| 摘要: |
| 【目的】对分蘖洋葱和普通洋葱的营养品质进行对比分析，为分蘖洋葱营养价值的进一步研究提供科学依据。【方法】测定紫皮和黄皮普通洋葱及褐皮和黄皮分蘖洋葱不同部位的基本营养成分和特殊风味物质含量，比较种类和品种间各营养成分含量的差异。【结果】分蘖洋葱干物质质量分数为9.37%～19.20%，可溶性糖含量为89.34～132.99 mg/g，可溶性蛋白含量为1.54～2.46 mg/g，游离氨基酸含量为1.56～2.85 μg/g，丙酮酸浓度为62.31～123.67 μmol/mL，黄酮类化合物含量为2 193.4～2 648.2 mg/kg；基本营养成分和丙酮酸含量均为内层鳞茎高于外层鳞茎，黄酮类化合物含量为外层鳞茎高于内层鳞茎；褐皮分蘖洋葱除可溶性糖和黄酮类化合物外，其他营养物质含量均低于黄皮分蘖洋葱。【结论】分蘖洋葱基本营养成分和特殊风味物质含量均显著高于普通洋葱；相同类型不同皮色间在营养成分含量上存在差异，且不同成分间的差异性不同；从各种营养物质的分布看，除黄酮类化合物外均表现为内层鳞茎高于外层鳞茎。 |
| 关键词: 分蘖洋葱 普通洋葱 营养成分 风味物质 |
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| 基金项目:吉林省科技厅项目（201214） |
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| Comparative analysis of nutritional quality between Allium cepa L.var.agrogatum Don.and Allium cepa L. |
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ZHAO Jing,SONG Shu-yao,HAN Yu-zhu,et al
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| Abstract: |
| 【Objective】This study compared the nutritional quality between Allium cepa L.var.agrogatum Don.and Allium cepa L.to improve the further study of Allium cepa L.var.agrogatum Don..【Method】Pink peel and yellow-peel Allium cepa L.var.and brown-peel and yellow-peel skin Allium cepa L.var.agrogatum Don.were chosen in this study,and their nutritional compositions and flavor compounds of outer-bulb and inner-bulb were measured and analyzed.【Result】The mass fraction of day matter and the contents of soluble sugar,soluble protein,free amino acids,pyruvate,and flavonoids in Allium cepa L.var.agrogatum Don.were 9.37%-19.20%,89.34-132.99 mg/g,1.54-2.46 mg/g,1.56-2.85 μg/g,62.31-123.67 μmol/mL,and 2 193.4-2 648.2 mg/kg,respectively.Inner layer had higher contents of basic nutritional components and pyruvate but lower flavonoids than outer layer.The nutrients of brown peel Allium cepa L.var.agrogatum Don.were higher than yellow-peel skin Allium cepa L.var.agrogatum Don.except soluble sugar and pyruvate.【Conclusion】The basic nutritional compositions and special flavor materials of Allium cepa L.were significantly lower than those of Allium cepa L.var.agrogatum Don..Nutrient compositions contents were different between different peel color onions,and their contents in inner layer were higher than those of outer layer except flavonoids. |
| Key words: Allium cepa L.var.agrogatum Don. Allium cepa L. nutrient composition flavors |
