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Effect of Different Combinations of Emulsifier and Wall Materials on the Physical Properties of Spray-dried Microencapsulated Swida wilsoniana Oil

  • Received Date: 2019-08-10
    Accepted Date: 2019-10-20
    Fund Project:

    This work was supported by Jiangsu Province Biomass Energy and Materials Laboratory, China (No. JSBEM-S-201603) and National Key Research and Development Program of China (No. 2017YFD0400900).

  • Spray drying was used to produce microencapsulated Wilson Dogwood (Swida wilsoniana) oil. The influences of the emulsifier and wall materials on the encapsulation were studied in order to produce high quality encapsulated S. wilsoniana oil. The emulsions were prepared by using lecithin (L) and Tween 80 (T) with different hydrophilic-lipophilic balance. Results indicate that the stable emulsion was obtained using T and L as the compound emulsifier at a ratio of 4/6 (w/w). By virtue of the compound emulsifier (T/L 4/6), the microencapsulation efficiency (MEE) reached 91%, and the oil loading up to 35% were achieved. We also examined the influence of the wall materials on the microencapsulation of S. wilsoniana oil. All the three wall materials exhibited high MEE (>85%), and the highest MEE (95.20%) was obtained with sodium caseinate/lactose. All the S. wilsoniana oil encapsulated with the three wall materials exhibited nearly spherical microcapsules without pores or cracks-thus protecting the oil from oxygen.
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Effect of Different Combinations of Emulsifier and Wall Materials on the Physical Properties of Spray-dried Microencapsulated Swida wilsoniana Oil

  • a Institute of Chemical Industry of Forestry Products, CAF;Jiangsu Province Biomass Energy and Materials Laboratory;National Engineering Lab. for Biomass Chemical Utilization;Key and Lab. on Forest Chemical Engineering, SFA;Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210042, China;
  • b School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210000, China
Fund Project:  This work was supported by Jiangsu Province Biomass Energy and Materials Laboratory, China (No. JSBEM-S-201603) and National Key Research and Development Program of China (No. 2017YFD0400900).

Abstract: Spray drying was used to produce microencapsulated Wilson Dogwood (Swida wilsoniana) oil. The influences of the emulsifier and wall materials on the encapsulation were studied in order to produce high quality encapsulated S. wilsoniana oil. The emulsions were prepared by using lecithin (L) and Tween 80 (T) with different hydrophilic-lipophilic balance. Results indicate that the stable emulsion was obtained using T and L as the compound emulsifier at a ratio of 4/6 (w/w). By virtue of the compound emulsifier (T/L 4/6), the microencapsulation efficiency (MEE) reached 91%, and the oil loading up to 35% were achieved. We also examined the influence of the wall materials on the microencapsulation of S. wilsoniana oil. All the three wall materials exhibited high MEE (>85%), and the highest MEE (95.20%) was obtained with sodium caseinate/lactose. All the S. wilsoniana oil encapsulated with the three wall materials exhibited nearly spherical microcapsules without pores or cracks-thus protecting the oil from oxygen.

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