title: The occurrence and nature of electrochemical activity in milk from a herd of dairy cows.
abstract: Amperometric sensors may be used in milk analysis but electrochemical interference from compounds other than the analyte is an on-going problem. A survey was made of the level of electrochemical activity (potential interference) in milk from a herd of dairy cows grazing on summer pasture. It was a ubiquitous feature of the aqueous phase of whey and de-proteinized milk over about 3 months. The nature of the interference was studied by differential pulse voltammetry and responses to ascorbic acid oxidase and uricase. The principal source of interference appeared to be uric acid.
authors.affiliation: AgResearch Grasslands, Private Bag 11008, Palmerston North, New Zealand.
authors.forename: Jarod
authors.initials: J
authors.lastname: Brain
authors.forename: Wendy
authors.initials: W
authors.lastname: Collier
authors.forename: Alan
authors.initials: A
authors.lastname: Hart
mesh_terms: D000818:Animals; D001205:Ascorbic Acid / Q000737:chemistry; D002417:Cattle; D004563:Electrochemistry / Q000379:methods; D005260:Female; D008892:Milk / Q000737:chemistry*; D010088:Oxidoreductases / Q000378:metabolism; D006109:Poaceae; D014503:Urate Oxidase / Q000378:metabolism; D014527:Uric Acid / Q000737:chemistry*
chemical_list: D014527:Uric Acid; D010088:Oxidoreductases; D014503:Urate Oxidase; D001205:Ascorbic Acid