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Experimental investigation on color variation mechanisms of structural light in Papilio maackii ménétriès butterfly wings

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Science China(Technological Sciences) 2007年第4期50卷 430-436页

作者： REN LuQuan QIU ZhaoMei HAN ZhiWu GUAN HuiYing WU LiYan Key Laboratory for Terrain-Machine Bionics Engineering Ministry of EducationCollege of Biological and Agricultural EngineeringJilin UniversityChangchun 130022China

The body color in animals results from billions of years of their natural evolution in order to evade natural enemies, catch quarries or display themselves beauty, in-vestigation on mechanisms of structural light is an important aspect of bionics. Based on the phenomenon of Papilio maackii ménétriès’ blue scales changing into green ones immediately after dropping some alcohol aqua on the underwing sur-face and soon returning back to the original color, the relationship between micro-structure, optics characteristic of scales and changing color effect were studied using the Olympus Stereomicroscope, Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM) and Ultraviolet (UV)-Visible Spectropho-tometer. The color variation mechanisms of blue scales of Papilio maackii mé-nétriès in Chinese Northeast were revealed in this paper. When visible lights trav-eled through the concaver structure with multilayer reflector and the filled medium with different refractive indices, the reflected lights in definite wavelengths pro-duced interference and color at that wavelength came into being. It has important academic reference value to biomimetics design of video stealth materials.

关键词： video stealth Papilio maackii ménétriès color variation of structural light

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Inhibition of advanced glycation endproducts formation by Korean thistle,Cirsium maackii

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Asian Pacific Journal of Tropical Medicine 2015年第1期8卷 1-5页

作者： Hyun Ah Jung Jin Ju Park Byung Sun Min Hee Jin Jung Md.Nurul Islam Jae Sue Choi Department of Food Science and Human Nutrition Chonbuk National University Department of Food and Life Science Pukyong National University College of Pharmacy Catholic University of Daegu

Objective:To evaluate inhibitoy potential of seven Korean thistles against the advanced glyeatinn endproducts(AGE) formation as well as to identify responsible compounds from the most active ***:We used an in vitro AGE inhibition assay to evaluate the antidiabetic complication potential of the methanol extracts of the selected Korean ***:Among the seven Korean thistles,the leaves of Cirsium maackii(***) exhibited the most significant inhibitory activity against AGE *** means of bioassay-directed fractionation,a *** acid and 14 flavonoids were isolated from the active ethyl acetate soluble fraction of a methanol extract from *** *** and its 5-O-glueoside have been previously isolated:however,a lignan and 13 known compounds were isolated for the first lime from C maackii leaves in this *** of the isolated compounds exhibited inhibitory activities against potential AGE *** them,cernuoside was shown to be the most potent AGE inhibitor with an IC_(50) value of 21.21 μ mol/*** importantly,two major flavonoids,luteolin and ils 5-O-glucoside,also significantly inhibited AGE formation,with IC_(50) values of36.33 and 37.47 μmol/L,*** activity relationship revealed that the presence of free 3'and 4' dihydroxyl group in flavonoids skeleton played an important role in AGE ***:These results indicate that *** and C maackii-derived flavonoids might be explored further to develop therapeutic agents for the prevention of diabetic eoniplicalions due to their significant inhibitory activity against AGE formation.

关键词： Flavonoids Thistle Advanced glycation endproducts Diabetic complications Cirsium maackii

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盐胁迫下丝棉木品种“金枝玉叶”生理特性研究

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林业科技通讯 2019年第6期 56-59页

作者：赵志汝王东超郭冠男何甜甜河南红枫种苗股份有限公司郑州450002

以盆栽丝棉木(Euonymus maackii)新品种'金枝玉叶'为试验材料,研究不同程度盐胁迫下生长、叶片部分生理生化指标变化和耐盐指数,探讨'金枝玉叶'植株的耐盐能力。结果表明:'金枝玉叶'叶片的MDA含量在0.2%和0.5%盐胁迫处理下与CK变化趋势... 详细信息

以盆栽丝棉木(Euonymus maackii)新品种'金枝玉叶'为试验材料,研究不同程度盐胁迫下生长、叶片部分生理生化指标变化和耐盐指数,探讨'金枝玉叶'植株的耐盐能力。结果表明:'金枝玉叶'叶片的MDA含量在0.2%和0.5%盐胁迫处理下与CK变化趋势相似,而在0.8%盐胁迫下以较快的速度增加;其叶片细胞膜透性在0.5%和0.8%胁迫下明显增大,而0.2%胁迫对其影响不明显。叶片脯氨酸含量随着盐胁迫程度的增强和处理时间的延长而增加;叶片束缚水/自由水在0.2%和0.5%胁迫处理下变化较大,在0.8%胁迫处理下变化较小。随着盐浓度的增加,'金枝玉叶'生物量受到抑制,地下部盐敏感指数低于地上部,地下部盐耐受指数高于地上部。研究发现,'金枝玉叶'植株可通过叶片脯氨酸、MDA含量以及束缚水/自由水比值来调节抗盐机理,从而在一定程度上避免了进一步盐害。

关键词：盐胁迫 Euonymus maackii “金枝玉叶” 生理生化指标

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