Daily Consumption of Orange-Fleshed Sweet Potato for 60 Days Increased Plasma beta-Carotene Concentration but Did Not Increase Total Body Vitamin A Pool Size in Bangladeshi Women

作者：Jamil Kazi M; Brown Kenneth H; Jamil Maleka; Peerson Janet M; Keenan Alison H; Newman John W; Haskell Marjorie J^*

来源：Journal of Nutrition, 2012, 142(10): 1896-1902.

DOI：10.3945/jn.112.164830

We assessed the effect of daily consumption of orange-fleshed sweet potatoes (OFSP), with or without added fat, on the vitamin A (VA) status of Bangladeshi women with low initial VA status. Women (n = 30/group) received one of the following for 6 d/wk over 10 wk: 1)0 mu g retinol activity equivalents (RAE)/d as boiled white-fleshed sweet potatoes (WFSP) and a corn oil capsule, 2) 600 mu g RAE/d as boiled OFSP and a corn oil capsule, 3) fried OFSP and a corn oil capsule, or 4) boiled WFSP and a retinyl palmitate capsule in addition to their home diets. Plasma concentrations of retinol and beta-carotene and total body VA pool size were assessed before and after the 60-d intervention. Initial and final plasma retinol concentrations (mean +/- SD) were 0.75 +/- 0.18 mu mol/L and 0.84 +/- 0.19 mu mol/L, respectively (P = 0.31); final means did not differ by group. Initial and final plasma beta-carotene concentrations were 0.10 +/- 00 mu mol/L and 0.18 +/- 0.09 mu mol/L, respectively (P < 0.0001); final mean plasma beta-carotene concentrations were higher in groups that received OFSP (P < 0.0001), and final mean plasma beta-carotene was marginally higher in the group that received fried OFSP compared with boiled OFSP (P = 0.07). Initial and final total body VA pool sizes were 0.060 +/- 0.047 mmol and 0.091 +/- 0.070 mmol, respectively (P = 0.05, n = 110) and did not differ by group. Despite an increase in plasma beta-carotene concentration, the impact of OFSP on VA status appears to be limited in Bangladeshi women residing in a resource-poor community. J. Nutr. 142: 1896-1902, 2012.

• 出版日期2012-10