Unusual chemical composition of a sample of Brazilian propolis, as assessed by analysis of a chloroform extract

Negri, Giuseppina; Salatino, Maria Luiza Faria; Salatino, Antônio

doi:10.1080/00218839.2003.11101092

Cited by 16 publications

(20 citation statements)

References 32 publications

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“…The result is the production of a propolis with very diverse properties and composition to the common pattern produced in the region. Results of composition of propolis from southeast Brazil, strikingly different from the typical green pattern (the propolis type prevalent in that region) have been reported by Negri et al (2003) and Teixeira et al (2006). In such cases, there seems to be an inverse correlation between the amounts of triterpenoids and those of phenolic compounds: typical green propolis contains predominantly phenolic substances, while diverging propolis types are predominantly triterpenoidal.…”

Section: Characterisation Of Compounds By Gc/eimsmentioning

confidence: 79%

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A new type of Brazilian propolis: Prenylated benzophenones in propolis from Amazon and effects against cariogenic bacteria

et al. 2011

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Section: Characterisation Of Compounds By Gc/eimsmentioning

confidence: 79%

“…For example, they have been reported frequently in Brazilian propolis (Negri, Salatino, & Salatino, 2003), sometimes as major constituents (Teixeira, Message, Negri, & Salatino, 2006). a-Amyrin has been reported at high contents in Venezuelan propolis (Trusheva , 2004).…”

Section: Characterisation Of Compounds By Gc/eimsmentioning

confidence: 97%

A new type of Brazilian propolis: Prenylated benzophenones in propolis from Amazon and effects against cariogenic bacteria

et al. 2011

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“…Dehydrocostus lactone (Table 2, compound 24; Fig. 7C), a sesquiterpene reported from an unusual sample of propolis (13), but never in a typical green propolis, was detected in the propolis sample and resin mass, although not in the shoot apices. This guaianolide lactone has been shown to exert several activities, among them antimycobacterial (14) and against Trypanosoma cruzi (15), an important cardiac parasite in rural areas of Brazil.…”

Section: Discussionmentioning

confidence: 94%

Plant Origin of Green Propolis: Bee Behavior, Plant Anatomy and Chemistry

Teixeira

Negri

Meira³

et al. 2004

Evidence-Based Complementary and Alternative Medicine

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Propolis, a honeybee product, has gained popularity as a food and alternative medicine. Its constituents have been shown to exert pharmacological effects, such as anti-microbial, anti-inflammatory and anticancer. Shoot apices of Baccharis dracunculifolia (alecrim plant, Asteraceae) have been pointed out as sources of resin for green propolis. The present work aimed (i) to observe the collecting behavior of bees, (ii) to test the efficacy of histological analysis in studies of propolis botanical origin and (iii) to compare the chemistries of alecrim apices, resin masses and green propolis. Bee behavior was observed, and resin and propolis were microscopically analyzed by inclusion in methacrylate. Ethanol extracts of shoot apices, resin and propolis were analyzed by gas chromatography/mass spectroscopy. Bees cut small fragments from alecrim apices, manipulate and place the resulting mass in the corbiculae. Fragments were detected in propolis and identified as alecrim vestiges by detection of alecrim structures. Prenylated and non-prenylated phenylpropanoids, terpenoids and compounds from other classes were identified. Compounds so far unreported for propolis were identified, including anthracene derivatives. Some compounds were found in propolis and resin mass, but not in shoot apices. Differences were detected between male and female apices and, among apices, resin and propolis. Alecrim apices are resin sources for green propolis. Chemical composition of alecrim apices seems to vary independently of season and phenology. Probably, green propolis composition is more complex and unpredictable than previously assumed.

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“…Extraction with pure water [101,119,120] (these extracts are likely to contain phenolic acids which are very soluble in water), methanol [62,63,100,121], hexane and acetone [122,123] and chloroform [124] has also been used.…”

Section: Sample Preparationmentioning

confidence: 99%

“…It is usually necessary, however, to derivatize the compounds to make them suitable for GC analysis. During the last 10 years GC has been extensively employed by several researchers [103][104][105]108,124,[134][135][136][137][138][139][140][141][142][143][144][145][146][147]]. An alternative is hightemperature, high-resolution gas chromatography (HT-HRGC) [107,112,122,123,148], which is an established technique for separating complex mixtures and identifying high-molecularweight compounds that do not elute when analysed on ordinary GC columns.…”

Section: Gas Chromatographymentioning

confidence: 99%