Chemical composition and seasonal variability of the essential oils of leaves and morphological analysis of Hyptis carpinifolia

Antibacterial action of the essential oil from Cantinoa carpinifolia benth. Against Escherichia coli and Staphylococcus aureus strains

“…The moisture content of the fresh leaves of Cantinoa carpinifolia was 33%, and the extraction yield of the essential oil was 0.48% on a moisture‐free basis. Authors such as Sá et al obtained 77.05% moisture content when they studied the same species collected in Goiás, Brazil in March 2013, and the extraction yield was 2.0%. The differences found by the authors are justified by the edaphoclimatic factors, such as pluviometric incidence, because 2014 was the year with the driest season in Minas Gerais since the year 2000, a factor that may have contributed to the low moisture and essential oil contents of the species studied.…”

“…Sá et al evaluated the influence of seasonality on the chemical composition of the essential oil from Hyptis carpinifolia ( C carpinifolia ) and found β‐pinene (2.9%‐5.3%),(4.16%), prenopsan‐8‐ol (4.2%‐9.6%), β‐caryophyllene (4.4%‐10.0%), trans‐cadina ‐1(6),4‐diene (2.8%‐17.5%), and eucalyptol (39.6%‐61.8%), to be the main constituents, partially corroborating the results obtained in the present work. The differences in chemical composition are due to factors, such as climate, soil composition, availability of moisture, attack by pathogens, as well as the different chemotypes of the species in the synthesis of secondary metabolites, a fact described by Gobbo‐Neto & Lopes …”

“…Among its pharmacological activities, studies cite its analgesic, anthelmintic, insecticidal and antitumor properties. 24 Sá et al 12…”

“…Despite its use as a medicinal plant and its biological potential, few studies on the essential oil of this species exist. Sá et al evaluated the chemical composition and seasonal variability of the essential oils of leaves and morphological analysis of this species, whose botanical synonymy is Hyptis carpinifolia , and the major constituents found were 1,8‐cineole (39.6%‐61.8%), trans‐cadina‐1(6),4‐diene (2.8%‐17.5%), β‐caryophyllene (4.4%‐10.0%), prenopsan‐8‐ol (4.2%‐9.6%) and β‐pinene (2.9%‐5.3%). The authors pointed to a seasonal variability of chemical composition, because of the rainfall index.…”

“…10,11 Despite its use as a medicinal plant and its biological potential, few studies on the essential oil of this species exist. Sá et al 12 Thus, the aims of this study were to extract and chemically characterize the essential oil from Cantinoa carpinifolia Benth. and to evaluate its antibacterial potential against strains of Escherichia coli and Staphylococcus aureus.…”