Abstract:The linden pollen to total pollen ratio in 16 batches of linden honey collected in Northeast China was determined.The total phenolic content in each batch of linden honey was determined by Folin-Ciocalteu method.The total antioxidant capacity of each batch of linden honey was determined by DPPH method，ABTS+method and FRAP method.The results showed that the content of linden pollen in linden honey ranged from 7.14% to 76.73%，which could be used for purity identification of linden honey.Among them，7 batches of linden honey could be judged as linden monofloral honey，and 9 batches were linden polyfloral honey.The total phenolic content of linden monofloral honey was between 174.64 μg/g to 222.82 μg/g in gallic acid，and linden polyfloral honey was between 223.73 μg/g to 329.18 μg/g in gallic acid.The IC50value of linden monofloral honey was between（46.61±10.91）g/L to（107.76±34.17）g/L，and the IC50value of linden polyfloral honey was between （24.72±6.89）g/L to （76.75±8.09）g/L.The ABTS+free radical clearance ability of linden monofloral honey was between （0.14±0.07）mmol/kg to（0.43±0.10）mmol/kg in Trolox，the ABTS+free radical clearance ability of linden polyfloral honey was between（0.25±0.01）mmol/kg to（0.56±0.04）mmol/kg in Trolox.The ferric ion reduction ability of linden monofloral honey was between（1.96 ± 0.08）mmol/kg to（2.82 ±0.08）mmol/kg in FeSO4，and the ferric ion reducing ability of linden polyfloral honey was between 2.08 ± 0.07 to 3.81±0.11 mmol/kg in FeSO4.The results showed that all batches of linden honeys showed antioxidant activity，and their antioxidant activity strongly correlated with the total phenol content，but not with the purity.