scholarly journals Determination of Antioxidant Capacity, Total Phenolic and Flavonoid Contents of Zahdi Date Seed and Their Effect on Beef Patties

2021 ◽  
Vol 11 (2) ◽  
pp. 137-149
Author(s):  
Nareman Adeem Shnaa Aljazy ◽  
Aum El-Basher Al-Mossawi ◽  
Ali Khudair Jaber Al Rikabi
Keyword(s):  
Antioxidant Capacity ◽  
Total Phenolic ◽  
Date Seed ◽  
Beef Patties ◽  
Phenolic And Flavonoid

scholarly journals Determination of antioxidant activity and phenolic compounds for basic standardization of Turkish propolis

2021 ◽  
Vol 64 (1) ◽  
Author(s):  
Aslı Özkök ◽  
Merve Keskin ◽  
Aslı Elif Tanuğur Samancı ◽  
Elif Yorulmaz Önder ◽  
Çiğdem Takma
Keyword(s):  
Antioxidant Capacity ◽  
Caffeic Acid ◽  
Caffeic Acid Phenethyl Ester ◽  
Total Phenolic ◽  
Scaling Analysis ◽  
Flavonoid Content ◽  
Multidimensional Scaling Analysis ◽  
Flavonoid Quercetin ◽  
Phenolic And Flavonoid

AbstractThis study aimed to determine the standard amount of antioxidant content and compounds of the propolis for the standardization of propolis. For this purpose, the total flavonoids, total phenolic, CUPRAC antioxidant capacity content and the diversity of phenolic and flavonoid components of these propolis samples were found by HPLC determined at the 23 propolis samples which were collected different regions of Turkey. Beside that, the similarities and differences of these 23 provinces to each other according to their antioxidant capacities were investigated by multidimensional scaling analysis. The total flavonoid content in the propolis samples were determined between 21.28 and 152.56 mg CE/g. The total phenolic content in the propolis samples was found between 34.53 mg and 259.4 mg GAE/g. CUPRAC antioxidant capacity of the propolis samples and antioxidant range was found from 95.35 to 710.43 mg TE/g. Also, 4 flavonoid [Quercetin (min.1.12–max.4.14 mg/g), Galangin (min.0.72–max.40.79 mg/g), Apigenin (min.1.07–max.17.35 mg/g), Pinocembrin (min.1.32–max.39.92 mg/g] and 6 phenolic acid [Caffeic acid (min.1.20–max.7.6 mg/g), p-Coumaric acid (min.1.26–max.4.47 mg/g), trans-Ferulic acid (min.1.28–max.4.92 mg/g), Protocatechuic acid (1.78 mg/g), trans-Cinnamic acid (min.1.05–max.3.83 mg/g), Caffeic Acid Phenethyl Ester (CAPE) (min.1.41–max.30.15 mg/g)] components were detected as mg/g, in different ratios in propolis samples collected from different regions. The feature of this study, so far, is to have the maximum number of samples representing the Turkish propolis, and so is thought to help to national and international propolis standard workings.

scholarly journals Antioxidant Capacity of Dark Red Corn � Biochemical Properties Coupled with Electrochemical Evaluation

2020 ◽  
Vol 71 (6) ◽  
pp. 31-41
Author(s):  
Maja Stevanovic ◽  
Sanja Stevanovic ◽  
Marija Mihailovic ◽  
Biljana Kiprovski ◽  
Goran Bekavac ◽  
...  
Keyword(s):  
Antioxidant Capacity ◽  
Antioxidant Properties ◽  
Biochemical Properties ◽  
Total Phenolic ◽  
Electrochemical Approach ◽  
High Antioxidant Activity ◽  
Corrosion Inhibition Efficiency ◽  
Cv Measurements ◽  
Phenolic And Flavonoid

Biochemistry coupled with electrochemical approach is employed in a fast, relatively simple, yet highly precise detection of a plant extract antioxidant properties. Antioxidant capacity of dark red corn grains was investigated electrochemically using cyclic voltammetry (CV) on glassy carbon electrode (GC). The linear polarization resistance (LPR) measurements were performed for examining the corrosion inhibitive behavior of polyphenolics on mild steel. The consistent positive correlation (r=0.99) was established between total phenolic and flavonoid contents obtained by CV measurements and spectrophotometric antioxidant assay (DPPH test). Both analyses confirm the high antioxidant activity of tested pigments. Determination of the corrosion inhibition efficiency revealed that the red corn pigments have anti-corrosion effect on mild steels.

Correlation of Total Phenolic and Flavonoid Contents of Brazilian Honeys with Colour and Antioxidant Capacity

2013 ◽  
Vol 17 (1) ◽  
pp. 65-76 ◽  
Author(s):  
Luiza D'oliveira Sant'ana ◽  
Aurelio Baird Buarque Ferreira ◽  
Maria Cristina Affonso Lorenzon ◽  
Ricardo Luis Louro Berbara ◽  
Rosane Nora Castro
Keyword(s):  
Antioxidant Capacity ◽  
Total Phenolic ◽  
Phenolic And Flavonoid

scholarly journals Establishing Relationship between Vitamins, Total Phenolic and Total Flavonoid Content and Antioxidant Activities in Various Honey Types

Molecules ◽  
2021 ◽  
Vol 26 (15) ◽  
pp. 4399
Author(s):  
Norhasnida Zawawi ◽  
Pei Juin Chong ◽  
Nurul Nadhirah Mohd Tom ◽  
Nurkhairina Solehah Saiful Anuar ◽  
Salma Malihah Mohammad ◽  
...  
Keyword(s):  
Antioxidant Capacity ◽  
Phenolic Acids ◽  
Antioxidant Activities ◽  
Natural Antioxidants ◽  
Total Phenolic ◽  
Flavonoid Content ◽  
Extrinsic Factors ◽  
Biochemical Compounds ◽  
Phenolic And Flavonoid

Honey is a well-known natural sweetener and is rich in natural antioxidants that prevent the occurrence of oxidative stress, which is responsible for many human diseases. Some of the biochemical compounds in honey that contribute to this property are vitamins and phenolic compounds such as phenolic acids and flavonoids. However, the extent to which these molecules contribute towards the antioxidant capacity in vitro is inconsistently reported, especially with the different analytical methods used, as well as other extrinsic factors that influence these molecules’ availability. Therefore, by reviewing recently published works correlating the vitamin, total phenolic, and flavonoid content in honey with its antioxidant activities in vitro, this paper will establish a relationship between these parameters. Based on the literature, vitamins do not contribute to honey’s antioxidant capacity; however, the content of phenolic acids and flavonoids has an impact on honey’s antioxidant activity.

Antimicrobial Potential and Determination of Total Phenolic and Flavonoid Content of Aerial Part Extracts of Ajuga bracteosa Wall ex. Benth

2018 ◽  
Vol 8 (3) ◽  
pp. 114-118
Author(s):  
Tabasum Ali ◽  
Amreen Naqash ◽  
Rukhsar Wadoo ◽  
Rumaisa Rashid ◽  
Ghulam Nabi Bader
Keyword(s):  
Aerial Part ◽  
Total Phenolic ◽  
Flavonoid Content ◽  
Antimicrobial Potential ◽  
Phenolic And Flavonoid
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