scholarly journals A Comparative Study of Three Brassicaceae Vegetables Grown in Canakkale: Determination of Total Phenolic Content and Antioxidant Activity of Pulp and Juice Samples of Radish (Raphanus sativus L.), Cabbage (Brassica oleracea L. var capitata L) and Cauliflower (Brassica oleracea L.)

2020 ◽  
pp. 30-38
Author(s):  
Ferah CÖMERT ÖNDER ◽  
Nuriye DOĞRULAR ◽  
Ecem GÜZDÜZALP ◽  
Sedef BARLAK ◽  
Mehmet AY
Keyword(s):  
Antioxidant Activity ◽  
Comparative Study ◽  
Brassica Oleracea ◽  
Total Phenolic Content ◽  
Raphanus Sativus ◽  
Phenolic Content ◽  
Total Phenolic ◽  
Raphanus Sativus L ◽  
Brassica Oleracea L

Determination of Carotenoids, Total Phenolic Content, and Antioxidant Activity of Arazá (Eugenia stipitataMcVaugh), an Amazonian Fruit

2012 ◽  
Vol 60 (18) ◽  
pp. 4709-4717 ◽  
Author(s):  
G. Astrid Garzón ◽  
Carlos-Eduardo Narváez-Cuenca ◽  
Rachel E. Kopec ◽  
Andrew M. Barry ◽  
Kenneth M. Riedl ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Total Phenolic Content ◽  
Phenolic Content ◽  
Total Phenolic

scholarly journals Determination of phenolic contents and antioxidant activity test of ethanol extract of Sirih merah (Piper crocatum Ruiz & Pav.) leaves using the DPPH method

2021 ◽  
Vol 13 (2) ◽  
pp. 137-142
Author(s):  
Kasta Gurning ◽  
◽  
Sifikal Lumbangaol ◽  
Risanti F. R. Situmorang ◽  
Saronom Silaban ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Total Phenolic Content ◽  
Phenolic Content ◽  
Ethanolic Extract ◽  
Ethanol Extract ◽  
Extraction Process ◽  
Total Phenolic ◽  
Betel Leaf ◽  
Dpph Method

The research objectives were to identify the secondary metabolite components, total phenolic content and determine the antioxidant activity of the ethanol extract of red betel leaf (Piper crocatum Ruiz & Pav.). The extraction process was carried out by materation using ethanol as a solvent. Determination of total phenolic content was carried out colorimetrically with Folin-Ciocalteu reagent measured at a maximum wavelength of 765 nm. Determination of antioxidant activity using the DPPH method measured by spectrophotometry at a maximum wavelength of 517 nm. The results of phytochemical screening of the ethanolic extract of red betel leaf contain secondary metabolites, including flavonoid, phenolic, tannin, alkaloids, steroids, and triterpenoids. The total phenolic content of the red betel leaf ethanol extract was 0.949±0.003 mg GAE/g d.w. and has antioxidant activity (IC50) 84,656 including strong category as an antioxidant. Keywords: Piper crocatum Ruiz & Pav., Antioxidant, Ethanol extract, Folin-Ciocalteu and DPPH

A paper-based device for simultaneous determination of antioxidant activity and total phenolic content in food samples

Talanta ◽  
2019 ◽  
Vol 198 ◽  
pp. 542-549 ◽  
Author(s):  
Chanoknan Puangbanlang ◽  
Kitima Sirivibulkovit ◽  
Duangjai Nacapricha ◽  
Yupaporn Sameenoi
Keyword(s):  
Antioxidant Activity ◽  
Simultaneous Determination ◽  
Total Phenolic Content ◽  
Phenolic Content ◽  
Food Samples ◽  
Total Phenolic

scholarly journals Characterization of Eucalyptus, Chestnut and Heather Honeys from Portugal Using Multi-Parameter Analysis and Chemo-Calculus

Foods ◽  
2018 ◽  
Vol 7 (12) ◽  
pp. 194 ◽  
Author(s):  
Ioannis Karabagias ◽  
Miguel Maia ◽  
Vassilios Karabagias ◽  
Ilias Gatzias ◽  
Anastasia Badeka
Keyword(s):  
Antioxidant Activity ◽  
Total Phenolic Content ◽  
Phenolic Content ◽  
Solid Phase ◽  
Parameter Analysis ◽  
Total Phenolic ◽  
Activity Parameter ◽  
In Vitro Antioxidant Activity

