This study used a different Xianfeng grass drying temperature (40,60,80 and 100 ℃) treatment, and then to 50 percent ethanol as solvent extraction return to heat, drying temperature of antioxidant activity of the affected grass and maple Xianfeng - To «the same solvent (n-hexane, methylene chloride, methanol - water and methanol - chloroform) were Progressive» Xianfeng heat back to grass »extraction, of« with the solvent extraction of the antioxidant activity. Antioxidant content of tests including the composition of polyphenols and flavonoids, compounds content analysis, including the antioxidant activity test can remove DPPH radical », chelated iron ion capacity, the relative reduction», removing superoxide Yam »son can», Inhibit micro-fat »oxidation and removal of ABTS-» son, and BHA, EDTA, α-tocopherol and the gallic acid oxidation resistance compared.
The results showed that in different temperatures and the Department of Xianfeng stem from the leaf samples, and 50 percent ethanol as a hot back extraction, extracts from the extraction rate, higher than the leaf stem, in the pilot 40 ℃ drying The leaves of the best performance, its total flavonoids and polyphenol content of 10.89 mg / g and 63.96 mg / g, in the removal of DPPH radical experiment, the IC50 was 0.03 ± 0.00 mg / g, in sequestration Asia Iron capacity test, the IC50 was 0.08 ± 0.01 mg / g, in the relative reduction in the ability test, k value of 1.13 ± 0.01 mL / mg, in the removal of superoxide ability test, the clearance rate was 60.70 percent, in suppressing Micro-fat »oxidation test, its inhibition rate of 70.99 percent, in the removal of ABTS-«-pilot,
2008-05-14 23:11:06 補充：
the IC50 was 0.03 ± 0.01 mg / g. In addition, in a different solvent extraction Xianfeng grass and then Liquidambar formosana, extracts of the total polyphenol content methanol - fragments of water extract of the highest content,
2008-05-14 23:11:18 補充：
respectively 63.60 and 49.41 mg / g, flavonoid content of methanol -- Chloroform fragment extract the highest content, respectively 49.91 and 26.81 mg / g, in the antioxidant activity of test,
2008-05-14 23:11:47 補充：
methanol - water extract of a fragment of the best performance in the removal of DPPH radical experiment, their respective IC50 To 0.03 ± 0.00 mg / g and 0.06 ± 0.00 mg / g, ferrous ions in the sequestration ability test,
2008-05-14 23:12:00 補充：
their IC50 were 0.06 ± 0.01 mg / g and 0.23 ± 0.00 mg / g, in the relative reduction in the ability test, k values were 0.88 ± 0.05 and 0.40 ± 0.01 mL / mg, in the removal of superoxide ability test,
2008-05-14 23:12:11 補充：
their clearance rates were 64.14 and 72.58 percent, in inhibiting micro-fat »oxidation test, the inhibition rates were 57.75 percent and 69.67 percent, the clearance ABTS-«-pilot, the IC50 were 0.05 ± 0.01 and 0.02 ± 0.00 mg / g.
2008-05-14 23:12:24 補充：
Study results showed that Xianfeng grass with Liquidambar extract all of anti-oxidation, on the 40 ℃ Xianfeng grass drying handled through the leaf extract of the performance of the highest activity,
2008-05-14 23:12:35 補充：
while different solvent extraction methanol - water Fragment extracts shown by the highest activity, and has a high content of the total polyphenol content, which showed that the total antioxidant activity and polyphenol content of inter-linked with.
2008-05-14 23:12:46 補充：
The results will help understand the Liquidambar Xianfeng grass with anti-oxidation and select the appropriate method of processing.