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本文对枸杞红色素的稳定性进行了初步研究,研究发现枸杞红色素40℃以下比较稳定;还原剂(Na2SO3)对枸杞红色素稳定性影响不大,光照、高温、氧化剂(双氧水)能大大降低构杞红色素的稳定性;枸杞红色素在酸性、中性、弱碱性的环境中比较稳定,在强碱性环境中稳定性较差;Fe3+、Cu2+、Fe2+等金属离子对枸杞红色素稳定性影响较大,Ca2+、Na+等金属离子对枸杞红色素稳定性影响不大;枸杞红色素在酸奶和果汁中应用情况较好. 相似文献
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3种枸杞的HPLC-DAD图谱比较 总被引:8,自引:1,他引:8
以甜菜碱和类胡萝卜素为主要活性成分的枸杞提取物为基础,使用液相色谱与二极管列阵检测器联用仪(HPLC DAD),给出了3种枸杞的HPLC DAD的化学指纹图谱,并进行了比较 说明可以用中药材化学指纹图谱来进行枸杞品种的识别和真伪的鉴定 相似文献
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SU Miao-shang XUE Si-chen XU Li REN Xi-kai HUANG Nan TANG Zhu-qin XU Man-huan 《园艺学报》2021,36(12):2212-2219
AIM To investigate the effect of intermittent hypoxia (IH) on bladder detrusor cells apoptosis and calcium channel, and to discuss the regulatory mechanism of Alpiniae oxyphyllae Fructus (AOF). METHODS IH model of bladder detrusor cells was established by treating the cells with 6 cycles of 5% O2 for 60 min and 20% O2 for 30 min. Human bladder detrusor cells were cultured in vitro , randomly divided into 6 groups, each group had 8 holes. P2X3 receptor antagonist + IH (A) group, M3 receptor antagonist + IH (B) group, β3 receptor antagonist + IH (C) group, AOF + IH (D) group, saline + IH control (NC) group and air simulation control (AC) group were set up. The cells density and morphology were identified by the methods of counting chamber and immunofluorescence light microscopy (LM) after interventions. The apoptosis was analyzed by flow cytometry. Calcium channel expression was detected by patch clamp. RESULTS (1) Compared with the cells in AC group, the cells density and activity were significantly increased in NC group (P <0.05); some cells appeared protrusions, turned round and blur in cell borders. (2) The results of immunofluorescence for detecting α-SMA protein expression showed that, compared with the cells in group AC, the mean absorbance (MA ) in group NC was significantly increased (F =3.25, P <0.05); compared with the cells in group NC, that in group A and group D was both decreased significantly (P <0.05). (3) Compared with the cells in group AC, the apoptotic rate was significantly decreased in group NC (P <0.05); Compared with the cells in group NC, the apoptotic rates in group A and group D were both significantly increased (P >0.05). (4) Compared with the cells in group AC, calcium ion channel expression was significantly decreased (P <0.05). Compared with the cells in group NC, calcium ion channel expression in AOF (100 mg/L) and AOF (50 mg/L) group was significantly increased (P <0.05). CONCLUSION IH regulates bladder detrusor cells proliferation and apoptosis through P2X3 bladder nerve receptors, high or moderate dose of AOF may change calcium channel and play a protective role in IH induced cell damage. 相似文献
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为获得商洛五味子组培快繁的中间材料,选用幼嫩的商洛五味子茎尖、叶片、叶柄为外植体,探讨不同激素(2,4-D,NAA,6-BA)对3种外植体愈伤组织诱导的影响。结果表明:3种外植体愈伤组织诱导的最佳激素配比均为2,4-D 0.5mg/L+NAA 0.1mg/L+6-BA 1.0mg/L。该配方处理下,茎尖诱导率达73.3%,愈伤组织呈绿色,质地致密,生长旺盛;叶柄诱导率达60.0%,愈伤组织呈淡绿色,质地较紧密,生长旺盛;叶愈伤组织诱导率相对较低(53.3%),诱导时间较长,3周后出现愈伤组织,呈绿色。商洛五味子茎尖为愈伤组织诱导的最佳外植体。 相似文献
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菌痢消颗粒是由黄连、诃子、苦参、白头翁、甘草等中药制成的纯中药制剂,具有清热燥湿,泻火解毒,涩肠止泻之功效。在对本品的质量标准研究中,本文重点进行了薄层色谱研究,选择了多种展开系统进行比较。结果显示,采用《中国兽药典》收载方法及展开系统对本方中黄连、诃子、苦参进行薄层色谱鉴别,斑点清晰,方法可行。 相似文献