7,10-dihydroxy-8(E)-Octadecenoic acid is a hydroxy fatty acid and metabolite of oleic acid that is produced byP. aeruginosafrom vegetable oils.1It is active against the food-borne pathogenic bacteriaS. aureus,S. typhimurium,L. monocytogenes,B. subtilis, andE. coli(MIC50s = 31.3, 125, 125, 62.5, and 250 μg/ml, respectively), as well as the plant pathogenic bacteriaErwinia,R. solanacearum,C. glutamicum, andP. syringae(MIC90s = 125, 125, 250, and 500 μg/ml, respectively).2,1 1.Sohn, H.-R., Bae, J.-H., Hou, C.T., et al.Antibacterial activity of a 7,10-dihydroxy-8(E)-octadecenoic acid against plant pathogenic bacteriaEnzyme Microb. Technol.53(3)152-153(2013) 2.Chen, K.Y., Kim, I.H., Hou, C.T., et al.Monoacylglycerol of 7,10-dihydroxy-8(E)-octadecenoic acid enhances antibacterial activities against food-borne bacteriaJ. Agric. Food Chem.67(29)8191-8196(2019)