Exudates used as medicine by the “caboclos river-dwellers” of the Unini River, AM, Brazil – classification based in their chemical composition

Lago, João Henrique G.; Tezoto, Jaqueline; Yazbek, P.B.; Cassas, Fernando; Santos, Juliana de Faria Lima; Rodrigues, Eliana

doi:10.1016/j.bjp.2016.03.001

Cited by 12 publications

(2 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[ 30 ] In some resins (I, II and V), carotenoids (possibly β‐carotene considering the band positions in the Raman spectrum) [ 9 ] were detected which, at least in part, can be associated with their reddish colour. Carotenoids, a class of mostly C40‐based lipophilic tetraterpenes, [ 31 ] play an enormous number of roles in plants, animals and humans, [ 32 ] but as far as the authors are aware, the presence of carotenoids in resins is not usual; although exudates are still used as medicine by local inhabitants [ 33 ] and carotenoids are known for their antioxidant properties, [ 31 ] it is not possible to ascribe a pharmacological use to the resins‐containing carotenoids here studied based on the information reported.…”

Section: Discussionmentioning

confidence: 99%

Non‐invasive and non‐destructive Raman spectroscopic characterization of some Brazilian ethnographic resins

Faria

Maier

Parera

et al. 2021

J Raman Spectroscopy

View full text Add to dashboard Cite

The chemical investigation of museum collection items can provide key information on the provenance and technical aspects involved in their production and, additionally, can help in the establishment of restoration and conservation strategies of rare or valuable assets. Natural organic materials are challenging because of their chemical complexity and expected degradation. In this work, eight ethnographic resins from different sites in the Amazon and central areas in Brazil were studied by FT-Raman spectroscopy aiming at the noninvasive and non-destructive identification of their chemical composition; chromatographic methods (Thin Layer Chromatography and Gas Chromatography-Mass Spectrometry-TLC and GC-MS, respectively) were used as destructive confirmatory techniques. The samples were classified into five groups, each one presenting a common set of spectroscopic features: diterpenoid resins with chemical composition similar to the Brazil copal in some cases with carotenoids in their composition as did the triterpenoid resins also identified. Additionally, two gums (polysaccharides) were detected, and two very dark samples only generated a thermal or a luminescent background (1064 and 632.8 nm excitation, respectively). Total ion current (TIC) chromatograms from these very dark samples only showed peaks assigned to fatty acids probably because the resinous compounds were not soluble in the solvent used in GC-MS analysis. These results show that resin-containing museum assets in the Brazilian ethnographic context can be studied directly by Raman spectroscopy, contributing to a better understand of the culture of indigenous peoples from resin provenance, uses and processing for example. The results will be used as a database to be compared with certified reference samples, when available.

show abstract

Section: Discussionmentioning

confidence: 99%

Non‐invasive and non‐destructive Raman spectroscopic characterization of some Brazilian ethnographic resins

Faria

Maier

Parera

et al. 2021

J Raman Spectroscopy

View full text Add to dashboard Cite

show abstract

“…These applications have been well documented in relation to rosin (tar) from pine resin (Coppen & Hone, 1995) by early European and Asian sailors (Langeheim, 2003). A parallel could undoubtedly be drawn to neotropical Burseraceae resins since they have been likewise employed for the same purposes (Le Cointe, 1947;Costa, 1975;Rizzini & Mors, 1995); although, depending on the species, such an assertion would be based on scarce ethnobotanical information (Pernet, 1972;Corrêa, 1984;Lago et al, 2016). Other important uses of resins by South America forest communities include the burning of crude breu to produce insect-repellent smoke (Frisk, 1995;Rhind, 2013) as well as the use of breu in applications for medicinal purposes that include, among others, stimulant and anti-septic activities (Costa, 1975;Corrêa, 1984).…”

Section: Introductionmentioning

confidence: 99%

Toward Establishing the Productive Chain for Triterpene-Based Amazonian Oleoresins as Valuable Non-Timber Forest Products

Siani¹,

Moraes²,

Veiga³

2017

OJF

View full text Add to dashboard Cite

In the Amazonian rainforest, many species of Burseraceae known locally as "breu" are explored for the medicinal and aromatic uses of their trunk exudates. This material also has a long-standing use by the forest communities in building and caulking boats as well as in the making of wooden utensils and general crafts. Breu are strongly aromatic due volatile terpenes in their composition that are separated from the crude resin by steam distillation. The remaining residue amorphous "hard resin" is primary used for application in woodworking. Despite the potential for application in paints, varnishes and odor fixatives, the commercialization of the hard resin has not surpassed the local market level. In order to achieve and establish a more valorized market for this Amazonian non-timber forest product, the existing and potential demands need to be estimated, a draft of the production chain needs to be drawn up and care needs to be taken to provide products of the highest possible quality. This study aimed to identify and organize the main issues necessary for the attainment of these goals and its value chain, and identify the technologies that would improve the quality of the Amazonian breu as a raw material. A review of the data available in the literature and the analytical techniques that could be applied to generate standards for the extraction, purification, and analysis of the hard resin fraction was made. Quality issues based on physicochemical standards might affect the productive chain by: i) helping to consolidate the appropriate methodologies for collecting and storing the raw material; ii) adding value and qualifying the primary improvement processes and iii) supporting the certification of the raw materials for commercialization. Potentiate this material to reach high-level markets might boost the production demand and improve the rain forest communities' income.

show abstract

The Essential Oils of the Burseraceae

DeCarlo

Dosoky

Satyal

et al. 2019

Essential Oil Research

View full text Add to dashboard Cite

Exudates used as medicine by the “caboclos river-dwellers” of the Unini River, AM, Brazil – classification based in their chemical composition

Cited by 12 publications

References 31 publications

Non‐invasive and non‐destructive Raman spectroscopic characterization of some Brazilian ethnographic resins

Non‐invasive and non‐destructive Raman spectroscopic characterization of some Brazilian ethnographic resins

Toward Establishing the Productive Chain for Triterpene-Based Amazonian Oleoresins as Valuable Non-Timber Forest Products

The Essential Oils of the Burseraceae

Contact Info

Product

Resources

About