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    • 1. 发明授权
    • Brassica or helianthus plants having mutant delta-12 or delta-15 sequences
    • 芸苔属或具有突变体δ-12或δ-15序列的向日葵植物
    • US07135614B1
    • 2006-11-14
    • US08572027
    • 1995-12-14
    • Lorin R. DeBonteZhegong FanGuo-Hua Miao
    • Lorin R. DeBonteZhegong FanGuo-Hua Miao
    • A01H5/00A01H1/06C07H21/02
    • C12N9/0083C12N15/8247
    • Plants are disclosed that contain a mutation in a delta-12 or delta-15 fatty acid desaturase gene. Preferred plants are rapeseed and sunflower plants. Plants carrying such mutant genes have altered fatty acid composition in seeds. In one embodiment, a plant contains a mutation in a region having the conserved motif His-Xaa-Xaa-His, found in delta-12 and delta-15 fatty acid desaturases. A preferred motif has the sequence His-Glu-Cys-Gly-His. A preferred mutation in this motif has the amino acid sequence His-Lys-Cys-Gly-His. Nucleic acid fragments are disclosed that comprise a sequence of at least 20 nucleotides from a mutant delta-12 or delta-15 fatty acid desaturase gene.
    • 公开了在δ-12或δ-15脂肪酸去饱和酶基因中含有突变的植物。 优选的植物是油菜籽和向日葵植物。 携带这种突变基因的植物已经改变了种子中的脂肪酸组成。 在一个实施方案中,植物在具有保守基序His-Xaa-Xaa-His,在δ-12和δ-15脂肪酸去饱和酶中发现的区域中含有突变。 优选的基序具有序列His-Glu-Cys-Gly-His。 该基序中优选的突变具有氨基酸序列His-Lys-Cys-Gly-His。 公开了包含来自突变体Δ-12或δ-15脂肪酸去饱和酶基因的至少20个核苷酸的序列的核酸片段。
    • 2. 发明授权
    • High stability canola oils
    • 高稳定性油菜籽油
    • US5885643A
    • 1999-03-23
    • US651684
    • 1996-05-21
    • Dharma R. KodaliLorin R. DeBonteZhegong Fan
    • Dharma R. KodaliLorin R. DeBonteZhegong Fan
    • A23D9/00A23D9/06C11B7/00C11C3/12
    • C11B7/0075A23D9/00A23D9/06C11C3/123
    • Hydrogenated canola oils having improved oxidative stability are disclosed. These oils have relatively low levels of trans-fatty acids and saturated fatty acids, yet possess an oxidative stability of greater than 300 AOM hours. Such oils can be produced by hydrogenation of refined, bleached canola oil extracted from Brassicaceae seeds having elevated levels of oleic acid and reduced levels of polyunsaturated fatty acids. Brassica lines producing seeds having such fatty acid profiles are disclosed. Hydrogenated oils may be fractionated to obtain canola oils that are liquid at or below room temperature and have relatively low levels of trans-fatty acids and saturated fatty acids, yet have an oxidative stability of greater than 300 AOM hours.
    • 公开了具有改善的氧化稳定性的氢化卡诺拉油。 这些油具有相对低水平的反式脂肪酸和饱和脂肪酸,但具有大于300AOM小时的氧化稳定性。 这种油可以通过从具有升高的油酸水平和降低的多不饱和脂肪酸水平的甘蓝科种子提取的精制漂白的卡诺拉油的氢化来生产。 公开了生产具有这种脂肪酸分布的种子的芸苔属品系。 氢化油可以分馏以获得在室温或低于室温下为液体并具有相对低水平的反式脂肪酸和饱和脂肪酸的低芥酸菜子油,但具有大于300AOM小时的氧化稳定性。