The authors are grateful to Fundac¸ ão para a Ciência e
a Tecnologia (FCT, Portugal) for financial support to CIMO
(strategic project PEst-OE/AGR/UI0690/2014) and M.I. Dias grant
(SFRH/BD/84485/2012). This work received financial support from
the European Union (FEDER funds through COMPETE) and National
Funds (FCT) through project UID/QUI/50006/2013, and FEDER
funds under the framework of QREN through Project NORTE-07-
0124-FEDER-000069.