Flavonoids from acai (Euterpe oleracea Mart.) pulp and their antioxidant and anti-inflammatory activities

Kang, Jie; Xie, Cheng-Hui; Li, Zhimin; Nagarajan, Shanmugam; Schauss, Alexander G.; Wu, Tong; Wu, Xianli

doi:10.1016/j.foodchem.2011.03.011

Cited by 163 publications

(110 citation statements)

References 37 publications

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“…The antioxidant properties of açai have been previously described in the literature (Kuskoski et al, 2006;Kang et al, 2011;Gordon et al, 2012;Inácio et al, 2013). However, although incorporation of açai glycolic extracts into sunscreen emulsion did not increase SPF in vivo, this formulation may be effective as an antioxidant cosmetic product.…”

Section: Sun Protection Factor Study (Spf)mentioning

confidence: 80%

“…is a palm native to the Amazon. Its fruits are of economic importance in the Brazilian state of Pará and contain in addition to essential nutrients, anthocyanins, a class of polyphenols to which antioxidant properties have been attributed (Kuskoski et al, 2006;Kang et al, 2011;Gordon et al, 2012;Inácio et al, 2013). Anthocyanins are the predominant polyphenols and account for more than 90% of açai´s total polyphenolic contents (Pacheco-Palencia et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

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Development of O/W emulsions containing Euterpe oleracea extract and evaluation of photoprotective efficacy

Daher

Fontes

Rodrigues

et al. 2014

Braz. J. Pharm. Sci.

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Euterpe oleracea Mart. is a palm tree popularly known as açai, which is primarily found in northern Brazil. The açai's fruits contain anthocyanins, a class of polyphenols to which antioxidant properties have been attributed. The aim of this work was to develop O/W sunscreens emulsions containing açai glycolic extract (AGE) and to evaluate both their physical stability and photoprotective efficacy. Emulsions containing AGE and sunscreens were formulated using different types and concentrations of polymeric surfactant (acrylates/C 10-30 alkyl acrylate crosspolymer and sodium polyacrylate). The influence of two rheology modifiers (polyacrylamide (and) C13-14/isoparaffin (and) Laureth-7 and Carbomer) on the stability was also investigated. Physical stability was evaluated by preliminary and accelerated studies. Emulsions with 1.0% sodium polyacrylate were stable and exhibited non-newtonian pseudoplastic behavior and thixotropy. Photoprotective efficacy was evaluated by in vivo Sun Protection Factor (SPF) and determination of Protection Factor of UVA (PF-UVA). When AGE was added to the sunscreen emulsion, no significant increase in the in vivo SPF value was observed. The emulsion containing AGE showed PF-UVA = 14.97, 1.69 of the SPF/PF-UVA ratio and a critical wavelength value of 378 nm, and may therefore be considered a sunscreen with UVA and UVB protection. Euterpe oleracea Mart. é uma palmeira popularmente conhecida como açaí, encontrada no norte do Brasil. O fruto do açaí apresenta em sua composição antocianinas, uma classe de polifenóis à qual é atribuída propriedade antioxidante. Os objetivos desse trabalho foram desenvolver emulsões fotoprotetoras O/A contendo extrato glicólico de açaí (AGE), avaliar a estabilidade física e avaliar a eficácia fotoprotetora. Emulsões contendo AGE e filtros solares foram formuladas utilizando diferentes tipos e concentrações de tensoativo polimérico (acrilates/C 10-30 alquil acrilato polímero cruzado e polilacrilato sódico). A influência de dois modificadores reológicos (poliacrilamida (e) C13-14/isoparafina (e) Laureth-7 e Carbomer) na estabilidade foi avaliada. A estabilidade física das emulsões foi avaliada por meio de estudos de estabilidade preliminar e acelerada. Emulsões com 1,0% poliacrilato sódico foram estáveis, exibiram comportamento não-newtoniano pseudoplástico e tixotrópico. A eficácia fotoprotetora foi avaliada pelo teste in vivo de Fator de Proteção Solar (FPS) e pela determinação do Fator de Proteção UVA (FP-UVA). Quando adicionado o AGE na emulsão contendo filtros solares, não se observou aumento significativo no valor do FPS. A emulsão contendo o AGE apresentou FP-UVA=14,97, a razão FPS/ FP-UVA = 1,69 e o comprimento de onda crítico igual a 378 nm, podendo ser considerado um protetor solar com proteção UVA e UVB. Unitermos:Emulsão O/A/desenvolvimento. Euterpe oleracea/farmacognosia. Euterpe oleracea/extrato glicólico/eficácia fotoprotetora. Protetores Solares/desenvolvimento. Fator de Proteção Solar.

