The effect of lanthanum on the growth and extracellular enzyme activity of Erwinia chrysanthemi(Ech) was studied. Lanthanum inhibited the growth of Ech in solid culture at the concentration of 50, 100, 150, 200, 250, ...The effect of lanthanum on the growth and extracellular enzyme activity of Erwinia chrysanthemi(Ech) was studied. Lanthanum inhibited the growth of Ech in solid culture at the concentration of 50, 100, 150, 200, 250, 300 and 350 mgL-1, and the inhibition increased with the increase of the RE concentration. The formation of colony delayed and the diameter of colony decreased. Lanthanum stimulated the growth of Ech within 24h when the lanthanum concentration was less than 200 mgL-1 in liquid medium, but significantly inhibited the growth of Ech with the increase of lanthanum concentration and culture time. When the concentration was higher than 350 mgL-1, the growth of Ech was inhibited completely both in solid and liquid culture. The extracellular enzyme acitivity of Ech was affected by lanthanum at 200 mgL-1. The activity of cellulose was promoted more than that of protease but the activity of pectinase was decreased. The maceration to potato tuber tissue decreased when the cell free filtrate was tr展开更多
Pectobacterium chrysanthemi is one of the main pathogens of soft rot disease of Amorphophallus konjac.The bacteriostatic effect of extracts from 10 kinds of traditional Chinese medicine and garlic on Pectobacterium ch...Pectobacterium chrysanthemi is one of the main pathogens of soft rot disease of Amorphophallus konjac.The bacteriostatic effect of extracts from 10 kinds of traditional Chinese medicine and garlic on Pectobacterium chrysanthemi was studied in this experiment.The results showed that the extracts of Coptis chinensis,garlic,Scutellaria baicalensis,Mume Fructus and Bupleurum had significant bacteriostatic effect.Among them,Coptis chinensis and garlic had the best bacteriostatic effect on Pectobacterium chrysanthemi,and the diameter of inhibition zone was 2.27 and 2.19 cm,respectively,followed by Scutellaria baicalensis,with the diameter of inhibition zone of 1.68 cm.The extracts of Coptis chinensis,Scutellaria baicalensis and garlic with good bacteriostatic effect were diluted by double dilution method,and the bacteriostatic effect was determined.The results showed that 2-fold dilution of Coptis chinensis and 2-fold and 4-fold dilution of Scutellaria baicalensis had significant bacteriostatic effect,but the bacteriostatic effect of garlic extract was not obvious after dilution.展开更多
Objective To establish a RP-HPLC fingerprinting analysis method for quality evaluation and control of the four variants of Chrysanthemi Morifoli Flos.Methods RP-HPLC was used to establish the fingerprinting method.Res...Objective To establish a RP-HPLC fingerprinting analysis method for quality evaluation and control of the four variants of Chrysanthemi Morifoli Flos.Methods RP-HPLC was used to establish the fingerprinting method.Results Despite of the similarity in terms of holistic HPLC chromatograms,the four variants of Chrysanthemi Morifoli Flos exhibit characteristic fingerprints and can be readily recognized by similarity clusters.Conclusion A simple and reliable HPLC fingerprinting method has been developed and validated to authenticate the four variants of Chrysanthemi Morifoli Flos,providing a scientific basis for quality control of Chrysanthemi Morifoli Flos.展开更多
