Fractionation and identification of the phenolic compounds of Highbush blueberries (Vaccinium corymbosum, L.)
β Scribed by F. Kader; B. Rovel; M. Girardin; M. Metche
- Book ID
- 103711046
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 622 KB
- Volume
- 55
- Category
- Article
- ISSN
- 0308-8146
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The most efficient method for polyphenol oxidase (PPO) extraction from Highbush blueberry fruits was the preparation of an acetone powder. No activity was detected after direct extraction with phosphate bu β er (pH 6Γ5) and detergents such as Triton X-100. PPO has been puriΓed 19-fold, by ultraΓltrat
Browning reactions which occurred after crushing fresh blueberries (V accinium corymbosum L) were followed by determination of chlorogenic acid colour density, polymer colour and the level of polymers. A polyphenol oxidase (PPO) activity plays a dominant role in enzymatic browning. Peroxidase (POD)