Influência dos processos de secagem sobre o teor de flavonoides e na atividade antioxidante dos extratos de Baccharis articulata (Lam.) Pers., Asteraceae

Borgo, Jackson; Xavier, Carlos Augusto; Moura, Dinara Jaqueline; Richter, Marc François; Suyenaga, Edna Sayuri

doi:10.1590/s0102-695x2010000100004

Cited by 13 publications

(6 citation statements)

References 18 publications

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“…The skin color varied between shades of yellow, for the granada variety, to red, for the wonderful variety, which was considerably larger than the fruits of the grana variety (Figure 2). At the end of the drying process, 30.46% of the plant material of the granada variety and 30.89% of the wonderful variety was recovered, which is in accordance with the literature, since after conditioning the fresh raw material for drying, the loss of humidity can reach 75% (Borgo et al, 2010). (2021), due to its advantages, such as low cost, low amount of energy used and simplicity, maceration is one of the most used methods for the extraction of phenolic compounds.…”

Section: Plant Materialssupporting

confidence: 90%

Atividade antimicrobiana do extrato, frações e punicalagina da casca do fruto de Punica granatum frente a isolados clínicos de vacas com mastite

Campos

Silva

Garcia

et al. 2021

RSD

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O objetivo deste estudo foi avaliar a atividade antimicrobiana do extrato, frações e punicalagina purificada da casca do fruto da romã, das variedades granada e wonderful, frente a Staphylococcus Coagulase Positivo (SCP) e Staphylococcus Coagulase Negativa (SCN), isoladas de vacas com mastite. As cascas dos frutos de romã foram secas em estufa, moídas e o extrato etanólico foi preparado por maceração e percolação. As frações foram obtidas por fracionamento líquido-líquido, e a purificação da punicalagina realizada em coluna cromatográfica preenchida com Diaion® HP-20. CLAE e RMN (1H e 13C -Acetona-d6) foram utilizados para identificação, quantificação e elucidação estrutural da punicalagina e a CIM (CLSI-M7A10) foi determinada para 23 isolados clínicos. O teor de punicalagina foi maior no extrato e frações da variedade granada, chegando a 81,5% na amostra de punicalagina purificada, que apresentou boa atividade antimicrobiana frente aos isolados clínicos, com ênfase para S. aureus e S. schleiferi schleiferi, onde a CIM foi de 31,75 μg/mL. Desta forma. a punicalagina foi definida como importante metabólito para o potencial antimicrobiano dos frutos de P. granatum contudo, o sinergismo dos metabolitos das frações acetato de etila e fração aquosa da variedade granada, teve considerável importância para a boa atividade antimicrobiana dessas frações, frente a 100% dos SCP e SCN. Assim, os resultados obtidos confirmam a atividade antimicrobiana dos metabólitos presentes na casca da romã, podendo fundamentar novas pesquisas de formulações farmacêuticas baseadas em P. granatum, como alternativa para o tratamento, prevenção e controle da mastite.

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Section: Plant Materialssupporting

confidence: 90%

Atividade antimicrobiana do extrato, frações e punicalagina da casca do fruto de Punica granatum frente a isolados clínicos de vacas com mastite

Campos

Silva

Garcia

et al. 2021

RSD

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“…Methods like convective drying are also low cost and simpler; and consequently a good alternative for farmers. Besides, oven drying method has an advantage over the natural drying by reducing the drying time and is one of the most commonly used methods for drying raw fruit and vegetables [17]. Moreover, under suitable temperatures, this method maintains the quality of the plant compounds [18].…”

Section: Convective Drying Processmentioning

confidence: 99%

Characterization of jamelão (Syzygium cumini(L.) Skeels) fruit peel powder for use as natural colorant