Objective:The purpose of this study is to investigate the anti-diabetic effects of linarin,a flavonoid extracted from Chrysanthemi Indici Flos(CIF),and its potential mechanisms.Methods:The effects of linarin on cell v...Objective:The purpose of this study is to investigate the anti-diabetic effects of linarin,a flavonoid extracted from Chrysanthemi Indici Flos(CIF),and its potential mechanisms.Methods:The effects of linarin on cell viability and glucose consumption in Hep G2 cells were measured.Meanwhile,monosodium glutamate(MSG) mouse model was constructed to monitor the changes of insulin tolerance,glucose tolerance,triglyceride and cholesterol.The protein expression levels of pAMPK,p-ACC,PEPCK and p-GS were detected by Western blot.Results:Linarin could increase the relative glucose consumption of Hep G2 cells,improve insulin tolerance and glucose tolerance,and decrease the levels of triglyceride and cholesterol of MSG mice.Simultaneously,the expression levels of p-AMPK and p-ACC in Hep G2 cells and the liver tissue of MSG mice were increased,while the expression levels of PEPCK and p-GS were decreased after treatment with linarin.Conclusion:Insulin resistance could be ameliorated by linarin in type 2 diabetes,and its mechanism may be related to AMPK signaling pathway.展开更多
目的:基于网络药理学探究枸杞子-菊花药对治疗糖尿病视网膜病变(diabetic retinopathy, DR)的干预机制。方法:利用中药系统药理学数据库与分析平台(traditional Chinese medicine systems pharmacology database and analysis platform,...目的:基于网络药理学探究枸杞子-菊花药对治疗糖尿病视网膜病变(diabetic retinopathy, DR)的干预机制。方法:利用中药系统药理学数据库与分析平台(traditional Chinese medicine systems pharmacology database and analysis platform, TCMSP)检索枸杞子、菊花的活性成分及相关靶点。利用Cytoscape 3.9.1绘制“药对-活性成分-作用靶点”网络图,并进行拓扑分析筛选枸杞子-菊花药对治疗DR的主要活性成分。利用GeneCards数据库、在线人类孟德尔遗传数据库及药物靶标数据库检索DR相关靶点。将活性成分相关靶点与疾病靶点导入Venny 2.1在线平台,绘制韦恩图,交集靶点即为枸杞子-菊花药对治疗DR的潜在靶点。将潜在靶点上传至STRING数据库构建PPI网络关系,导入Cytoscape 3.9.1软件进行可视化,PPI网络拓扑分析筛选枸杞子-菊花药对治疗DR的核心靶点。将核心靶点输入Metascape在线平台进行基因本体(gene ontology, GO)富集分析及京都基因与基因组百科全书(kyoto encyclopedia of genes and genomes, KEGG)信号通路富集分析。将活性成分、核心靶点、信号通路导入Cytoscape 3.9.1软件构建“活性成分-作用靶点-信号通路-DR”网络图。结果:利用TCMSP数据库得到52种活性成分及247个相关靶点。“枸杞子菊花药对-活性成分-作用靶点”网络分析筛选出槲皮素、β-谷甾醇、山柰酚等为枸杞子-菊花药对治疗DR的主要活性成分。检索得到DR相关靶点2 347个,枸杞子-菊花药对治疗DR的潜在靶点133个。PPI网络分析筛选出蛋白激酶Bα(protein kinase Bα,AKT1)、半胱氨酸天冬氨酸蛋白酶3(caspase-3,CASP3)、基质金属蛋白酶-9(matrix metalloproteinase-9,MMP-9)、前列腺素内过氧化物合酶2(prostaglandin-endoperoxide synthase 2,PTGS2)等为核心靶点。GO富集分析得到生物过程919个、细胞组分23个、分子功能47个。KEGG信号通路富集分析得到134条信号通路。“活性成分-作用靶点-信号通路-DR”网络分析发现枸杞子-菊花药对通过槲皮素、β-谷甾醇、山柰酚等活性成分作用于PTGS2、CASP3、AKT1等靶点调控糖尿病并发症中的AGE-RAGE信号通路、IL-17信号通路、TNF信号通路、PI3K-AKT信号通路、MAPK信号通路等进而改善DR。结论:枸杞子-菊花药对通过多成分、多靶点、多通路作用于DR。展开更多
以菊花(Flos Chrysanthemi)、桑(Morus alba L.)叶和优质奶粉为原料,配以蔗糖,研究了发酵生产天然保健型酸奶的工艺条件以及桑菊提取液的制备方法,并对产品质量作出评价。通过单因素试验和正交试验确定了桑菊酸奶发酵的最佳工艺条件为:...以菊花(Flos Chrysanthemi)、桑(Morus alba L.)叶和优质奶粉为原料,配以蔗糖,研究了发酵生产天然保健型酸奶的工艺条件以及桑菊提取液的制备方法,并对产品质量作出评价。通过单因素试验和正交试验确定了桑菊酸奶发酵的最佳工艺条件为:桑、菊提取液添加量25%(桑叶提取液10%、菊花提取液15%)(V/V),蔗糖添加量7%(W/V),凝固剂CMC-Na添加量0.1%(W/V),接种量5%(保加利亚乳杆菌2%、嗜热链球菌3%)(V/V)。展开更多
文摘The effect of lanthanum on the growth and extracellular enzyme activity of Erwinia chrysanthemi(Ech) was studied. Lanthanum inhibited the growth of Ech in solid culture at the concentration of 50, 100, 150, 200, 250, 300 and 350 mgL-1, and the inhibition increased with the increase of the RE concentration. The formation of colony delayed and the diameter of colony decreased. Lanthanum stimulated the growth of Ech within 24h when the lanthanum concentration was less than 200 mgL-1 in liquid medium, but significantly inhibited the growth of Ech with the increase of lanthanum concentration and culture time. When the concentration was higher than 350 mgL-1, the growth of Ech was inhibited completely both in solid and liquid culture. The extracellular enzyme acitivity of Ech was affected by lanthanum at 200 mgL-1. The activity of cellulose was promoted more than that of protease but the activity of pectinase was decreased. The maceration to potato tuber tissue decreased when the cell free filtrate was tr
