Abstract:The essential components and antioxidant activities of three wild blueberry varieties from different production areas of Northeast China were compared. The anthocyanins of the three wild blueberry samples were analyzed by high-performance liquid chromatography with diode array detection coupled to mass spectrometry (HPLC-DAD-MS). The results showed 14 to 16 types of anthocyanins, mainly in monoglycoside form with a low rate of anthocyanin acetylation. There are five common anthocyanins in blueberry, and the delphinidin derivatives, petunidin derivatives, and malvidin derivatives dominate, accounting for 34.89~42.21%, 25.96~32.95%, and 22.77~31.17% of the total, respectively. Among the three wild blueberry varieties, Heilongjiang wild blueberry had a relatively low content of total soluble solids (TSS) and a relatively high content of titratable acid (TA), and is not suitable for fresh consumption. Jilin wild blueberry had the highest TSS, total phenolic, and total anthocyanin content, indicating that the Jilin wild blueberry is suitable for processing. Additionally, Jilin blueberry exhibited the highest levels of hydroxyl radicals (?OH) and 2,2-diphenyl-1-picrylhydrazyl (DPPH?), ?O2- scavenging rates, and ferric reducing power. This result might be related to the numerous types of monoglycosides and the low rate of anthocyanin acetylation in Jilin blueberry.
