scholarly journals Potential anthelmintic effect of Capparis spinosa (Capparidaceae) as related to its polyphenolic content and antioxidant activity

2016 ◽  
Vol 61 (No. 6) ◽  
pp. 308-316 ◽  
Author(s):  
H. Akkari ◽  
B. chir F ◽  
S. Hajaji ◽  
M. Rekik ◽  
E. Sebai ◽  
...  
Chemosensors ◽  
2020 ◽  
Vol 8 (3) ◽  
pp. 74
Author(s):  
Iulia Gabriela David ◽  
Dana Elena Popa ◽  
Mihaela Buleandră ◽  
Mihaela Carmen Cheregi

Rosmarinic acid (RA) is an important bioactive phenolic acid with significant biochemical activities, including the antioxidant one. It is widely found in plants of the families Lamiaceae and Boraginaceae and has many uses in the food, pharmaceutical and cosmetics industries. RA is an electroactive species owing to the presence of the two catechol groups in its structure. Due to their inherent characteristics, such as sensitivity, selectivity, ease of operation and not too high costs, electrochemical methods of analysis are interesting tools for the assessment of redox-active compounds. Moreover, there is a good correlation between the redox potential of the analyte and its capability to donate electrons and, consequently, its antioxidant activity. Therefore, this paper presents a detailed overview of the electrochemical (bio)sensors and methods, in both stationary and dynamic systems, applied for RA investigation under different aspects. These comprise its antioxidant activity, its interaction with biological important molecules and the quantification of RA or total polyphenolic content in different samples.


2022 ◽  
Vol 293 ◽  
pp. 110646
Author(s):  
Mar Grimalt ◽  
Francisca Hernández ◽  
Pilar Legua ◽  
Asunción Amorós ◽  
María Soledad Almansa

Author(s):  
Hattem Mekky ◽  
Samah El Sohafy ◽  
Rasha Abu El-khair ◽  
Amr El Hawiet

Objective: The present study was designed to study the effect of supplementing Silybum marianum cultures with different combinations and concentrations of growth regulators on the total phenolic content and the antioxidant activity of the produced cultures.Methods: The total polyphenolic content of 23 extracts of calli was calculated as µg of gallic acid/mg of dry weight extract (DWE) using Folin–Ciocalteu reagent. The antioxidant activity was calculated as trolox equivalent antioxidant capacity using 1,1-Diphenyl-2-picryl-hydrazyl (DPPH) assay for extracts containing more than 10 µg gallic acid/mg DWE.Results: Most of the combinations showed an increase in the total polyphenolic concentration compared to the wild plant. However, cultures grown on media supplemented with combinations of benzyl aminopurine (BAP) and gebberellic acid (Gb), adenine (Ad) and kinetin (Kin), BAP and indole acetic acid (IAA) possessed the highest total polyphenolic contents 20.5, 13.09 and 12.15 µg gallic acid/mg DWE, respectively. However, only (BAP+Gb), (BAP+1-Naphthaleneacetic acid (NAA), IAA, kin and (BAP+Ad) showed a significant increase in the antioxidant activity calculated as trolox equivalent with 2.65, 1.56, 1.56, 1.35 and 1.22 folds increase over the wild plant, respectively.Conclusion: The results obtained clearly indicated that changing the growth regulator system of Silybum marianum cultures serves as an easy and reliable method for increasing the total phenolic content and the antioxidant activity of cultures.


2009 ◽  
Vol 116 (1) ◽  
pp. 29-33 ◽  
Author(s):  
Mónica Schwarz ◽  
MCarmen Rodríguez ◽  
Cristina Martínez ◽  
Virginia Bosquet ◽  
Dominico Guillén ◽  
...  

2013 ◽  
Vol 12 (47) ◽  
pp. 6643-6649 ◽  
Author(s):  
Aliyazicioglu Rezzan ◽  
Emre Eyupoglu Ozan ◽  
Sahin Huseyin ◽  
Yildiz Oktay ◽  
Baltas Nimet

2020 ◽  
Vol 69 (1-2) ◽  
pp. 5-11
Author(s):  
Dijana Kulačanin ◽  
Sandra Bijelić ◽  
Jovana Šućur ◽  
Borivoje Bogdanović ◽  
Sezai Ercisli ◽  
...  

SummaryThe beneficial effects of walnuts and walnut products on human health, due primarily to their rich polyphenolic content, have been appreciated as an empirical fact for centuries. The purpose of this study is to determine the polyphenolic contents of liqueurs made from the walnut selections ‘Rasna’ and ‘Sava’ and the walnut cultivar ‘Šampion’ (all harvested at three different times), as well as the polyphenolic contents of their green husks. The walnut liqueurs were prepared according to two traditional recipes using young walnut fruits. The highest antioxidant capacity was recorded in the liqueur made from the ‘Rasna’ walnut selection (89.94%), whereas the highest contents of phenols (83.28 mg GAE/g FW), flavonoids (0.83 mg QE/g FW) and proanthocyanidins were found in the liqueur made from the ‘Šampion’ cultivar (14.75 mg CE/g FW). The youngest ‘Rasna’ walnuts, harvested at the first experimental time point, exhibited the highest phenolic and tannin contents, whereas the highest flavonoid content was observed in the ‘Šampion’ cultivar. The biochemical results obtained indicate a decrease in the polyphenolic content of walnut fruits with their growth and development. Moreover, the polyphenolic profiles of the walnut liqueurs considered were found to be greatly affected by the method of preparation and the cultivar/selection of walnuts.


2011 ◽  
Vol 5 (5) ◽  
pp. 557-566 ◽  
Author(s):  
Chinedu Prosper An ◽  
Ijeoma Esiaba ◽  
Olusola Ajbaye ◽  
Ayobami O. Adesuyi

NFS Journal ◽  
2019 ◽  
Vol 16 ◽  
pp. 9-14 ◽  
Author(s):  
Roberta Passafiume ◽  
Anna Perrone ◽  
Giuseppe Sortino ◽  
Giuseppe Gianguzzi ◽  
Filippo Saletta ◽  
...  

2020 ◽  
Vol 85 (10) ◽  
pp. 3415-3422
Author(s):  
Maryam Keshavarzi ◽  
Gholamhassan Najafi ◽  
Hassan Ahmadi Gavlighi ◽  
Pourya Seyfi ◽  
Hamid Ghomi

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