不同产地陇薯7号马铃薯贮藏期间品质变化及烤制风味物质分析
贾琦 , 贠建民 , 武淑娟 , 赵雨萱 , 裴鹏正
甘肃农业大学学报 ›› 2023, Vol. 58 ›› Issue (04) : 252 -259.
不同产地陇薯7号马铃薯贮藏期间品质变化及烤制风味物质分析
Analysis of baked flavor substances and quality changes during storage of Longshu No.7 potato from different producing areas
目的 探究河北产地引种的陇薯7号(Longshu No.7)马铃薯品质,为该品种的推广种植提供一定的数据参考。 方法 以甘肃本地品种陇薯7号为对照,通过低温4 ℃贮藏8个月,对两地该品种马铃薯的干物质和淀粉含量、硬度、色度、发芽率和霉染率指标进行测定,并利用气相色谱-质谱联用(GC-MS)以及相对气味活度值(ROAV)对两地陇薯7号烤制马铃薯挥发性风味物质分析。 结果 两地该马铃薯品种测定指标具有显著相关性(r>0.95),贮藏期间干物质含量和淀粉含量均呈现先上升后下降的趋势;同时,随着贮藏时间的延长,两地马铃薯样品的薯皮硬度、薯皮和薯肉色度、发芽率和霉染率均呈上升趋势,而薯肉硬度呈下降趋势。甘肃本地该品种马铃薯烤制后风味物质主要有25种,河北引种风味物质主要有18种,河北引种产区检出的风味物质少于甘肃产区,但其中,3-甲硫基丙醛、正己醛和壬醛是甘肃产区和河北产区烤熟陇薯7号共有的占比较高的风味化合物。 结论 在河北产区引种的陇薯7号马铃薯,其贮藏品质及熟化后的风味物质并未发生明显改变。
Objective To investigate the quality of Longshu No.7 potato introduced from Hebei producing area,and to provide some data reference for the promotion and planting of this variety. Method The dry matter and starch contents,hardness,color,germination rate and mildew infection rate of gansu longshu No.7 potato were measured by storage at 4 ℃ for 8 months.Gas chromatography-mass spectrometry (GC-MS) and relative odor activity (ROAV) were used to analyze the volatile flavor compounds of diilongshu No.7 baked potato. Result There was a significant correlation (R>0.95) between the indexes of potato varieties in the two regions.During storage,dry matter content and starch content increased firstly and then decreased.At the same time,with the extension of storage time,potato skin hardness,potato skin and flesh color,germination rate and mildew infection rate of potato samples from two places increased,while potato flesh hardness decreased.Gansu local flavor substances mainly after the baked potato varieties have 25 kinds,hebei introduction material basically has 18 kinds of flavor,flavour compounds of hebei introduction region detection is less than the region in gansu,but among them,3-methyl sulfonium propanal,hexanal and nonyl aldehyde is production areas in gansu and hebei region is baked gansu potato a total of 7 of high flavor compounds. Conclusion The storage quality and flavor of Longshu no.7 potato introduced in Hebei province did not change significantly.
longshu No.7 / producing area / nutritional composition / sensuous quality,baked flavor
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甘肃省教育科学与技术创新专项(GSSYLXM-02)
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