Renealmia L.f.: aspectos botânicos, ecológicos, farmacológicos e agronômicos

Abstract

e alimentício. Visando ressaltar a importância deste gênero como potencial fonte de recursos agroeconômicos apresenta-se esta revisão sobre aspectos botânicos, ecológicos, farmacológicos, e agronômicos. De um universo de 87 espécies formalmente inseridas em Renealmia, registrou-se indicação de uso popular para 18 destas. Em sua maior parte as indicações de uso estiveram associadas a R. alpinia, R. exaltata e R. guianensis englobando, principalmente, os usos ornamental, alimentício e medicinal. Dentre as 14 espécies com indicação de uso popular medicinal, registram-se pesquisas farmacológicas para apenas quatro: R. alpinia, R. exaltata, R. nicolaioides e R. thyrsoidea. Entretanto, estas pesquisas evidenciam um amplo espectro de bioatividade, com ênfase na ação anticancerígena e antiofídica, especialmente de R. alpinia. Apenas seis espécies foram avaliadas quanto a composição química (R. floribunda, R. guianensis, R. alpinia, R. chrysotricha, R. exaltata e R. nicolaioides), identificando-se perfil químico que corrobora a potencialidade anticancerígena e antiofídica para os representantes deste gênero. Evidenciou-se grande lacuna no que se refere ao conhecimento científico ou técnico para o cultivo de espécies de Renealmia. Isto pode se configurar num impedimento importante na utilização destas espécies como recurso econômico.Palavras-chave: pacová, planta alimentícia, planta medicinal, planta ornamental, Zingiberaceae.ABSTRACT: Renealmia L..f.: botanical, pharmacological and agronomical aspects. The Renealmia L.f. is a genus that belongs to the Zingiberaceae with several applications, including the ornamental, medicinal and food ones. Aiming to emphasize the importance of this genus as a potential agro-economic resource, a review of its botanical, pharmacological and agronomic aspects is presented. From 87 species formally inserted in the Renealmia, 20 were registered with popular uses. In general, these popular uses were associated with R. alpinia, R. exaltata and R. guianensis, mainly including the ornamental, nourishing and medicinal uses. Among 14 species with indication of popular medicinal use, pharmacological studies were registered for only four: R. alpinia, R. exaltata, R. nicolaioides and R. Thyrsoidea. However, these studies show a large bioactivity range, with emphasis in the anti-carcinogenic and antiophidic action, especially for R. alpinia. Only six species were analyzed in terms of chemical composition (R. floribunda, R. guianensis, R. alpinia, R. chrysotricha, R. exaltata and R. nicolaioides). Their chemical profiles corroborate the anti-carcinogenic potential for the representatives of this genus. There is a great scientific or technical gap on the cultivation of Renealmia species. This can be an important limiting factor in the use of these species as economical resource.

Phenolic compounds from the rhizome of Renealmia nicolaioides Loes.: a new diarylheptanoid

“…Flavonoid 4 was isolated from the rhizome of R. nicolaioides. Other flavonoids have also been isolated from the roots of R. nicolaioides (Gu et al 2002), the leaves of R. thyrsoidea, R. cernua and R. alpinia (Cabanillas et al 2014, Gilli et al 2014, Gómez-Betancur et al 2014, 2015, and from the rhizome of R. thyrsoidea (Cabanillas et al 2014). Flavonoids are used as chemosystematic markers for the Zingiberaceae (lima and Kaplan 2010), and are commonly found among its genera.…”

“…In Brazil, the genus is represented by 21 species distributed throughout several regions and phytogeographical domains of the country including Amazonia, Caatinga, Cerrado, Atlantic Forest, Pampa, and the Pantanal (maas and maas 2015). Some species of Renealmia are used for medicinal purposes, with anticancer activity and snakebite treatment being the most notable (Negrelle 2015).…”

“…Phytochemical investigations have been conducted with species of Renealmia and have revealed the presence of terpenes, flavonoids and diarylheptanoids (luz et al 1984, Ramiandrasoa et al 1986, lognay et al 1991, Zhou et al 1997, Yang et al 1999, Kaplan et al 2000, Sekiguchi et al 2001, Gu et al 2002, maia et al 2007 An Acad Bras Cienc (2019) 91(1) e20180312 2 | 7 Cabanillas et al 2014, Gilli et al 2014, Gómez-Betancur et al 2014, 2015, Noriega et al 2016). Flavonoids isolated from roots of R. nicolaioides induced quinone reductase enzyme phase II, which acts in the protective mechanism against tumor action in hepatocytes (Gu et al 2002).…”

Optimization of a novel Renealmia ligulata (Zingiberaceae) essential oil extraction method through microwave-assisted hydrodistillation

“…Within this family, several species of the Renealmia genus, native to the Amazon, are frequently employed as medicines by indigenous peoples. For instance, the Kichwa in Ecuador, use these plants to treat colds, as analgesics for bone and muscle pain, and to counteract snake bite symptoms [2].…”

Evaluation of Phenolic Compounds in Rhizomes of Three Renealmia L. f. Species: Quantification, Antioxidant Activity and Histolocalization

“…8 Most of these species are used as ornamental, medicinal and/or food. 9 Anatomical and histochemical studies detected phenolic compounds were in the cortical region and central cylinder in rhizomes of ten species of Zingiberaceae. 20 Some studies involving the identification of phenolic compounds in the rhizomes and the antioxidant activity of different extracts have been performed for the Zingiberaceae family, but more has included Renealmia species.…”