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The objective of this study was to establish the chromatographic fingerprints of the essential oil (EO) from  Stellera chamaejasme  flowers collected from various natural sites by gas chromatography (GC) combined with chemometric methods. The EO was obtained by hydrodistillation, and its chemical composition was analyzed by gas chromatography−mass spectrometry (GC−MS). Most components were identified as ketones and the relatively high-content components were fitone (38.973%),  n -hentriacontane (5.807%), myristic acid (4.944%) and phytol (3.988%). In addition, the repellent activities of the EO from  S. chamaejasme  flowers and its four main chemical compounds were evaluated against three stored product pests ( Tribolium castaneum ,  Lasioderma serricorne ,  Liposcelis bostrychophila ) for the first time. In this work, the EO and the four chemical compounds showed a repellent effect against three storage pests after 2 and 4 h exposure. The experimental method and repellent activity of  S. chamaejasme  flower EO could provide a basis for the development of botanical pesticide and the utilization of the rich plant resources of  S. chamaejasme  in the future.

molecules/molecules online/molecules annual

Study on Gas Chromatographic Fingerprint of Essential Oil from Stellera chamaejasme Flowers and Its Repellent Activities against Three Stored Product Insects