胚乳和外源赤霉素对五味子[Schisandra chinensis (Turcz.) Baill]种子发芽的影响

以组织培养和土壤播种的未经层积处理的五味子种子为材料，检测胚乳和外源赤霉素（GA3）对发芽影响的结果表明，在不加生长调节物质的MS培养基上，去掉外种皮带全胚乳的种子发芽率只有2．7％，而带1／2和1／3胚乳的种子发芽率则分别为46％和70．6％；培养基中添加GA，，可提高去掉外种皮带全胚乳和带1／2胚乳种子的发芽率，而对带1／3胚乳的种子则无效果。土壤播种时，用10—1000mg·L—GA3对去掉外种皮种子进行1~10d前处理，其中100mg·L—GA3前处理10d的发芽率最高，达到38．7％。

Effects of Different Decolorants on Retention Rate of Total Triterpenes in Fruit and Rattan Stems of Schisandra chinensis(Turcz.) Baill

This study was to investigate the decoloration effects of activated clay, activated carbon, diatomite, Ca group bentonite, kaolin, activated aluminum oxide, magnesium oxide and attapulgite. Ultraviolet-visible spectroscopywas adopted to de- tect the absorbanees of the extracts of Schisandra chinensis fruit and rattan stems, the contents of total triterpenoids in S. chinensis fruit and rattan stems were deter- mined, and the decoloration rate and the retention rate of total triterpenoids of S. chi- nensis fruit and rattan stems were calculated. The results indicated that, attapulgite exhibited the best decoloration effect on the extract of S. chinensis fruit, with a de- coloration rate up to 60.47%, activated carbon exhibited a better decoloration effect on the extract of S. chinensis rattan stems, with a decoloration rate up to 69.24%, and they had relatively higher retention rates of total triterpenoids. In the eight de- colorants, attapulgite showed the best decoloration effect on the extract of S. chi- nensis fruit, and activated carbon exhibited the best decoloration effect on the ex- tract of S. chinensisrattan stems.

Nortriterpenoids from the fruit stalk of Schisandra chinensis (Turcz.) Baill.

Objective:The fruit stalk of Schisandra chinensis(Turcz.)Baill.(S.chinensis)has been found to contain bioactive components similar to the fruit of S.chinensis.Here,we report a recent discovery about new nortriterpenoids with a novel skeleton and anti-gastric cancer activity,which were isolated from the fruit stalk of S.chinensis.Methods:The chemical components of ethyl acetate extract from 70%ethanol extract from S.chinensis fruit stalk were separated,purified,and identified by liquid chromatography methods(silica gel,ODS,HPLC)and extensive spectroscopic analyses(NMR,IR,UV,MS,CD).Results:Two new nortriterpenoids,schilancitrilactone M and 25-hydroxyl schindilactone D(1 and 2),along with ten known nortriterpenoids(3-12)were isolated from the fruit stalk of S.chinensis.The isolated compounds were tested for their cytotoxic activities against MGC-803 cells,and the results showed that compounds 6-8 possessed significant activities with IC50 of 9.01,11.77,and 2.74μmol/L,respectively.Conclusion:Twelve nortriterpenoids including two new compounds were isolated from the fruit stalk of S.chinensis for the first time.Among them,compounds 6-8 showed significant anti-gastric cancer activities.We postulated that the fruit stalk of S.chinensis could be used as an anti-gastric cancer drug.

Schisandra chinensis (Turcz.) Baill

Schisandra chinensis (Turcz.) Baill. is a deciduous woody vine, and belongs to the Schisandraceae family. This species is a horticultural plant with edible fruit. It is used medicinally and for making rope. It is distributed in Hebei, Heilongjiang, Jilin, Liaoning, Nei Mongol, Shanxi

Optimization of Callus Induction Medium for Schisandga chinensis Baill via Uniform Design

[Objective]This study was to optimize callus induction medium for Schisandga chinensis Baill.[Method]Using callus induction rate as an indicator,uniform design was employed to optimize hormone combination at poly-factors and poly-levels for callus induction from Schisandga chinensis Baill.[Results]Optimal hormone combinations depended on different explants：optimum medium for both tender leaf and petiole was MS ＋3 mg/L 6-BA,for stem segment was MS ＋3 mg/L 6-BA ＋0.6 mg/L NAA.[Conclusion]Uniform design is a time-saving and convenient method for the optimum medium for callus and yields a higher callus induction rate.

