Search results for "traditional landraces"

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Study and characterization of polyphenol oxidase from eggplant (Solanum melongena L.)

2011

ABSTRACT: In this study the catecholase and cresolase activities of eggplant polyphenol oxidase (PPO) were investigated. Enzyme activity was determined by measuring the increase in absorbance using catechol as substrate and 3-methyl-2- benzothiazolinone hydrazone (MBTH) as coupled reagent. The effects of substrate specificity, heat inactivation, temperature, pH, and inhibitors were investigated to understand the enzymatic alteration of ready-to-eat preparations. Browning of vegetables was determined through a colorimeter. Decrease of lightness (L*) and increase of color difference values (ΔE*) were correlated with tissue browning. Antibrowning agents were tested on PPO under the same condit…

Hot Temperaturefood industryCatecholsPolyphenol oxidaseSubstrate Specificitychemistry.chemical_compoundAcetic acidEnzyme StabilityBrowningSolanum melongenaFood scienceEnzyme InhibitorsbrowningCatecholbiologySubstrate (chemistry)traditional landracesGeneral ChemistrySettore AGR/15 - Scienze E Tecnologie AlimentariHydrogen-Ion Concentrationpolyphenol oxidase antibrowning food technologies ready-to-eatEnzyme assayMaillard ReactionKineticsBiochemistrychemistryaubergineTartaric acidbiology.proteingermplasm exploitationGeneral Agricultural and Biological SciencesCitric acidCatechol Oxidasetraditional landraces; browning; germplasm exploitation; food industry; aubergine
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