Influence of seasonal variation on phenolic content and in vitro antioxidant activity of Secondatia floribunda A. DC. (Apocynaceae)

Ribeiro, Daiany Alves; Camilo, Cicera Janaíne; Nonato, Carla de Fátima Alves; Rodrigues, Fabíola Fernandes Galvão; Menezes, Irwin Rose Alencar de; Ribeiro-Filho, Jaime; Xiao, Jianbo; Souza, Marta Maria de Almeida; Costa, José Galberto Martins da

doi:10.1016/j.foodchem.2020.126277

Cited by 45 publications

(23 citation statements)

References 34 publications

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“…Studies such as Gomes et al [55] showed a predominance of flavonoids during summer in Lippia alba leaves. A similar result was found by Ribeiro et al [1], where it was found that the highest concentration of total phenolic compounds in the inner bark of Secondatia floribunda A. DC. during the dry season.…”

Section: Principal Components Analysis (Pca)supporting

confidence: 89%

“…Seasonal variations of secondary metabolites produced by plants, both qualitatively and quantitatively, can occur throughout the year in response to modifications in plant environmental conditions, including climatic [1,2]. This variation can also modify the biological activity that plant extracts have, since samples of the same plant collected in different months will present, or not, some compounds, as well as their concentration can also be different, thus, the extract can even present different pharmacological properties throughout the year [3,4].…”

Section: Introductionmentioning

confidence: 99%

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Seasonal Variations of Polyphenols Content, Sun Protection Factor and Antioxidant Activity of Two Lamiaceae Species

et al. 2021

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Secondary metabolite production by plants is influenced by external environmental factors that can change depending on the seasons, which makes it important to know how the plant, through its metabolism, is able to adapt to these variations. Mentha x villosa and Plectranthus amboinicus present in their chemical composition polyphenols, and through previous studies, it has been seen that these two species present promising in vitro photoprotective activity. The aim of this study was to evaluate seasonal alterations in photoprotective and antioxidant activities and the influence of factors such as precipitation levels and sun radiation incidence. Thus, polyphenol quantification, cromatographics (HPLC-DAD) and multivariate (PCA) analyses of extracts of the two species through twelve months were done. It was observed that the best months for photoprotective and antioxidant activities were September for M. villosa and July for P. amboinicus (SPF = 14.79). It was possible to conclude that solar radiation more clearly influences the production of phenolics and the increase of SPF in M. villosa, in addition to favoring the antioxidant activity of the two species, while precipitation seems to have no influence.

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Section: Principal Components Analysis (Pca)supporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Seasonal Variations of Polyphenols Content, Sun Protection Factor and Antioxidant Activity of Two Lamiaceae Species

et al. 2021

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Section: Resultssupporting

confidence: 73%

“…In addition, the total amount of individual components in SCG extracts was higher than that of CS extracts. Our approach was also supported by some authors, who reported a positive relationship between the total bioactive components and the antioxidant properties [34][35][36]. In addition, the main compounds of coffee extracts, including caffeine and caffeoylquinic acid derivatives, have shown strong antioxidant activities in earlier reports [37][38][39][40][41].…”

Section: Antioxidant Capacitysupporting

confidence: 78%

Chemical Composition, Antioxidant and Enzyme Inhibitory Properties of Different Extracts Obtained from Spent Coffee Ground and Coffee Silverskin

Zengin

Sinan

Mahomoodally

et al. 2020

Foods

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In a world where an eco-friendlier approach is becoming more and more necessary, it is essential to reduce waste production and to reuse residues of the company’s supply chain. Coffee silverskin (CS) and spent coffee ground (SCG), two by-products of coffee production, are important sources of bioactive compounds and, for this, some authors have proposed their reuse in the nutraceutical, food, and cosmetic sector. However, their potential enzyme inhibitory properties have been poorly investigated. Hence, the objective of the current work was to study the enzymatic inhibitory activities against acetylcholinesterase, butyrylcholinesterase, α-amylase, α-glucosidase, and tyrosinase of different extracts of CS and SCG. Before these in vitro bioassays, the phytochemical composition of each extract was investigated via colorimetric assays and HPLC-MS/MS analysis. In addition, the antioxidant activities were evaluated by different chemical approaches. SCG extracts contained a higher content of bioactive compounds, notably the SCG EtOH:H2O extract was the richest in caffeine and possessed the highest antioxidant activities. The hydroalcoholic and methanolic extracts were shown to be the most active against all tested enzymes, while the water extracts displayed lower activity. Our results showed a weak correlation between bioactive compounds and enzyme inhibitory effects, proving inhibitory activities likely due to non-phenolic molecules such as alkaloids and terpenoids. Obtained findings could be a starting point to develop novel nutraceuticals from CS and SCG.

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“…23,24 DPPH free radical is extensively used for evaluating the scavenging activity of plant extracts. [25][26][27] This is due to the fact that DPPH free radical is sensitive enough to detect active compounds at low concentration. In Figure 3(A), the DPPH scavenging abilities increased with increasing concentration of SP extract.…”

Section: Antioxidant Property Of Extract Obtained By Solvothemal Extractionmentioning

confidence: 99%

Response surface methodology optimised solvothermal system enables an efficient extraction of echinacoside and oleuropein from Syringa pubescens Turcz

Chu

Yang

et al. 2021

Phytochemical Analysis

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Introduction: Syringa pubescens Turcz. was reported to be abundant in the Funiu Mountains of Henan Province and can be used to treat hepatitis and cirrhosis. In order to develop and utilise the resource, a fast and simple technique to extract bioactive compounds is needed.Objectives: Our aims were to provide an extraction technique of glycosides from S. pubescens and study the antioxidant activity of this material.Methods: Box-Behnken design (BBD) was employed with three factors at three levels. The process parameters such as ethanol concentration (X 1 ), temperature (X 2 ), and solvent-solid ratio (X 3 ) could significantly influence efficiency and yield of target compounds. High-performance liquid chromatography (HPLC) was used to determine the content of glycosides. DPPH (α,α-diphenyl-β-picrylhydrazyl), ABTS (2,2'-azino-bis (3-ethylbenzothiazoline-6-sulphonic acid) and reducing power were used to evaluate the antioxidant activity of S. pubescens extract. Results:The optimal parameters for the maximal extraction yield were obtained with ethanol concentration of 68%, temperature of 89 C, solvent-solid ratio of 46 mL/g, and time of 20 min. The S. pubescens extract showed strong antioxidant properties in vitro. Conclusion:The findings indicated the potential application of solvothermal extraction method to extract bioactive compounds from S. pubescens Turcz. Furthermore, the S. pubescens extract could be used as an important resource of antioxidant activity.

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Influence of seasonal variation on phenolic content and in vitro antioxidant activity of Secondatia floribunda A. DC. (Apocynaceae)

Cited by 45 publications

References 34 publications

Seasonal Variations of Polyphenols Content, Sun Protection Factor and Antioxidant Activity of Two Lamiaceae Species

Seasonal Variations of Polyphenols Content, Sun Protection Factor and Antioxidant Activity of Two Lamiaceae Species

Chemical Composition, Antioxidant and Enzyme Inhibitory Properties of Different Extracts Obtained from Spent Coffee Ground and Coffee Silverskin

Response surface methodology optimised solvothermal system enables an efficient extraction of echinacoside and oleuropein from Syringa pubescens Turcz

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