Analysis of Essential Oil from Stems of Schisandra Chinensis(Turc z.) Baill

The essential oil of Schisandra Chinensis(Turc z.) Baill was extracted and analyzed. The essential oil was obtained in a 1.8%(mL/100 g material) yield. Forty eight compounds were isolated and characterized from the oil. The results show that the content(20.42%) of β -pinene of naturally essential oil is the highest among the components of the oil,which has laid a foundation for the futher development and application of the stems of Schisandra Chinensis(Turc z.) Baill .

指纹图谱技术结合化学计量学评价五味子醇提物质量探索研究

目的:优化五味子乙醇提取工艺,建立其醇提物HPLC指纹图谱并结合化学计量学综合分析其质量。方法:基于单因素试验,采用L9(34)正交试验设计,系统研究了乙醇浓度、提取时间、提取次数及料液比等因素对五味子中五味子醇甲和五味子乙素的提取率产生的影响。按最优提取工艺制备9批五味子乙醇提取物,建立其高效液相色谱(HPLC)指纹图谱。以共有峰峰面积为变量,结合化学计量学方法包括系统聚类分析(HCA)、主成分分析(PCA)法对9批五味子醇提物质量进行分析。结果:确定最佳提取工艺为:采用80%乙醇作为溶剂,料液比为1:10,进行2次回流提取,每次持续1 h。在9批五味子提取物指纹图谱中共有32个共有峰,并成功鉴定出X18(五味子醇甲)、X29(五味子甲素)和X32(五味子乙素),相似度高于0.94。HCA和PCA结果均显示9批样品有聚为四类的趋势,共有峰X1、X2、X3、X13、X17、X19、X21和X30是引起样品间差异的主要化学成分。结论:所优选的提取工艺稳定可行,不同批次五味子提取物的质量一致性较高,但不同样品间仍存在一定差异。

Transcriptome-wide analysis of PIP reductase gene family identified a phenylpropene synthase crucial for the biosynthesis of dibenzocyclooctadiene lignans in Schisandra chinensis

Phenylpropenes,such as isoeugenol and eugenol,are produced as defend compounds,floral attractants,and flavor constituents by phenylpropene synthases belonging to the PIP reductase family.Moreover,isoeugenol is proposed to be involved in the biosynthesis of dibenzocyclooctadiene lignans,the main active compounds of Schisandra chinensis(Turcz.)Baill.fruits(SCF).S.chinensis,a woody vine plant,is widely used for its medicinal,horticultural,edible,and economic values.In this study,nine ScPIP genes were identified and characterized from the transcriptome datasets of SCF.The expression profiles revealed that ScPIP genes were differentially expressed during different developmental stages of SCF.Three ScPIPs were selected and cloned as candidate genes encoding phenylpropene synthases according to phylogenetic analysis.ScPIP1 was proved to function as isoeugenol synthase(IGS)and designated as ScIGS1 through in vivo functional characterization in Escherichia coli.Subcellular localization analysis demonstrated that ScIGS1 was localized in both the cytoplasm and nucleus.The three-dimensional(3D)model of ScIGS1 was obtained using homology modeling.Site-directed mutagenesis experiments revealed that the substitution of residues at positions 110 and 113 impacted the product specificity of ScIGS1 and the mutation of Lys157 to Ala abolishing catalytic function.Moreover,the kcat values of mutants were lower than that of ScIGS1 using a deep learning approach.In conclusion,this study provides a basis for further research on PIP reductases and the biosynthetic pathway of dibenzocyclooctadiene lignans.

