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Electron beam irradiator for post-harvest processing of chestnut fruits: techni...
Antonio, Amilcar L.; Bento, Albino; Botelho, M. Luisa; Quintana, Begoña; Zimek, ZbigniewIn a recent worldwide estimation, food irradiation processing represents about 400 000 ton, from which almost half (186 000 ton) were to eliminate insects. In EU Mediterranean countries chestnut fruits production represents a market of more than 100 000 ton, being Portugal the third producer with an amount of 20 000 ton, exporting 25% of the production, representing an income of about 15 million Euros. In March...
Effects of gamma and electron beam irradiations on the triacylglycerol profile ...
Barreira, João C.M.; Carocho, Márcio; Ferreira, Isabel C.F.R.; Antonio, Amilcar L.; Kałuska, Iwona; Botelho, M. Luísa; Bento, Albino; Oliveira, M.B.P.P.The present chestnut (Castanea sativa Miller) commercialization dynamics, including distribution to novel markets, demands suitable conservation technologies. Irradiation has been considered a promising alternative to chemical fumigation (legally forbidden and harmful for human health and environment) or heat treatments (technological difficulties and low efficiency). Following previous studies on the effects o...
Application of gamma and electron beam irradiation for chestnuts conservation
Carocho, Márcio; Antonio, Amilcar L.; Barreira, João C.M.; Barros, Lillian; Rafalski, Andrzej; Botelho, M. Luísa; Oliveira, M.B.P.P.; Bento, AlbinoDue to the distribution of low quality products, adulteration, counterfeit on the Ukrainian market, the widening of export-import supplies, it is too important to develop criteria and methods for the identification domestic and exported food products, detection of adulteration, techniques and methods assessing quality and early spoilage screening of food products using modern express methods of analysis. Such m...
Dosimetric characterization of a multipurpose experimental Gamma chamber
Antonio, Amilcar L.; Carocho, Márcio; Santos, Pedro; Cabo Verde, S.; Bento, Albino; Botelho, M. Luísa; Quintana, BegoñaIonizing radiation is used as an industrial process for different purposes: sterilization, disinfestation, increase food products shelf life or for materials modification. Each industrial use is preceded by a validation process, to study the impact of the radiation on the product characteristics. At Nuclear and Technological Campus, Portugal, an experimental gamma chamber with four Co-60 sources, with a total a...
Gamma irradiation preservation of chestnut fruits: effects on color and texture
Antonio, Amilcar L.; Fernandes, Ângela; Bento, Albino; Ferreira, Armando; Trigo, M. João; Botelho, M. Luísa; Quintana, Begoña; Ramalhosa, ElsaChestnuts are a seasonal fruit that must be postharvest treated to meet food safety regulations. In this study the effect of gamma irradiation on color and texture of chestnut fruits from a European variety (Castanea sativa Miller) was reported. The fruits were subjected to gamma irradiation doses of 0.5, 3 and 6 kGy, with color and texture properties analyzed along a typical commercial period for this fruit af...
Effects of gamma irradiation on the chemical composition and antioxidant activi...
Fernandes, Ângela; Antonio, Amilcar L.; Barreira, João C.M.; Botelho, M. Luísa; Oliveira, M.B.P.P.; Martins, Anabela; Ferreira, Isabel C.F.R.TThe short shelf-life of mushrooms is an obstacle to the distribution and marketing of the fresh product. There has been extensive research on finding the most appropriate technology for mushrooms preservation and a particular interest arises for wild species. Treatment by irradiation emerges as a possible conservation technique that has been tested successfully in several food products. Herein, the effects of ...
Effects of gamma irradiation in Castanea sativa tocopherols profile: study exte...
Carocho, Márcio; Antonio, Amilcar L.; Barreira, João C.M.; Botelho, M. Luísa; Bento, Albino; Ferreira, Isabel C.F.R.In the region of Trás-os-Montes, chestnut production represents a significant income, estimated to be about 15 M€ in 2010. It is therefore, mandatory to develop a safe, reliable and cheap disinfestation alternative to post-harvest fumigation with methyl bromide, since its eradication in 2010 by the European Union, due to environmental concerns and danger for the operators. Hot water dip is being used as a repla...
Antioxidant properties of three different Castanea sativa Portuguese varieties ...
Carocho, Márcio; Antonio, Amilcar L.; Bento, Albino; Botelho, M. Luísa; Ferreira, Isabel C.F.R.The Northeast of Portugal is responsible for 82% of the nation's total production of chestnuts. Since 2010, European legislation has banned the use of Methyl Bromide in chestnut disinfestation due to environment concerns and health related issues. This fumigant was widely applied over chestnuts and other fruits to kill insects and other contaminating agents, and, although dangerous, it was the most efficient tr...
Preservation of chestnut fruits by gamma irradiation: inter-comparison of absor...
Antonio, Amilcar L.; Bento, Albino; Quintana, Begoña; Botelho, M. LuísaFood irradiation is a well established process, approved by international organizations of food (FAO – Food and Agriculture Organization) and health (WHO – World Health Organization), and regulated in European Union by the Directive 1999/2/EC. Chestnuts are a seasonal fruit that must be post-harvest treated to meet the food safety regulations. Until recently, this was done with methyl bromide fumigation that wa...
The effects of e-beam radiation in the antioxidant potential of chestnuts (Cast...
Carocho, Márcio; Antonio, Amilcar L.; Kałuska, Iwona; Bento, Albino; Botelho, M. Luísa; Ferreira, Isabel C.F.R.Chestnut fruits (Castanea sativa Mill.) are widely consumed all over the world, and have been studied in terms of nutritional value and also for their antioxidant potential [1]. In Europe, Portugal is a leading producer of this nut, along with Italy, and the conservation of the chestnut’s properties is essential, especially for export [2]. Irradiation might be an alternative conservation method, since Methyl Br...
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