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A new way of valorizing biomaterials: The use of sunflower protein for α-tocopherol microencapsulation
- Source :
- Food Research International. 53:115-124
- Publication Year :
- 2013
- Publisher :
- Elsevier BV, 2013.
-
Abstract
- Biopolymer based microparticles were efficiently prepared from sunflower protein (SP) wall material and α-tocopherol (T) active core using a spray-drying technique. Protein enzymatic hydrolysis and/or N-acylation were carried out to make some structural modifications to the vegetable protein. Native and hydrolyzed SP were characterized by Asymmetrical Flow Field-Flow Fractionation (AsFlFFF). Results of AsFlFFF confirmed that size of proteinic macromolecules was influenced by degree of hydrolysis. The effect of protein modifications and the influence of wall/core ratio on both emulsions and microparticle properties were evaluated. Concerning emulsion properties, enzymatic hydrolysis involved a decrease in viscosity, whereas acylation did not significantly affect emulsion droplet size and viscosity. Microparticles obtained with hydrolyzed SP wall material showed lower retention efficiency (RE) than native SP microparticles (62–80% and 93% respectively). Conversely, acylation of both hydrolyzed SP and native SP allowed a higher RE to be reached (up to 100%). Increasing T concentration increased emulsion viscosity, emulsion droplet size and microparticle size, and enhanced RE. These results demonstrated the feasibility of highly loaded (up to 79.2% T) microparticles.
- Subjects :
- 0106 biological sciences
Chromatography
Chemistry
04 agricultural and veterinary sciences
Fractionation
engineering.material
040401 food science
01 natural sciences
Acylation
Hydrolysis
0404 agricultural biotechnology
010608 biotechnology
Spray drying
Enzymatic hydrolysis
Emulsion
engineering
Biopolymer
Microparticle
Food Science
Subjects
Details
- ISSN :
- 09639969
- Volume :
- 53
- Database :
- OpenAIRE
- Journal :
- Food Research International
- Accession number :
- edsair.doi...........e52a3a4ee93c86b8351797b023ebfc71