不同颜色百蕊草种子生物学特性研究

为探究不同种皮颜色的百蕊草种子生物学特性,本研究以野生百蕊草种子为实验材料,开展种子表型特征、重量和大小、吸水率和含水量、生活力和萌发率、贮藏物质及生物酶活性等方面研究。结果表明,百蕊草黄色种子生物学特性指标表现较好,生活力94.51%、长2.69 mm、宽2.04 mm、厚2.03 mm,百粒重0.5406 g、五百粒重2.7072 g、裂口率45.90%。黄色种子可溶性蛋白含量最高为2.13 mg/g,显著(p<0.05)高于绿色种子;绿色种子可溶性糖和粗脂肪含量最高分别为8.75 mg/g和0.36 g/g;黄色种子POD酶、β-淀粉酶含量最高分别为204.33 U/g和11.83 U/g;黄绿色种子SOD含量为13201.83 U/g,显著(p<0.05)高于绿色种子;绿色种子的CAT含量最高为41.46 U/g。本研究初步明确了百蕊草种子的生物学特性,不同种皮颜色(黄色、黄绿色、绿色)的种子其生理指标差异较大,黄色和黄绿色种子萌发特性较好,可为以后百蕊草种子采收和制定质量标准提供依据。

复合植物美白面膜的制备研究

本研究分别从三百草中提取黄酮,从石榴中提取有机酸和多酚,从苦参根中提取苦参碱,黄酮和多酚具有抑制酪氨酸酶活性和抗氧化的功效,有机酸具有温和去角质和亮肤的作用,苦参碱具有抗炎的作用,在研究中将其制备为复合植物美白面膜,并进行了配方设计和功效评价。制成的植物复合美白面膜对酪氨酸酶活性的抑制率为87.56%,说明植物复合美白面膜对皮肤黑色素有一定的抑制效果,具有一定美白作用。

三白草地下部分化学成分研究

目的:研究三白草科三白草属植物三白草Saururus chinensis(Lour.) Baill.地下部分的化学成分。方法:采用MCI、硅胶、Sephadex LH-20葡聚糖凝胶等多种色谱技术对三白草地下部分的丙酮提取物进行分离纯化,根据波谱数据鉴定所得化合物的结构。结果:从三白草地下部分中分离得到13个化合物,分别鉴定为:ent-4β-hydroxy-10α-ethoxyaromadendrane(1)、ent-4α-hydroxy-10β-alloaromadendranediol-10-monomethylether(2)、4β-10α-香木兰烷二醇(3)、斯巴醇(4)、meicocarpin(5)、1,4-二(3,4-二甲氧基苯基)-2,3-二甲基-1,4-丁二酮(6)、乙酰樟叶素(7)、(-)-(7R,8R)-7-O-acetylraphidecursinol B(8)、赤式-2-(4-烯丙基-2,6-二甲氧基苯氧基)-1-(3,4,5-三甲氧基苯基)-丙烷-1-醇(9)、saururin C(10)、(-)-5-exo-acefoxybornyl acetate(11)、细辛醚(12)、榄香脂素(13)。结论:其中,化合物1~4、9、11为首次从该植物中分离得到。

Anti-diabetic Effects of Polysaccharides from Ethanol-insoluble Residue of Schisandra chinensis（Turcz.） Baill on Alloxan-induced Diabetic Mice

The ethanol-insoluble residue of Schisandra generated during lignans industrial production is usually treated as solid waste. However, there is active polysaccharide which could be used in it. In this work, the water-soluble polysaccharides from the ethanol-insoluble residue of Schisandra（ESCP） were obtained and their anti-diabetic effect was evaluated. The results indicate that ESCP could significantly reduce the blood glucose level in alloxan-induced diabetic mice. Moreover, the ESCP could significantly improve the lipid metabolism and increase the content of liver glycogen in alloxan-induced diabetic mice. The results indicate that ESCP could be developed into a potential natural hypoglycemic agent.

五味子种子种苗质量分级标准研究

以五味子23批种子和21批种苗为实验材料,测定五味子种子的净度、千粒重、含水量、生活力、发芽情况等5项指标,种苗的苗长、茎粗、根长、根粗、芽数、侧根数、单株重、每100 g种苗数等8项指标,对种子种苗指标信息进行数据分析,初步制定五味子种子种苗质量分级标准。结果表明,以生活力、发芽率为首要指标,含水量、千粒重、净度为次要指标,将五味子种子分为3个等级标准,一级:净度≥96%,千粒重>29.08 g,含水量>6.75%,生活力>98.22%,发芽率>81.33%;二级:净度≥96%,千粒重25.89~29.08 g,含水量6.52%~6.75%,生活力72.55%~98.22%,发芽率11%~81.33%;三级(不合格):净度<96%,千粒重<25.89 g,含水量<6.52%,生活力<72.55%,发芽率<11%;种苗以苗长、根长、芽数、单株重、每100 g种苗数为分级主要指标,将五味子种苗分为4个等级,一级:苗长>58.177 cm,根长>22.047 cm,芽数>17个,单株重>7.873 g,每100 g种苗数<15棵;二级:苗长>34.803~≤58.177 cm,根长>15.935~≤22.047 cm,芽数>12~≤17个,单株重>3.055~≤7.873 g,每100 g种苗数>15~≤31棵;三级:苗长26.453~34.803 cm,根长14.715~15.935 cm,芽数10~12个,单株重1.442~3.055 g,每100 g种苗数>31~≤70棵;四级(不合格):苗长<26.453 cm,根长<14.715 cm,芽数<10个,单株重<1.442 g,每100 g种苗数>70棵。该研究可为五味子种子种苗质量标准制定提供依据,为其良种选育提供参考。

