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- Publications
- Influence
The biochemistry and control of enzymatic browning
- M.Victoria Martínez, J. Whitaker
- Biology
- 1 June 1995
Abstract Half of the world's fruit and vegetable crops is lost due to postharvest deteriorative reactions. Polyphenol oxidase (PPO), found in most fruit and vegetables, is responsible for enzymatic… Expand
Determination of Molecular Weights of Proteins by Gel Filtration of Sephadex.
- J. Whitaker
- Chemistry
- 1 November 1963
Principles of enzymology for the food sciences
- J. Whitaker
- Chemistry
- 1972
The Protein Nature of Enzymes. Enzyme Purification. Active Sites and Factors Responsible for Enzyme Catalysis. Rates of Reactions. Effect of Substrate Concentration on Rates of Enzyme-Catalyzed… Expand
Cloning, sequencing, purification, and crystal structure of Grenache (Vitis vinifera) polyphenol oxidase.
- V. Virador, Juan P Reyes Grajeda, +4 authors J. Whitaker
- Chemistry, Medicine
- Journal of agricultural and food chemistry
- 27 January 2010
The full-length cDNA sequence (P93622_VITVI) of polyphenol oxidase (PPO) cDNA from grape Vitis vinifera L., cv Grenache, was found to encode a translated protein of 607 amino acids with an expected… Expand
Purification and properties of a neutral peroxidase isozyme from turnip (Brassica napus L. Var. Purple Top White Globe) roots.
- M. A. Duarte-Vázquez, B. E. García-Almendárez, C. Regalado, J. Whitaker
- Chemistry, Medicine
- Journal of agricultural and food chemistry
- 28 August 2001
A neutral peroxidase isozyme (pI 7.2) from turnip roots (TNP) was purified to homogeneity and partially characterized. TNP is a monomeric glycoprotein with 9.1% carbohydrate content and a molecular… Expand
Microbial Pectolytic Enzymes
- J. Whitaker
- Biology
- 1990
Pectolytic enzymes are widely distributed in higher plants and microorganisms. They are not found in higher animals but are found in some protozoa, nematodes and insects. In higher plants, they are… Expand
MODIFICATION OF PROTEINS BY POLYPHENOL OXIDASE AND PEROXIDASE AND THEIR PRODUCTS
- G. Matheis, J. Whitaker
- Chemistry
- 1 September 1984
Blanching of vegetables for freezing: which indicator enzyme to choose
- D. Williams, M. H. Lim, A. O. Chen, R. Pangborn, J. Whitaker
- Chemistry
- 1986
- 140
- 10
Isolation and characterization of polyphenol oxidase isozymes of clingstone peach.
- T. C. Wong, B. Luh, J. Whitaker
- Chemistry, Medicine
- Plant physiology
- 1 July 1971
The polyphenol oxidase system in clingstone peach (Prunus persica) was investigated. Polyacrylamide disc-gel electrophoresis indicated four bands with polyphenol oxidase activity in extracts from… Expand