【抗氧化酶(antioxidant enzyme)】Catalase過氧化氫酶 (觸酶) 檢測貨號KTB1040
抗氧化酶(antioxidant enzyme)-Catalase過氧化氫酶/觸酶檢測
過氧化氫酶/觸酶(Catalase , CAT)是幾乎在所有活生物體中常見的抗氧化酶(antioxidant enzyme)。它的主要功能是催化過氧化氫(hydrogen peroxide)分解為水(water)和氧氣(oxygen),並去除體內的過氧化氫(hydrogen peroxide),從而防止細胞被過氧化氫中毒。過氧化氫酶/觸酶(Catalase , CAT)幾乎存在於所有有氧呼吸生物體中,可保護細胞免受過氧化氫的毒性作用。促進細胞生長,包括 T 細胞、B 細胞、骨髓性白血病細胞、黑色素瘤細胞、肥大細胞瘤細胞、正常和轉化的纖維母細胞。過氧化氫酶/觸酶(Catalase , CAT)是生物防禦系統(biological defense system)中的關鍵酶之一,為人體提供了抗氧化防禦機制(antioxidant defense mechanism)。參與疾病: CAT 缺陷是導致 acatalasia 的原因 (ACATLAS) [MIM:115500];也稱為無過氧化酶血症。這種疾病的特徵是紅血球中缺乏過氧化氫酶活性,並且通常與口腔潰瘍有關。
Catalase過氧化氫酶 (觸酶) 活性檢測試劑盒 | CheKine™ Catalase Activity Assay Kit貨號KTB1040
偵測範圍2-75 µM (最低靈敏度2 U/ml)
CheKine™過氧化氫酶/觸酶活性檢測試劑盒(CheKine™ Catalase Activity Assay Kit, KTB1040) 可應用於各種生物樣品(例如Tissue Homogenate, Cell Lysate, serum, plasma, erythrocyte lysate)中的過氧化氫酶活性(catalase activity)檢測, 提供了一種簡便的比色測定方法。 該檢測試劑盒基於過氧化氫酶(catalase)與甲醇(methanol)的反應,在最佳濃度的H2O2存在下,利用過氧化氫酶(catalase)的過氧化功能來測量過氧化氫酶活性。 產生的甲醛(formaldehyde)可以在OD 540 nm處進行比色測定。 因此,樣品中存在的過氧化氫酶活性(catalase activity)與獲得的信號成正比。測量線性範圍為 2-75 µM, 最低測量活性為2 U/ml。Abbkine對於CAT活性測定試劑盒(CAT Activity Assay Kit),選擇了不同的品牌(Cayman Chemical,Abcam,Biovision),與Abbkine CheKine™過氧化氫酶(CAT)活性測定試劑盒(Cat#:KTB1040)進行了比較。CAT活性測定試劑盒,Abbkine和Cayman Chemical品牌的測定原理相似。甲醇(Methanol)被用作反應底物。而Abcam和Biovision將H2O2作為反應底物。H2O2不僅是過氧化氫酶(catalase , CAT)的單一底物,樣品中的其他過氧化物酶可能會干擾實驗結果,並且標準曲線誤差可能是由過氧化氫的不穩定性引起的。儘管甲醇(Methanol)是過氧化氫酶的獨特底物,但其他過氧化物酶不能使用甲醇(Methanol)作為底物,因此可以避免訊號干擾。

(文獻引用來自) The levels of catalase, glutathione peroxidase and superoxide dismutase in control and test rats are illustrated in Figure 3a–d. When compared to Group 1, the levels of the enzymes GPx, CAT, GSH and SOD were all markedly lower in the adipose tissue of the diabetic group. The values of antioxidant enzymes in the adipose tissue of C. papaya medicament group were proficiently augmented compared to Group 2. Metformin medicament also showed a substantial improvement in these levels. These enzymatic antioxidant levels exhibited no changes in Group 5 rats.