Structural determination of two triterpenoid saponins from Gymnocladus chinensis Baill

Two triterpenoid saponins （compound Ⅰ and Ⅱ） have been isolated from Gymnocladus chinensis Baill., and compound Ⅰ was determined as a new compound. The structure of compound Ⅰ was assigned as 2β,23-dihydroxy-acacic acid-3-O-α-L-arabinopyranosyl-21-O-{（6S）-2-E-2,6-dimethyl-6-O-[4-O-（6S）-2-E- 2,6 -dimethyl-6-O-β-D-glucopyranosyl-α-L-arabinopyranosyl-2,7-octadienoyl} -28-O-β-D-xylopyranosyl（ 1 →3 ）-β-D-xylopymnosyl （ 1→4）- α-L-rhamnopyranosyl（1→2）-[α-L-rhamnopyranosyl-（1→6）]-β-D-glucopyranoside by extensive MS and NMR studies.

不同产地五味子种子挥发油中6个成分含量测定及主成分分析

目的:检测不同产地五味子种子挥发油中α-蒎烯、β-蒎烯、月桂烯、柠檬烯、乙酸龙脑酯和榄香烯的含量。方法:采用水蒸气蒸馏法提取挥发油,气相色谱法(GC)测定挥发油中α-蒎烯、β-蒎烯、月桂烯、柠檬烯、乙酸龙脑酯和榄香烯6个成分含量:采用HP-1701石英毛细管色谱柱(30 m×320μm×1μm),氢火焰离子化检测器,进样口温度为230℃,检测器温度为250℃,柱温以60℃为起始温度,以10℃·min–1升温至125℃,保持5 min,再以10℃·min–1升至150℃,保持2 min;载气为氮气,流速为0.9 mL·min–1;分流进样,分流比为10∶1;进样量为1μL。采用SPSSPRO在线数据处理软件,以五味子种子中6个挥发油成分为指标进行综合评价。结果:各产地五味子种子挥发油中6个成分含量差异较大,α-蒎烯为14.3788~231.3942μg·g^(-1),β-蒎烯为6.5591~86.6224μg·g^(-1),月桂烯为11.8734~143.5263μg·g^(-1),柠檬烯为11.2512~113.3705μg·g^(-1),乙酸龙脑酯为122.8318~722.3651μg·g^(-1),榄香烯为11.7830~72.3607μg·g^(-1)。五味子种子挥发油中6个成分含量排序为乙酸龙脑酯>α-蒎烯>月桂烯>柠檬烯>榄香烯>β-蒎烯。结论:采用GC和SPSSPRO软件主成分分析法可以评价五味子的质量,25个产地仅以挥发油为评价指标,黑龙江省伊春市南岔区的五味子质量较好,吉林省敦化市大蒲柴河镇的五味子质量较差。辽宁省的五味子质量整体优于吉林省。

北五味子的繁殖栽培生理及主要活性成分研究进展

五味子[Schisandra chinensis(Turcz.)Baill.]是木兰科五味子属多年生的木质藤本植物。作为一味大宗道地药材,五味子对许多疾病表现出良好的治疗效果和较低的毒性。在现代医学中研究发现五味子有提高人体免疫力、抗抑郁、抗肿瘤、保护受损神经元,提高记忆力等作用,在医疗领域内应用较为广泛。本文对五味子的应用现状、品种选育、扦插、嫁接、组织培养等繁殖技术,花芽分化、光合特性、植物营养元素等栽培生理,黑斑病、白粉病、女贞细卷蛾等常见的病虫害防治,以及五味子甲素、五味子乙素、多糖、挥发油等活性成分药理研究方面进行综述,并对五味子今后的开发利用前景进行展望。

