XXXX and antioxidant capacity of Georgia-grown Vidalia onions.

@entity3091 @entity15605 @entity22143 @entity3088 @entity6398 @entity5828 @entity3092 @entity3096
Vidalia onion varieties Nirvana, DPS 1032, Yellow 2025, King-Midas, and SBO 133 grown at Vidalia, Georgia, were analyzed for @entity3096 content. A high-performance liquid chromatographic (HPLC) method with photodiode array detection was used for quantification. Compounds were analyzed as aglycons after acid hydrolysis with 1.2 M @entity5828 . Identification of each compound was based on comparison of its retention time and UV spectra with those of pure commercial standards. Three major @entity3088 , @entity15605 , @entity3091 , and @entity3092 , were identified and quantified. @entity3092 was the major @entity3096 (7.70-46.32 mg/100 g fresh weight, FW) present in all varieties, followed by @entity3091 (2.77-4.13 mg/100 g FW). Minor quantities of @entity15605 (1.10-1.98 mg/100 g FW) were also detected. The total @entity6398 and @entity22143 equivalent antioxidant capacity (TEAC) ranged from 73.33 to 180.84 mg/100 g FW and 0.92-1.56 microM TEAC/g FW, respectively. A positive but weaker correlation was obtained for total @entity6398 versus antioxidant capacity. Nevertheless, a stronger correlation (r(2) = 0.34) was obtained between @entity3096 content versus antioxidant capacity. The data indicate that Vidalia onions are a rich source of @entity3092 , and they also contain @entity3091 and @entity15605 .
