Testing the Effects of Drying Methods on Willow Flavonoids, Tannins, and Salicylates

Abstract

In this study, we compared the effects of several preservation methods on the secondary phenolics of the mature leaves of purple willow (Salix purpurea L., Salicaceae) with results obtained with fresh leaf analyses. Conventional freeze-drying, in which the leaves were first frozen with liquid nitrogen and then placed in a freeze-dryer, produced substantial… (More)
DOI: 10.1023/A:1010358120482

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