Vitamin A equivalence of the ß-carotene in ß-carotene–biofortified maize porridge consumed by women  

Oleh:

Shanshan Li ; Nugroho, Angela ; Rocheford, Torbert ; White, Wendy S.

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: The American Journal of Clinical Nutrition vol. 92 no. 05 (Nov. 2010), page 1105-1112 .
Topik: VITAMINS; Minerals; Phytochemicals
Fulltext: Am J Clin Nutr-2010-Li-1105-12.pdf (206.91KB)

Ketersediaan

Perpustakaan FK Nomor Panggil: A07.K.2010.02 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

Background: ß-Carotene–biofortified maize is being developed through plant breeding as a sustainable agronomic approach to alleviate vitamin A deficiency. Objective: Our objective was to quantify the vitamin A equivalence of the ß-carotene in ß-carotene–biofortified maize based on consumption of a single serving of maize porridge. Design: Six healthy women each consumed three 250-g portions of maize porridge as follows: 1) ß-carotene–biofortified maize porridge containing 527 µg (0.98 µmol) total ß-carotene, 2) white maize porridge with a ß-carotene reference dose containing 595 µg (1.11 µmol) added ß-carotene, and 3) white maize porridge with a vitamin A reference dose containing 286 µg retinol activity equivelent (1.00 µmol) added retinyl palmitate. Each portion contained 8.0 g added sunflower oil. The porridges were consumed in random order separated by =2 wk. Blood samples were collected over 9 h. Retinyl palmitate was analyzed in plasma triacylglycerol–rich lipoprotein (TRL) fractions by HPLC with coulometric array electrochemical detection. Results: Mean (±SD) areas under the curve for retinyl palmitate in the TRL fractions (nmol · h) were 24.0 ± 9.4, 89.7 ± 34.7, and 80.1 ± 24.8 after ingestion of the ß-carotene–biofortified maize porridge, the white maize porridge with the ß-carotene reference dose, and the white maize porridge with the vitamin A reference dose, respectively. On average, 6.48 ± 3.51 µg (mean ± SD) of the ß-carotene in ß-carotene–biofortified maize porridge and 2.34 ± 1.61 µg of the ß-carotene in the reference dose were each equivalent to 1 µg retinol. Conclusion: ß-Carotene in biofortified maize has good bioavailability as a plant source of vitamin A.

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