摘要
采用超高效液相色谱-串联质谱法对玫瑰香葡萄中白藜芦醇及其衍生物的含量进行测定。结果表明,当玫瑰香葡萄经过剂量为4.5 k J/m^2的短波紫外照射后,20℃贮藏至48 h时,白藜芦醇和白藜芦醇苷含量达到最高,分别为90.29 μg/g和163.28 μg/g;贮藏至72 h时,紫檀芪含量达到最高38.67 μg/g。短波紫外照射也可以降低可溶性固形物、VC、可滴定酸等品质评价指标的下降速率。
In this study,ultra performance liquid chromatography-tandem mass spectrometry(UPLC-MS/MS)was used to determine the contents of resveratrol and its derivatives in Muscat grapes.After being irradiated with4.5kJ/m2UV-C,Muscat grapes were stored at20℃.The experimental results showed that the contents of resveratrol and resveratrol glucoside increased to their maximum values of90.29and163.28μg/g,respectively,after48h of storage.After72h of storage,the content of pterostilbene increased to its maximum level(38.67μg/g).At the same time,UV-C radiation also decreased the rate of reduction in soluble solids,vitamin C and titratable acid.
作者
李一凡
王凤玲
赵绮晴
杨丹
LI Yifan;WANG Fengling;ZHAO Qiqing;YANG Dan(Tianjin Key Laboratory of Food and Biotechnology, College of Biotechnology and Food Science,Tianjin University of Commerce, Tianjin 300134, China)
出处
《食品科学》
EI
CAS
CSCD
北大核心
2017年第18期175-179,共5页
Food Science
