Extraction, purification and structural characterization of a galactoglucomannan from the gabiroba fruit (Campomanesia xanthocarpa Berg), Myrtaceae family

Barbieri, Shayla Fernanda; Ruthes, Andréa Caroline; Petkowicz, Carmen Lúcia de Oliveira; Godoy, Rossana Catiê Bueno de; Sassaki, Guilherme L.; Santana-Filho, Arquimedes Paixão; Silveira, Joana Léa Meira

doi:10.1016/j.carbpol.2017.07.015

Cited by 41 publications

(15 citation statements)

References 39 publications

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“…The Myrtaceae family is globally distributed, consisting of about 145 genera and over 500 known species [28]. Many species belonging to the Eugenia and Syzygium genera have been used traditionally to treat different ailments such as diarrhoea, diabetes, reproductive problems, and respiratory conditions [29, 30].…”

Section: Introductionmentioning

confidence: 99%

Antibacterial and antibiofilm activity of acetone leaf extracts of nine under-investigated south African Eugenia and Syzygium (Myrtaceae) species and their selectivity indices

Famuyide

Aro

Fasina

et al. 2019

BMC Complement Altern Med

154

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Background Antimicrobial resistance (AMR) remains an important global health issue but the gap between AMR and development of new antimicrobials is increasing. Plant extracts may have good activity per se or may be sources of effective antimicrobial compounds which can act against planktonic and/or biofilms of pathogens. We determined the antimicrobial efficacy and cytotoxicity of some under-investigated plants from the Myrtaceae family endemic to South Africa. The ability of the plant extracts to inhibit or destroy pre-formed bacterial biofilms was also determined. Methods Based on previous preliminary in vitro screening and on chemotaxonomy, nine species from the Myrtaceae family were selected. The antimicrobial activity of the crude acetone leaf extracts was determined against six common nosocomial pathogens, namely: Gram-positive bacteria ( Bacillus cereus , Enterococcus faecalis , Staphylococcus aureus ), Gram-negative bacteria ( Escherichia coli , Pseudomonas aeruginosa , Salmonella Typhimurium) using a two-fold serial microdilution assay with p-iodonitrotetrazolium violet as growth indicator. The number of antimicrobial compounds present in extracts was determined by bioautography. Cytotoxicity of extracts was determined against Vero kidney cells using a colorimetric tetrazolium-based assay. The total antibacterial activity (TAA) in ml/g and selectivity index (LC 50 /MIC) of the plant extracts were calculated. A modified crystal violet assay was used to determine the antibiofilm activity of the extracts. Results Syzygium legatii , Syzygium masukuense , and Syzygium species A had the best activities against Gram-negative and Gram-positive bacteria (MIC) values ranging from 0.04–0.08 mg/ml. Eugenia erythrophylla had the best MIC (0.02 mg/ml) against Bacillus cereus . Many extracts had relatively low cytotoxicity (LC 50 > 20 μg/ml) leading to reasonable selectivity indices. Three leaf extracts ( Syzygium masukuense , Syzygium species A, and Eugenia natalitia ) were moderately cytotoxic (20 μg/ml < LC 50 < 100 μg/ml). The plant extracts had a good capacity to reduce biofilm formation and good to poor potential to destroy pre-formed biofilms. Conclusions The plant species examined in this study had varying degrees of antibacterial activity against bacterial planktonic and biofilm forms with some having good activity against both forms. Several of these selected species may be potential candidates for further investigation to isolate antimicrobial compounds and to determ...

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Section: Introductionmentioning

confidence: 99%

Antibacterial and antibiofilm activity of acetone leaf extracts of nine under-investigated south African Eugenia and Syzygium (Myrtaceae) species and their selectivity indices

Famuyide

Aro

Fasina

et al. 2019

BMC Complement Altern Med

154

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“…A guabiroba é um fruto nativo considerado funcional em razão às propriedades nutricionais derivadas de sua composição, como alto teor de carboidratos (7,8 a 10,2%), fibra alimentar (4,1 a 9,8%), proteína (1,0 a 1,1%) e lipídios (0,7 a 1,9%). O fruto possui ainda uma quantidade significativa de água (79,1 a 83,5%), vitamina C (826,26 mg g-1) e fenólicos totais (19,59 μg g-1), tornando um valioso aditivo antioxidante [14][15][16][17]. Diante disso, o seguinte trabalho tem como objetivo desenvolver filmes biodegradáveis comestíveis produzidas a partir de farinha de arroz, plastificado com glicerol, incorporado de guabiroba, e avaliar as propriedades de espessura, solubilidade em água e permeabilidade ao vapor de água.…”

