伊犁河谷罗布红麻资源调查及其黄酮抗氧化研究
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1.中国农业科学院麻类研究所;2.新疆伊犁州农业科学研究所

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基金项目:

新疆少数民族科技人才特殊培养计划(2020D03028);天山青年基层青年科技人才培养项目(2020Q095);长沙市杰出创新青年培养计划(Kq2107017);中国农业科学院科技创新工程(CAAS-ASTIP-IBFC04)。


Investigation on Apocynum venetum Resources in Ili River Valley and Antioxidative Activity of Their Flavonoid constituent
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Affiliation:

1.Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences;2.Ili Agricultural Institute

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Special Training Plan for Minority Science and Technology Talents of Xinjiang Uyghur Autonomous Region (2020D03028), Tianshan Youth Grassroots Youth Science and Technology Talent Training Project (2020Q095), Changsha Outstanding Innovative Youth Training Program (Kq2107017), Agricultural Science and Technology Innovation Project of the Chinese Academy of Agricultural Sciences (CAAS-ASTIP-IBFC04).

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    摘要:

    罗布红麻具有重要的经济价值和生态应用潜力,但其资源分布、生物学特性等系统性研究的缺乏严重限制了新品种培育与产业开发进程。为探明伊犁河谷罗布红麻资源分布情况,评价种质间黄酮成分含量差异及其体外抗氧化活性,本研究对伊犁河谷地区6个市县罗布红麻开展了资源调查,并对其总黄酮抗氧化活性进行了分析。研究共在12个点位发现有罗布红麻资源分布,海拔分布在605~1376 m,株高介于75~220 cm之间,茎总黄酮含量变幅在15.92~42.31 mg/g(干重),叶总黄酮含量变幅在34.33~56.06 mg/g(干重)。叶片中的总黄酮含量均高于茎,与海拔和株高无显著相关性(p<0.05)。对采集自察布查尔锡伯自治县罗布红麻资源样品的总黄酮抗氧化活性进行评价发现,其总黄酮对DPPH和ABTS自由基的清除率高达92.97%和97.40%,IC50值分别为0.077 mg/mL和0.143 mg/mL,T-AOC总抗氧化能力达10.48 μmol/mL,较低于维生素C。研究认为,新疆伊犁河谷罗布红麻资源黄酮含量变异丰富,具有较好的遗传改良潜力,并表现出优异的抗氧化特性,具有较高的开发利用价值。

    Abstract:

    Apocynum venetum has important medicinal value and ecological application potential, but the crop breeding and development were strictly limited due to the lack of systematic research on its biological characteristics. In order to investigate the distribution of Apocynum venetum resources in the Ili River Valley, and to evaluate the differences in flavonoid content among germplasms and their in vitro antioxidant activity. This study was conducted to investigate the resources of Apocynum venetum in 6 districts and counties along the Valley and the antioxidant activity of their total flavonoids were evaluated. In total, 12 sites were found with the distribution of Apocynum venetum resources, with elevation distribution from 605 to 1376 m, The plant heights variation from 75 to 220 cm, stems total flavonoid content variation from 15.92 to 42.31 mg/g (DW), and leaves total flavonoid content variation from 34.33 to 56.06 mg/g (DW). The total flavonoid content in the leaves was higher than that in the stems, and there was no significant correlation with altitude and plant height (p<0.05). The evaluation of the antioxidant activity of total flavonoids in the samples collected from Apocynum venetum resources in Qapqal Xibe Autonomous County showed that the total flavonoids scavenged 92.97% and 97.40% of DPPH and ABTS radicals with IC50 values of 0.077 mg/mL and 0.143 mg/mL, respectively, and the total antioxidant capacity of T-AOC reached 10.48 μmol/mL, which was lower than that of vitamin C. The study concluded that the rich variation in flavonoid content of Apocynum venetum resources in the Ili River Valley has good genetic improvement potential and exhibits excellent antioxidant properties, which has high exploitation value.

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  • 收稿日期:2022-03-04
  • 最后修改日期:2022-04-06
  • 录用日期:2022-04-21
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