title: Subzero-temperature preservation of reactive fluids in the undercooled state. II. The effect on the oxidation of ascorbic acid of freeze concentration and undercooling.
abstract: The rate of oxidation of ascorbic acid has been measured in both frozen and undercooled solutions. A new interpretation is advanced for changes in the rate of ascorbic acid oxidation in freeze-concentrated solutions. The results obtained with undercooled solutions indicate a rate reduction in line with that predicted by the Arrhenius equation. It is also demonstrated that undercoohng provides a method for greatly extending the shelf life of reactive fluids.
authors.affiliation: Pafra Ltd, Biopreservation Division, 150 Cambridge Science Park, Cambridge CB4 4GG Cambridge U.K.
authors.forename: R H
authors.initials: RH
authors.lastname: Hatley
authors.forename: F
authors.initials: F
authors.lastname: Franks
authors.forename: H
authors.initials: H
authors.lastname: Day