文摘Pectobacterium chrysanthemi is one of the main pathogens of soft rot disease of Amorphophallus konjac.The bacteriostatic effect of extracts from 10 kinds of traditional Chinese medicine and garlic on Pectobacterium chrysanthemi was studied in this experiment.The results showed that the extracts of Coptis chinensis,garlic,Scutellaria baicalensis,Mume Fructus and Bupleurum had significant bacteriostatic effect.Among them,Coptis chinensis and garlic had the best bacteriostatic effect on Pectobacterium chrysanthemi,and the diameter of inhibition zone was 2.27 and 2.19 cm,respectively,followed by Scutellaria baicalensis,with the diameter of inhibition zone of 1.68 cm.The extracts of Coptis chinensis,Scutellaria baicalensis and garlic with good bacteriostatic effect were diluted by double dilution method,and the bacteriostatic effect was determined.The results showed that 2-fold dilution of Coptis chinensis and 2-fold and 4-fold dilution of Scutellaria baicalensis had significant bacteriostatic effect,but the bacteriostatic effect of garlic extract was not obvious after dilution.
文摘Objective To establish a RP-HPLC fingerprinting analysis method for quality evaluation and control of the four variants of Chrysanthemi Morifoli Flos.Methods RP-HPLC was used to establish the fingerprinting method.Results Despite of the similarity in terms of holistic HPLC chromatograms,the four variants of Chrysanthemi Morifoli Flos exhibit characteristic fingerprints and can be readily recognized by similarity clusters.Conclusion A simple and reliable HPLC fingerprinting method has been developed and validated to authenticate the four variants of Chrysanthemi Morifoli Flos,providing a scientific basis for quality control of Chrysanthemi Morifoli Flos.
基金supported by the National Natural Science Foundation of China (grant numbers 81273392)the Natural Science Foundation of Henan Province (grant numbers 182300410348)
文摘Objective:The purpose of this study is to investigate the anti-diabetic effects of linarin,a flavonoid extracted from Chrysanthemi Indici Flos(CIF),and its potential mechanisms.Methods:The effects of linarin on cell viability and glucose consumption in Hep G2 cells were measured.Meanwhile,monosodium glutamate(MSG) mouse model was constructed to monitor the changes of insulin tolerance,glucose tolerance,triglyceride and cholesterol.The protein expression levels of pAMPK,p-ACC,PEPCK and p-GS were detected by Western blot.Results:Linarin could increase the relative glucose consumption of Hep G2 cells,improve insulin tolerance and glucose tolerance,and decrease the levels of triglyceride and cholesterol of MSG mice.Simultaneously,the expression levels of p-AMPK and p-ACC in Hep G2 cells and the liver tissue of MSG mice were increased,while the expression levels of PEPCK and p-GS were decreased after treatment with linarin.Conclusion:Insulin resistance could be ameliorated by linarin in type 2 diabetes,and its mechanism may be related to AMPK signaling pathway.
