Comparison of Physical and Chemical Properties of Green and Brown Brazilian Propolis Collected in Minas Gerais, Brazil.

Chem Biodivers

Programa de Pós-graduação em Saúde e Nutrição, Escola de Nutrição, Universidade Federal de Ouro Preto. R. Dois, 607, Campus Morro do Cruzeiro. Ouro Preto, CEP, 35400-000, Minas Gerais, Brazil.

Published: June 2023


Category Ranking

98%

Total Visits

921

Avg Visit Duration

2 minutes

Citations

20

Article Abstract

Among the 13 types of propolis classified in Brazil according to their physicochemical properties, green propolis and brown propolis are the most commonly found and used. In this work, a comparison of the physicochemical properties of green and brown propolis produced in Minas Gerais, Brazil was performed according to the methodology established by the Brazilian legislation. And, the content of 9 bioactive compounds in the samples was determined by RP-HPLC. GrProp showed a higher content of pinocembrin, artepillin C and baccharin, and a higher quantity of total flavonoids, in comparison with BrwProp. The mechanical mass content in both types of propolis was above the limit established by legislation. However, the other physicochemical parameters were within the limits. The chemical composition, especially the flavonoid content and the free radical (DPPH) scavenger property confer to both types of propolis a promising pharmacological activity.

Download full-text PDF

Source
http://dx.doi.org/10.1002/cbdv.202300382DOI Listing

Publication Analysis

Top Keywords

properties green
12
types propolis
12
green brown
8
minas gerais
8
gerais brazil
8
physicochemical properties
8
brown propolis
8
propolis
7
comparison physical
4
physical chemical
4

Similar Publications

Photocatalytic cyclization reaction of 2-vinylarylamines with CFSONa and arylaldehydes to access 3-(2,2,2-trifluoroethyl)-3-indoles.

Chem Commun (Camb)

September 2025

College of Chemistry, Pingyuan Laboratory, Henan Key Laboratory of Chemical Biology and Organic Chemistry, State Key Laboratory of Coking Coal Resources Green Exploitation, Zhengzhou University, Zhengzhou 450052, P. R. China.

A visible-light-catalyzed three-component cyclization reaction of 2-vinylarylamines with CFSONa and arylaldehydes is developed to build a series of 3-(2,2,2-trifluoroethyl)-3-indoles. This protocol features mild reaction conditions using an 18 W blue LED as the light source at room temperature. The desired 3-indole products can be successfully transformed into valuable tetrahydroindole scaffolds through either reduction or cross-coupling reactions.

View Article and Find Full Text PDF

This study investigates the unique syneresis (self-shrinking) behavior of N-Terminally Fmoc-protected amino acid, Fmoc-hPhe-OH (Fmoc-homo-L-phenylalanine, abbreviated in this work as hF)-based hydrogel, and its potential in environmental remediation applications. Fmoc-hPhe-OH (hF) forms a hydrogel in 50 mM phosphate buffer (PB) of pH 7.4.

View Article and Find Full Text PDF

A Bimolecular Simultaneous Macrocyclization Strategy to Synthesize Cyclic Dinucleotide Analogues with Internucleoside Guanidinium Linkages.

J Org Chem

September 2025

Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, School of Chemistry and Chemical Engineering, Henan Norma

Internucleoside guanidinium linkages are excellent mimics of phosphodiesters and have been used to improve the properties of oligonucleotides. Herein we reported a step economic bimolecular simultaneous macrocyclization (BSM) protocol to prepare cyclic dinucleotide (CDN) analogues with guanidinium linkages. Compared with the 26 steps protocol reported in literature, the current method could provide CDN analogues with internucleoside guanidinium linkages in 9 steps, and the key intermediate prepared in the first 3 steps could be shared to prepare CDN analogues with different nucleobases.

View Article and Find Full Text PDF

From a physics perspective, DNA and RNA molecules are characterized as dynamic biological structures that exhibit vibrations across a range of time scales. To conduct a more accurate investigation of their dynamic properties, it is essential to consider the environmental conditions surrounding these molecules. A harmonic Hamiltonian that incorporates damping, along with the Green's function method, has been utilized to analyze the vibrational responses of viscous DNA and RNA strands.

View Article and Find Full Text PDF

In the modern era, polymyrcene, a sustainable polymer made from renewable resources, offers a potential path towards the advancement of green products. Here, we successfully created and characterized the first-ever all-bio-based composite films using cellulose nanocrystals (CNCs) made from agricultural waste, polylactic acid (PLA), and polymyrcene. Environmentally acceptable substitutes for traditional polymer composites have been made possible by incorporating CNCs into the PLA-Polymyrcene matrix, which produced materials with improved structural and functional qualities.

View Article and Find Full Text PDF