Microencapsulation of grape seed oil by spray drying using whey protein and hawthorn pectin
Abstract Introduction: Grape seed oil (GSO) contains unsaturated fatty acids that make it susceptible to degradation, causing it to deteriorate. In this sense, microencapsulation in biopolymer matrices is a good alternative to protect it. Objective: To microencapsulate GSO by spray drying of emulsions stabilized with biopolymer complexes formed from whey protein concentrate (WPC) and hawthorn pectin (HP) from two different cultivars. Methodology: Emulsions were developed with different wall material: GSO ratios (2:1 and 3:1) and percentage of total solids (30 and 40 %). The wall materials were WPC-citrus pectin and WPC-HP from two cultivars (HP55 and HP100, with an esterification degree of 70.3 and 61 %, respectively). The factors evaluated were viscosity, mean surface diameter (d 3,2 ) and morphology of the emulsions, and d 3,2 , microencapsulation efficiency (MEE) and electron microscopy of the microcapsules. Results: The d 3,2 of the emulsions ranged from 1.45 to 2.54 μm, where EWPC-HP100,3:1 exhibited the smallest d 3,2 . These values were related to the type of pectin and were inversely proportional to the viscosity and solids content. The highest MEE was presented by MWPC-HP100,3:1 (71.29 %), which had the highest viscosity and the lowest d 3,2 in the emulsion. Study limitations: The behavior of only two hawthorn cultivars is presented. Originality: There are no reports of the use of HP biopolymer complexes from national cultivars and WPC as wall materials for the protection of bioactive materials. Conclusions: The use of novel biopolymers such as HP (HP55 and HP100) allowed obtaining microcapsules with adequate morphology and high MEE.
| Main Authors: | , , , |
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| Format: | Digital revista |
| Language: | English |
| Published: |
Universidad Autónoma Chapingo
2019
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| Online Access: | http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S2007-40262019000200127 |
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| Summary: | Abstract Introduction: Grape seed oil (GSO) contains unsaturated fatty acids that make it susceptible to degradation, causing it to deteriorate. In this sense, microencapsulation in biopolymer matrices is a good alternative to protect it. Objective: To microencapsulate GSO by spray drying of emulsions stabilized with biopolymer complexes formed from whey protein concentrate (WPC) and hawthorn pectin (HP) from two different cultivars. Methodology: Emulsions were developed with different wall material: GSO ratios (2:1 and 3:1) and percentage of total solids (30 and 40 %). The wall materials were WPC-citrus pectin and WPC-HP from two cultivars (HP55 and HP100, with an esterification degree of 70.3 and 61 %, respectively). The factors evaluated were viscosity, mean surface diameter (d 3,2 ) and morphology of the emulsions, and d 3,2 , microencapsulation efficiency (MEE) and electron microscopy of the microcapsules. Results: The d 3,2 of the emulsions ranged from 1.45 to 2.54 μm, where EWPC-HP100,3:1 exhibited the smallest d 3,2 . These values were related to the type of pectin and were inversely proportional to the viscosity and solids content. The highest MEE was presented by MWPC-HP100,3:1 (71.29 %), which had the highest viscosity and the lowest d 3,2 in the emulsion. Study limitations: The behavior of only two hawthorn cultivars is presented. Originality: There are no reports of the use of HP biopolymer complexes from national cultivars and WPC as wall materials for the protection of bioactive materials. Conclusions: The use of novel biopolymers such as HP (HP55 and HP100) allowed obtaining microcapsules with adequate morphology and high MEE. |
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