Lipolysis in red clover with different polyphenol oxidase activities in the presence and absence of rumen fluid

2007 ◽  
Vol 87 (7) ◽  
pp. 1308-1314 ◽  
Author(s):  
Michael RF Lee ◽  
Lorna J Parfitt ◽  
Nigel D Scollan ◽  
Frank R Minchin
Keyword(s):  
Polyphenol Oxidase ◽  
Rumen Fluid ◽  
Red Clover ◽  
Presence And Absence

scholarly journals Nitrogen and fatty acid rumen metabolism in cattle offered high or low polyphenol oxidase red clover silage

animal ◽  
2019 ◽  
Vol 13 (8) ◽  
pp. 1623-1634 ◽  
Author(s):  
M.R.F. Lee ◽  
R. Fychan ◽  
J.K.S. Tweed ◽  
N. Gordon ◽  
V. Theobald ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Polyphenol Oxidase ◽  
Red Clover ◽  
Rumen Metabolism

Bioactive forage legumes as a strategy to improve silage quality and minimise nitrogenous losses

2014 ◽  
Vol 54 (10) ◽  
pp. 1826 ◽  
Author(s):  
G. Copani ◽  
C. Ginane ◽  
A. Le Morvan ◽  
V. Niderkorn
Keyword(s):  
Polyphenol Oxidase ◽  
Condensed Tannins ◽  
Ternary Mixture ◽  
Inorganic Nitrogen ◽  
Red Clover ◽  
Secondary Compounds ◽  
Forage Legumes ◽  
Chemical Structures ◽  
Silage Quality ◽  
Silage Process

The use of forage legumes as a source of protein for ruminants is a sustainable strategy to reduce the use of inorganic-nitrogen fertiliser. In addition, some legumes species contain naturally bioactive secondary compounds, which could improve silage quality and digestive processes in ruminants. The aim of this study is to investigate the effects of bioactive legumes containing condensed tannins or polyphenol oxidase, ensiled alone or in mixture with a grass, on silage quality and conservation characteristics. Six mini-silos were prepared in triplicate as follows: 100% red clover (RC), 100% sainfoin (SF), 100% Timothy (T, control without bioactive compounds), binary mixtures 50% T + 50% RC, 50% T + 50% SF and ternary mixture 50% T + 25% RC + 25% SF. Condensed tannins remain unaltered during the silage-making process in terms of quantity and chemical structures, while polyphenol oxidase is activated during this process. All the silages that contained bioactive legumes were better conserved than the pure grass silo. In addition bioactive legumes were able to preserve protein from their degradation during the silage process. Inclusion of bioactive legumes can improve silage quality, and polyphenol oxidase may be more efficient than condensed tannins to improve the nitrogen value of silage.

Plant-mediated lipolysis and proteolysis in red clover with different polyphenol oxidase activities

2004 ◽  
Vol 84 (13) ◽  
pp. 1639-1645 ◽  
Author(s):  
Michael RF Lee ◽  
Ana L Winters ◽  
Nigel D Scollan ◽  
Richard J Dewhurst ◽  
Michael K Theodorou ◽  
...  
Keyword(s):  
Polyphenol Oxidase ◽  
Red Clover

Latent and Active Polyphenol Oxidase (PPO) in Red Clover (Trifolium pratense) and Use of a Low PPO Mutant To Study the Role of PPO in Proteolysis Reduction

2008 ◽  
Vol 56 (8) ◽  
pp. 2817-2824 ◽  
Author(s):  
Ana L. Winters ◽  
Frank R. Minchin ◽  
Terry P. T. Michaelson-Yeates ◽  
Michael R. F. Lee ◽  
Phillip Morris
Keyword(s):  
Polyphenol Oxidase ◽  
Trifolium Pratense ◽  
Red Clover

Red clover polyphenol oxidase: Activation, activity and efficacy under grazing

2009 ◽  
Vol 149 (3-4) ◽  
pp. 250-264 ◽  
Author(s):  
Michael R.F. Lee ◽  
John K.S. Tweed ◽  
Frank R. Minchin ◽  
Ana L. Winters
Keyword(s):  
Polyphenol Oxidase ◽  
Red Clover

Gene Expression Patterns, Localization, and Substrates of Polyphenol Oxidase in Red Clover (Trifolium pratense L.)

2013 ◽  
Vol 61 (31) ◽  
pp. 7421-7430 ◽  
Author(s):  
K. Judith Webb ◽  
Alan Cookson ◽  
Gordon Allison ◽  
Michael L. Sullivan ◽  
Ana L. Winters
Keyword(s):  
Gene Expression ◽  
Polyphenol Oxidase ◽  
Trifolium Pratense ◽  
Expression Patterns ◽  
Red Clover ◽  
Gene Expression Patterns ◽  
Trifolium Pratense L

scholarly journals Red clover polyphenol oxidase and lipid metabolism

animal ◽  
2011 ◽  
Vol 5 (4) ◽  
pp. 512-521 ◽  
Author(s):  
G. Van Ranst ◽  
M.R.F. Lee ◽  
V. Fievez
Keyword(s):  
Lipid Metabolism ◽  
Polyphenol Oxidase ◽  
Red Clover

In VitroStudy of Red Clover Polyphenol Oxidase Activity, Activation, and Effect on Measured Lipase Activity and Lipolysis

2009 ◽  
Vol 57 (15) ◽  
pp. 6611-6617 ◽  
Author(s):  
G. Van Ranst ◽  
V. Fievez ◽  
M. Vandewalle ◽  
J. De Riek ◽  
E. Van Bockstaele
Keyword(s):  
Polyphenol Oxidase ◽  
Lipase Activity ◽  
Oxidase Activity ◽  
Red Clover ◽  
Polyphenol Oxidase Activity
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