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当归有机酸的低共熔溶剂提取工艺优化及机制研究
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          陈丽元 ,陈志松 ,钱加芬 ,陈新利 ,常伟宇 ,吴 晖 (1.昆明医科大学第一附属医院临床药学中心,昆明
                 1*
          650032;2.昆明医科大学第一附属医院心脏内二科,昆明 650032)
          中图分类号  R284.2      文献标志码  A      文章编号  1001-0408(2025)22-2783-07
          DOI  10.6039/j.issn.1001-0408.2025.22.06
          摘  要  目的  优化当归有机酸的低共熔溶剂(DESs)提取工艺,并进行表征、抗氧化活性评价和提取机制分析。方法  采用基于
          片段活度系数的真实溶剂化模拟的类导体屏蔽模型(COSMO-SAC)筛选DESs种类;以总有机酸含量为响应值,通过单因素实验
          和Box-Behnken响应面法对提取工艺进行优化。以当归饮片和(或)当归甲醇提取物为参照,利用扫描电子显微镜、傅里叶变换红
          外光谱(FTIR)仪对产物进行表征,并进行1,1-二苯基-2-苦肼基(DPPH)、2,2′-联氮-双(3-乙基苯并噻唑啉-6-磺酸)(ABTS)自由基
          清除能力检测。利用量子化学密度泛函理论分析DESs对阿魏酸、绿原酸的提取机制。结果与结论  最适DESs为氧化胆碱-丙二
          醇;当归有机酸最优提取工艺为氯化胆碱-丙二醇摩尔比为1∶1、DESs含水量70%、料液比1∶10、加热温度57 ℃、加热搅拌时间8
          min。3次验证实验的总有机酸含量为2.92 mg/g,与预测值(2.91 mg/g)的相对误差为0.34%。与当归饮片、甲醇提取物相比,DESs
          提取物的团粒结构几乎消失,表面有类似肠壁的褶皱;与甲醇提取物相比,其 FTIR 特征峰强度及峰面积积分更高,对 DPPH、
          ABTS自由基的清除能力均更强。DESs对当归有机酸的提取,是极性匹配、氢键作用及结构适配共同作用的结果。
          关键词  当归;低共熔溶剂;阿魏酸;绿原酸;COSMO-SAC;Box-Behnken响应面法;工艺优化

          Deep  eutectic  solvents-based  extraction  of  organic  acids  from Angelica  sinensis:  process  optimization  and
          mechanistic insights
          CHEN Liyuan ,CHEN Zhisong ,QIAN Jiafen ,CHEN Xinli ,CHANG Weiyu ,WU Hui(1.  Clinical  Pharmacy
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          Center,  the  First  Affiliated  Hospital  of  Kunming  Medical  University,  Kunming  650032,  China;2.  Dept.  of
          Cardiology Ⅱ, the First Affiliated Hospital of Kunming Medical University, Kunming 650032, China)
          ABSTRACT   OBJECTIVE  To  optimize  the  extraction  process  of  organic  acids  from  Angelica  sinensis  using  deep  eutectic
          solvents (DESs),  and  conduct  characterization,  antioxidant  activity  evaluation,  and  extraction  mechanism  analysis.  METHODS
          The  conductor-like  screening  model  for  realistic  solvation  with  segment  activity  coefficients (COSMO-SAC)  was  employed  to
          screen  the  types  of  DESs.  With  total  organic  acid  content  as  the  response  value,  single-factor  experiments  and  Box-Behnken
          response-surface methodology were used to optimize the extraction conditions. Using A. sinensis decoction pieces and/or A. sinensis
          methanol  extract  as  references,  scanning  electron  microscope  and  Fourier  transform  infrared  spectrometer (FTIR)  were  applied  to
          characterize  the  products.  Additionally,  the  1,1-diphenyl-2-picrylhydrazyl (DPPH)  and  2,2′-azino-bis(3-ethylbenzothiazoline-6-
          sulfonic  acid) (ABTS)  free  radical  scavenging  capacities  were  determined.  Density  functional  theory (DFT)  was  used  to  analyze
          the extraction mechanism of ferulic acid and chlorogenic acid by the DESs. RESULTS & CONCLUSIONS The optimal DESs was
          choline chloride-propanediol. The optimal extraction conditions for organic acids from A. sinensis were as follows: choline chloride-
          propanediol molar ratio of 1∶1, DESs water content of 70%, solid-liquid ratio of 1∶10, heating temperature of 57 ℃, and heating
          and stirring time of 8 min. In three validation experiments, the total organic acid content was 2.92 mg/g, yielding a relative error of
          0.34%  compared  to  the  predicted  value (2.91  mg/g).  Compared  with  A.  sinensis  decoction  pieces  and  methanol  extracts,  the
          agglomerated structure of the DESs extract powder almost disappeared, showing the presence of lamellar structures similar to those
          of the intestinal wall. Compared with the methanol extract, the DES extract exhibited higher FTIR characteristic peak intensity and
          peak  area  integration,  as  well  as  stronger  scavenging  capacities  against  DPPH  and ABTS  free  radicals.  The  extraction  of  organic
                                                             acids  from  A.  sinensis  by  DESs  is  the  result  of  the  combined
             Δ 基金项目 云南省科技厅科学技术项目-中青年学术和技术带头
          人后备人才项目(No.202305AC160016);云南省临床药学中心建设单            effects  of  polarity  matching,  hydrogen  bonding,  and  structural
          位项目(No.2023LCYXZ013)                               adaptation.
             *第一作者 主管药师,硕士。研究方向:制剂研发、医院药学。                   KEYWORDS     Angelica  sinensis;  deep  eutectic  solvents;
          E-mail:1070162150@qq.com
                                                             ferulic  acid;  chlorogenic  acid;  COSMO-SAC;  Box-Behnken
             # 通信作者 主任药师,硕士。研究方向:医院药学。E-mail:
          kyz_ggyx@163.com                                   response-surface methodology; process optimization


          中国药房  2025年第36卷第22期                                              China Pharmacy  2025 Vol. 36  No. 22    · 2783 ·
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