Color, phenolic and flavonoid content, and antioxidant activity of honey from Roraima, Brazil
Jonierison Alves Pontis,Luiz Antonio Mendonça Alves da Costa,Silvio José Reis da Silva,Adriana Flach +3 more
Reads0
Chats0
TLDR
The total phenolic and flavonoid content, color, and antioxidant activity were evaluated from ten honey samples from Apis mellifera L. collected from Roraima State, Brazil as mentioned in this paper.Abstract:
The total phenolic and flavonoid content, color, and antioxidant activity were evaluated from ten honey samples from Apis mellifera L. collected from Roraima State, Brazil. The total phenolic content was determined using the Folin-Ciocalteu reagent and ranged from 250 to 548 mg gallic acid kg –1 of honey. The total flavonoid content was obtained using two methods: total flavones/flavonols were determined with aluminum chloride, and flavonones/dihydroflavonols were determined with 2,4-dinitrophenylhydrazine. The results ranged from 9 to 48.6 mg of quercetine kg –1 of honey and 1805 to 2606 mg of pinocembrin kg –1 of honey, respectively. Antioxidant activity was measured with 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavengers, and the results of the IC 50 ranged from 3.17 to 8.79 mg/mL. Statistical analysis demonstrated positive correlations between color intensity, flavone and flavonol content, and phenolic content and negative correlations with antioxidant capacity.read more
Citations
More filters
Journal ArticleDOI
Classification of Wild Honeys of Different Mesoregions from Paraná State, Brazil, by Principal Component Analysis
Michele Kuchla,Marcus D. M. Araújo,Angélica F. Soares,Sueli Pércio Quináia,Maria Lurdes Felsner +4 more
TL;DR: The results indicated that pH, electrical conductivity and HMF are key parameters to identify the geographical origin of wild honeys from South Centre, Southeast and West mesoregions suggesting that the producing regions have different climatic and topological conditions, great floral diversity and different honey processing types as discussed by the authors.
Journal Article
Antioxidant capacity and sugar content of honey from Blue Nile State, Sudan.
TL;DR: In this paper, the authors evaluated the antioxidant capacity of honey samples collected from Blue Nile State, Sudan by determining total phenolic content (TPC) and total flavonoids content(TFC).
Journal ArticleDOI
Microwave Assisted One-Pot Green Synthesis of Silver Nanoparticles Using Leaf Extracts from Vigna Unguiculate: Evaluation of Antioxidant and Antimicrobial Activities
B. R. Perera,M. Kandiah +1 more
TL;DR: In this article, cowpea leaf extracts were used for the on-pot green synthesis of silver nanoparticles to determine its antioxidant properties using phytochemical assays; total flavonoid content (TFC), total phenolic content(TPC), total antioxidant activity (TAC), and free radical scavenging assays, Ferric reducing antioxidant properties (FRAP), ABTS and DPPH.
Journal ArticleDOI
Bitki Çaylarına Bal İlavesinin Total Antioksidan Kapasitesine Etkisi
TL;DR: In this article, the anti-oksidan anti-agents are used to detect anti-poisoning agents in the environment, which is a serious problem in the Middle East.
Book ChapterDOI
The Effect of Concentration of Methanol as a Solvent on the Antioxidative Activity of Sage Extract
TL;DR: In this paper, the antioxidative activity of sage extract was tested, depending on the concentration of methanol as a solvent in the process of maceration with occasional mixing, and the total phenolic and flavonoid content in obtained sage extracts was determined spectrophotometrically.
References
More filters
Journal ArticleDOI
Estimation of total flavonoid content in propolis by two complementary colorimetric methods
TL;DR: In this article, two complementary colorimetric methods, aluminum chloride method and 2,4-dini trophenylhydrazine method, were used to determine the real content of total flavonoids in propolis.
Journal ArticleDOI
Screening of Brazilian plant extracts for antioxidant activity by the use of DPPH free radical method
Luciana Lopes Mensor,Fábio de Sousa Menezes,Gilda Guimarães Leitão,Alexandre da Silva Reis,Tereza Cristina dos Santos,Cintia S. Coube,Suzana G. Leitão +6 more
TL;DR: As a general rule the ethanol extracts of plants belonging to the Verbenaceae family showed lower EC50 values than the other plant extracts, among the partitions, the more polar ones (ethyl acetate and n‐butanol) are those that generally have higher antioxidant activity (AA).
Journal ArticleDOI
Determination of the total phenolic, flavonoid and proline contents in Burkina Fasan honey, as well as their radical scavenging activity.
TL;DR: In this paper, several honey samples (27) from Burkina Faso were analyzed to determine their total phenolic, flavonoid and proline contents as well as their radical scavenging activity.
Analytical, Nutritional and Clinical Methods Evaluation of the phenolic content, antioxidant activity and colour of Slovenian honey
TL;DR: The results of the study showed that total phenolic content, antioxidant activity, and color parameters differ widely among different honey types as discussed by the authors, and the relationship between the parameters analysed were found to be statistically significant (p < 0.05).
Journal ArticleDOI
Evaluation of the phenolic content, antioxidant activity and colour of Slovenian honey
TL;DR: The results of the study showed that total phenolic content, antioxidant activity, and color parameters differ widely among different honey types as mentioned in this paper, and the relationship between the parameters analysed were found to be statistically significant (p < 0.05).