Lentil seeds (Lens culinaris var. Castellana) were provided by
Semillas Iglesias S. A. (Salamanca, Spain) and stored in polyethylene
bins at 4 C. Commercial food-grade enzymes Alcalase 2.4L FG
(2.4 AU/g), Savinase (16 KNPU/g) and Protamex (1.5 AU/g), were
kindly provided by Novozymes (Bagsvaerd, Denmark). Corolase
7089 was provided by AB Enzymes GmbH (Darmstadt, Germany).
The tripeptide Abz-Gly-Phe(NO2)-Pro was purchased from Cymit-
Quimica (Barcelona, Spain). All other chemicals were purchased
from Sigma (Barcelona, Spain) unless otherwise specified.