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Polyphenolic compounds derived from rosemary (Rosmarinus officinalis L.) have numerous biological effects, including antioxidant and antimicrobial ones. However, their application is limited because they degrade under different environmental conditions. Consequently, rosemary extract was microencapsulated in alginate using the drop technique to alleviate this problem. Research results showed that rosemary extract has a high total polyphenolic content (38.63±0.29 mg GAE/g DW), especially methyl-rosmarinate, rosmarinic acid, cirsimarin, carnosol, epigallocatechin, rosmadial. The extract shows important antioxidant activity-1216.46±2.42 mM Trolox/g DW and inhibitory effect against strains of Staphylococcus aureus, Geobacillus stearothermophilus, Bacillus cereus, Candida albicans, Enterococcus faecalis, Escherichia coli and Salmonella Abony. Microencapsulated rosemary extract was characterized by …