两品种芜菁中芥子油苷含量的比较分析

采用HPLC方法测定“红圆”芜菁(HY)和“白玉”芜菁(BY)肉质根和叶片中芥子油苷(GS)成分和含量.结果表明:不同品种芜菁以及同一品种不同部位中芥子油苷(简称GS)含量差别较大.在“红圆”芜菁肉质根中检测出11种GS,在其叶片中检测出9种GS;“红圆”根中主要为苯乙基GS和2-羟基-3-丁烯基GS,分别占总硫苷的37.2％和20.9％,根中总GS含量是叶中的2.1倍.在“白玉”芜菁肉质根中检测出9种GS,主要GS种类为3-丁烯基GS和苯乙基GS,分别占总GS的65.6％和23.4％；在“白玉”芜菁叶片中含8种GS,不合有苯乙基GS,“白玉”叶中GS总量是根中含量的1.2倍.

Analysis of Glucosinolate Content in Two Cultivar Turnips

The composition and content of glucosinolates(GS) in roots and leaves of ‘Hongyuan’ and ‘Baiyu’ turnips were analyzed by HPLC method.The results showed that different turnip species had different glucosinolate content and composition.And different part organs in same turnip also had different level of glucosinolate content.11 individual glucosinolates were found in ‘Hongyuan’ turnip roots.However,‘Hongyuan’ turnip leaves contained 9 individual glucosinolates.2-phenylethy GS and 2-hydroxy-3-butenyl GS were the main composition and occupied 37.2% and 20.9% respectively in ‘Hongyuan’ turnip roots.Total glucosinolate content in ‘Hongyuan’ turnip roots was 2.1 times as much as in ‘Hongyuan’ turnip leaves.9 individual glucosinolates were found in ‘Baiyu’ turnip roots.The main glucosinolates were 3-butenyl GS and 2-phenylethy GS and they occupied 65.6% and 23.4% respectively in ‘Baiyu’ turnip roots.2-phenylethy glucosinolate was not discovered in ‘Baiyu’ turnip leaves.Total glucosinolates in ‘Baiyu’ turnip leaves was 1.2 times as much as in roots.