into four replications with 500 g each and evaluated regarding their titratable acidity, pH, soluble solids, total soluble sugar, vitamin C, polyphenol, anthocyanin, yellow flavonoid, total antioxidant activity and antioxidant enzyme activity. Anthocyanin and flavonoid were determined through LC-DAD-ESI/MS and all analysis followed a completely randomized factorial 3 x 4 design. Fruits of 'Florida Sweet' presented significantly higher soluble solids (9.46°Brix). Vitamin C content decreased during ripening, but ripe 'BRS 366' fruits showed the greatest values (1363 mg.100 g -1 ) and highest TAA with 42.36 µM TEAC.g -1 FW. Cyanidin 3-rhamnoside (520.76 mg.100 g -1 DM) and quercetin 3-rhamnoside (33.72 mg.100 g -1 DM) were the most abundant anthocyanin and yellow flavonoids found mainly in 'Flor Branca' fruit of acerola, whose antioxidant enzymes activities were also higher. Ripe 'Florida Sweet' fruit presents a great potential for fresh consumption, meanwhile physiologically mature 'BRS 366' fruit seems the best option for the bioactive compounds processing industry. As 'Flor Branca' fruit of acerola kept the highest activity levels, it could be an indicative of greater potential for postharvest conservation. Index Terms: Malpighia emarginata, development, vitamin C, enzymes, polyphenols. COMPOSTOS ANTIOXIDANTES E ATIVIDADE ANTIOXIDANTE TOTAL EM FRUTOS DAS VARIEDADES FLOR BRANCA, FLORIDA SwEET E BRS 366 DE ACEROLEIRARESUMO -Informações sobre propriedades antioxidantes em diferentes estádios ontológicos podem ajudar os produtores e tecnólogos de alimentos a identificar quais cultivares e/ou estádio de maturidade são os mais adequados para a sua necessidade; portanto, o objetivo deste trabalho foi estudar as alterações no metabolismo antioxidante durante o desenvolvimento de frutos da aceroleira. Frutos das cv. FlorBranca, BRS 366 e Florida Sweet foram colhidos em diferentes estádios: imaturos com cor verde (I), fisiologicamente maduros com cor verde e tamanho máximo (II), com cor predominantemente vermelha (III) e totalmente vermelha, maduro (IV). Após a colheita, os frutos foram selecionados, divididos em quatro repetições com 500 g cada e avaliados quanto à acidez titulável, pH, sólidos solúveis, açúcares solúveis totais, vitamina C, polifenóis, antocianinas, flavonoides amarelo, atividade antioxidante total e atividade de enzimas antioxidantes. Antocianina e flavonoides foram determinados por meio LC-DAD-ESI/MS, e todas as análises seguiram um deline...

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“…So, ripe or over-ripe fruit show an imbalance between reactive oxygen species production and scavenging mechanisms, which leads to cell death. Besides natural senescence, stressful conditions such as storage under chilling temperatures also lead to accumulation of peroxidation products [8].…”

Section: Antioxidant Enzymes and Lipid Peroxidation Analysismentioning

confidence: 99%

“…The oxidative stress is imposed as reactive oxygen species, superoxide ( ) and hydrogen peroxide (H 2 O 2 ) accumulate, resulting in metabolic disorder due to protein and nucleic acid oxidation and lipid peroxidation, which may be used as a maturity or stress indicator [5]. Therefore, whole or processed plant tissue with high antioxidant capacity presents a greater potential for tolerance to abiotic stresses such as cold [6,7] and extension of postharvest storage life [8].…”

Section: Introductionmentioning

confidence: 99%

Effect of a galactomannan coating on mango postharvest physicochemical quality parameters and physiology

Aguiar¹,

Miranda²,

Lima³

et al. 2011

Fruits

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--Introduction. Films act as semi-permeable gaseous barriers capable of maintaining fruit postharvest quality; thus coatings consisting of non-traditional sources may represent an alternative tool for producers. The objective of our work was to investigate the effect of a galactomannan coating on postharvest quality and physiology of 'Tommy Atkins' mangoes. Materials and methods. Physiologically mature mangoes were divided into four lots and stored for 16 d. Control uncoated fruits (lot 1) were stored at ambient temperature (25°C), the second lot was uncoated and refrigerated (14°C), the third lot was coated and stored at ambient temperature, and the fourth lot was coated and refrigerated. Fruit were analyzed for physicochemical quality parameters, antioxidant enzymatic activity and lipid peroxidation. Results and discussion. Control fruit (lot 1) lost almost twice the weight of uncoated refrigerated (lot 2) and coated mangoes at both temperatures (lots 3 and 4); the fruit of lot 1 softened faster. Regarding the antioxidant enzymes, the activity of superoxide dismutase decreased throughout storage without statistical differences between treatments and catalasic activity was significantly inhibited under refrigeration. At ambient temperature, coating delayed the catalasic activity peak to day 12, which was coincident with the lowest lipid peroxidation degree, evidencing the association of free radical production and scavenging mechanisms. The galactomannan coating was efficient in reducing weight loss and delaying softening; thus, it maintained quality of 'Tommy Atkins' mangoes for a longer period of time than the control treatment during storage at ambient temperature. Refrigeration (14°C) enhanced the performance of the galactomannan coating; it was effective in slowing down the metabolism and delaying softening to day 12.Brazil / Mangifera indica / fruits / storage / postharvest technology / coating / refrigeration / antioxidants / keeping quality / quality Effet d'un enrobage de galactomannane sur les paramètres de qualité physico-chimique et la physiologie de la mangue en post-récolte.Résumé --Introduction. Les films agissent comme des barrières gazeuses semi-perméables capables de maintenir la qualité après récolte des fruits, ainsi un enrobage de type non traditionnel pourrait présenter un attrait pour les producteurs. L'objectif de notre travail a été d'étudier l'effet du revêtement de galactomannane sur la qualité post-récolte et la physiologie de mangues 'Tommy Atkins'. Matériel et méthodes. Des fruits physiologiquement mûrs ont été divisés en quatre lots et stockés pendant 16 j. Des fruits témoins non traités ont été entreposés à température ambiante (25°C) ; un deuxième lot de fruits non traités a été réfrigéré (14°C) ; un troisième lot a été enrobé de galactomannane et stocké à température ambiante ; le quatrième lot a été enrobé et réfrigéré. Les fruits ont été analysés à partir de certains paramètres de leur qualité physico-chimique, ainsi que pour leur activité enzymatique antioxydante et...

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High levels of antioxidant enzymes correlate with delayed senescence in nonnetted muskmelon fruits

Cited by 184 publications

References 28 publications

Boron Enhances Antioxidative Defense in the Leaves of Salt-affected <i>Pistacia vera</i> Seedlings

Boron Enhances Antioxidative Defense in the Leaves of Salt-affected <i>Pistacia vera</i> Seedlings

Antioxidant compoundsand total antioxidant activity in fruits of acerola from cv. Flor Branca, Florida Sweet and BRS 366

Effect of a galactomannan coating on mango postharvest physicochemical quality parameters and physiology

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