| 柑橘类水果中总酸与总糖的测定 |
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| 引用本文： | 吴晓红,陈宝宏,李小华. 柑橘类水果中总酸与总糖的测定[J]. 食品研究与开发, 2012, 33(9): 144-146 |
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| 作者姓名： | 吴晓红 陈宝宏 李小华 |
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| 作者单位： | 江苏经贸职业技术学院,江苏南京210007;江苏省食品安全工程技术研发中心,江苏南京210007 |
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| 基金项目： | 江苏经贸职业技术学院科研基金资助项目 |
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| 摘 要： | 建立柑橘类水果总酸含量的测定方法,并测定其5个品种中总酸和总糖含量.采用电位滴定法测定了柑橘类水果总酸含量和用斐林试剂法测定了其中的总糖含量.测定总酸含量RSD在0.37 ％～2.34％(n=6)之间,平均回收率为98.98％,其中柠檬中总酸含量高达2.78％,其它四种总酸在0.55 ％～0.83％之间.总糖含量在3.16 ％～9.27％之间.电位滴定法简单易行,准确度高.测定结果为柑橘类水果的进一步开发利用提供科学依据.
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| 关 键 词： | 柑橘类水果 总酸 可溶性总糖 糖酸比 |
Determination of Total Acids and Total Sugar in Citrus Fruits |
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| WU Xiao-hong , CHEN Bao-hong , LI Xiao-hua. Determination of Total Acids and Total Sugar in Citrus Fruits[J]. Food Research and Developent, 2012, 33(9): 144-146 |
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| Authors: | WU Xiao-hong CHEN Bao-hong LI Xiao-hua |
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| Affiliation: | 1,2(1.Jiangsu Vocational Institute of Economy and Trade,Nanjing 210007,Jiangsu,China;2.The Research and Empolder Center of Food Safety Project of Jiangsu Province,Nanjing 210007,Jiangsu,China) |
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| Abstract: | To establish a method for determination the content of total acids in citrus fruits,and then to determine the content of total acids and total sugar in 5 different samples.The content of total acids was determined by potentiometric titration,and total sugar was determined by Fehlings Reagent.The results show that the RSD of total acids were between 0.37 % and 2.34 %(n=6),the average recovery was 98.98 %.The highest was lemon(2.78 %),and others were between 0.55 % and 0.83 %.The contents of total sugar were between 3.16 % and 9.27 %.The method of potentionmetric titration was simple and accurate.The results provided certain scientific basis for further efficacy of research and development of citrus fruits. |
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| Keywords: | citrus fruits total acids soluble total sugar sugar/acid ratio |
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