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An atmosphere rich in CO2 and oxygen enhances the quality of refrigerated potato
Date:2/18/2009

This release is available in Spanish.

The potato is a leading human staple diet in the world, with only maize, wheat and rice ahead of it. Its importance as a food is due to its nutritive value, being rich in carbohydrates and for its vitamin C, potassium and phosphorous content. The pattern of consumption has changed over the past few years, in tandem with changes in society and it is increasingly common for the potato to get to homes, not as a fresh product, but processed in some form or other. These latter products are known as fourth range products where fresh vegetables and fruit are cut up and canned/bottled before sale.

From the harvest to their marketing, vegetable products suffer damage produced by the triggering of a series of processes that tend to negatively affect the quality of, in this case, the potato. This tendency can be modulated by a number of control techniques for the surrounding conditions of the products, mainly the storage temperature, the relative humidity and the composition of the surrounding atmosphere.

The study of the effects of the composition of the atmosphere surrounding the processed potato was the objective of the PhD thesis defended by Mr Ignacio ngel Angs Iturgaiz at the Public University of Navarre. His work concluded that an atmosphere rich in carbon dioxide (CO2) and with high concentrations of oxygen (O2) enhances the quality of the minimally processed potato given that these factors slow down the loss processes of water and nutrients, and its change of colour (going a brown colour). This thesis was defended at the Department of Food Technology of the Higher Technical School of Agricultural Engineers. Mr Angs, agricultural engineer and researcher currently undertaking work at the ALITEC research group at the Public University of Navarre.

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Contact: Oihane Lakar
oihane@elhuyar.com
34-943-363-040
Elhuyar Fundazioa
Source:Eurekalert

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