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Advisor(s)
Abstract(s)
O setor do castanheiro (Castanea sativa Mill.) encontra-se numa situação de grande ambiguidade. Se por um lado os
produtores têm sentido um forte estímulo a apostar na cultura, devido aos preços favoráveis que a castanha vem
mantendo, por outro tende a surgir algum desânimo, pelas doenças e pragas que enfermam a cultura. De qualquer
forma, a castanha continua a ser a principal fonte de receita dos agricultores de diversas freguesias do Norte e Centro do
país, com a produção Nacional a ultrapassar as 34 000 t de castanha (INE, 2019). No presente, o castanheiro é valorizado
sobretudo pela parte comestível da castanha. Contudo, numa perspetiva de aumento da rendibilidade dos produtores
e demais agentes da fileira e da sustentabilidade dos sistemas de produção, seria importante encontrar novas valorizações
para os subprodutos associados à colheita e transformação industrial. Com alguma expressão quantitativa, cascas
(3000 t ano-1), ouriços (10 000 t ano-1) e lenha de poda (30 000 t ano-1) mas também flores e folhas podem ser matérias-
-primas importantes para diferentes áreas de negócio, em especial porque contêm um elevado número de compostos
químicos com potencial aplicação na indústria alimentar e/ou farmacêutica. Neste trabalho serão apresentados alguns
dados estatísticos da cultura e apresentada uma estimativa da produção dos subprodutos, bem como algumas das suas
potenciais utilizações.
The sector of chestnut (Castanea sativa Mill.) experiences a highly ambiguous situation. If, on one hand, producers have felt a strong incentive to invest in the crop, due to the favourable prices that the nut has been maintaining, on the other hand some discouragement tends to arise, due to the diseases and pests that devastate the crop. In any case, the chestnut remains the main source of income for farmers in several communities in the North and Centre of the country, with national production exceeding 34,000 t of nuts (INE, 2019). Nowadays, the chestnut is valued mainly for the edible part of the fruit. However, with a view to improve the profitability of producers and other agents in the sector and to increase the sustainability of the production systems, it would be important to find new uses for the by-products associated with the harvest and the industrial transformation. With some quantitative expression, bark (3000 t year- 1), hedgehogs (10 000 t year-1) and pruning wood (30 000 t year-1), but also flowers and leaves, can be important raw materials for different business areas, especially as they contain a high number of chemical compounds with potential application in the food and/or pharmaceutical industry. In this work some statistical data of the species and an estimate of the by-products are presented, as well as some of their potential uses.
The sector of chestnut (Castanea sativa Mill.) experiences a highly ambiguous situation. If, on one hand, producers have felt a strong incentive to invest in the crop, due to the favourable prices that the nut has been maintaining, on the other hand some discouragement tends to arise, due to the diseases and pests that devastate the crop. In any case, the chestnut remains the main source of income for farmers in several communities in the North and Centre of the country, with national production exceeding 34,000 t of nuts (INE, 2019). Nowadays, the chestnut is valued mainly for the edible part of the fruit. However, with a view to improve the profitability of producers and other agents in the sector and to increase the sustainability of the production systems, it would be important to find new uses for the by-products associated with the harvest and the industrial transformation. With some quantitative expression, bark (3000 t year- 1), hedgehogs (10 000 t year-1) and pruning wood (30 000 t year-1), but also flowers and leaves, can be important raw materials for different business areas, especially as they contain a high number of chemical compounds with potential application in the food and/or pharmaceutical industry. In this work some statistical data of the species and an estimate of the by-products are presented, as well as some of their potential uses.
Description
Keywords
Castanea sativa Produção de castanha Flores Cascas Ouriços Lenha de poda
Pedagogical Context
Citation
Rodrigues, M.A.; Barreira, João C.M.; Ferreira, Isabel C.F.R.; Bento, Albino (2020). Estimativa quantificada dos subprodutos do castanheiro e algumas utilizações potenciais = Estimating of chestnut by-products and some potential uses. Revista de Ciências Agrárias. ISSN 0871-018X. 43, spe2, p. 57-63
Publisher
Sociedade de Ciências Agrárias de Portugal