Polyphenol bio-accessibility and antioxidant activity of in vitro digested ultrasound-assisted Meghalayan cherry (Prunus nepalensis) pomace extract

2022 ◽  
Author(s):  
Piyush Kashyap ◽  
Charanjit Singh Riar ◽  
Navdeep Jindal
Keyword(s):  
Antioxidant Activity ◽  
Ultrasound Assisted

scholarly journals Phenolic Compounds from Psidium guajava (Linn.) Leaves: Effect of the Extraction-Assisted Method Upon Total Phenolics Content and Antioxidant Activity

2020 ◽  
Vol 11 (2) ◽  
pp. 9346-9357
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Compounds ◽  
Phenolic Content ◽  
Crosslinking Agent ◽  
Psidium Guajava ◽  
Total Phenolic ◽  
Vitro Assay ◽  
Ultrasound Assisted ◽  
Guava Leaves

The aim of this study was to investigate the influence of the extraction method on the dry extract yield of guava leaves, correlating the total phenolic content (TPC) with the antioxidant activity. The dry extracts were obtained from hydroethanolic (50 and 70%) extract using the ultrasound-assisted method. Folin-Ciocalteau reagent was used to determine the content of TPC. DPPH (2,2-diphenyl-1-picrylhydrazyl) in vitro assay was used to determine the ability to scavenge free radicals. The results analyses demonstrated that the ultrasound-assisted method produced a higher yield in both dry extracts (11%), in contrast to the conventional method. The 50% hydroethanolic solvent was more efficient in the extraction of bioactive compounds. Both extracts showed a positive correlation of phenolic content with antioxidant activity. The FTIR spectrograms showed changes in the chemical groups, as well as determining the aromaticity index of the extracts, indicating a higher aromatic prevalence to the solvent 50%, although it presented simpler phenolic structures. In conclusion, the results provide an important basis for the use of phenolic compounds extracted from guava leaves, not only due to the antioxidant activity exerted, however, for potential use as a crosslinking agent of sulfated and non-sulfated glycosaminoglycan (GAG).

In vitro antioxidant activity and tannin content of Echium italicum L.

Planta Medica ◽  
2010 ◽  
Vol 76 (12) ◽  
Author(s):  
N Niciforovic ◽  
S Solujic ◽  
V Mihailovic ◽  
D Pavlovic-Muratspahic
Keyword(s):  
Antioxidant Activity ◽  
Tannin Content ◽  
In Vitro Antioxidant Activity

In vitro cytotoxic and antioxidant activity of some Hypericum species belonging to drosanthe section

Planta Medica ◽  
2012 ◽  
Vol 78 (11) ◽  
Author(s):  
E Eroğlu Özkan ◽  
N Özsoy ◽  
G Özhan ◽  
A Mat
Keyword(s):  
Antioxidant Activity ◽  
Hypericum Species

In vitro Antimicrobial and Antioxidant Activity of Extracts from Six Chemotypes of Medicinal Cannabis

Planta Medica ◽  
2016 ◽  
Vol 81 (S 01) ◽  
pp. S1-S381
Author(s):  
A Frankova ◽  
A Janatova ◽  
J Tauchen ◽  
L Kokoska
Keyword(s):  
Antioxidant Activity ◽  
Medicinal Cannabis ◽  
Antimicrobial And Antioxidant Activity
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