HPLC法同時測定雪松不同部位5種酚酸類成分的含量
發(fā)布時間:2018-07-22 13:26
【摘要】:目的:建立同時測定雪松中沒食子酸、原兒茶酸、兒茶素、咖啡酸和阿魏酸的含量測定方法,并用于雪松不同部位(松針、花序、嫩枝、木質部、樹皮)該5種酚酸類成分的測定。方法:采用Eclipse Plus-C18(250 mm×4.6 mm,5μm)色譜柱,以乙腈(A)-0.1%磷酸水溶液(B)為流動相,梯度洗脫(0~6 min,7%A;6~70 min,7%A→20%A;70~80 min,20%A),流速1.0 m L·min~(-1),檢測波長:280 nm,柱溫:25℃。結果:沒食子酸、原兒茶酸、兒茶素、咖啡酸和阿魏酸質量濃度分別在0.06~2.4、0.3~7.2、1.3~31.2、0.6~14.4和0.5~12μg·m L~(-1)范圍內呈良好的線性關系,相關系數為0.999 6~0.999 9;平均加樣回收率(n=6)分別為93.4%、102.2%、100.3%、99.6%和98.6%;精密度、重復性和穩(wěn)定性良好,RSD均小于3%。雪松各部位中5種酚酸類化合物的含量存在明顯差異,嫩枝中沒食子酸、兒茶素和阿魏酸的含量最高,分別為0.134、2.345和0.838 mg·g~(-1),松針中原兒茶酸的含量最高為0.479 mg·g~(-1),木質中咖啡酸的含量最高1.113 mg·g~(-1),5種酚酸之和由高至低依次為嫩枝、木質、樹皮、松針、花序。結論:經方法學驗證,本法可用于雪松不同部位中5種酚酸類成分的含量測定。
[Abstract]:Objective: to establish a method for simultaneous determination of Gallic acid, protocatechuic acid, catechin, caffeic acid and ferulic acid in cedar, and to apply them to different parts of cedar (pine needle, inflorescence, shoot, xylem). Determination of the five phenolic acids. Methods: an Eclipse Plus-C18 column (250mm 脳 4.6mm ~ 5 渭 m) was used with acetonitrile (A) -0.1% phosphoric acid solution (B) as mobile phase, gradient elution (0 ~ 6 min ~ 7A ~ 670 min ~ 7A ~ (20) A), flow rate 1.0 mL 路min ~ (-1), detection wavelength: 280nm, column temperature: 25 鈩,
本文編號:2137606
[Abstract]:Objective: to establish a method for simultaneous determination of Gallic acid, protocatechuic acid, catechin, caffeic acid and ferulic acid in cedar, and to apply them to different parts of cedar (pine needle, inflorescence, shoot, xylem). Determination of the five phenolic acids. Methods: an Eclipse Plus-C18 column (250mm 脳 4.6mm ~ 5 渭 m) was used with acetonitrile (A) -0.1% phosphoric acid solution (B) as mobile phase, gradient elution (0 ~ 6 min ~ 7A ~ 670 min ~ 7A ~ (20) A), flow rate 1.0 mL 路min ~ (-1), detection wavelength: 280nm, column temperature: 25 鈩,
本文編號:2137606
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