文摘目的:基于网络药理学探究枸杞子-菊花药对治疗糖尿病视网膜病变(diabetic retinopathy, DR)的干预机制。方法:利用中药系统药理学数据库与分析平台(traditional Chinese medicine systems pharmacology database and analysis platform, TCMSP)检索枸杞子、菊花的活性成分及相关靶点。利用Cytoscape 3.9.1绘制“药对-活性成分-作用靶点”网络图,并进行拓扑分析筛选枸杞子-菊花药对治疗DR的主要活性成分。利用GeneCards数据库、在线人类孟德尔遗传数据库及药物靶标数据库检索DR相关靶点。将活性成分相关靶点与疾病靶点导入Venny 2.1在线平台,绘制韦恩图,交集靶点即为枸杞子-菊花药对治疗DR的潜在靶点。将潜在靶点上传至STRING数据库构建PPI网络关系,导入Cytoscape 3.9.1软件进行可视化,PPI网络拓扑分析筛选枸杞子-菊花药对治疗DR的核心靶点。将核心靶点输入Metascape在线平台进行基因本体(gene ontology, GO)富集分析及京都基因与基因组百科全书(kyoto encyclopedia of genes and genomes, KEGG)信号通路富集分析。将活性成分、核心靶点、信号通路导入Cytoscape 3.9.1软件构建“活性成分-作用靶点-信号通路-DR”网络图。结果:利用TCMSP数据库得到52种活性成分及247个相关靶点。“枸杞子菊花药对-活性成分-作用靶点”网络分析筛选出槲皮素、β-谷甾醇、山柰酚等为枸杞子-菊花药对治疗DR的主要活性成分。检索得到DR相关靶点2 347个,枸杞子-菊花药对治疗DR的潜在靶点133个。PPI网络分析筛选出蛋白激酶Bα(protein kinase Bα,AKT1)、半胱氨酸天冬氨酸蛋白酶3(caspase-3,CASP3)、基质金属蛋白酶-9(matrix metalloproteinase-9,MMP-9)、前列腺素内过氧化物合酶2(prostaglandin-endoperoxide synthase 2,PTGS2)等为核心靶点。GO富集分析得到生物过程919个、细胞组分23个、分子功能47个。KEGG信号通路富集分析得到134条信号通路。“活性成分-作用靶点-信号通路-DR”网络分析发现枸杞子-菊花药对通过槲皮素、β-谷甾醇、山柰酚等活性成分作用于PTGS2、CASP3、AKT1等靶点调控糖尿病并发症中的AGE-RAGE信号通路、IL-17信号通路、TNF信号通路、PI3K-AKT信号通路、MAPK信号通路等进而改善DR。结论:枸杞子-菊花药对通过多成分、多靶点、多通路作用于DR。
文摘以菊花(Flos Chrysanthemi)、桑(Morus alba L.)叶和优质奶粉为原料,配以蔗糖,研究了发酵生产天然保健型酸奶的工艺条件以及桑菊提取液的制备方法,并对产品质量作出评价。通过单因素试验和正交试验确定了桑菊酸奶发酵的最佳工艺条件为:桑、菊提取液添加量25%(桑叶提取液10%、菊花提取液15%)(V/V),蔗糖添加量7%(W/V),凝固剂CMC-Na添加量0.1%(W/V),接种量5%(保加利亚乳杆菌2%、嗜热链球菌3%)(V/V)。