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首页> 外文学位 >The influence of genotype, ring specificity, gamma irradiation, location, soil type, and growth stage on the contents of the anticarcinogenic flavonol, quercetin, in onion (Allium cepa L.).
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The influence of genotype, ring specificity, gamma irradiation, location, soil type, and growth stage on the contents of the anticarcinogenic flavonol, quercetin, in onion (Allium cepa L.).

机译：基因型，环特异性，γ射线辐照，位置，土壤类型和生长期对洋葱（葱属）中抗癌黄酮醇，槲皮素含量的影响。

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The variation in quercetin content due to genotypes was investigated using reverse phase high performance liquid chromatography (HPLC). Different quercetin glucosides were hydrolyzed into aglycones. On a fresh weight basis, total quercetin content in yellow and red onions varied from 56.16 to 286.40 mg/kg in different genotypes. White onions contained only a trace amount of total quercetin. One of the TAES genotypes '20272-G' had the highest aglycone content 12.50 mg/kg.; A decrease in total quercetin content was observed from the dry skin to the inner rings, and both middle rings (5-6) and inner rings (7-10) contained less total quercetin in all genotypes. The highest total quercetin content was observed in the dry skins of 'Red Bone', while the white 'Contessa', contained the least amount. Among the edible parts, total quercetin content in outer scales of 'Kadavan' was the highest. Outer rings of all genotypes except 'TG1015Y' and 'Contessa' contained moderate amounts of the aglycone. The highest concentration of aglycone was observed in 'Kadavan' skin.; Total quercetin content in 'Dorado' (diced) and 'Cardinal' (whole bulb) increased significantly (P = 0.05) both at 0.8 and 1.2 kGy. Aglycone content increased significantly (P = 0.05) in diced onions treated both at 0.8 and 1.2 kGy in 'Cardinal', 'Dorado', and '20352G' genotypes. Aglycone content in whole bulbs did not show a significant increase. Wounding alone did not influence total quercetin content during seven days stored at {dollar}-20spcirc{dollar}C.; Four genotypes showed significant differences in total quercetin content due to two locations. Total quercetin content in 'TG1015Y' due to different growth stages indicated differences but they were not significant. At second growth stage (23 Mar.) onions grown in the sandy loam soil, exhibited a significant (P = 0.05) increase in total quercetin content over those harvested at the first growth stage (9 Mar.). However, total quercetin content of onions in both fields were found to be more or less similar on both first and the last growth stages (21 Apr.). Thus, quercetin content was influenced by both the location and growth stage.
机译：使用反相高效液相色谱（HPLC）研究了槲皮素含量由于基因型的变化。将不同的槲皮素糖苷水解成糖苷配基。以鲜重计，不同基因型的黄洋葱和红洋葱中的槲皮素总含量在56.16至286.40 mg / kg之间。白洋葱仅含有微量的槲皮素。 TAES基因型“ 20272-G”之一的苷元含量最高，为12.50 mg / kg。从干燥的皮肤到内环，总槲皮素含量降低，在所有基因型中，中环（5-6）和内环（7-10）都含有较少的总槲皮素。在“红骨”的干燥皮肤中观察到了最高的槲皮素含量，而白色“伯爵夫人”的含量最少。在可食用部分中，“ Kadavan”外表中的槲皮素总含量最高。除“ TG1015Y”和“伯爵夫人”外，所有基因型的外环均含有适量的糖苷配基。在“ Kadavan”皮肤中观察到了最高浓度的糖苷配基。 'Dorado'（切成丁）和'Cardinal'（整个鳞茎）中的槲皮素总含量在0.8和1.2 kGy时均显着增加（P = 0.05）。在'Cardinal'，'Dorado'和'20352G'基因型中，分别以0.8和1.2 kGy处理的切成丁的洋葱，苷元含量显着增加（P = 0.05）。整个球茎中的苷元含量没有显着增加。在{dollar} -20spcirc {dollar} C下储存7天，仅伤口对槲皮素的总含量没有影响。四个基因型由于两个位置而显示出槲皮素总含量的显着差异。由于生长阶段不同，'TG1015Y'中的槲皮素总含量显示出差异，但并不显着。在第二个生长阶段（3月23日），沙质壤土中生长的洋葱比第一个生长阶段（3月9日）收获的槲皮素总含量显着增加（P = 0.05）。然而，两个领域的洋葱的总槲皮素含量在第一个和最后一个生长阶段（4月21日）都或多或少相似。因此，槲皮素的含量受位置和生长阶段的影响。

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