Formulation of Multi-Functional Omega-3 Oil Rich Microcapsules by Spray Drying Methodology | ||
| Egyptian Journal of Chemistry | ||
| Article 38, Volume 63, Issue 12, December 2020, Pages 5117-5136 PDF (404.39 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ejchem.2020.43946.2891 | ||
| Authors | ||
| Said Hamed* 1; Kawther Elshafei2; Hoda El-Sayed2; Ghada Abo-Elwafa1; Sherine Afifi1; Hamdy Zahran1 | ||
| 1Fats and Oils Department, National Research Centre, El-Buhouth St., Dokki, Cairo, Egypt, Postal code 12622 | ||
| 2Dairy Science Department, National Research Centre, El-Buhouth St., Dokki, Cairo, Egypt, Postal code 12622 | ||
| Abstract | ||
| This work was proposed to prepare multi-functional omega-3 oil based microcapsules. Rosemary (Rosmarinus officianlis L.) extracts as potential active compounds were used to stabilize these omega-3 rich microcapsules against both oxidation and microbes. Solvents of different polarities as well as ultrasonic-assisted water extraction (UAE) technique were tested for preparing promising extracts. Results demonstrated that water extract showed the highest phenolic extract as well as highest radical scavenging activity (RSA %) even when compared with BHT as a reference synthetic antioxidant. However, the potency of ultrasonic-assisted water extract as a radical scavenger was greatly enhanced specifically at a temperature of 45C and 30 min extraction time. Regarding the antimicrobial activity, although giving highest total phenolics and RSA %, water extract had no antimicrobial activity against both Gram negative or Gram positive bacteria (at concentration range 0.25 –15 %) while methanol extract revealed inhibitory activity against all tested pathogens at concentration of 5 % or higher. Moreover, methanol extract didn’t affect the survivability of the beneficial bacteria of lactobacilli strains. Finally, according to the results the microcapsules prepared by spray drying method exhibited better protection of omega-3 rich oils and also the yogurt fortified with spray-dried fish oil capsules had higher score in sensory evaluation. | ||
| Keywords | ||
| Omeg-3 rich oils; rosemary extract- ultrasound assisted extraction - antioxidant activity- antimicrobial activity | ||
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