ABSTRACT
This paper described a method for detemination of vitamin E and carotene by means of an improved method. The extract of the sample was made without passing N2, sheltering from light, and saponification. Therecovery rates of vitamin E and carotene are 97.2% and 97.6% respectively. The standard deviation is within 0.044 and 0.026.
ABSTRACT
Results obtained from current studies showed that the vitamin C (VC) content in Rose roxburghii Tratt was higher, about 1664-2601 mg/100g fresh sample, than all the fruits and vagetables. Vitamin E(VE) ranged from 2.4 to 3.6mg/100g sample was also higher than any other fruits and vegetables.After the wild plants were domestricated for 2 years, its VC content increased about 26%, Sugar increased 50%, tannin, however, decreased approximately 50%.
ABSTRACT
Objective:To study the protective effect of polysaccharide from Rose roxburghii Tratt (RRTP-1) on neural stem cells damaged by glutamic acid (Glu). Method: RRTP-1 was obtained by ion exchange column chromatography and gel chromatography. The neural stem cells were cultured from the striata of fetal mice and damaged by glutamic acid to simulate hypoxic-ischemic brain injury. The cultures were divided into control group, glutamic acid group and test groups in which different doses of RRTP-1 were added with glutamic acid. The death rate of neural stem cells damaged by Glu and LDH leakage were observed. Results:The neural stem cells damage of test groups were alleviated,and the death rate of neural stem cells and LDH leakage of high dose test group were significantly lower than glutamic acid group. Conclusion:RRTP-1 has remarkable protective effect on neural stem cells damage.