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标题：Investigations on thermal degradationof phytochemicals from lavender extract
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作者：Daniela RADU (LUPOAE ; Gabriela RÂPEANU ; Gabriela Elena BAHRIM 等
期刊名称：Annals of the University Dunarea de Jos of Galati. Fascicle VI : Food Technology
印刷版ISSN：1843-5157
电子版ISSN：2068-259X
出版年度：2019
卷号：43
期号：2
页码：1-15
出版社：Galati University Press
摘要：The importance of lavender as a source of essential oils has been well recognized. This study reports the phytochemical profile of lavender extract in terms of chlorophylls, total carotenoids, polyphenols and flavonoids, related to antioxidant activity. The extract displayed a high polyphenolic and flavonoids content, with an antioxidant activity of 2.28±0.18 mMol Trolox/g D.W. The fractional conversion and first order kinetic models were found suitable for predicting the changes that occur in the selected phytochemicals. Kinetic and thermodynamic parameters were calculated confirming the irreversible degradation of phytochemicals. Both the temperature and duration of heating significantly impacted the content in bioactive compounds.
关键词：lavender; chlorophylls; carotenoids; thermal treatment; kinetic