2011
DOI: 10.1590/s1516-05722011000200006
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Composição do óleo essencial de quatro espécies do gênero Plectranthus

Abstract: O gênero Plectranthus é considerado um dos mais ricos em óleos essenciais dentro da família Lamiaceae, compreendendo muitas espécies com propriedades medicinais. Algumas destas são conhecidas popularmente como boldo, as quais possuem semelhanças taxonômicas e diversas sinonímias, possuindo ações anti-dispépticas, analgésicas e digestivas. O objetivo deste estudo foi avaliar quantitativa e qualitativamente os óleos essenciais presentes nas folhas das espécies P. amboinicus, P. barbatus, P. grandis e P. neochilu… Show more

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Cited by 23 publications
(19 citation statements)
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“…One, a thymol-rich chemotype, has abundant concentrations of thymol (average of 67.3%, ranging from 35.0% to 94.3%) and relatively low concentrations of carvacrol (average 0.8%, range 0.0%-3.1%), for example, a sample from Rajahmundry, India, was found to have 94.3% thymol but only 1.2% carvacrol, 46 and a sample from Nainital, India, was composed of 83.4% thymol and 0.5% carvacrol. 47 In contrast, there is a chemotype that has relatively low concentrations of either carvacrol (average 10.8%, range 0.0%-29.3%) or thymol (average 6.1%, range 0.0%-21.7%), e.g., neither carvacrol nor thymol were detected in samples of P. amboinicus from Crato-Ceará, Brazil, 50 or Pelotas, Brazil, 51 while only low concentrations of carvacrol and thymol were found in samples from Cairo, Egypt. 53 Interestingly, the chemotype distribution seems to be randomly distributed around the world and not dependent on geographical location.…”
Section: Resultsmentioning
confidence: 99%
“…One, a thymol-rich chemotype, has abundant concentrations of thymol (average of 67.3%, ranging from 35.0% to 94.3%) and relatively low concentrations of carvacrol (average 0.8%, range 0.0%-3.1%), for example, a sample from Rajahmundry, India, was found to have 94.3% thymol but only 1.2% carvacrol, 46 and a sample from Nainital, India, was composed of 83.4% thymol and 0.5% carvacrol. 47 In contrast, there is a chemotype that has relatively low concentrations of either carvacrol (average 10.8%, range 0.0%-29.3%) or thymol (average 6.1%, range 0.0%-21.7%), e.g., neither carvacrol nor thymol were detected in samples of P. amboinicus from Crato-Ceará, Brazil, 50 or Pelotas, Brazil, 51 while only low concentrations of carvacrol and thymol were found in samples from Cairo, Egypt. 53 Interestingly, the chemotype distribution seems to be randomly distributed around the world and not dependent on geographical location.…”
Section: Resultsmentioning
confidence: 99%
“…On the other hand, P. amboinicus L. yielded 0.15% essential oil, which 38.60% was germacrene-D as the major secondary metabolite (Table 2), a higher percentage than that described by Bandeira et al [17]. However, Nogueira et al [23] reports that variation of yield of oil essential and concentration of constituents can be caused by various environmental factors.…”
Section: Resultsmentioning
confidence: 87%
“…This species has a scientific synonymy: Coleus amboinicus Lour or Coleus aromaticus Benth [16] and is routinely used in culinary services, and as a phytotherapeutic product and as primary matter in the pharmaceutical industry [10]. Its constituents identified by chemical and phytochemical assays, include germacrene, thymol and carvacrol, have excellent antimicrobial [17], and anti-inflammatory [15] activities.…”
Section: Introductionmentioning
confidence: 99%
“…Dentre as plantas medicinais, destacam-se as do gênero Plectranthus, pertecente à família Lamiaceae, bastante utilizadas na medicina popular por suas propriedades antidispépticas, analgésicas e estimulantes da digestão (PASSARINHO-SOARES et al, 2006;BANDEIRA et al, 2011). As potencialidades terapêu-ticas dessas espécies demonstram necessidade de estudos em relação ao seu cultivo e suas respostas às condições ambientais impostas nos meios de produção.…”
Section: Introductionunclassified