LE BRUNISSEMENT ENZYMATIQUE PDF

After having provided an overview of botanical, agricultural and genetic aspects, it covers the outcome of vegetables postharvest and discusses the scientific basis for this evolution, conservation methods and problems encountered. Extract from the table of contents: Description, production and genetic improvement of vegetables classification and main physiological characteristics; various impacts of cultivating methods; genetics and the creation of new varieties; carrots; potatoes; stem and leaf vegetables; tomatoes and genetic improvements; green beans; canned peas; genetic improvement of peas; cauliflower and broccoli. Outcome of vegetables postharvest basic physiology; enzymatic browning; effect of pathological disorders on the quality of vegetables at consumer level; the cold chain: precooling, storage, transport and distribution; physiological impact of cold storage; storage and modified-atmosphere packaging. Processing and products: canned foods; quick-frozen foods; minimally processed foods; prepared foods; potato processing for human consumption; fermented vegetables; fibres extracted from vegetables. Some articles will be abstracted in a future issue of the IIR Bulletin.

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The article reviews methods already used in the food industry to prevent enzymic browning and also examines methods being developed.

Following a brief overview of economic considerations, the author gives a brief description of the reactions involved in colour change, and provides an update on preventive approaches: variety improvement, reduction in processing- or handling-related damage, physical treatments blanching, maintaining of contact with atmospheric oxygen, packaging ensuring gas-tight conditions , chemical methods ascorbic acid, sodium and potassium chlorides, sulphur dioxide and precursors, and other inhibiting agents under investigation.

Although significant progress has been achieved over the past few years, practical means of preventing enzymic browning that are suitable alternatives to treatment with SO2 have proven to be either insufficiently effective or too expensive.

More research is required in order to develop suitable alternatives. Estimating quality deterioration of agricultura Calculation and prediction of postharvest fruit Vacuum cooling meets postharvest demands. The inhibition of enzymatic browning in minimal Fruit and vegetables: prevention of enzymic browning. Type of article: Article. Froid - vol. Date : Languages : German Source: Ind. Date : Languages : English Source: Environ.

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