Santiago

Gouvêa

Peixoto

et al. 2015

Fruits

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Introduction. Tropical fruit have a good commercial potential as natural colorants; however, they are underexploited. Anthocyanins from jamelão (Syzygium cumini) fruit peel have been shown to be an alternative source of natural pigments for the food industry. Due to the toxicity of some synthetic colorants to the environment and human health, these artificial colorants are being replaced by natural pigments. This study was carried out to evaluate the properties and the technological feasibility of using the peel powder of the jamelão fruit as a colorant. Materials and methods. Over a 5 month period the anthocyanins from the jamelão fruit peel powder were tested for stability by HPLC every 30 days. Results and discussion. A loss of 36% of the total monomeric anthocyanins was noted at the end of the study. Despite this loss, the final product maintained its quality as a colorant, due to the initial high concentration of anthocyanin. Conclusion. Besides its intense and attractive color, the peel powder of jamelão also proved to be rich in dietary fibers and thus a good ingredient for low-calorie diets as well as having low lipid content. Keywords: Brazil / jambolão / jamun / Syzygium cumini / antioxidant / natural colorant Résumé-Caractérisation de la poudre de la peau des fruits du jamelonier (Syzygium cumini L. Skeels) pour une utilisation comme colorant naturel. Introduction. Les fruits tropicaux présentent en général un bon potentiel commercial comme colorants naturels ; et pourtant, peu d'entre eux sont exploités. Les anthocyanes de la peau du fruit du jamelonier (Syzygium cumini) passent pour être une source alternative de pigments naturels pour l'industrie alimentaire. En raison de la toxicité de certains colorants synthétiques pour l'environnement et la santé humaine, ceux-ci sont remplacés par des pigments naturels. La présente étude évalue les propriétés et la faisabilité technique de l'utilisation de la poudre de zeste du fruit du jamelonier comme colorant. Matériels et méthodes. Sur une période de 5 mois, la stabilité des anthocyanes de pelure en poudre des fruits du jamelonier a été testée par HPLC tous les 30 jours. Résultats et discussion. Une perte de 36 % du total des anthocyanes monomères a été notée à la fin de l'étude. Malgré cette perte, le produit final a maintenu sa qualité de colorant, en raison de la forte concentration initiale en anthocyanines. Conclusion. Outre sa couleur intense et attrayante, la poudre de pelure de fruit du jamelonier s'est également avérée être riche en fibres alimentaires, et donc un bon ingrédient pour les régimes hypocaloriques, d'autant plus qu'elle présente une faible teneur en lipides.

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“…ROS are continuously produced in cells as a consequence of biochemical oxidative reactions or external factors [43]. These include free radicals, as the superoxide anion (O2) and the hydroxyl radical (-OH), and free non-radical species, as H2O2 and singlet oxygen ( 1 O2) [44]. Oxidative stress induced by oxygen radicals promotes damage to essential biomolecules such as carbohydrates, proteins, amino acids, lipids, nucleic acids among other oxidative substances [45], thus contributing to aging and installation of chronic-degeneration 03040-5 diseases, such as cancer, CVD, arthritis, gastric ulcer, among others [46,47].…”

Section: Discussionmentioning

confidence: 99%

A Novel Approach Towards Green Synthesis of Nanodiamonds as Biocompatible Agents

Anand¹,

Saran²,

Chaudhary³

et al. 2021

J. Nano- Electron. Phys.

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The application of nanobiotechnology is an emerging area of nanoscience and nanotechnology. Nanodiamond has been a potent antibacterial, antifungal, antioxidant, and antiplatelet agent. In the present study, nanodiamonds were reduced by green synthesis and characterization was done through SEM, TEM, FTIR, and XRD. Further they were tested for their biological applications. The antimicrobial activity was investigated/studied/examined? through well diffusion method. The best activity was observed against Trichoderma reesei (16 mm) at 140 g/ml. The antioxidant activity was investigated through DPPH and FRAPS method. It was observed that the biologically reduced nanodiamonds reduce the Fe 3+ ions to Fe 2+ ions at 600 mM/l/g concentration. In DPPH assay, inhibitory concentration was found to be 4.58 g/ml. Further the antiplatelet activity was investigated by prothrombin time (PT) and activated partial thromboplastin time (APTT) assay, and it was observed that biologically reduced nanodiamonds have potent antiplatelet activity.

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Influência dos processos de secagem sobre o teor de flavonoides e na atividade antioxidante dos extratos de Baccharis articulata (Lam.) Pers., Asteraceae

Cited by 13 publications

References 18 publications

Atividade antimicrobiana do extrato, frações e punicalagina da casca do fruto de Punica granatum frente a isolados clínicos de vacas com mastite

Atividade antimicrobiana do extrato, frações e punicalagina da casca do fruto de Punica granatum frente a isolados clínicos de vacas com mastite

Characterization of jamelão (Syzygium cumini(L.) Skeels) fruit peel powder for use as natural colorant

A Novel Approach Towards Green Synthesis of Nanodiamonds as Biocompatible Agents

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