Plant Growth Modulates Metabolites and Biological Activities in Retama raetam (Forssk.) Webb

Saada, Mariem; Falleh, Hanen; Catarino, Marcelo D.; Cardoso, Susana M.; Ksouri, Riadh

doi:10.3390/molecules23092177

Cited by 18 publications

(21 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Then, liquid/liquid partition of a part of the crude ethanol extract (20.00 g) was performed for three times using increasing polarity solvents ( n -hexane, chloroform, ethyl acetate and n -butanol); thus, a separation of the compounds was obtained based on the affinity with the solvent used [ 30 , 31 ]. The extraction yield of dry n -hexane (ScH), chloroform (ScC), ethyl acetate (ScEA), n -butanol (ScB) and water (ScW) fractions is reported in Figure 1 .…”

Section: Resultsmentioning

confidence: 99%

Antioxidant Activity and Phytochemical Characterization of Senecio clivicolus Wedd.

et al. 2018

View full text Add to dashboard Cite

Antioxidant phytochemicals play a key role in oxidative stress control and in the prevention of related disorders, such as premature aging, degenerative diseases, diabetes, and cancer. The aim of this study was to investigate the potential antioxidant activity and the phytochemical profile of Senecio clivicolus Wedd., a perennial shrub, belonging to the Asteraceae family. Despite the wide interest of this family, this specie has not been investigated yet. S. clivicolus aerial parts were extracted with 96% ethanol. Then, the ethanol extract was fractionated by liquid/liquid extraction using an increasing solvents polarity. Total polyphenol and terpenoid contents were measured. Moreover, the antioxidant activity was evaluated by six different complementary in vitro assays. The Relative Antioxidant Capacity Index (RACI) was used to compare data obtained by different tests. The sample showing the highest RACI was subjected to characterization and quantitation of its phenolic composition using LC-MS/MS analysis. The ethyl acetate fraction, investigated by LC-MS/MS analysis, showed 30 compounds, most of them are chlorogenic acid and flavonoid derivatives. To the best of our knowledge, this is the first report about the evaluation of antioxidant activity and phytochemical profile of S. clivicolus, underlying the importance of this species as a source of health-promoting phytochemicals.

show abstract

Section: Resultsmentioning

confidence: 99%

Antioxidant Activity and Phytochemical Characterization of Senecio clivicolus Wedd.

et al. 2018

View full text Add to dashboard Cite

show abstract

“…The antioxidant activity of extracts was measured in terms of radical-scavenging ability of radical ABTS· + , as previously described [ 53 ]. Several concentrations of extracts/standard (50 μL) were added to 250 µL of diluted ABTS· + solution.…”

Section: Methodsmentioning

confidence: 99%

Effect of Oven-Drying on the Recovery of Valuable Compounds from Ulva rigida, Gracilaria sp. and Fucus vesiculosus

et al. 2019

Self Cite

View full text Add to dashboard Cite

The effect of oven-drying at 25, 40 and 60 °C was evaluated on three macroalgae of relevance in Europe, namely Ulva rigida, Gracilaria sp. and Fucus vesiculosus, with respect to quality aspects, including their potential to be exploited as a source of valuable compounds. Notably, as compared to freeze-drying, oven-drying at 25 °C promoted the extraction of chlorophylls and carotenoids from U. rigida, as well as those of phycoerythrin and chlorophyll a from Gracilaria sp., while 40 °C favored the recovery of fucoxanthin and pheophytin a from F. vesiculosus. On the other hand, the use of oven-drying had a negative impact on the extraction of phenolic compounds from this alga, also diminishing the antioxidant activity of the resulting extracts. Instead, the impact of oven-drying of raw material on the recovery of specific polysaccharides differed among the macroalgae. While the amounts of ulvans and fucoidans obtained from macroalgae dried at higher temperatures tended to be superior, the recovery of agar was not affected with the drying temperatures applied to Gracilaria sp. The overall results showed that oven-drying might serve as a good alternative to stabilize Ulva rigida, Gracilaria sp. and Fucus vesiculosus, especially if extraction of pigments and polysaccharides is aimed, thought the appropriate temperature applied must be adapted for each macroalgae.

show abstract

“…The ABTS scavenging activity was determined by the method of Saada et al [ 33 ]. Trolox (between 0 and 0.2 mM) was used as a positive control and in the calibration curve.…”

Section: Methodsmentioning

confidence: 99%

Inclusion Complex of Resveratrol with γ-Cyclodextrin as a Functional Ingredient for Lemon Juices

Silva

Monteiro

Resende

et al. 2020

Foods

View full text Add to dashboard Cite

Microencapsulated resveratrol (RSV) is a pertinent ingredient in functional foods to be used in the prevention and management of cardiovascular diseases. Gamma-cyclodextrin (γ-CD) was evaluated for its RSV inclusion ability. Inclusion procedures comprised mixing equal concentration of an aqueous solution of γ-CD with an ethanol solution of RSV and freeze-drying to obtain a solid material. Solid-state characterization by vibrational spectroscopy, thermogravimetry, and powder X-ray diffraction (PXRD) confirmed the formation of the γ-CD·RSV complex in a ratio of 1:1. PXRD suggested that cyclodextrin molecules in the complex are stacked in infinite channels holding the RSV inside, with a wide inter-channel space where 14 water molecules are retained. Fresh lemon juices supplemented with 0.625 mg/mL of RSV in its free (RSV-juice) or complexed (γ-CD·RSV-juice) form were stored along 28 days under dark and room temperature or at 4 °C. Initially, the RSV level in γ-CD·RSV-juice was about nine times higher than in RSV-juice (43.1% and 4.8%, respectively), suggesting that the RSV complexation promoted its solubility in the lemon juice, a fact that was still noticed after 28 days of storage. Moreover, regardless the fact that the antioxidant capacity was similar among the juices, the loss of antiradical ABTS•+ capacity in γ-CD·RSV-juice was reduced compared to that of the RSV-juice. Overall, this study allowed concluding that γ-CD can serve as a carrier of RSV, promoting its solubility and eventually protecting its antioxidant stability in lemon juices for at least 28 days.

show abstract

Plant Growth Modulates Metabolites and Biological Activities in Retama raetam (Forssk.) Webb

Cited by 18 publications

References 49 publications

Antioxidant Activity and Phytochemical Characterization of Senecio clivicolus Wedd.

Antioxidant Activity and Phytochemical Characterization of Senecio clivicolus Wedd.

Effect of Oven-Drying on the Recovery of Valuable Compounds from Ulva rigida, Gracilaria sp. and Fucus vesiculosus

Inclusion Complex of Resveratrol with γ-Cyclodextrin as a Functional Ingredient for Lemon Juices

Contact Info

Product

Resources

About