Анотация: Sucrose esters are nontoxic and biodegradable compounds with a large scale application in food industry as emulsifiers and solubilisator in cosmet - ics, agriculture and pharmaceuticals. Sucrose esters composed of C6 - C12 fatty acids have desirable insecticidal properties against many soft-odied arthropod pests. Sucrose esters with saturated fatty acids (С10 to С18) and 10-unsaturated undecylenic acid have been synthesized. The obtained su crose esters were characterized by FT-IR spectroscopy. The antimicrobial activity of some esters of sucrose has been investigated. Sucrolaurate was characterized with well-pronounced antimicrobial activity against fungi Aspergillus and Penicillium, Gram-positive bacteria: Bacillus subtilis and Staphylococcus aureus. Unsaturated undecylenic ester of sucrose showed also very well antimicrobial activity against Candida albicans, exhibited inhibition activity against Gram-positive bacteria: Bacillus subtilis and Bacillus cereus, and Gram-negative E. coli, as also inhibited growth of Pseudomonas aeruginose, against which undecylenic acid was inactive. On the base of this investigation sucroundecylenic and sucrolaurate ester could be used as potential antimicrobial agent for protecting plants and foods against some microorganisms.