ZHANG Rui,GU Zhi-rong,GUO Yan,et al.Content Difference of Effective Components of Cynomorii Herba Between Different Producing Areas and Its Response to Environmental Factors[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(07):142-150.
ZHANG Rui,GU Zhi-rong,GUO Yan,et al.Content Difference of Effective Components of Cynomorii Herba Between Different Producing Areas and Its Response to Environmental Factors[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(07):142-150. DOI: 10.13422/j.cnki.syfjx.20220512.
Content Difference of Effective Components of Cynomorii Herba Between Different Producing Areas and Its Response to Environmental Factors
To explore the content difference of gallic acid,protocatechuic acid,catechin,total flavonoids, and total polysaccharides in Cynomorii Herba between different producing areas and the correlation between effective components and environmental factors.
Method
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Ninety-five batches of Cynomorii Herba samples were collected from 12 major producing areas in five provinces (autonomous regions), including Gansu,Inner Mongolia,Xinjiang,Qinghai, and Ningxia,and the geographical-climatic factors such as altitude,longitude and latitude,climate type,annual average frost-free period,annual rainfall,annual sunshine hours,annual average temperature, and annual average evaporation were recorded. The content of gallic acid,protocatechuic acid, and catechin in Cynomorii Herba was determined by high-performance liquid chromatography (HPLC),and the mathematical model of the correlation between the content of chemical components and environmental factors was optimized and established.
Result
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Pearson correlation analysis showed that protocatechuic acid content in Cynomorii Herba increased with the increase in annual average frost-free period and annual average temperature, and catechin content increased with the increase in the annual average frost-free period,annual sunshine hours, and annual average evaporation,while total polysaccharides content decreased with the increase in altitude. Redundancy analysis (RDA) showed that the annual average frost-free period, annual average evaporation,annual sunshine hours, and altitude had great influences on the content of effective components in Cynomorii Herba. Curve fitting showed that the optimal conditions for the growth of Cynomorii Herba were as follows: altitude of 800-2 000 m,annual average frost-free period of 80-110 d, annual rainfall of 110-300 mm,annual sunshine hours of 2 400-3 000 h, annual average temperature of 2.2-8.8 ℃,and annual average evaporation of 1 700-2 500 mm.
Conclusion
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The content of effective components in Cynomorii Herba is diverse in terms of producing areas and shows a clear response rule to environmental factors. The areas suitable for growing and artificial cultivation introduction are those with high altitude,short annual average frost-free period,low annual rainfall,large average evaporation,long sunshine hours, and low annual average temperature.
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