This study aims to extract an active heteropolysaccharide Chia seed polysaccharide (CSP-A) and further purified by DEAE Sepharose Fast Flow and Sepharose CL-6B chromatographic column, characterize its structure, and evaluate its antioxidant and immunomodulatory activities. Structural analysis revealed that CSP-A was composed of d-mannose, d-glucuronic acid and d-xylose in a molar ratio of 1:3:4 with molecular weight of 1.688 × 105 Da, owning 4 sugar residues of β-d-Manp-(1→, →4)-α-d-GlcpA-(1→, →2,4)-β-d-Xylp-(1→, and → 4)-β-d-Manp-(1 →. Congo red assay and microscopic characteristics showed that CSP-A in its solution may possess a helical conformation. In vitro experiments showed that CSP-A had moderate DPPH· and OH· scavenging activities. CSP-A also enhanced the phagocytosis ability of RAW 264.7 cells and prompted the release of NO, TNF-α, IL-6 and IL-1β from RAW 264.7 cells, which indicated CSP-A had immune regulation effect. This experiment provides scientific basis for further utilization and development of chia seeds, a kind of functional food.

目的采用超高效液相色谱-四级杆-飞行时间质谱（UPLC-Q-TOF/HRMS E ）技术对活血解毒方中的化学成分进行研究。方法采用ACQUITY UPLC BEH C 18 色谱柱（100 mm×2.1 mm,1.8μm）,以0.1%甲酸溶液（A）和0.1%甲酸乙腈（B）作为流动相进行梯度洗脱,体积流量为0.3 mL/min,采用ESI源在正、负离子模式下采集数据。根据化合物精确相对分子质量及二级特征碎片离子信息,结合参考文献数据与UNIFI数据库,鉴定活血解毒方的主要化学成分。结果从活血解毒方中鉴定出66个化学成分,其中黄酮类化合物8个、生物碱类化合物7个、酚类化合物6个、皂苷类化合物30个、木质素类化合物6个、萜类化合物4个和其他类化合物5个。结论建立的UPLC-Q-TOF/HRMS E 联用技术与UNIFI结合法能够系统、快速、准确地鉴定多种化学成分,为其质量评价指标选择及药效物质基础深入研究提供了参考。

商陆是中国传统的中药材,近年来,对商陆的研究逐渐深入,其有效成分及药理作用倍受关注,在治疗多种疾病方面具有广泛的应用前景.商陆主要含有的化学成分包括三萜皂苷、多糖、黄酮和酚酸等,现代药理学研究发现其具有利尿、调节免疫、祛痰等作用.在此研究基础上,根据中药质量标志物的定义,本文从传统功效、传统药性、临床新用途、可测成分、炮制前后成分变化及入血成分等几个方面对商陆的质量标志物进行预测分析,为商陆质量评价研究提供科学依据.

Periplocae Cortex is a traditional Chinese medicine in China, which is mainly produced in northeast China, north China, northwest China, southwest China. In recent years, the increasing in-depth research resulted in the discovery of anti-tumor and cardiac pharmacological activities of Periplocae Cortex, which has broad application prospects. On the basis of summarizing chemical components and pharmacological effects, combined with the theoretical system of Q-marker, the quality control components of Periplocae Cortex were predicted from the aspects of the correlation between chemical composition and traditional medicinal properties, traditional efficacy, and new clinical use, plasma composition, measurable composition, storage time by analyzing literature. Among the components, periplocoside, periplocin, periplogenin, 4-methoxy salicylaldehyde showed significant activity, which provides a scientific basis for quality evaluation of Periplocae Cortex.