2002
DOI: 10.1111/j.1745-4514.2002.tb00765.x
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Effects of Harvesting Maturity and Off-Plant Ripening on the Activities of Lipoxygenase, Hydroperoxide Lyase, and Alcohol Dehydrogenase Enzymes in Fresh Tomato

Abstract: The specific activities of lipoxygenase (LOX), hydroperoxide lyase (HPL), and alcohol dehydrogenase (ADH) were determined at green, pink, and red stages of ripeness in twelve tomato cultivars ripened during storage. Also, the same measurements were done in six other cultivars harvested at breaker (BR) and red (RR), and ripened to full‐red stage of maturity. LOX and HPL showed highest activities at the pink stage of ripeness, whereas ADH was most active at the red stage. Variability of enzyme activity among ind… Show more

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Cited by 19 publications
(24 citation statements)
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“…Despite advances in tomato flavour analysis, breeders and molecular biologists still lack a clear genetic target for selection and manipulation of tomato taste attributes [25-27]. Transcriptional regulation mechanisms can modify the expression level of highly responsive genes.…”
Section: Discussionmentioning
confidence: 99%
“…Despite advances in tomato flavour analysis, breeders and molecular biologists still lack a clear genetic target for selection and manipulation of tomato taste attributes [25-27]. Transcriptional regulation mechanisms can modify the expression level of highly responsive genes.…”
Section: Discussionmentioning
confidence: 99%
“…The review by Hatanaka (1993), although mainly focused on green leaves, serves as an excellent guide to the understanding of the catalytic and mechanistic aspects related to the LOX pathway in any plant material. Numerous papers have described the importance of LOX to aroma biogeneration in fruits such as apple (Rowan et al, 1999, Defilippi et al, 2005a), cucumbers (Galliard and Phillips, 1976Feussner and Kindl, 1992), tomatoes (Galliard andMathew, 1977, Smith et al, 1997;Yilmaz et al, 2002;Chen et al, 2004), banana (Jayanty et al, 2002), strawberry Leone et al, 2006) or olive Pérez et al, 2003). Though some readily volatile compounds (C5 carbonyls) might be generated through an additional branch of the LOX pathway from LNA (Gardner et al, 1996), the first readily volatile compounds formed in this pathway came from the cleavage of FAhydroperoxides catalysed by the enzyme hydroperoxide lyase (HPL).…”
Section: Lox (Lipoxygenase) Pathwaymentioning
confidence: 97%
“…Sobre el flavor del tomate influye la variedad (Stevens, 1972;Stevens et al, 1977;Stevens et al, 1979;Baldwin et al, 1991a;Baldwin et al, 1991b;Langlois et al, 1996;Brauss et al, 1998;Berna et al, 2004;Ruíz et al, 2005;Carbonell-Barrachina et al, 2006), el clima durante el cultivo, el estado de maduración del fruto (Baldwin et al, 1991b;Buttery, 1993;White, 2002;Tieman et al, 2006;Prasanna et al, 2007), las prácticas culturales (Dalal et al, 1967;Besford y Hobson, 1975;Wright y Harris, 1985;Thybo et al, 2006), y el manejo postcosecha (Kader et al, 1978;Buttery et al, 1987;Buttery, 1993;Servili et al, 2000;Krumbein et al, 2004). Entre estos factores, la falta de madurez en el momento de la recolección Watada y Aulenbach, 1979;Buttery et al, 1987;Maul et al, 1998;Yilmaz et al, 2002b), la baja temperatura de almacenamiento (Stern et al, 1994;McDonald et al, 1999), y el pobre potencial genético de las variedades comerciales (Baldwin et al, 1991a;, se consideran las principales causas de la baja calidad organoléptica que presentan actualmente los tomates comerciales (Baldwin y Scott, 2002).…”
Section: El Flavor Del Tomateunclassified
“…Las actividades lipoxigenasa (LOX) y alcohol deshidrogenasa (ADH) son esenciales en la biosíntesis de importantes compuestos volátiles en tomate Yilmaz et al, 2002b). Se ha descrito que los genes que codifican las LOX del tomate (Tomlox) son regulados diferencialmente por el etileno, ejerciendo cada uno una función específica, entre las que se sugiere la biosíntesis de compuestos volátiles, por lo que el etileno estaría jugando un importante papel en la biosíntesis de algunos de los compuestos volátiles derivados de esta ruta (Griffiths et al, 1999), como confirmaron más tarde Gao et al (2007).…”
Section: Efecto Del Etileno En La Biosíntesis De Compuestos Volátilesunclassified
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