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)
β¦ LIBER β¦
Changes in Anthocyanins and Polyphenolics During Juice Processing of Highbush Blueberries (Vaccinium corymbosum L.)
β Scribed by G. Skrede; R.E. Wrolstad; R.W. Durst
- Book ID
- 108823057
- Publisher
- Institute of Food Technologists
- Year
- 2000
- Tongue
- English
- Weight
- 158 KB
- Volume
- 65
- Category
- Article
- ISSN
- 0022-1147
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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