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KMID : 0380619740060010012
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Korean Journal of Food Science and Technology
1974 Volume.6 No. 1 p.12 ~ p.16
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Amino acids in Embryo and Endosperm of Brown Rice different in Specific Gravity
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Abstract
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The amino acid pattern of embryo and endosperm of brown rice different in specific gravity was investigated using Jinheung (local leading temperate variety) and IR667-Suweon 213 (high-Yielding newly bred tropical variety).
1. Embryo of IR667 (higher protein rice) showed lower protein, and lower lysine or essential amino acid per protein than that of Jinheung (lower protein rice).
2. In both embryo and endosperm nitrogen recovery as amino acids was highest in middle class of specific gravity and lowest in low class indicating that abundancy of non-protein nitrogen in low class and decomposition of amino acids by starch in high specific gravity class.
3. In both embryo and endosperm IR667 showed abundancy in order of glutamic acid, aspartic acid while Jinheung showed glutamic acid, arginine, suggesting varietal difference in nitrogen metabolism.
4. In both IR667 and Jinheung least amino acid was histidine and next leucine in embryo but histidine and next threonine in endosperm, suggesting organ difference in nitrogen metabolism.
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KEYWORD
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