TY - JOUR
T1 - Valorisation of spent coffee through membrane processing
AU - Ferreira, Carla Maria Carvalho Gil Brazinha de Barros
AU - Cadima, M.
AU - Crespo, J. G.
N1 - This work was developed as a Quadro de Referência Estratégica Nacional (QREN) project in collaboration with the company NovaDelta, Comércio e Indústria de Cafés, S.A. (Campo Maior, Portugal). The authors would like to acknowledge QREN for the financial support and NovaDelta, Comércio e Indústria de Cafés, S.A. for their support. The authors would also like to acknowledge the Fundação para a Ciência e a Tecnologia, Portugal for the Pos Doctoral Fellow grant SFRH/BPD/79533/2011 of Carla Brazinha.
PY - 2015/3
Y1 - 2015/3
N2 - This work optimised the sustainable process of producing a natural extract from spent coffee using membrane technology, with no organic solvents or adsorbents involved. The extract produced is enriched in caffeine with specific health benefits. Moreover, the extract has a "natural" label considering the use of biocompatible solvents and mild operating conditions, which is important for the target markets (cosmetics and energy food segments). Firstly, the optimisation of solvent extraction was performed, namely through adjusting its operating conditions, particularly extraction medium, weight ratio of extracting medium to spent coffee, extraction time and temperature of extraction. Then, the application of membranes was studied, evaluating whether the overall bioactivity of fractionated extracts through membrane processing (after removing undesirable larger molecules), was higher than the overall bioactivity of corresponding non fractionated extracts. An economic evaluation showed that the proposed process is viable, based on experimental data obtained at the pilot scale.
AB - This work optimised the sustainable process of producing a natural extract from spent coffee using membrane technology, with no organic solvents or adsorbents involved. The extract produced is enriched in caffeine with specific health benefits. Moreover, the extract has a "natural" label considering the use of biocompatible solvents and mild operating conditions, which is important for the target markets (cosmetics and energy food segments). Firstly, the optimisation of solvent extraction was performed, namely through adjusting its operating conditions, particularly extraction medium, weight ratio of extracting medium to spent coffee, extraction time and temperature of extraction. Then, the application of membranes was studied, evaluating whether the overall bioactivity of fractionated extracts through membrane processing (after removing undesirable larger molecules), was higher than the overall bioactivity of corresponding non fractionated extracts. An economic evaluation showed that the proposed process is viable, based on experimental data obtained at the pilot scale.
KW - Bioactivity
KW - Membrane processing
KW - Phenolic compounds
KW - Solvent extraction
KW - Spent coffee
UR - http://www.scopus.com/inward/record.url?scp=84908582755&partnerID=8YFLogxK
U2 - 10.1016/j.jfoodeng.2014.07.016
DO - 10.1016/j.jfoodeng.2014.07.016
M3 - Article
AN - SCOPUS:84908582755
SN - 0260-8774
VL - 149
SP - 123
EP - 130
JO - Journal of Food Engineering
JF - Journal of Food Engineering
ER -