Study on Accumulation and Decrease Law of Phenolic Acids in Soil of Cultivation Base ofCoptis chinensis / 世界科学技术-中医药现代化

This study was aimed to establish a method to determine the content of phenolic acids in the soil of cultivation base ofCoptis chinensis, in order to study the accumulation and decrease law of phenolic acids. The content of total phenolic acid was determined by ferric chloride-ferricyanatum calcium colorimetric method. Thecontent of ferulic acid in Coptis chinensis was determined by HPLC. The results showed that the contents of total phenolic acid and ferulic acid in the soil of cultivation base of Coptis chinensis were in the range from 0.545-0.026 mg·g-1 and 0.139 to 0.652 μg·g-1, respectively. It was concluded that the variation of phenolic acids in the soil of cultivation base ofCoptis chinensis was obvious. With the increase of growth age of Coptis chinensis, the contents of total phenolic acid and ferulic acid in the soil of cultivation base of Coptis chinensis were increased in the cultivation period. With the increase of fallow age, the contents of total phenolic acid and ferulic acid in the soil of cultivation base ofCoptis chinensis showed decrease tendency in the fallow period of Coptis chinensis. The variation tendency of phenolic acids contents in the soil of cultivation base ofCoptis chinensis can be referred to in the study of the continuous cropping obstacle of Coptis chinensis.

Study on Dynamic State of Phenolic Acids Contents in Different Parts and Growth Years ofCoptis Chinensis / 世界科学技术-中医药现代化

This study was aimed to establish a method to determine the content of phenolic acids in different parts ofCoptis chinensis, in order to discuss the dynamic change of phenolic acids contents in different parts and growth years ofCoptis chinensis. Contents of total phenolic acid, chlorogenic acid and ferulic acid were determined by ferric chloride-ferricyanatum calcium colorimetric method and HPLC, respectively. The results showed that the content of total phenolic acid inCoptis chinensis was in the range from 98.435 mg·g-1 to 184.456 mg·g-1. The content of chlorogenic acid and ferulic acid was in the range from 0.176 mg·g-1 to 2.227 mg·g-1, and 0.039 mg·g-1 to 0.512 mg·g-1, respectively. It was concluded that the content of phenolic acids in different parts ofCoptis chinensis were significantly different. The phenolic acids contents in different parts of Coptis chinensis reached the highest two years after transplantation, and then it expressed downswing with the increasing of growth period.

Establishment of seedling classification criteria of Coptis chinensis by dynamic clustering method / 中国中药杂志

<p><b>OBJECTIVE</b>To establish seedling classification criteria of Coptis chinensis.</p><p><b>METHOD</b>The height of plant, leaf number, leaf length, leaf wide, weight of leaf, weight of root were measured, the main measurement indexes of seedlings of C. chinensis were chosen through correlation and regression analysis. The seedling classification criteria were formulated by dynamic clustering analysis.</p><p><b>RESULT</b>The criteria of the 1st-grade seedlings were as follows: leaf number above 8 leaves, height of plant between 12 and 14 cm. The criteria of the 2nd-grade seedlings were as follows: leaf number between 6 and 8 cm, height of plant between 9 and 12 cm. The criteria of the 3rd-grade seedlings were as follows: leaf number between 4 and 6 cm, height of plant above 9 cm.</p><p><b>CONCLUSION</b>The seedling classification criteria of C. chinensis was scientific and feasible, and can be used for the quality control standard of C. chinensis.</p>

Dynamic accumulation of effective components and biomass of Coptis chinensis in Hongya county / 中国中药杂志

<p><b>OBJECTIVE</b>To study the dynamic accumulation of the effective components and biomass of Coptis chinensis, so to provide the experimental date of optimal harvest time for C. chinensis in Hongya county.</p><p><b>METHOD</b>The samples of three to five years were gathered from the same field and time. The biomass was analyzed by weighed. The jatrorrhizine, columbamine, epiberberine, coptisine, palmatine and berberine in C. chinensis were analyzed by HPLC.</p><p><b>RESULT</b>With the increasing of years of growth, the rootstalk biomass of C. chinensis was increasing continuously. The biomass growth of four-year-old C. chinensis was the fastest in the year. From September to October was the fastest season of the growth of rootstalk. The dynamic accumulation in rootstalk C. chinensis had regularity in the certain extend. The contents of six alkaloids and all alkaloids in 4-year-old C. chinensis were more than that in 3-years-old and 5-year-old. The contents of six alkaloids were mostly highest in August. From July to December, there is no significant difference in the contents of columbamine, epiberberine, coptisine, palmatine, berberine and all alkaloids in 4-years-old C. chinensis.</p><p><b>CONCLUSION</b>According to the biomass and the accumulation pattern of the effective components in the C. chinensis, the optimal harvest time is from September to October of 4-year-old C. chinensis.</p>

