无花果中维生素C含量的测定  

Determination of vitamin C content in Ficus carica L.

作　　者：邓莉[1,2] 向莉 陈轩 肖甚圣[1,2] DENG Li;XIANG Li;CHEN Xuan;XIAO Shen-Sheng(Key Laboratory for Deep Processing of Major Grain and Oil,Ministry of Education,Wuhan Polytechnic University,Wuhan 430023,China;College of Food Science and Engineering,Wuhan Polytechnic University,Wuhan 430023,China;Three Gorges Public Inspection and Testing Center,Yichang 443000,China)

机构地区：[1]武汉轻工大学大宗粮油精深加工教育部重点实验室,武汉430023 [2]武汉轻工大学食品科学与工程学院,武汉430023 [3]三峡公共检验检测中心,宜昌443000

出　　处：《食品安全质量检测学报》2019年第13期4413-4416,共4页Journal of Food Safety and Quality

基　　金：武汉轻工大学校立项目(2019y15)~~

摘　　要：目的采用分光光度法测定无花果和无花果干中维生素C的含量。方法选取一定浓度维生素C标准液进行波长扫描,确定维生素C的最大吸收波长,将待测样品匀浆处理后在此波长下进行分光光度测定。结果维生素C的最大吸收波长为520 nm,校准曲线方程Y=0.0208X+0.001(r^2=0.9998),无花果和无花干果中维生素C含量分别为69.08 mg/100 g和64.06 mg/100 g,加标回收实验中回收率均在90%以上。结论无花果中含有较高的维生素C,且无花果维生素C含量高于无花果干中维生素C含量。Objective To determine the content of vitamin C in Ficus carica L.and dry figs.Methods The certain concentration vitamin C standard solution was used for wavelength scanning to determine the maximum absorption wavelength of vitamin C.The homogenized sample was determined by spectrophotometry at this wavelength.Results The maximum absorption wavelength of vitamin C was 520 nm, the calibration curve equation was Y=0.0208X+0.001(r^2=0.9998), and the vitamin C content in Ficus carica and dried Ficus carica was 69.08 mg/100 g and 64.06 mg/100 g.The recoveries were above 90%.Conclusion Ficus carica L.has higher vitamin C content, and the vitamin C content in Ficus carica is higher than dry figs.

关 键 词：维生素C 无花果 含量 分光光度法 

分 类 号：O657.3[理学—分析化学] TS255.7[理学—化学]