Abstract

ABSTRACT Steam-distilled essential oils from western juniper (Juniperus occidentalis) foliage and twigs were tested for activity against subterranean termites and fungi. Foliage residues were pretreated with dilute sulfuric acid and enzymatically treated to determine their digestibility. Essential oil recovery and sugar yields were higher for foliage than twigs. Foliage essential oil exhibited excellent antifungal and termiticidal activities at the concentrations tested. These results highlight the potential for integrating steam distillation of western juniper foliage to remove essential oil with enzymatic digestion of extraction residues. Additional studies to optimize distillation and pretreatment conditions for foliage are recommended.

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