Redox (pro-oxidant/antioxidant) balance in the spray drying of orange peel extracts

Phenolic compounds have been reported to show both antioxidant and pro-oxidant properties. The effects of spray drying conditions on the balance between antioxidant and pro-oxidant properties of orange peel extract have been evaluated in this work. The inlet drying temperatures (ranging between 100...

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Bibliographic Details
Published inDrying technology Vol. 34; no. 14; pp. 1719 - 1725
Main Authors Shofinita, Dian, Langrish, Timothy A. G.
Format Journal Article
LanguageEnglish
Published Philadelphia Taylor & Francis 25.10.2016
Taylor & Francis Ltd
Subjects
Antioxidant
Antioxidants
Drying agents
extraction
Free radicals
pro-oxidant
spray drying
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Summary:Phenolic compounds have been reported to show both antioxidant and pro-oxidant properties. The effects of spray drying conditions on the balance between antioxidant and pro-oxidant properties of orange peel extract have been evaluated in this work. The inlet drying temperatures (ranging between 100 and 175°C) gave no significant effect on the redox recoveries. On the other hand, the main air flow rate (between 28 and 38 m 3 /h) and feed pump rate (between 4 and 7 mL/min) significantly affected the pro-/antioxidant recovery ratio. The ratios of pro-/antioxidant recovery were found to be between 1.00 and 1.13, and the pro-oxidant and antioxidant recoveries in this study were found to be between 87-96 and 83-93%, respectively.
ISSN:0737-3937
1532-2300
DOI:10.1080/07373937.2016.1175471