Proximate nutritional composition and antioxidant properties of Oryza rufipogon, a wild rice collected from Malaysia compared to cultivated rice, MR219

Parviz Fasahat, Kharidah Muhammad, Aminah Abdullah, R Wickneswari V Ratnam

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19 Citations (Scopus)

Abstract

Wild rice (Oryza rufipogon L) is known as an important germplasm that has specific desirable attributes and a high genetic diversity. The physicochemical and antioxidant properties of O. rufipogon Griff. (acc. IRGC105491), a wild rice collected from Malaysia that was used in a breeding program and a QTL mapping study, were assessed to determine the rice's nutritional value compared with a commonly consumed rice cultivar MR219 (O. sativa subsp. indica). To identify and quantify the phenolic compounds in the rice extracts, Ultra Performance Liquid Chromatography (UPLC) coupled with a photodiode array detector (PDA) was applied. The results obtained were supported by a determination of the total phenolic compounds (TPC), 2,2-diphenyl-1-picrylhydrazyl (DPPH.) radical scavenging, tocopherols, tocotrienols, and the ferric reducing ability power (FRAP) of the respective extracts originating from the whole grain. The results indicated that O. rufipogon, irrespective of its poor appearance, contained high proximate nutritional composition and antioxidant properties. The grain of O. rufipogon consisted of 8.0% protein, 2.2% fat, and 25.0% amylose content all significantly higher than the ratios of MR219. Except for the percentage of inhibition DPPH? radical, which was statistically at par with MR219, the antioxidant activity of O. rufipogon was higher than that of MR219. The high antioxidant activity of O. rufipogon was supported by the presence of high tocochromanol content higher than MR219. Oryza rufipogon extracts were also the most effective in antioxidative reactions. This study demonstrated that wild rice can be considered a valuable source of bioactive components with high antioxidant properties in breeding programs.

Original languageEnglish
Pages (from-to)1502-1507
Number of pages6
JournalAustralian Journal of Crop Science
Volume6
Issue number11
Publication statusPublished - 2012

Fingerprint

Oryza rufipogon
wild rice
Malaysia
antioxidants
rice
phenolic compounds
extracts
antioxidant activity
ultra-performance liquid chromatography
tocotrienols
whole grain foods
breeding
amylose
tocopherols
detectors
quantitative trait loci
germplasm
nutritive value
genetic variation
cultivars

Keywords

  • 2-diphenyl-1-picrylhydrazyl
  • DPPH-2
  • FRAP-ferric reducing ability power
  • T3-tocotrienol
  • TP-tocopherol
  • TPC-total phenolic content

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Plant Science

Cite this

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title = "Proximate nutritional composition and antioxidant properties of Oryza rufipogon, a wild rice collected from Malaysia compared to cultivated rice, MR219",
abstract = "Wild rice (Oryza rufipogon L) is known as an important germplasm that has specific desirable attributes and a high genetic diversity. The physicochemical and antioxidant properties of O. rufipogon Griff. (acc. IRGC105491), a wild rice collected from Malaysia that was used in a breeding program and a QTL mapping study, were assessed to determine the rice's nutritional value compared with a commonly consumed rice cultivar MR219 (O. sativa subsp. indica). To identify and quantify the phenolic compounds in the rice extracts, Ultra Performance Liquid Chromatography (UPLC) coupled with a photodiode array detector (PDA) was applied. The results obtained were supported by a determination of the total phenolic compounds (TPC), 2,2-diphenyl-1-picrylhydrazyl (DPPH.) radical scavenging, tocopherols, tocotrienols, and the ferric reducing ability power (FRAP) of the respective extracts originating from the whole grain. The results indicated that O. rufipogon, irrespective of its poor appearance, contained high proximate nutritional composition and antioxidant properties. The grain of O. rufipogon consisted of 8.0{\%} protein, 2.2{\%} fat, and 25.0{\%} amylose content all significantly higher than the ratios of MR219. Except for the percentage of inhibition DPPH? radical, which was statistically at par with MR219, the antioxidant activity of O. rufipogon was higher than that of MR219. The high antioxidant activity of O. rufipogon was supported by the presence of high tocochromanol content higher than MR219. Oryza rufipogon extracts were also the most effective in antioxidative reactions. This study demonstrated that wild rice can be considered a valuable source of bioactive components with high antioxidant properties in breeding programs.",
keywords = "2-diphenyl-1-picrylhydrazyl, DPPH-2, FRAP-ferric reducing ability power, T3-tocotrienol, TP-tocopherol, TPC-total phenolic content",
author = "Parviz Fasahat and Kharidah Muhammad and Aminah Abdullah and {V Ratnam}, {R Wickneswari}",
year = "2012",
language = "English",
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pages = "1502--1507",
journal = "Australian Journal of Crop Science",
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T1 - Proximate nutritional composition and antioxidant properties of Oryza rufipogon, a wild rice collected from Malaysia compared to cultivated rice, MR219

