Author(s): MARCONDES, A. M.; GAMA, P. E.; ANTONIASSI, R.; FONSECA, M. J. de O.; BIZZO, H. R.

Summary: The objective of this work was to compare the essential oil yield and quality from two hops (Humulus lupulus L., Cannabaceae) varieties, namely Comet and Triumph cultivated in the mountain area of the state of Rio de Janeiro. The samples consisted of dry cones, obtained with local producers. The essential oils were obtained by hydrodistillation in a Clevenger apparatus. Residual humidity content was determined by azeotropic distillation with a Dean-Stark apparatus. Oil composition was evaluated by gas chromatography with flame ionization and mass spectrometry detectors. For quantitation, four replicates were distilled and analyzed after the addition of an internal standards. Identification was based in mass spectra comparison with commercial libraries and calculation of linear retention indices. For the samples tested, the Comet variety yielded 2 times more essential oil, with 4.1%, while the Triumph yield was only 2.0% (dried basis). Comet oil was rich in myrcene (64.9%) and ?-caryophyllene (8.3%). The major compounds in Triumph oil were ?-humulene (41.7%), myrcene (28.5%) and ?-caryophyllene (11.5%). While the data from Triumph are in good agreement with literature, a higher yield for the Comet variety was recorded. For both varieties, it was verified a good adaptation of the hops to the mountain area near Rio de Janeiro.

Publication year: 2024

Types of publication: Abstract in annals or event proceedings

Unit: Embrapa Food Technology

Keywords: Cannabaceae, Comet, Cromatografia Gasosa, Gas chromatography, Humulus Lupulus, Humulus lupulus L, Lúpulo, Myrcene, Qualidade, Triumph, Óleo Essencial