Fig. Formaldehyde standard curve. The y-axis is absorbance of standards and the x-axis is final formaldehyde concentration (uM).
| Brand | Assay Principle | Sample type |
| Abbkine | 過氧化氫酶活性(catalase activity)檢測, 提供了一種簡便的比色測定方法。 該檢測試劑盒基於過氧化氫酶(catalase)與甲醇(methanol)的反應,在最佳濃度的H2O2存在下,利用過氧化氫酶(catalase)的過氧化功能來測量過氧化氫酶活性。 產生的甲醛(formaldehyde)可以在OD 540 nm處進行比色測定。 因此,樣品中存在的過氧化氫酶活性(catalase activity)與獲得的信號成正比。測量線性範圍為 2-75 µM, 最低測量活性為2 U/ml。 | Tissue Homogenate, Cell Lysate, serum, plasma, erythrocyte lysate |
| Cayman Chemical | 該檢測試劑盒基於過氧化氫酶與甲醇的反應,在最佳濃度的H2O2存在下,利用過氧化氫酶的過氧化功能來測量過氧化氫酶活性。 產生的甲醛可以在OD 540 nm處進行比色測定。 因此,樣品中存在的過氧化氫酶活性與獲得的信號成正比。 | Tissue Homogenate, Cell Lysate, serum, plasma, erythrocyte lysate |
| Abcam | 樣品中存在的過氧化氫酶與過氧化氫(H2O2)反應生成水和氧氣。 未轉化的H2O2與探針反應生成可以在OD 570 nm處進行比色法測量的產物。 | Serum, Plasma, Cell Lysate, Tissue Lysate, Urine |
| Biovision | 樣品中存在的過氧化氫酶與過氧化氫(H2O2)反應生成水和氧氣。 未轉化的H2O2與探針反應生成可以在OD 570 nm處進行比色法測量的產物。 | Tissue Homogenate, Cell Lysate, erythrocyte lysate |

(文獻引用出自) Figure 7. (a–c) Enzymatic antioxidant levels in the ethanolic extract of C. papaya in the control and diabetic rats. Each bar indicates the mean ± SEM of eight rats, with p < 0.05 indicating significant differences between the groups as: a—control; b—diabetes; c—diabetic rats treated with ethanolic extract of C. papaya; and d—diabetic rats treated with metformin.

(文獻出自) To assess the effect of Cd exposure on the oxidative state, the activity of catalase (CAT), malondialdehyde (MDA), and total antioxidant capacity (TAC) in MC3T3-E1 cells was detected using the commercial kit (Abbkine, China).
| Product name | CheKine™ Micro Catalase (CAT) Activity Assay Kit |
| Applications notes | CheKine™ Micro Catalase Activity Assay Kit provides a simple and easy colorimetric assay for the study of catalase activity in a variety of biological samples such as cell and tissue lysates or biological fluids. This assay kit utilizes the peroxidatic function of catalase for measuring catalase activity, based on the reaction of catalase with methanol, with the presence of an optimal concentration of H2O2. The formaldehyde produced can be measured colorimetrically at OD 540 nm. Therefore, the catalase activity present in the sample is proportional to the signal obtained. |
| Kit components | • Assay Buffer • Sample Diluent • Formaldehyde standard (4.25 M) • Catalase (control) • Potassium Hydroxide • Hydrogen Peroxide • Chromogen • Potassium Periodate |
| Features & Benefits | • Determination of catalase activity in serum, plasma, tissue/cell lysates and other biological fluids. • Determining catalase activity directly by utilizing the peroxidatic function of catalase, which can not be interfered by other peroxidases. • A broad range linearity: 2-75 µM. • Measure catalase activity down to 2 U/ml |
| Usage notes | • If not assayed immediately, samples can be stored at -80°C. • Overheating can inactivate catalse. The enzyme should be kept cold during sample preparation and assaying. • In general, catalase is very unstable at high dilution. It is recommned to store samples concentrated and assay within 30 minutes afrer dilution. |
