Phytochemical profile, evaluation of antimicrobial and antioxidant activity in vitro of the hydroalcoholic extract of two species of the genus Cyperus (Cyperaceae)

Abstract Several factors contribute to the resistance of some pathogenic microorganisms and this fact requires the search for new therapeutic alternatives. The genus Cyperus (family Cyperaceae) groups species that present chemical compounds of pharmacological interest, mainly with antimicrobial action. Thus, the present work was carried out to investigate the antimicrobial activities, antioxidants and the phytochemical profile of Cyperus articulatus L. and Cyperus iria L. Hydroalcoholic extracts (1:1, v:v) of the aerial and underground parts of these species were used to analyze the total phenol content and to evaluate the in vitro antioxidant activity against the DPPH (2,2-diphenyl-1-picrylhydrazyl). The ethyl acetate and chloroform phases resulting from liquid-liquid partitioning of C. articulatus and C. iria extracts were evaluated in antimicrobial assays and subject to high performance liquid chromatography (HPLC-DAD) analysis. The chromatograms obtained by HPLC-DAD allowed us to identify four compounds: chlorogenic acid, catechin, quercetin, and quercitrin. The hydroalcoholic extracts of C. articulatus and C. iria showed a weak antioxidant activity with IC50 of 395.57 and 321.33 µg/mL (aerial parts), and 1,114.01 and 436.82 µg/mL (underground parts), respectively. Regarding antimicrobial activity, the chloroform phase of C. iria showed the best result at the concentration of only 31.2 µg/mL against the pathogens Candida albicans and Staphylococcus aureus. The ethyl acetate phases of the aerial parts of C. articulatus and C. iria did not show antimicrobial activity

Coeficientes técnicos de produção da priprioca (Cyperus articulatus L. ) em sistema orgânico, na região de Belém (PA) / Technical coefficients of priprioca production (Cyperus articulatus L. ) in organic system at the region of Belém (PA)

Foram elaborados os coeficientes técnicos de produção de priprioca (Cyperus articulatus) em três áreas fornecedoras parceiras da Natura, situadas na região do entorno de Belém, Amazônia Oriental. Para elaboração dos coeficientes técnicos de produção de priprioca, os itens de custo e as atividades que compreendem o cultivo, a colheita e o beneficiamento foram levantados e classificados em: Insumos; Serviços; Equipamentos; e Outros. O detalhamento destas atividades e o valor dos itens foram obtidos e construídos in loco, juntamente com os agricultores. As informações utilizadas neste trabalho consideraram a produção de 1 tonelada de raiz de priprioca, cultivadas anualmente em sete canteiros de 60 m² (1,2 m largura x 50 m comprimento), espaçamento de 0,20 x 0,20 m, em sistema orgânico com rendimento médio de 2,5 kg m2 -1. Os resultados descrevem os materiais consumidos, o tempo de mão-de-obra para realização das operações e os custos, baseados na realidade local. Conclui-se com este trabalho que a elaboração do coeficiente técnico de produção auxilia o agricultor a estimar o custo de produção de uma determinada matéria prima e evidencia as atividades que podem contribuir no lucro como, por exemplo, as boas práticas de produção.

Were prepared the technical coefficients of priprioca (Cyperus articulatus) production in three areas suppliers partner of Natura, situated around Belem, Eastern Amazon. For preparation of technical coefficients of priprioca production, the cost items and activities that comprise the growing, harvesting and processing were collected and classified as: Inputs, Services, Equipment, and Others. The details of these activities and the value of the items were obtained and constructed in situ, together with the farmers. Information used in this study considered the production of one tonne of priprioca root cultivated annually in seven plots of 60 m² (1,2 m wide x 50 m length) 0,20 x 0,20 m, in an organic system average yield of 2,5 kg m2 -1. The results describe the materials consumed, the time of manpower to carry out the operations and costs, based on local realities. Were conclude with this work that the preparation of the technical coefficient production helps farmers to estimate the cost of production and highlights the activities that can contribute to profit, for example, good manufacturing practices.