AU - Fasahat, Parviz

AU - Muhammad, Kharidah

AU - Abdullah, Aminah

AU - V Ratnam, R Wickneswari

PY - 2012

Y1 - 2012

N2 - Wild rice (Oryza rufipogon L) is known as an important germplasm that has specific desirable attributes and a high genetic diversity. The physicochemical and antioxidant properties of O. rufipogon Griff. (acc. IRGC105491), a wild rice collected from Malaysia that was used in a breeding program and a QTL mapping study, were assessed to determine the rice's nutritional value compared with a commonly consumed rice cultivar MR219 (O. sativa subsp. indica). To identify and quantify the phenolic compounds in the rice extracts, Ultra Performance Liquid Chromatography (UPLC) coupled with a photodiode array detector (PDA) was applied. The results obtained were supported by a determination of the total phenolic compounds (TPC), 2,2-diphenyl-1-picrylhydrazyl (DPPH.) radical scavenging, tocopherols, tocotrienols, and the ferric reducing ability power (FRAP) of the respective extracts originating from the whole grain. The results indicated that O. rufipogon, irrespective of its poor appearance, contained high proximate nutritional composition and antioxidant properties. The grain of O. rufipogon consisted of 8.0% protein, 2.2% fat, and 25.0% amylose content all significantly higher than the ratios of MR219. Except for the percentage of inhibition DPPH? radical, which was statistically at par with MR219, the antioxidant activity of O. rufipogon was higher than that of MR219. The high antioxidant activity of O. rufipogon was supported by the presence of high tocochromanol content higher than MR219. Oryza rufipogon extracts were also the most effective in antioxidative reactions. This study demonstrated that wild rice can be considered a valuable source of bioactive components with high antioxidant properties in breeding programs.

AB - Wild rice (Oryza rufipogon L) is known as an important germplasm that has specific desirable attributes and a high genetic diversity. The physicochemical and antioxidant properties of O. rufipogon Griff. (acc. IRGC105491), a wild rice collected from Malaysia that was used in a breeding program and a QTL mapping study, were assessed to determine the rice's nutritional value compared with a commonly consumed rice cultivar MR219 (O. sativa subsp. indica). To identify and quantify the phenolic compounds in the rice extracts, Ultra Performance Liquid Chromatography (UPLC) coupled with a photodiode array detector (PDA) was applied. The results obtained were supported by a determination of the total phenolic compounds (TPC), 2,2-diphenyl-1-picrylhydrazyl (DPPH.) radical scavenging, tocopherols, tocotrienols, and the ferric reducing ability power (FRAP) of the respective extracts originating from the whole grain. The results indicated that O. rufipogon, irrespective of its poor appearance, contained high proximate nutritional composition and antioxidant properties. The grain of O. rufipogon consisted of 8.0% protein, 2.2% fat, and 25.0% amylose content all significantly higher than the ratios of MR219. Except for the percentage of inhibition DPPH? radical, which was statistically at par with MR219, the antioxidant activity of O. rufipogon was higher than that of MR219. The high antioxidant activity of O. rufipogon was supported by the presence of high tocochromanol content higher than MR219. Oryza rufipogon extracts were also the most effective in antioxidative reactions. This study demonstrated that wild rice can be considered a valuable source of bioactive components with high antioxidant properties in breeding programs.

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VL - 6

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JO - Australian Journal of Crop Science

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SN - 1835-2693

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