scholarly journals Polyphenol Composition and (Bio)Activity of Berberis Species and Wild Strawberry from the Argentinean Patagonia

Molecules ◽  
2019 ◽  
Vol 24 (18) ◽  
pp. 3331 ◽  
Author(s):  
Melina F. Chamorro ◽  
Gabriela Reiner ◽  
Cristina Theoduloz ◽  
Ana Ladio ◽  
Guillermo Schmeda-Hirschmann ◽  
...  
Keyword(s):  
Phenolic Content ◽  
Diode Array ◽  
Tandem Mass ◽  
Polyphenol Content ◽  
Argentinean Patagonia ◽  
Wild Strawberry ◽  
Array Detection ◽  
Polyphenol Profile ◽  
In Vitro Antioxidant Activity

The Argentinean Patagonia berries Berberis microphylla, Berberis darwinii, and Fragaria chiloensis ssp. chiloensis f. patagonica were investigated for their polyphenol content and composition by means of liquid chromatography coupled to diode array detection and electrospray ionization tandem mass spectrometry. The in vitro antioxidant activity and inhibition of metabolic syndrome-associated enzymes (α-glucosidase, α-amylase, and lipase) of the fruit extracts was assessed. The most complex polyphenol profile was found in the Berberis samples, with 10 anthocyanins, 27 hydroxycinnamic acids, 3 proanthocyanidins, 2 flavan-3-ol, and 22 flavonols. Fragaria presented four anthocyanins, nine ellagitannins, two proanthocyanidin dimers, one flavan-3-ol, and five flavonols. The Berberis samples showed the best antioxidant capacity, while Fragaria displayed better activity against α-glucosidase and lipase. The phenolic content and composition of the Argentinean Patagonia berries was similar to that reported for Chilean samples but with some chemical differences between Eastern (Argentina) and Western (Chile) Patagonia. The data obtained supports the consumption of these berries as sources of beneficial polyphenols.

scholarly journals Photoprotection and Photostability of a New Lignin-Gelatin-Baccharis antioquensis-Based Hybrid Biomaterial

Antioxidants ◽  
2021 ◽  
Vol 10 (12) ◽  
pp. 1904
Author(s):  
Juan C. Mejía-Giraldo ◽  
Juan C. Scaiano ◽  
Cecilia Gallardo-Cabrera ◽  
Miguel A. Puertas-Mejía
Keyword(s):  
Phenolic Content ◽  
Methanolic Extract ◽  
Polyphenol Content ◽  
Protection Factor ◽  
Dry Extract ◽  
Natural Extract ◽  
Natural Extracts ◽  
Electrostatic Stability ◽  
Better Than

The aim of this study was to develop a new hybrid biomaterial that could photo-stabilize and improve the photoprotective capacity of a Baccharis antioquensis extract. Different combinations of lignin/gelatin/natural extract were applied to prepare hybrid biomaterial nanoparticles (NPs), which were then incorporated into an emulsion. The in vitro photoprotection and photostability were evaluated. The methanolic extract showed high phenolic content (646.4 ± 9.5 mg GAE/g dry extract) and a DPPH radical assay revealed that the antiradical capacity of the extract (0.13 to 0.05 g extract/mmol DPPH) was even better than that of BHT. The particle size of the hybrid biomaterial ranged from 100 to 255 nm; a polydispersity index (PdI) between 0.416 and 0.788 is suitable for topical use in dermocosmetic products. The loading capacity of the extract ranged from 27.0 to 44.5%, and the nanoparticles (NPs) showed electrostatic stability in accordance with the zeta potential value. We found that the formulation based on lignin: extract (1:1 ratio) and gelatin: lignin: extract (0.5:0.5:1 ratio) demonstrated photoprotection qualities with a sun protection factor (SPF) ranging from 9.4 to 22.6. In addition, all the hybrid NP-formulations were time-stable with %SPFeff and %UVAPFeff greater than 80% after exposure to 2 h of radiation. These results suggest that the hybrid biopolymer-natural extract improved the photoprotection and photostability properties, as well as the antiradical capacity, of the B. antioquensis extract, and may be useful for trapping high polyphenol content from natural extracts, with potential application in cosmeceutical formulations.

Total Phenolic Content and In vitro Antioxidant Activity of Winged Bean (Psophocarpus tetragonolobus)

2013 ◽  
Vol 12 (5) ◽  
pp. 416-422 ◽  
Author(s):  
R. Mohd Adzim Khalili ◽  
S. Emynur Shafekh ◽  
A.H. Norhayati ◽  
I. Mohd Fatahudin ◽  
R. Rahimah ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Total Phenolic Content ◽  
Phenolic Content ◽  
Winged Bean ◽  
Total Phenolic ◽  
Psophocarpus Tetragonolobus ◽  
In Vitro Antioxidant Activity
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