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Castanea sativa Mill. flowers amongst the most powerful antioxidant matrices: a...

Carocho, Márcio; Barros, Lillian; Bento, Albino; Santos-Buelga, Celestino; Morales, Patricia; Ferreira, Isabel C.F.R.

Infusions and decoction of chestnut tree flowers have been used for different medical purposes, but their phytochemical profile and antioxidant activity are still mostly unknown. Herein, decoctions and infusions of flowers from the two most appreciated chestnut cultivars (longal and judia) in Tr´as-os-Montes, Portugal, were prepared and characterized with regard to their content in free sugars, organic acids, a...

Data: 2014   |   Origem: Biblioteca Digital do IPB

Validation of gamma and electron beam irradiation as alternative conservation t...

Carocho, Márcio; Antonio, Amilcar L.; Barreira, João C.M.; Rafalski, Andrzej; Bento, Albino; Ferreira, Isabel C.F.R.

Chestnuts are widely consumed around the world, especially in China, which is the major producer. Portugal is the fifth biggest producer, reaching and income of 17 M€, with particular relevance for Trás-os-Montes region, which is responsible for 81% of Portuguese production. During postharvest storage, a number of pests tend to attack chestnuts, contributing to high economic losses. Since 2010, the most effecti...

Data: 2014   |   Origem: Biblioteca Digital do IPB

A review on antioxidants, prooxidants and related controversy: natural and synt...

Carocho, Márcio; Ferreira, Isabel C.F.R.

Many studies have been conducted with regard to free radicals, oxidative stress and antioxidant activity of food, giving antioxidants a prominent beneficial role, but, recently many authors have questioned their importance, whilst trying to understand the mechanisms behind oxidative stress. Many scientists defend that regardless of the quantity of ingested antioxidants, the absorption is very limited, and that ...

Data: 2013   |   Origem: Biblioteca Digital do IPB

Analysis of organic acids in electron beam irradiated chestnuts (Castanea sativ...

Carocho, Márcio; Barros, Lillian; Antonio, Amilcar L.; Barreira, João C.M.; Bento, Albino; Kałuska, Iwona; Ferreira, Isabel C.F.R.

Since 2010, methyl bromide, a widely used fumigant was banned from the European Union under the Montreal Protocol guidelines, due to its deleterious effects on health and risk to the environment. Since then, many alternatives for chestnut conservation have been studied (hot water dip treatment being the most common), among them, electron beam irradiation has been proposed as being a safe, clean and cheap altern...

Data: 2013   |   Origem: Biblioteca Digital do IPB

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...

Data: 2013   |   Origem: Biblioteca Digital do IPB

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, Albino

Due 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...

Data: 2013   |   Origem: Biblioteca Digital do IPB

Caracterização química do processo de reconhecimento da simbiose entre Pinus pi...

Carocho, Márcio; Ferreira, Isabel C.F.R.; Martins, Anabela

Os ecossistemas florestais resultam da associação entre espécies e organismos diferentes, sendo as micorrizas uma das associações mutualistas mais comuns e mais importantes entre plantas florestais e fungos. Estas associações beneficiam ambos os hospedeiros, nomeadamente, na absorção de água e minerais, na resistência ao stress e a organismos patogénicos. No processo de reconhecimento mútuo, os hospedeiros pode...

Data: 2013   |   Origem: Biblioteca Digital do IPB

Gamma and electron beam irradiation as an alternative for postharvest treatment...

Carocho, Márcio; Antonio, Amilcar L.; Barreira, João C.M.; Barros, Lillian; Rafalski, Andrzej; Bento, Albino; Ferreira, Isabel C.F.R.

Chestnut fruits are an important food commodity in the Northeast region of "Trás-osMontes", representing an income of approximately 17 M€ and being Porn1gal one of the: world's biggest producer. Due to environmental concerns a broad spectrum fumigant, methyl bromide, was banned in 20 I 0 by the European Union. Since then, no adequate postharvest treatment has been implemented, fostering research on suitable alt...

Data: 2013   |   Origem: Biblioteca Digital do IPB

Antioxidant potential of fungi and seedlings during mycorrhizal induction

Reis, Filipa S.; Carocho, Márcio; Carvalho, Filipa A.; Ferreira, Isabel C.F.R.; Martins, Anabela

Mycorrhizal associations implicate a chemical recognizing process being the establishment of the symbiosis triggered by signals produced by both partners. We evaluated the establishment of mycorrhizal symbiosis between two ectomycorrhizal (ECM) fungi species, Paxillus involutus and Pisolithus arhizus, and two different symbionts, Pinus pinaster and Castanea sativa. ln a first step, we monitored the growth of t...

Data: 2013   |   Origem: Biblioteca Digital do IPB

Influence of electron beam irradiation in the organic acids profile of Portugue...

Carocho, Márcio; Antonio, Amilcar L.; Barros, Lillian; Barreira, João C.M.; Bento, Albino; Rafalski, Andrzej; Ferreira, Isabel C.F.R.

Organic acids are primary metabolites that play important roles in plant metabolism and confer distinct flavors in fruits. Their consumption is beneficial for humans, namely against certain illnesses. The food industry uses them as preservatives and flavor enhancers. In fruits conservation and transport, organic acids should be preserved at all costs in order to maintain physical quality and pleasant flavors un...

Data: 2013   |   Origem: Biblioteca Digital do IPB

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    Financiadores do RCAAP

Fundação para a Ciência e a Tecnologia Universidade do Minho   Governo Português Ministério da Educação e Ciência Programa Operacional da Sociedade do Conhecimento União Europeia