HPLC法同时测定柠檬果实中11种类黄酮含量

以四川安岳、云南瑞丽、广东河源的尤力克柠檬和重庆北碚的里斯本、北京柠檬、粗柠檬为材料,建立了HPLC法同时测定柠檬果实中11种类黄酮(橙皮苷、新橙皮苷、柚皮苷、芸香柚皮苷、圣草枸橼苷、橙皮素、柚皮素、木犀草素、川陈皮素、圣草素、芦丁)含量的方法。结果显示:以乙腈–0.1%甲酸水溶液为流动相,梯度洗脱,检测波长287 nm,11种类黄酮在50 min内完全分离,线性范围为0.010 0~100.000 0μg/m L(R2=0.999 9~1.000 0),检出限为0.020~0.079μg/m L,定量限为0.065~0.263μg/m L,加标回收率为95.49%~103.10%,RSD为0.81%~1.20%;6个供试材料果皮中的橙皮苷、圣草枸橼苷和芸香柚皮苷的含量分别在14.42~27.37、0.10~9.38、0.18~0.52 mg/g,以橙皮苷含量最高,其他8种成分的含量未超过0.50 mg/g或未检出;果汁中的橙皮苷和芸香柚皮苷的含量分别为6.64~7.42和0.03~0.15 mg/g,圣草枸橼苷的含量为0.03~0.17 mg/g(里斯本和北京柠檬未检出),芦丁的含量在0.08~0.13 mg/g(里斯本未检出),川陈皮素在四川安岳尤立克、里斯本和粗柠檬中的含量分别为0.05、0.06、0.06mg/g,其他6种成分均未检出。结果表明,不同品种柠檬果实中类黄酮含量存在差异,不同产地的尤立克品种间的类黄酮含量也存在差异。

Simultaneous determination of eleven flavonoids in different lemon (Citrus limon) varieties by HPLC

Eureka lemon from 3 different areas: Anyue county at Sichuan province, Ruili county of Yunnan province, Heyuan city at Guangdong province and 3 different varieties: Lisben, Mayer lemon and Rough lemon from Beibei region at Chongqing city were used as material, to establish a high performance liquid chromatograph (HPLC) method for the determination of 11 flavonoids, namely, hesperidin, neohesperidin, naringin narirutin, eriocitrin, hesperitin, naringenin, luteolin, nobiletin, eriodictyol and rutin in lemon fruits simultaneously. The results showed that 11 flavonoids were thoroughly separated within 50 min under the condition of using acetonitrile–0.1% formic acid aqueous solution as mobile phase through gradient elution and the detection wavelength was 287 nm. This method exhibited a linear range from 0.010 0 to 100.000 0μg/mL (the correlation coefficient was from 0.999 9 to 1.000 0). The limits of detection ranged from 0.020 to 0.079μg/mL, and the limits of quantification ranged from 0.065 to 0.263μg/mL. The recoveries ranged from 95.49% to 103.10% withRSD between 0.81% and 1.20%. Hesperidin was the major flavonoid in six lemon varieties. Content of hesperidin, in six varieties peels was from 14.42 to 27.37 mg/g, eriocitrin was from 0.10 to 9.38 mg/g and narirutin was from 0.18 to 0.52 mg/g. Other 8 compounds in peels was less than 0.50 or not detected. Content of hesperidin in six varieties juice was from 6.64 to 7.42 mg/g, and Content of narirutin was from 0.03 to 0.15 mg/g, content of eriocitrin in juice was from 0.03 to 0.17 mg/g and not detected in Lisben and Mayer lemon, content of rutin in juice was from 0.08 to 0.13 mg/g and not detected in Lisbon from Beibei district at Chongqing, content of nobiletin was 0.05, 0.06 and 0.06 mg/g in juice of Eureka from Anyue county at Sichuan province, Lisben and Rough lemon from Beibei district at Chongqing, other 6 compounds were not detected. The results indicated that the content of flavonoids existed difference in different lemon varieties and Eureka lemon from different areas.