Determination of capsaicinoids and piquancy characteristic of Zhejiang dishes
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摘要: 目的:通过对GB/T 21266-2007中辣椒素和二氢辣椒素检测的色谱条件的优化,建立快速有效的测定菜点中主要辣味成分的方法。以实地采样的浙江绍兴、杭州、宁波、温州四地的代表菜品为实验对象,测定各地菜品中辣味成分的含量,从而分析浙江地区食品的辣味特征。方法:超声波辅助甲醇-四氢呋喃(1∶1)提取样品中的辣椒素、二氢辣椒素,然后采用高效液相色谱法测定辣味物质含量。结果:确定色谱流动相为甲醇∶水(70∶30),流速为0.8 m L/min,检测波长为280 nm。辣椒素的回归方程为Y=6636.7X+1221,相关系数R2=0.9999。二氢辣椒素的回归方程为Y=6338.9X-3758,相关系数R2=0.9999。浙江100道菜品中使用辣椒及其制品的菜肴所占比例为13%,浙江菜品整体辣度为0.143。结论:该方法快速准确可靠,可用于浙江菜品辣椒素、二氢辣椒素的含量测定。浙江菜品整体辣度很弱。Abstract: Objective:The aim of this study was to find a efficient and faster way for the determination of main spicy ingredients in dishes through optimizing the detection chromatographic condition according to GB/T21266-2007. Taking a part of Zhejiang dishes that collected from Shaoxing,Hangzhou,Ningbo and Wenzhou as the experimental subject,detecting spicy ingredients in each dish,then analyzed the piquancy characteristics of Zhejiang dishes. Method:Capsaicin and dihydrocapsaicin were extracted by ultrasonic with methanol-tetrahydrofuran( 1 ∶ 1) as solvent, high performance liquid chromatography( HPLC) was used to analyze capsaicinoid compounds. Result:The mobile phase was methanol:water(70∶30) with the flow rate was 0.8 m L/min and the UV detection wavelength was set at 280 nm. The regression equation of capsaicin was Y =6636.7X +1221 and correlation coefficient R2=0.9999. The regression equation of dihydrocapsaicin was Y=6338.9X-3758 and correlation coefficient R2=0.9999. The proportion of the use chili in Zhejiang 100 dishes was 13%,the spicy degree of whole dishes was 0.143. Conclusion:This method was accurate,speedy and reproducible.Pungency level in Zhejiang dishes was low.
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Keywords:
- capsaicinoid /
- Zhejiang dishes /
- extraction /
- HPLC /
- pungency degree
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