Section: Introductionunclassified

Caracterização De Filmes De Farinha De Arroz Com Guabiroba

Silva¹,

Silveira²,

Helm³

et al. 2020

Anais Do SIMPROC

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Resumo-Diversos materiais são utilizados para a produção de embalagens na indústria alimentícia. Contudo, na atualidade tem se aumentado as preocupações ambientais, e é crescente o interesse por embalagens biodegradáveis derivadas de fontes renováveis. Neste sentido, este estudo tem como objetivo produzir e caracterizar filmes à base de farinha de arroz e guabiroba. Foram produzidos filmes com diferentes concentrações de guabiroba (0-20%) por meio da técnica de casting, e realizadas análises de espessura, solubilidade e permeabilidade ao vapor de água (PVA). Todas as formulações propostas apresentaram bons filmes, com espessuras entre 0,150 a 0,231 mm, solubilidade média de 20,54%, valor acima do filme controle (14,64%). A PVA das amostras contendo guabiroba também obtiveram um acréscimo quando comparada ao filme controle (0,53 g/m.h.Pa para 4,75, 3,25 e 4,88 g/m.h.Pa),exceto para amostra contendo maior quantidade de polpa que reduziu o valor (0,53 g/m.h.Pa para 0,31 g/m.h.Pa. Esses valores despertam o interesse na investigação da utilização da farinha de arroz e guabiroba como matéria-prima para filmes biodegradáveis. Palavras-chave: biodegradável, comestível, espessura, solubilidade, permeabilidade ao vapor de água.

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“…littoralis (D. Legrand) shows some different characteristic such as the green color attributed to the fruit when mature and their size (15 to 40 mm) (BIAVATTI et al, 2004). Campomanesia xanthocarpa (Berg) is one of the most popularly known and widespread species among the genus (BARBIERI et al, 2017). On the other hand, C. eugenioides is commonly confused with C. xanthocarpa because they have similar characteristics, but C. eugenioides is not so well known and studied.…”

Section: Introductionmentioning

confidence: 99%

NON-COMMERCIALLY EXPLORED Campomanesia spp. NATIVE FRUITS AS POTENTIAL SOURCE OF ANTIMICROBIAL COMPOUNDS

Verruck¹,

Junior²,

Fronza³

et al. 2020

Ciência, Tecnologia E Inovação: Do Campo À Mesa

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Campomanesia eugenioides, Campomanesia xanthocarpa (Berg) and Campomanesia xanthocarpa var. littoralis comprises non-commercially explored native fruits from Brazil. Considering the scarcity of studies on the native fruits characterization from Campomanesia spp., the aim of the present study was to determine the antibacterial effects of C. xanthocarpa (Berg), C. eugenioides and C. xanthocarpa var. littoralis agains 15 strains of food-borne pathogens. The antibacterial tests demonstrated a high antibacterial activity for some of the Gram-positive bacteria tested, i.e., Bacillus cereus, Bacillus subtilis, Listeria monocytogenes, and Staphylococcus aureus. It is noteworthy that C. xanthocarpa var. littoralis fruit extract was the better against a more substantial number of bacteria. Finally, it was possible to report that phenolic and flavonoids compounds present in C. eugenioides, C. xanthocarpa and C. xanthocarpa var. littoralis could be strongly associated with the antibacterial activity observed.

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Extraction, purification and structural characterization of a galactoglucomannan from the gabiroba fruit (Campomanesia xanthocarpa Berg), Myrtaceae family

Cited by 41 publications

References 39 publications

Antibacterial and antibiofilm activity of acetone leaf extracts of nine under-investigated south African Eugenia and Syzygium (Myrtaceae) species and their selectivity indices

Antibacterial and antibiofilm activity of acetone leaf extracts of nine under-investigated south African Eugenia and Syzygium (Myrtaceae) species and their selectivity indices

Caracterização De Filmes De Farinha De Arroz Com Guabiroba

NON-COMMERCIALLY EXPLORED Campomanesia spp. NATIVE FRUITS AS POTENTIAL SOURCE OF ANTIMICROBIAL COMPOUNDS

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