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ARS Home » Pacific West Area » Davis, California » Western Human Nutrition Research Center » Immunity and Disease Prevention Research » Research » Publications at this Location » Publication #280600

Research Project: Dietary Modulation of Immune Function and Oxidative Stress

Location: Immunity and Disease Prevention Research

Title: Vitamin A equivalence of carotenoids from high-carotenoid cassava in healthy well-nourished women [abstract]

item Lafrano, Michael
item Woodhouse, Leslie
item La Porte, Delphine
item Burri, Betty

Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 5/1/2012
Publication Date: 5/4/2012
Citation: Lafrano, M.R., Woodhouse, L.R., La Porte, D., Burri, B.J. 2012. Vitamin A equivalence of carotenoids from high-carotenoid cassava in healthy well-nourished women [abstract]. Meeting Abstract. UC Davis Graduate Group in Nutritional Biology Symposium. Abstract No. 12.

Interpretive Summary:

Technical Abstract: Biofortification of cassava with beta-carotene (BC) may be a solution to vitamin A (VA) deficiency in countries where it is a staple food. However, data regarding the bioavailability of BC in this food is limited. We compared absorption and VA equivalence of BC in triacylgyceride–rich lipoprotein (TRL) plasma fractions after ingestion of cassava meals. Ten women consumed 3 different porridges, each with 100 g of cassava: 1) Biofortified cassava (containing 2 mg BC) with 15 mL oil (BFO); 2) Biofortified cassava without oil (BF); and 3) white cassava (C) with oil and a 0.3 mg retinyl palmitate (RP) tracer. Porridges were consumed in random order with 2 wk washouts. Blood was collected 6 times from -0.5 – 9.5 h. TRLs were separated by ultracentrifugation and analyzed by HPLC with coulometric array electrodetection. Analysis showed increases in BC absorption and RP formation in TRL after both biofortified cassava meals, with BC and RP area-under-the-curves being highest in BFO. The VA equivalence (defined as nmol BC/nmol RP) of both biofortified cassavas was 4:1. This suggests that biofortified cassava can be a good source of BC and VA. Supported by HarvestPlus.