Back to Search
Start Over
Pectin modified with phenolic acids: Evaluation of their emulsification properties, antioxidation activities, and antibacterial activities
- Source :
- International journal of biological macromolecules. 174
- Publication Year :
- 2020
-
Abstract
- Three phenolic acids including p-hydroxybenzoic acid (PHBA), 3,4-dihydroxybenzoic acid, (DHBA), and gallic acid (GA) were grafted onto native pectin (Na-Pe) through enzymatic method. Ultraviolet-visible spectrometry, Fourier transform infrared spectroscopy, and 1H NMR analyses were used to explore the reaction mechanism. Results indicated that the p-hydroxyl of the phenolic acids reacted with the methoxycarbonyl of pectin through transesterification, and a covalent connection was formed. The phenolic acid contents of PHBA modified pectin (Ph-Pe), DHBA modified pectin (Dh-Pe), and GA modified pectin (Ga-Pe) were 20.18%, 18.87%, and 20.32%, respectively. After acylation with phenolic acids, the 1,1-diphenyl-2-picryl hydrazine clearance of pectin changed from 7.68% (Na-Pe) to 6.88% (Ph-Pe), 40.80% (Dh-Pe), and 90.30% (Ga-Pe), whereas its inhibition ratio of pectin increased from 3.11% (Na-Pe) to 35.02% (Ph-Pe), 66.36% (Dh-Pe), and 77.89% (Ga-Pe). Moreover, compared with Na-Pe, modified pectins exhibited better emulsification properties and stronger antibacterial activities against both Escherichia coli and Staphylococcus aureus.
- Subjects :
- Reaction mechanism
Staphylococcus aureus
food.ingredient
Magnetic Resonance Spectroscopy
Pectin
Acylation
Parabens
02 engineering and technology
Microbial Sensitivity Tests
Biochemistry
03 medical and health sciences
chemistry.chemical_compound
food
Structural Biology
Gallic Acid
Spectroscopy, Fourier Transform Infrared
Escherichia coli
Hydroxybenzoates
Gallic acid
Fourier transform infrared spectroscopy
Molecular Biology
030304 developmental biology
0303 health sciences
Microbial Viability
Esterification
Chemistry
Sodium
General Medicine
Phenolic acid
Transesterification
021001 nanoscience & nanotechnology
Anti-Bacterial Agents
Covalent bond
Emulsifying Agents
Pectins
0210 nano-technology
Nuclear chemistry
Subjects
Details
- ISSN :
- 18790003
- Volume :
- 174
- Database :
- OpenAIRE
- Journal :
- International journal of biological macromolecules
- Accession number :
- edsair.doi.dedup.....c2014ec236ceef879e2abcae5bd83a9e