) A magnesium–aluminum layered double hydroxide coated on magnetic nanoparticles was synthesizedand used as a sorbent to extract some phenolic acids including p-hydroxy benzoic acid, caffeic acid,syringic acid, p-coumaric acid and ferulic acid from fruit juices. After extraction, the elution step wasperformed through dissolving double hydroxide layers containing the analytes by changing the solu-tion pH. The extracted phenolic acids were separated and quantified using high performance liquidchromatography-photodiode array detection. Experimental parameters such as sorbent amount, solu-tion pH, desorption solvent volume and extraction time were studied and optimized. The linearity rangeof the method was between 2 and 500 µg L−1with the determination coefficient (r2) higher than 0.991.Relative standard deviations for intra- and inter-day precision for the analytes at 100 µg L−1were in therange of 4.3–9.2% and 4.9–8.6%, respectively. Batch-to-batch reproducibility at 100 µg L−1concentrationlevel was in the range of 7.8–11% (n = 3). The limits of detection were between 0.44 and 1.3 µg L−1. Rela-tive recoveries higher than 81% with RSDs in the range of 4.2–9.7% were obtained in the analysis of fruitjuice samples.