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Section: Sun Protection Factor Study (Spf)mentioning

confidence: 80%

Section: Introductionmentioning

confidence: 99%

Development of O/W emulsions containing Euterpe oleracea extract and evaluation of photoprotective efficacy

Daher

Fontes

Rodrigues

et al. 2014

Braz. J. Pharm. Sci.

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“…Previous studies reported that velutin isolated from acai (Euterpe oleracea Mart.) showed strong anti-inflammatory effect and antioxidant activity [10,12]. No previous work reported the antimicrobial activity of velutin, but similar flavonoid compounds such as apigenin, kaemferol, quercetin, rhamnazin and 5-hydroxy-7,4'-dimethoxy flavone isolated from Combretum erythrophyllum (Burch.)…”

Section: Resultsmentioning

confidence: 99%

Two Antibacterial Compounds: Velutin and 4- (Hydroxy (Oxiran-2-yl)Methyl)-2-Methoxyphenol from the Stem Bark of Drimys arfakensis Gibbs.

Santoso

Hernandez²,

Rodriguez³

et al. 2017

KLS

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Antimicrobial-guided fractionation and isolation of the bioactive compounds from the stem bark of Drimys arfakensis Gibbs. were carried out. Two antibacterial compounds were isolated. The sructures of the antibacterial compounds were elucidated by spectroscopic methods such as 1 H NMR, 13 C NMR, 2-D NMR, ESI-MS and EI-MS. Based on the spectroscopic data, the two antibacterial compounds were velutin, 1 and 4-(hydroxyl(oxiran-2-yl)methyl)-2-methoxyphenol, 2. Compound 1 exhibited low activity against methicillin-resistant Staphylococcus aureus (MRSA) (B-1823) with MIC value of 250 g ⋅ mL −1 , while compound 2 possesses strong activity against S. aureus (MRSA) (B-1823) with MIC value of 15.60 g ⋅ mL −1 .No activity of both compounds against Escherichia coli (B-1634) and Candida albicans (B-2219) was observed.

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“…The suppressive effect on benign prostate enlargement of saw palmetto berry, 12) the antioxidative and anti-inflammatory activities of the polyphenol-rich fraction of acai berry, 13) and the suppressive effect on liver damage of the fruit extract of Phenix sp. 14) have been reported.…”

Section: Suppressive Effects By Leaves Of the Dypsis Lutescens Palm Omentioning

confidence: 99%

Suppressive Effects by Leaves of theDypsis lutescensPalm on Fat Accumulation in 3T3-L1 Cells and Fat Absorption in Mice

Koyama

Miyata

Nishimura³

et al. 2012

Bioscience, Biotechnology, and Biochemistry

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Flavonoids from acai (Euterpe oleracea Mart.) pulp and their antioxidant and anti-inflammatory activities

Cited by 163 publications

References 37 publications

Development of O/W emulsions containing Euterpe oleracea extract and evaluation of photoprotective efficacy

Development of O/W emulsions containing Euterpe oleracea extract and evaluation of photoprotective efficacy

Two Antibacterial Compounds: Velutin and 4- (Hydroxy (Oxiran-2-yl)Methyl)-2-Methoxyphenol from the Stem Bark of Drimys arfakensis Gibbs.

Suppressive Effects by Leaves of theDypsis lutescensPalm on Fat Accumulation in 3T3-L1 Cells and Fat Absorption in Mice

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