Determination of 2,3,5,4'-tetrahydroxystilbene-2-O-beta-D-glucopyranoside and anthraquinon simultaneously in Polygonum multiflori of different growing stage and gathering periods by HPLC / 中国中药杂志

<p><b>OBJECTIVE</b>A HPLC method was established for the determination of 2, 3, 5, 4'-tetrahydroxystilbene-2-O-beta-D-glucopyranoside and anthraquinon simultaneously in Polygonum multiflori. The contents variation from different growing stages in P. multiflori were observed.</p><p><b>METHOD</b>The HPLC method was used to measure the contents of 2, 3, 5, 4'-tetrahydroxystilbene-2-O-beta-D-glucopyranoside and anthraquinon simultaneously in 14 years old P. multiflori which were harvested in July to December. Chromatographic conditions: The chromatography column was C18 with a mobile phase composed of methanol-0.1% water phosphoric acid. The detection wavelength was 320 nm and 254 nm respectively, and the flow rate was 1.0 mL x min(-1).</p><p><b>RESULT</b>In a certain range, 2, 3, 5, 4'-tetrahydroxystilbene-2-O-beta-D-glucopyranoside, emodin and physcion showed good linearity, precision, reproducibility, stability and average recovery.</p><p><b>CONCLUSION</b>The developed method is sensitive, accurate. The contents of 2, 3, 5, 4'-tetrahydroxystilbene-2-O-beta-D-glucopyranoside and anthraquinon in P. multiflorum rapidly accumulated in one to two years, and in three year that was the highest. The samples collected in November accumulate much higher amounts of 2, 3, 5, 4'-tetrahydroxystilbene-2-O-beta-D-glucopyranoside and anthraquinon than those which were collected in other months.</p>

Simultaneous determination of six alkaloids in Coptis chinensis of different regions by RP-HPLC / 中国中药杂志

A reversed-phase HPLC method for simultaneous determination of gatrorrhizine, columbamine, epiberberine, coptisine, palmatine and berberine in Coptis chinensis was developed. Analysis was carried out on an Xtimate C18 column (4.6 mm x 250 mm, 5 microm) eluted with acetonitrile-30 mmol x L(-1) ammonium bicarbonate solution (including 0.7% ammonia and 0.1% triethylamine) by gradient elution. The detective wavelength was 270 nm, the column temperature was 30 degrees C, and the flow rate was 1.0 mL x min(-1). By the above method, the linear ranges of gatrorrhizine, columbamine, epiberberine, coptisine, palmatine and berberine were 0.85-16.96 (r = 0.9997), 1.25-24.96 (r = 0.999 5), 2.05-40.96 (r = 0.999 9), 3.65-72.96 (r = 0.999 9), 2.88-57.60 (r = 0. 999 8),13.25-264.96 mg x L(-1) (r = 0.999 6), respectively. The average recoveries (n = 6) of the six alkaloids were 101.6% (RSD 1.3%),102.5% (RSD 1.5%), 100.8% (RSD 1.9%),102. 6% (RSD 1.2%), 97.80% (RSD 1.3%), 99.01% (RSD 1.5%), respectively. The determined results demonstrate that there is a significant difference in the contents of six alkaloids and total alkaloids among the tested samples. The method is accurate, reliable and repeatable for simultaneous determination of gatrorrhizine, columbamine, epiberberine, coptisine, palmatine and berberine in C. chinensis.

Genetic relationship among populations of cultivated Coptis chinensis revealed by SRAP / 中草药

Objective To reveal the genetic relationship among populations of cultivated Coptis chinensis.Methods Twenty four populations of cultivated C.chinensis from different habitats were employed to be analyzed by the approach of sequence-related amplified polymorphism(SRAP).Systematic relationship was constructed based on the UPGMA method by Treeconw software.Results A total of 276 bands were scored,among which 120 were polymorphic bands.The average percentage of polymorphic bands was 43.48%,indicating that the materials in the test have low genetic diversity.Genetic similarity coefficients were changed from 0.877 0 to 0.951 9.By cluster analysis,the geographical distribution was not very obvious,but it was also showed some of the cultivated C.chinensis from the same region were in the same group.Conclusion Different germplasms diversity of cultivated C.chinensis population is lower and genetic background is more single.