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DPPH清除能力试剂盒(含清除率与Trolox当量结果)

货号:G0128F
规格:48样
价格:410
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  • 产品简介
  • 已发文章
  • 产品问答


一、产品简介:

DPPH(1,1-Diphenyl-2-picrylhydrazyl radical)即1,1-二苯基-2-苦基肼基自由基。广泛用于定量测定生物试样和食品的抗氧化能力。

此法是根据DPPH自由基有单电子,在517nm处有一强吸收,其醇溶液呈紫色的特性。当有自由基清除剂存在时,由于与其单电子配对而使其吸收逐渐消失,呈现的颜色越浅,即A值越低,进而对样本中DPPH清除能力进行定量分析。

二、所需的仪器和用品

可见分光光度计1mL玻璃比色皿(光径1cm)、离心机可调式移液器、研钵、冰甲醇无水乙醇蒸馏水



1. Tuohetisayipu Tuersuntuoheti. 2020. Noodle processing, storage time and cooking affect the antioxidant activities and phenolic compounds content of Qingke barley noodles. International Journal of Food Science and Technology. IF=3.5

 

2. Tuohetisayipu Tuersuntuoheti. 2021.Different preparation methods affect the phenolic profiles and antioxidant properties of Qingke barley foods. Cereal Chemistry. IF=1.98

 

3. Na Zhou. 2022.Preparation, characterization and antioxidant activity of sinapic acid grafted chitosan and its application with casein as a nanoscale delivery system for black rice anthocyanins.International Journal of Biological Macromolecules. IF=6.95


4.Na Zhou.2022.Preparation, characterization and antioxidant activity of sinapic acid grafted chitosan and its application with casein as a nanoscale delivery system for black rice anthocyanins.IF=8.025


5.Hua Yang.2021.Preparation of three-layer flaxseed gum/chitosan/flaxseed gum composite coatings with sustained-release properties and their excellent protective effect on myofibril protein of rainbow trout.IF=6.953


6.Bingsong Ma.2022.Interrelation analysis between phenolic compounds and in vitro antioxidant activities in Pu-erh tea.IF=4.952


7.Yangyang Sun.2022.Phenylpropanoid metabolism in relation to peel browning development of cold-stored ‘Nanguo’ pears.IF=4.729


8.Mingli Liu.2020.High Performance Liquid Chromatography and Metabolomics Analysis of Tannase Metabolism of Gallic Acid and Gallates in Tea Leaves.IF=4.192


9.Ming Zhao.2021.Phytochemical profiles of edible flowers of medicinal plants of Dendrobium officinale and Dendrobium devonianum.IF=2.863


10.Tuohetisayipu Tuersuntuoheti.2020.Noodle processing, storage time and cooking affect the antioxidant activities and phenolic compounds content of Qingke barley noodles.IF=2.773


11.Tuohetisayipu Tuersuntuoheti.2021.Different preparation methods affect the phenolic profiles and antioxidant properties of Qingke barley foods.IF=1.984


12.Xiaojia Su.2022.Medicinal Values and Potential Risks Evaluation of Ginkgo biloba Leaf Extract (GBE) Drinks Made from the Leaves in Autumn as Dietary Supplements.IF=4.927


13.Zhengwei Liang.2022.An instant beverage rich in nutrients and secondary metabolites manufactured from stems and leaves of Panax notoginseng.IF=6.59


14.Leilei  Zang.2022.Electrospun membranes of carboxylated poly(ester urethane)urea/gelatin encapsulating pterostilbene for adaptive and antioxidative purposes.IF=3.682


15.Weibo Dai.2023.Liver Protection of a Low-Polarity Fraction from Ficus pandurata Hance, Prepared by Supercritical CO2 Fluid Extraction, on CCl4-Induced Acute Liver Injury in Mice via Inhibiting Apoptosis and Ferroptosis Mediated by Strengthened Antioxidation.IF=4.927


16.Yijun Liu.2023.Study on the Structure and Bioactivity of Ganoderma lucidum Polysaccharides under Cassava Stalk Stress.IF=5.724


17.Tao Han.2023.Development and Characterization of an Edible Zein/Shellac Composite Film Loaded with Curcumin.IF=5.561


18.Kunyi Liu.2023.Optimization of Main Ingredient Ratio, Metabolomics Analysis, and Antioxidant Activity Analysis of Lycopene-Enriched Compound Fruit Wine.IF=3.7

1、问:官网上试剂盒规格标注的“24样”、“48样”、“96样”是什么意思呢?

     答:“24样”、“48样”、“96样”是试剂盒规格,我们定义了试剂盒可以测多少样,对于试剂盒需要的试剂量都给足的。

          “24样”、“48样”、“96样”规格的试剂盒,可以检测24个样、48个样、96个样;即分别得到24个、48个、96个数据。


2、问:官网上试剂盒检测方法中"可见分光法/紫外分光法"与“微板法”是什么区别?

     答:分光法:指使用紫外可见分光光度计检测,若无紫外可见光分光度计,订购时务必咨询公司技术。公司分光法试剂盒采用的比色皿规格是:光径:1cm,容积:1mL, 狭缝宽3mm;

           微板法:指使用全波段连续酶标仪检测;若无全波段酶标仪,订购指标时务必咨询公司技术, 本公司微板法试剂盒内送96孔普通酶标板,客户无需另外购买耗材。


3、问:分光法试剂盒与微板法试剂盒是否能通用?

     答:公司针对用户实验室具备的实验仪器条件,做了两个体系的试剂盒。两种体系试剂盒检测指标的原理一样,结果可以通用,但是不同体系的试剂盒不可以相互混匀!