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半枝莲标准汤剂的指纹图谱建立与抗氧化活性成分的化学模式

        识别     Δ


              *
        杜义龙 ,李 赛,李艳荣,潘海峰(承德医学院河北省中药研究与开发重点实验室,河北 承德 067000)
                                     #
        中图分类号 R284.1         文献标志码 A           文章编号 1001-0408(2022)04-0425-08
        DOI  10.6039/j.issn.1001-0408.2022.04.08

        摘  要   目的 测定半枝莲标准汤剂中总黄酮的含量,评价其体外抗氧化活性,建立其指纹图谱,并进行化学模式识别分析。方法
        采用紫外-可见分光光度法测定半枝莲标准汤剂中总黄酮含量(以野黄芩素计);采用1,1-二苯基-2-三硝基苯肼(DPPH)自由基、
        2,2′-联氮-二(3-乙基-苯并噻唑-6-磺酸)二铵盐(ABTS)自由基清除实验考察半枝莲标准汤剂的体外抗氧化活性;采用高效液相色
        谱(HPLC)法,以野黄芩苷峰为参照峰,采用《中药色谱指纹图谱相似度评价系统(2004A版)》绘制16批半枝莲标准汤剂的指纹图
        谱并进行相似度评价,确定共有峰;采用SPSS 24.0软件进行Pearson相关性分析,筛选具有体外抗氧化活性的潜在物质,并以其为
        变量,采用SPSS 24.0、SIMCA 14.1软件进行聚类分析和主成分分析。结果 总黄酮检测质量浓度的线性范围为2.106~21.06 μg/mL
          2
       (R =0.999 3);精密度、重复性、稳定性(120 min)试验的RSD均小于2%;加样回收率为100.62%(RSD=0.55%,n=6);总黄酮含
        量为0.634~1.053 mg/mL。DPPH自由基清除实验的半数抑制浓度(IC50 )为1.120~3.602 mg/mL,ABTS自由基清除实验的IC50为
        0.684~1.327 mg/mL;相关性分析结果显示,半枝莲标准汤剂中总黄酮含量与DPPH自由基、ABTS自由基清除实验的IC50均呈负
        相关,相关系数分别为-0.976、-0.940(P<0.01)。16批半枝莲标准汤剂共有18个共有峰,相似度为0.964~0.997;共指认出其中
        4个共有峰,分别为野黄芩苷(8号峰)、野黄芩素(14号峰)、木犀草素(15号峰)、芹菜素(17号峰)。半枝莲标准汤剂HPLC指纹图
        谱中3~4、8~9、12~15、17号峰峰面积与DPPH自由基、ABTS自由基清除实验的IC50均呈显著负相关(P<0.05或P<0.01)。聚
        类分析结果显示,16批半枝莲标准汤剂可聚为两类,其中S2、S7~S8、S14~S16为一类,S1、S3~S6、S9~S13为一类;主成分分析
        将16批半枝莲标准汤剂分为两类,其中S2、S4、S7、S14~S16为一类,S1、S3、S5~S6、S8~S13为一类,S4、S13、S15样品的综合评
        分较高。结论 所建HPLC指纹图谱及化学模式识别分析方法可用于评价半枝莲标准汤剂的质量;3~4、8~9、12~15、17号峰及
        总黄酮是半枝莲标准汤剂清除DPPH自由基和ABTS自由基的潜在物质基础。
        关键词 半枝莲;标准汤剂;总黄酮;体外抗氧化作用;指纹图谱;主成分分析;聚类分析

        Fingerprint establishment of Scutellaria barbata standard decoction and chemical pattern recognition of
        antioxidant components
        DU Yilong,LI Sai,LI Yanrong,PAN Haifeng(Hebei Key Laboratory of Traditional Chinese Medicine Research
        and Development,Chengde Medical University,Hebei Chengde 067000,China)

        ABSTRACT    OBJECTIVE To determine the contents of total flavonoids in Scutellaria barbata standard decoction,evaluate in
        vitro antioxidant activity,establish the fingerprint and conduct chemical pattern recognition analysis. METHODS The contents of
        total flavonoids in S. barbata standard decoction(calculated by scutellarein)were determined by ultraviet-visible spectrophotometry.
        In vitro antioxidant activity of S. barbata standard decoction was investigated by free radical scavenging tests of 1,1-diphenyl-
        2-trinitrophenylhydrazine (DPPH) and 2,2′-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) ammonium salt(ABTS);HPLC
        method was adopted. Using scutellarin as reference,the fingerprints of 16 batches of S. barbata standard decoction were drawn and
        evaluated by Similarity Evaluation System of TCM Chromatogram Fingerprint (2004 A edition),and the common peaks were
        determined;Pearson correlation analysis was carried out by using SPSS 24.0 software to screen substances with in vitro antioxidant
        activity. Taking them as variables,cluster analysis and principal component analysis were carried out by using SPSS 24.0 and
                                                                                  2
        SIMCA 14.1 software. RESULTS The linear range of total flavonoids were 2.106-21.06 μg/mL(R =0.999 3);RSDs of precision,
        reproducibility and stability tests (120 min) were all lower than 2% ;the recovery was 100.62% (RSD=0.55% ,n=6);the
        contents of total flavonoids were 0.634-1.053 mg/mL. Median inhibitory concentration (IC50 ) of DPPH radical scavenging
        experiment ranged 1.120-3.602 mg/mL,and IC50 of ABTS radical scavenging experiment ranged 0.684-1.327 mg/mL. The results of
                                                           correlation analysis showed that the content of total flavonoids
            Δ 基金项目:河北省高校省级重点学科建设项目(No.冀教
                                                           in S. barbata standard decoction was negatively correlated
        高〔2013〕4号);承德医学院自然科学研究计划项目(No.201824)
                                                           with the IC50 of DPPH free radical and ABTS free radical
           *讲师,硕士。研究方向:中药质量控制。电话:0314-2291186。
        E-mail:duyilongww@sina.com                         scavenging experiment,and the correlation coefficients were
            # 通信作者:教授,硕士。研究方向:中药质量控制。电话:                   - 0.976 and - 0.940 respectively(P<0.01). There were 18
        0314-2291186。E-mail:phf2301@163.com                common peaks in the fingerprints of 16 batches of S. barbata


        中国药房    2022年第33卷第4期                                               China Pharmacy 2022 Vol. 33 No. 4  ·425 ·
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