基于氨基柱的高效液相色谱-示差折光检测器方法分析媚丽葡萄香气糖苷的糖基组成

发布时间：2018-11-21 14:45

【摘要】：建立了基于氨基柱的高效液相色谱分析媚丽葡萄香气糖苷的糖基组成的方法。媚丽葡萄果皮经提取缓冲液(0.1 mol/L Na_2HPO_4-NaH_2PO_4,pH 7.0,13%(V/V)乙醇)浸提,葡萄香气糖苷提取物在柠檬酸-磷酸盐缓冲液(pH 5.0)中用AR2000糖苷酶水解,释放出糖基,经氨基柱分离,用高效液相色谱-示差折光检测器(HPLC-RID)分析。色谱分析条件为:柱温35℃,RID温度35℃,进样量20μL,流动相为乙腈-乙酸乙酯-水(60:25:15,V/V),流速1.0 mL/min。结果表明,鼠李糖、木糖、阿拉伯糖、芹菜糖和葡萄糖在线性范围内线性关系良好(R~20.996),检出限为93~123 mg/L,定量限309~409 mg/L,5 g/L各单糖的峰面积的精密度(n=10)为2.3%~6.4%;糖基样品的各单糖加标回收率在73.8%~125.7%之间。以糖基类别划分的媚丽葡萄各类香气糖苷的摩尔百分比为:6-O-α-L-吡喃鼠李糖基-β-D-吡喃葡萄糖苷,4.1%~6.1%;6-O-β-D-吡喃木糖基-β-D-吡喃葡萄糖苷,2.3%~8.8%;6-O-α-L-呋喃阿拉伯糖基-β-D-吡喃葡萄糖苷,0.1%~3.9%;6-O-α-L-呋喃芹菜糖基-β-D-吡喃葡萄糖苷,5.5%~9.8%;6-O-β-D-吡喃葡萄糖基-β-D-吡喃葡萄糖苷,76.3%~86.8%。媚丽葡萄成熟过程中,各类香气糖苷的含量及其总量与浆果成熟度之间没有明显的相关性。
[Abstract]:A high performance liquid chromatography (HPLC) method based on amino column was established for the analysis of glycosyl composition of aromatics glycosides. The pericarp of the grape was extracted with buffer solution (0.1 mol/L Na_2HPO_4-NaH_2PO_4,pH 7.0% (V / V) ethanol). The glucoside extract was hydrolyzed by AR2000 glucosidase in citric acid phosphate buffer (pH 5.0), and the glycosyl group was released. It was separated by amino column and analyzed by high performance liquid chromatography-differential refraction detector (HPLC-RID). The chromatographic conditions are as follows: column temperature 35 鈩，

本文编号：2347284