The present study was conducted to evaluate the quality and bio-functional properties of Portuguese honeys of different botanical and geographical origins. Quality parameter analyses included the determination of palynological (predominant, secondary, minor and isolated pollen percentage), physicochemical (°Brix, moisture content, pH, electrical conductivity, free acidity, total dissolved solids, salinity, vitamin C content and specific weight) including colour-metrics (CIELAB, Pfund and colour intensity determinations), along with volatile compounds identification using solid phase micro-extraction coupled to gas chromatography mass spectrometry. Bio-activity parameter analysis included the determination of in vitro antioxidant activity and total phenolic content using the 2,2-diphenyl-1-picryl-hydrazyl and Folin-Ciocalteu assays, respectively. Melissopalynological analysis showed that Portuguese honeys were classified as eucalyptus, chestnut and heather, recording significant variations (p < 0.05) among physicochemical, volatile and bio-activity parameter analyses according to both: botanical and geographical origin. Based on the multi-parameter analysis data Portuguese honeys could be characterized by a distinctive colour, a characteristic aroma, whereas conform to the European legislation relating to honey identity and quality. Specific attention should be given in the case of heather honey which showed the highest in vitro antioxidant activity and total phenolic content. Parameters that were also highly correlated using bivariate statistics.

Lab-on-a-disc for simultaneous determination of total phenolic content and antioxidant activity of beverage samples

Lab on a Chip ◽  
2016 ◽  
Vol 16 (17) ◽  
pp. 3268-3275 ◽  
Author(s):  
Apichai Phonchai ◽  
Yubin Kim ◽  
Rattikan Chantiwas ◽  
Yoon-Kyoung Cho
Keyword(s):  
Antioxidant Activity ◽  
Simultaneous Determination ◽  
Total Phenolic Content ◽  
Phenolic Content ◽  
Total Phenolic ◽  
Beverage Samples

This paper reports the simultaneous determination of TPC and AA of beverages using lab-on-a-disc.

scholarly journals The Influence of in Vitro Gastrointestinal Digestion of Brassica oleracea Florets on the Antioxidant Activity and Chlorophyll, Carotenoid and Phenolic Content

Antioxidants ◽  
2019 ◽  
Vol 8 (7) ◽  
pp. 212 ◽  
Author(s):  
Teodora Scrob ◽  
Anamaria Hosu ◽  
Claudia Cimpoiu
Keyword(s):  
Antioxidant Activity ◽  
Kinetic Model ◽  
Brassica Oleracea ◽  
Total Phenolic Content ◽  
Phenolic Content ◽  
Total Phenolic ◽  
Gastrointestinal Digestion ◽  
In Vitro Gastrointestinal Digestion ◽  
Intestinal Digestion

Brassica oleracea L. var. Italica is known to contain a wide variety of antioxidants and due to the protection against various diseases its consumption has been increasing over the years. Thus, knowledge of the changes that occur during the digestion process is of great interest. The aim of this study was to investigate the influence of in vitro gastrointestinal digestion of broccoli on antioxidant activity and on the chlorophyll, carotenoid and phenolic content. First, the ultrasound-assisted extraction of bioactive compounds was optimized and the kinetic model was evaluated. Then, the broccoli was subjected to a static simulated digestion. The antioxidant activity was monitored by ABTS [2,2’-azinobis-(3-ethylbenzothiazoline-6-sulfonate)] assay and the contents of target compounds were investigated by UV-Vis spectrophotometry and thin-layer chromatography. The optimum conditions were: solvent—ethanol; time—20 min and temperature—30 °C, and a second order kinetic model was found to describe the mechanism of extraction. The antioxidant activity and carotenoid, chlorophyll and total phenolic content was significantly decreased after simulated gastric and intestinal digestion. The gastric digestion considerably decreased carotenoid and chlorophyll content, meanwhile the intestinal digestion significantly decreased the total phenolic content (TPC). The antioxidant activity was equally affected by both gastric and intestinal digestion.

Sign in / Sign up

Export Citation Format

Share Document