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Genetic variation of carotenoids, vitamin E and phenolic compounds in biofortified maize

By: Muzhingi, T.
Contributor(s): Miranda Piliado, A | Cabrera, M.L | Yeum, K.J | Tang, G | Palacios-Rojas, N.
Material type: materialTypeLabelArticlePublisher: New York: Wiley, 2017Subject(s): Genetic variation | Carotenoids | Vitamin E | Phenolic compounds | MaizeOnline resources: Access only for CIMMYT Staff In: Society of Chemical Industry Journal of the Science of Food and Agriculture v. 97, no. 3, p. 793-801Summary: BACKGROUND Biofortified maize is a good vehicle for provitamin A carotenoids for vitamin A deficient populations in developing countries but is also a source of vitamin E, tocochromanols and phenolic compounds which have antioxidant properties. This study analyzed by HPLC and Total Antioxidant Performance (TAP) assay the antioxidant variation and antioxidant activity of 36 improved maize hybrids and one common yellow maize hybrid. RESULTS The ranges of major carotenoids in provitamin A carotenoids biofortified maize were zeaxanthin (1.2-13.2 µg/g), β-cryptoxanthin (1.3-8.8 µg/g) and β-carotene (1.3-8.0 µg/g dry weight [DW]). The ranges of vitamin E compounds identified in provitamin A carotenoids biofortified maize were α-tocopherol (3.4-34.3 µg/g), γ-tocopherol (5.9-54.4 µg/g), α-tocotrienol (2.6-19.5 µg/g), and γ-tocotrienol (45.4 µg/g DW). The ranges of phenolic compounds were γ-oryzanol (0.0-0.8 mg/g), ferulic acid (0.4-3.6 mg/g) and p-coumaric acid (0.1-0.45 mg/g DW). There was significant correlation between α-tocopherol and cis isomers of β-carotene (P< 0.01). Tocotrienols were correlated with α-tocopherol and γ-oryzanol (P < 0.01). CONCLUSION Genotype was significant in determining the variation in β-cryptoxanthin, β-carotene, α-tocopherol and γ-tocopherol contents (P<0.01). Genotype by Environment (G x E) interaction was observed in γ-tocopherol contents (P< 0.01).
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Article CIMMYT Knowledge Center: John Woolston Library

Lic. Jose Juan Caballero Flores

 

CIMMYT Staff Publications Collection Available
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BACKGROUND Biofortified maize is a good vehicle for provitamin A carotenoids for vitamin A deficient populations in developing countries but is also a source of vitamin E, tocochromanols and phenolic compounds which have antioxidant properties. This study analyzed by HPLC and Total Antioxidant Performance (TAP) assay the antioxidant variation and antioxidant activity of 36 improved maize hybrids and one common yellow maize hybrid. RESULTS The ranges of major carotenoids in provitamin A carotenoids biofortified maize were zeaxanthin (1.2-13.2 µg/g), β-cryptoxanthin (1.3-8.8 µg/g) and β-carotene (1.3-8.0 µg/g dry weight [DW]). The ranges of vitamin E compounds identified in provitamin A carotenoids biofortified maize were α-tocopherol (3.4-34.3 µg/g), γ-tocopherol (5.9-54.4 µg/g), α-tocotrienol (2.6-19.5 µg/g), and γ-tocotrienol (45.4 µg/g DW). The ranges of phenolic compounds were γ-oryzanol (0.0-0.8 mg/g), ferulic acid (0.4-3.6 mg/g) and p-coumaric acid (0.1-0.45 mg/g DW). There was significant correlation between α-tocopherol and cis isomers of β-carotene (P< 0.01). Tocotrienols were correlated with α-tocopherol and γ-oryzanol (P < 0.01). CONCLUSION Genotype was significant in determining the variation in β-cryptoxanthin, β-carotene, α-tocopherol and γ-tocopherol contents (P<0.01). Genotype by Environment (G x E) interaction was observed in γ-tocopherol contents (P< 0.01).

Global Maize Program

Text in english

CIMMYT Informa: 1970 (May 31, 2016)

INT2691

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