Characterization of polyphenol oxidase activity in a range of forage ecotypes with different phenol substrates: A new insight for PPO and protein-bound phenol evaluation

Andrea Cabiddu, Michael Richard Lee, Mauro Decandia, Giovanni Molle, Lorenzo Salis, Mirella Varqui, Ana Louise Winters

Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

9 Dyfyniadau(SciVal)

Crynodeb

Plant phenols can influence utilization of forages by ruminants through binding with proteins either by complexing with oxidized phenols (products of polyphenol oxidase activity or formed in oxidizing conditions) or by hydrogen binding with tannins. These protein-bound phenols (PBPs) affect rumen metabolism by inhibition of both proteolysis and lipolysis. The aim of this work was to assess the level of polyphenol oxidase (PPO) activity (determined with a range of diphenolic substrates), PBP content, and to identify the main source of variation in different forage ecotypes harvested at different phenological stages. PPO activity was strongly influenced by substrate type with a significant effect of forage ecotype. Forage ecotype and phenological stage also influenced PPO and PBP content. PPO showed a strong relationship with dry matter and phenol content of plants.
Iaith wreiddiolSaesneg
Tudalennau (o-i)678-692
Nifer y tudalennau15
CyfnodolynGrass and Forage Science
Cyfrol69
Rhif cyhoeddi4
Dyddiad ar-lein cynnar19 Medi 2013
Dynodwyr Gwrthrych Digidol (DOIs)
StatwsCyhoeddwyd - 01 Rhag 2014

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Gweld gwybodaeth am bynciau ymchwil 'Characterization of polyphenol oxidase activity in a range of forage ecotypes with different phenol substrates: A new insight for PPO and protein-bound phenol evaluation'. Gyda’i gilydd, maen nhw’n ffurfio ôl bys unigryw.

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