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食品研究与开发:2016,37(13):-
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分光光度法测定毛酸浆果中总黄酮含量的研究
(1.黑龙江八一农垦大学食品学院,黑龙江大庆163319;2.黑龙江八一农垦大学生命科学技术学院,黑龙江大庆163319)
Study on Quantitative Determination of Total Flavonoids in Physalis Pubescens L.by Spectrophotometry
(1.College of Food Science,Heilongjiang Bayi Agricultural University,Daqing 163319,Heilongjiang,China;2.College of Life Science and Technology,Heilongjiang Bayi Agricultural University,Daqing 163319,Heilongjiang,China)
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投稿时间:2015-05-17    
中文摘要: 探讨建立分光光度法测定毛酸浆中的总黄酮含量的方法,通过考察显色剂用量以及加入显色剂后放置时间对毛酸浆总黄酮测定的影响,采用单因素和正交试验优化硝酸铝-亚硝酸钠比色法测定毛酸浆果中总黄酮的含量。结果表明,毛酸浆中总黄酮含量测定的最佳的条件为:5%NaNO2溶液0.8 mL,混匀放置2 min后,加10%Al(NO3)3溶液0.8 mL,混匀,继续加4%NaOH溶液6 mL,定容混匀后立即在335 nm下测其吸光度。在此条件下,芦丁标准溶液在0~0.002 4 mg/mL范围内与吸光度值间的回归方程y=289.02x+0.008,R2=0.999 5。该测定方法的平均加标回收率为100.83%,稳定性、精密度以及回收率的相对标准偏差(RSD)分别为0.34%,0.29%和2.91%。该方法简便、快速、准确,可以用于毛酸浆果汁中总黄酮含量的测定。
中文关键词: 毛酸浆果  总黄酮  分光光度法
Abstract:Spectrophotometric determination of total flavonoids from Physalis Pubescens L.was studied.Al(NO)3Spectrophotometry was optimized through the single-factor experiment and orthogonal experiment and the effect of the amount of chromogenic agent,reaction time were analyzed.The optimum experiment condition used to determinate the total flavonoids in Physalis Pubescens L.was obtained as follows:add 0.8 mL NaNO2(5%),two minutes later,add 0.8 mL Al(NO3)3(10%),then add 6 mL NaOH(4%),mixing them immediatelyevery time,andtheabsorbancewasdetectedunder335nm.Underthismethod,thecorrelationequationwasy=289.02x+ 0.008,R2=0.999 5,it showed a very good linear relationship within the range of 0.000 0-0.002 4 mg/mL.And the stability,precision and average recovery rate was 0.34%,0.29%and 2.91%by RSD(relative standard deviation)respectively and average recovery rate was 100.83%.This method is convenient,fast and accurate to determine the total flavonoids in Physalis Pubescens L..
文章编号:201613026     中图分类号:    文献标志码:
基金项目:黑龙江八一农垦大学研究生创新科研项目(YJSCX2015-Y49)
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