RT Journal Article
T1 Valorisation of pork by-products to obtain antioxidant and antihypertensive peptides
A1 López-Pedrouso, María
A1 Lorenzo Rodríguez, José Manuel
A1 Bou Novensà, Ricard
A1 Vázquez Álvarez, José Antonio
A1 Valcárcel, Jesús
A1 Toldrà Alegret, Mónica
A1 Franco Ruiz, Daniel
K1 Meat by-products
K1 Porcine liver
K1 Autolysis
K1 Proteolysis
K1 Bioactive peptides
K1 Peptidomic
K1 Endogenous enzymes (proteases)
AB The porcine liver could be used for the extraction of zinc-protoporphyrin (ZnPP) as a natural red meat pigment. During the autolysis process, porcine liver homogenates was incubated at pH 4.8 and 45 °C under anaerobic conditions to obtain insoluble ZnPP. After incubation, the homogenates were readjusted at pH 4.8, and at pH 7.5 before being centrifuged at 5500 × g for 20 min at 4 °C and the resulting supernatant were compared with the obtained at pH 4.8 at the beginning of the incubation. The molecular weight distributions of the porcine liver fractions at both pHs were very similar, however, eight essential amino acids were more abundant in fractions obtained at pH 4.8. Regarding the ORAC assay, porcine liver protein fraction at pH 4.8 showed the highest antioxidant capacity but antihypertensive inhibition was similar for both pHs. Peptides with strong bioactivity potential from aldehyde dehydrogenase, lactoylglutathione lyase, SEC14-like protein 3 and others were identified. The findings have demonstrated the potential of the porcine liver to extract natural pigments and bioactive peptides
PB Elsevier
YR 2023
FD 2023
LK http://hdl.handle.net/10347/30670
UL http://hdl.handle.net/10347/30670
LA eng
NO Food Chemistry 423 (2023) 136351
NO Daniel Franco and José M. Lorenzo belong to the competitive reference research group, FunMeat (Axencia Galega de Innovación, GAININ607A2019/01) and Daniel Franco and Jose M. Lorenzo are members of the HealthyMeat network, funded by CYTED (Ref.119RT0568). José Antonio Vázquez and Jesus Valcarcel want to thank the financial support of Xunta de Galicia (Grupos de Potencial Crecimiento, IN607B 2021/11)
DS Minerva
RD 22 abr 2026