Use of Novel Drying Technologies to Improve the Retention of Infused Olive Leaf Polyphenols
- Santacatalina Bonet, Juan Vicente
- Ahmad-Qasem Mateo, Margarita Hussam
- Barrajón-Catalán, E.
- Micol, Vicente
- García Pérez, José Vicente
- Cárcel Carrión, Juan Andrés
Publication date
January 2015
DOI Publisher
Informa UK Limited Language
EnglishAbstract
The infusion of phenolic extracts in dried fruits constitutes an interesting means of improving their nutritional content. However, drying can affect the further process of impregnation. In this work, different drying treatments (air temperature and ultrasound application) were applied to apple samples and impregnated with olive leaf extract. The application of ultrasound during drying did not significantly (p<0.05) affect the infusion capacity of samples, but the ultrasonically assisted dried samples showed a greater antioxidant capacity than those conventionally dried. The highest content of oleuropein and verbascoside was found in samples dried at low temperature using ultrasound.The authors acknowledge the financial support of...
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