五味子总木脂素超声波微波协同辅助提取工艺及其主要成分含量

目的 优化五味子中总木脂素的提取工艺,并对其主要成分进行含量测定。方法 以提取时间、料液比、微波功率和超声波功率为单因素,研究各因素对五味子总木脂素得率的影响;在此基础上,按L9(34)设计正交试验,对超声波微波协同辅助提取工艺进行优化;采用超高效液相色谱(ultra-high performance liquid chromatography,UPLC)法对主要成分进行含量测定。结果 五味子总木脂素最优提取工艺为:提取溶剂为80%的乙醇,料液比为1∶20,提取温度为60℃,微波功率为150 W,超声波功率为200 W,提取时间为30 min。在此条件下所得五味子总木脂素的含量和得率分别为48.31%和8.55%,五味子醇甲、五味子醇乙、五味子酯甲、五味子酯乙、五味子甲素、五味子乙素和五味子丙素7个化学成分含量分别为4.22%、1.04%、0.28%、0.88%、1.60%、1.71%和0.05%。结论 该方法准确性及重现性好,提取时间短,效率高,操作简便,可为后续五味子总木脂素功能性及其机制研究提供参考。

总有机碳检测法在五味子提取清洁验证中的应用

为了证明总有机碳(total organic carbon,TOC)检测法可用于中药材五味子提取设备的清洁验证。采用淋洗法与擦拭法取样,并验证TOC检测法的线性、精密度与准确度、检测限(LOD)与定量限(LOQ)、取样回收率与稳定性,评价总有机碳法用于中成药清洁验证的效果。结果表明,五味子浓度(x)在0.024~0.960 mg/L范围内时,其与TOC值(y)呈良好的线性关系,回归方程为y=218.8x-0.033,r 2=0.999;精密度与准确度的相对标准偏差(RSD)均不超过4%;检测限(LOD)为3.84μg/L,定量限(LOQ)为11.5μg/L;采用两种方式取样,在低、中、高浓度淋洗法平均取样回收率分别为63.91%、81.00%、81.11%,擦拭法平均取样回收率分别为87.50%、83.33%、106.94%;样品溶液分别在0、4、8、24、28、48 h进行TOC检测,RSD为5.21%;应用于生产中减压浓缩罐设备残留量计算,结果符合限度浓度要求。TOC法可用于五味子提取生产清洁验证,可广泛应用于多活性成分的中药制药生产。

响应面法优化酶解-超声双辅助双水相体系制备五味子提取物

在单因素实验的基础上,以五味子乙素得率为响应值,采用响应面法优化了酶解-超声双辅助双水相体系制备五味子提取物的工艺条件,并比较了双水相体系、酶辅助双水相体系、超声辅助双水相体系及酶解-超声双辅助双水相体系等方法对五味子乙素的提取效果。结果表明,酶解-超声双辅助双水相体系制备五味子提取物的最佳条件为:乙醇体积分数27.45%、硫酸铵质量分数25.82%、超声时间56 min、液固比30.98∶1(mL∶g),在此条件下,五味子乙素得率为1.77 mg·g^(-1),与模型预测值(1.76 mg·g^(-1))接近;酶解-超声双辅助双水相体系制备的五味子乙素得率显著高于双水相体系、酶辅助双水相体系及超声辅助双水相体系,说明前处理可有效促进双水相体系对五味子乙素的富集。

不同提取方法对北五味子多糖提取率的影响

考察了不同提取方法对北五味子[Schisandra chinensis(Turcz.)Baill]多糖提取率的影响。分别采用回流法、微波辅助法、闪式法对北五味子多糖进行提取,通过可见-分光光度法测定其含量,设计响应面试验对其最佳方法的工艺进行优化。闪式法多糖提取率高于回流法和微波辅助法,其最佳工艺为料液比1∶20(m∶V),提取时间127 s、提取电压190 V、提取温度78℃,在此条件下北五味子多糖的提取率达到20.97%。不同提取方法对多糖的提取率影响较大,闪式法多糖提取率高,耗费时间短,溶剂用量少。