Combined effect of high pressure, temperature and holding time on polyphenoloxidase and peroxidase activity in banana (Musa acuminata)
✍ Scribed by MacDonald, Laurie; Schaschke, Carl J
- Publisher
- John Wiley and Sons
- Year
- 2000
- Tongue
- English
- Weight
- 119 KB
- Volume
- 80
- Category
- Article
- ISSN
- 0022-5142
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✦ Synopsis
Polyphenoloxidase and peroxidase enzyme activities were evaluated following combined pressure, temperature and holding time treatment in banana (Musa acuminata). Using pressures of up to 110 MPa, temperatures of up to 70 °C and holding times of up to 25 min, based on a 2 3 central composite design, the interactive effects were found to signi®cantly in¯uence the activity of both enzymes in prepared banana pulp. Temperature and pressure were found to in¯uence the inactivation of polyphenoloxidase separately, while temperature, pressure and holding time were found to in¯uence the loss of peroxidase in the banana, although no signi®cant interactive effects were found. The reduction in polyphenoloxidase activity was found to be less in¯uenced by the combined treatment than peroxidase activity, thought to be due to solubilisation of the enzyme and effects of the soluble solids content.