The Comparative Research On The Content Of Procyanidins And Anthocyanin Of Wild Lycium Ruthenicum In Xinjiang Different Regions

? Objective ? Lycium Ruthenicum is a kind of health food which has a high nutritional and economic value.The anthocyanins and proanthocyanidins' level is an important indicator to measure the nutritional value of Lycium Ruthenicum.As a result,studying on the factors which will affect the anthocyanin and procyanidins of Lycium Ruthenicum it can provide a theoretical basis for efficient artificial cultivation of Lycium Ruthenicum.? Method ? In this paper,we use the wild Lycium Ruthenicum and artificial domesticated cultivation of Lycium Ruthenicum as the test material.We would measure the content level of anthocyanin and procyanidins of wild(including cultivated)Lycium Ruthenicum which are in different distribution areas,habitats,accumulated temperature areas and harvesting times.And determin the temperature in harvest areas to explore the correlation between the temperature and the content level of anthocyanin and proanthocyanidins in Lycium Ruthenicum.?Result?The results showed that:(1)The wild(including cultivated)Lycium Ruthenicum's anthocyanin content range is 7.05-38.01 mg / g,and procyanidins content range is 3.17-16.94 mg /g in Xinjiang.The content level of anthocyanins is greater than that of proanthocyanidins.The highest content level of anthocyanin and procyanidins was higher in northern of Xinjiang than that in southern of Xinjiang.While the average content level is closer.(2)The content level of anthocyanin and procyanidins of wild Lycium Ruthenicum in the southern margin of the Altai Mountains in Xinjiang was significantly higher than that in other habitats.The basic order is: the lake> forest> roadside> rock,gobi.(3)If the effective accumulated temperature ?10 ?,it has nothing to do with the content level of anthocyanin in wild(including cultivated)Lycium Ruthenicum in Xinjiang.But the higher the effective accumulated temperature is,the higher the procyanidins content level is.The high effective accumulated temperature is beneficial to the accumulation of procyanidins.In the same accumulated temperature area,the content of anthocyanins and procyanidins of Lycium Ruthenicum cultivated by artficial domesticated are both higher than those of wild Lycium Ruthenicum.Artificial domestication could improve the quality of Lycium Ruthenicum obviously.(4)The wild(including cultivated)Lycium Ruthenicum in Xinjiang possesses the higher level of anthocyanins and procyanidins in the high and low effective accumulated temperature region of September and October and the middle effective accumulated temperature of July and August.Therefore,it is possible to make sure that the best harvest period of the Lycium Ruthenicum is in the late September and early October for the high and the low effective accumulated area,while in mid-August and early September for the middle effective accumulated region.So we can consider to do the harvest in this period.(5)Compared with the average temperature of five days before the havest day,the temperature effect on the content of anthocyanin and procyanidins of havest day is slight;And the effects of high temperature on anthocyanin and procyanidins are not significant;The low temperature and temperature difference are beneficial to increase the content level of anthocyanin and procyanidins in Lycium Ruthenicum.?Conclusions?There were significant differences in the content of anthocyanin and procyanidins in the different distribution areas,habitats and harvesting times of Xinjiang wild Lycium Ruthenicum.High effective accumulated temperature is benefit for the accumulation of procyanidins,but the relationship with anthocyanin content is not obvious.The low temperature and large temperature difference during harvest period are in favor of the increase of anthocyanin and procyanidin.