Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.22/5273
Título: Improvement of vegetables elemental quality by espresso coffee residues
Autor: Cruz, Rebeca
Morais, Simone
Mendes, Eulália
Pereira, José A.
Baptista, Paula
Casal, Susana
Palavras-chave: Coffee by-products
Lettuce
Composting
Minerals
Macro-elements
Micro-elements
Data: 1-Abr-2014
Editora: Elsevier
Relatório da Série N.º: Food Chemistry;Vol. 148
Resumo: Spent coffee grounds (SCG) are usually disposed as common garbage, without specific reuse strategies implemented so far. Due to its recognised richness in bioactive compounds, the effect of SCG on lettuce’s macro- and micro-elements was assessed to define its effectiveness for agro industrial reuse. A greenhouse pot experiment was conducted with different amounts of fresh and composted spent coffee, and potassium, magnesium, phosphorous, calcium, sodium, iron, manganese, zinc and copper were analysed. A progressive decrease on all lettuce mineral elements was verified with the increase of fresh spent coffee, except for potassium. In opposition, an increment of lettuce’s essential macro-elements was verified when low amounts of composted spent coffee were applied (5%, v/v), increasing potassium content by 40%, manganese by 30%, magnesium by 20%, and sodium by 10%, of nutritional relevance This practical approach offers an alternative reuse for this by-product, extendable to other crops, providing value-added vegetable products.
Peer review: yes
URI: http://hdl.handle.net/10400.22/5273
DOI: 10.1016/j.foodchem.2013.10.059
Versão do Editor: http://www.sciencedirect.com/science/article/pii/S0308814613014957
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