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Physicochemical properties of water-soluble polysaccharides from black cumin seeds
- Source :
- International journal of biological macromolecules. 117
- Publication Year :
- 2018
-
Abstract
- In the present work, water-soluble polysaccharides were isolated from black cumin seeds. Polysaccharides were characterized by their carbohydrate composition, molecular weight, thermal stability and by FTIR, NMR spectroscopy and X-ray diffraction. The surface, the functional and the antioxidant properties of black cumin water-soluble polysaccharides (BCWSP) were also investigated. BCWSP consisted mainly of galacturonic acid (30.20%), glucuronic acid (17.66%) and neutral sugar (22.99%). BCWSP was composed of high peak molecular weight. The FTIR spectrum obtained for BCWSP showed two most important absorptions, at 1659 and 1085 cm−1, which corresponded to COO– of uronic acids and pyranose form, respectively. NMR spectroscopy data suggested that the BCWSP is probably a rhamnogalacturonan backbone with galactan and arabinan side chains. X-ray pattern revealed the semi-crystalline behavior of BCWSP. WHC and OHC of BCWSP were relatively high and varied with temperatures. The polysaccharide zeta potential was greatly affected by pH. Results indicated that the decrease of surface tension has influenced foaming and emulsifying capacities. The DPPH radical scavenging activity of the BCWSP was 63.25% at 1 mg/mL. The BCWSP displayed moderate reductive, β carotene bleaching and chelating abilities. Overall, our results suggested that BCWSP could be used as alternative additives in food and non-food products.
- Subjects :
- Chemical Phenomena
DPPH
medicine.medical_treatment
02 engineering and technology
Polysaccharide
Biochemistry
Antioxidants
chemistry.chemical_compound
0404 agricultural biotechnology
Picrates
Structural Biology
Polysaccharides
medicine
Nigella sativa
Sugar
Molecular Biology
chemistry.chemical_classification
Carotene
Biphenyl Compounds
Temperature
Water
04 agricultural and veterinary sciences
General Medicine
Nuclear magnetic resonance spectroscopy
Galactan
021001 nanoscience & nanotechnology
Glucuronic acid
beta Carotene
040401 food science
chemistry
Pyranose
Solubility
Seeds
0210 nano-technology
Oils
Nuclear chemistry
Subjects
Details
- ISSN :
- 18790003
- Volume :
- 117
- Database :
- OpenAIRE
- Journal :
- International journal of biological macromolecules
- Accession number :
- edsair.doi.dedup.....265938318d1bda9295d8149e487bbaf8