The results show that all the extracts of Magnolia Officinal obtained with different extraction solvents have scavenging effects on DPPH radical and ethanol extracts show the highest activity.
结果表明：不同溶剂厚朴提取物对DPPH自由基均有清除作用，其中以乙醇提取物清除能力最强。
Effects of ethanol concentration and reaction time were compared on DPPH free radical scavenging activity of egg white protein hydrolysates in this paper.
对比分析乙醇浓度和反应时间对四种蛋清蛋白酶解物清除DPPH自由基活性的影响情况。
It was found that Fujian Yellow Rice Wine can inhibit the lipoperoxidation and the oxidation of TBA to some extent, which also has a scavenging effect on the DPPH radical.
结果表明：福建黄酒能在一定程度上抑制脂质过氧化反应和亚油酸的氧化，对DPPH自由基有一定的清除作用。
The scavenging capacities of the hydrolysates of WPI catalysted by papain and trypsin on DPPH free radical, superoxide and hydroxyl free radical are stronger than those of the hydrolysates of chymo…
超氧阴离子自由基、羟基自由基的清除能力和还原能力强于胰凝乳蛋白酶酶解物和胃蛋白酶酶解物。
The scavenging capacities on DPPH radical and antioxidative activities to lard oil of the acidolysis products were improved obviously.
酸解产物清除DPPH自由基的能力和对猪油的抗氧化作用均有明显提高。
The free radical scavenging effects of celery extracts were determined by chemiluminescent and DPPH · method.
分别采用化学发光法和DPPH·法测定芹菜提取物清除自由基作用。
Scavenging activity of four natural flavonoids to 2,2-diphenyl-1-picrylhydrzyl free radical(DPPH) was studied by cyclic voltammetry and differential pulse voltammetry.
采用循环伏安法、示差脉冲伏安法对四种天然黄酮类化合物清除二苯代苦味肼自由基（DPPH）的能力进行了探讨。
Hydrolysable tannins and myricetin derivatives possessed potent DPPH free radical scavenging activities, and only myricitrin showed weak tyrosinase- inhibiting activity.
结果显示水解单宁和杨梅素衍生物具有较强的自由基清除活性，杨梅苷显示出微弱的酪氨酸酶抑制活性。
Method: Free radical scavenging was assayed by DPPH method;
方法：DPPH法测定样品对自由基的清除作用；
Glycoprotein on the organic free radical (DPPH) and hydroxyl radical scavenging effect significantly, and with the increase of concentration of PDGP, scavenging ability increased.
玉竹糖蛋白对有机自由基(DPPH)和羟基自由基有明显的清除作用，并且随着PDGP质量浓度的增加，清除能力增强。
The antioxidant activities of each extract from two Juncaceae plants were determined by using DPPH free radical scavenging method.
采用DPPH法对两种灯心草属植物不同溶剂提取物进行抗氧化活性研究。
The antioxidant activities of four compounds isolated from this plant were tested. The results showed that the compound 3 displayed modrate scavenging DPPH free radical activities compared with BHT.
评价了从该活性部位分离出的四个化合物清除DPPH自由基的活性，化合物3显示了一定的清除DPPH自由基的活性。
The antioxidant activities of compounds were evaluated by DPPH free radical scavenging assay.
进一步采用清除DPPH自由基能力的方法测定红花提取物的抗氧化能力。
The results show that the total flavonoids in lotus leaves have strong capacity for scavenging DPPH free radical, and car effectively inhibit linoleic oxidation.
实验结果表明：荷叶黄酮具有良好的清除DPPH自由基的能力，能有效抑制亚油酸的氧化。
The antioxidation experiment results showed that the scavenging effects of the acetone extracts of grape seed on superoxide radical(O - · 2) and 1,1 Dipheny1 2 picry1 hydrazy1(DPPH·)are strong.
抗氧化实验表明，葡萄籽丙酮浸提液对超氧阴离子自由基（O- ·2）和1，1-二苯基-2-苦肼基自由基（DPPH·）均有较强的清除作用。
The antioxidation experiment results showed that the scavenging effects of the acetone extracts of grape seed on superoxide radical(O - · 2) and 1,1 Dipheny1 2 picry1 hydrazy1(DPPH·)are strong.
抗氧化实验表明，葡萄籽丙酮浸提液对超氧阴离子自由基（O- ·2）和1，1-二苯基-2-苦肼基自由基（DPPH·）均有较强的清除作用。
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