| Storage instructions | Storage at -20°C and Keep from light immediately upon receipt. Kit has a storage time of 6 months from receipt. Refer to list of materials supplied for storage conditions of individual components. |
| Shipping | Gel pack with blue ice. |
| Background | Catalase (EC 1.11.1.6), is a common antioxidant enzyme that catalyzes the decomposition of hydrogen peroxide (H2O2) to water and oxygen, ubiquitously present in aerobic cells containing a cytochrome system. Hydrogen peroxide is highly deleterious to the cell and its accumulation will cause oxidation of cellular targets such as DNA, proteins, and lipids, thus leading to mutagenesis and cell death. Removal of the hydrogen peroxide (H2O2) from cells by using catalase provides protection against oxidative damage to the cell. The role of catalase in oxidative stress related diseases has been widely studied. Catalase also demonstrates peroxidatic activity, in which low molecular weight alcohols can serve as electron donors. Aliphatic alcohols are specific substrates for catalase, however, other enzymes with peroxidatic activity do not utilize these substrates. |
商品需用儀器測量 酵素免疫分析儀請按此 (標配405、450、492、630 nm, 可擴增至7個濾片)
常見抗氧化活性的評估方法
Abbkine所有生化試劑盒都可用分光光度計檢測的,需確認一個先決條件:具備與分光光度計匹配的微量比色皿。
| 分類 | 貨號 | 品項 | 內容 | 更多資料 |
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常見抗氧化活性的評估方法 <抗氧化維生素系統&小分子> |
貨號KTB1070 | CheKine™黃嘌呤氧化酶檢測 |
CheKine™ Xanthine Oxidase Assay Kit 線性範圍15.6 -500 mU/mL |
操作手冊 |
| 貨號KTB1910 | CheKine™活性氧(ROS)檢測分析試劑盒 <螢光檢測> |
活性氧ROS檢測 DCFH-DA (10 mM) |
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| 貨號KTB1400 | 一氧化氮(NO)檢測 | 一氧化氮(NO)檢測範圍:1-100 µM | 操作手冊 | |
| 貨號KTB1040 | Catalase過氧化氫酶/觸酶活性檢測 | 測量線性範圍為 2-75 µM, 最低測量活性為2 U/ml。 | 操作手冊 | |
| 貨號KTB1500 | 總抗氧化劑能力分析 | 偵測範圍: 0.15-3 mM | 操作手冊 | |
| 貨號KTB1530 |
<植物> |
偵測範圍:0.156-10 mg/g | 操作手冊 | |
| 貨號KTB1050 | CheKine™脂質過氧化檢測試劑盒 | MDA與硫代巴比妥酸(thiobarbituric acid ,TBA)反應生成MDA-TBA加合物在OD 532 nm處進行比色定量。1-100 µM/L | 操作手冊 | |
| 貨號KTB1091 | 羥基自由基清除能力比色測定試劑盒 | Hydroxyl Free Radical Scavenging Capacity Colorimetric Assay Kit | 操作手冊 | |
| 貨號KTB1210 | 超氧陰離子比色測定試劑盒 | Superoxide Anion Colorimetric Assay Kit | 操作手冊 | |
| 貨號KTB1020 |
<組織/細胞> |
NAD是一種酶共體(enzymatic cofactor),涉及許多氧化還原反應(redox reactions) | 操作手冊 | |
| 貨號KTB1041 | CheKine™ 過氧化氫 (H2O2) 檢測試劑盒 | 過氧化氫 (Hydrogen Peroxide , H2O2) 是一種活性氧(reactive oxygen)代謝副產物 | 操作手冊 | |
| 貨號KTB1080 | 超氧陰離子清除測定試劑盒| | O2-與四唑鎓鹽WST-8染料反應形成水溶性的有色formazan產物 | 操作手冊 | |
|
常見抗氧化活性的評估方法 <抗氧化酵素系統> |
貨號KTB1610 |
英文名稱: CheKine™ Glutathione Oxidized (GSSG) Colorimetric Assay Kit |
穀胱甘肽氧化(GSSG)比色分析試劑盒:還原型穀胱甘肽可與DTNB反應並生成2-硝基-5-巰基苯甲酸,在412nm波長處具有最大的光吸收率。 | 操作手冊 |
| 貨號KTB1600 | 英文名稱: CheKine™ Reduced Glutathione (GSH) Colorimetric Assay Kit 還原型穀胱甘肽(GSH)檢測 |
利用DTNB與還原型穀胱甘肽反應形成黃色產物。在412 nm處測得的光密度可以直接反映樣品中的穀胱甘肽濃度。 | 操作手冊 | |
| 貨號 KTB1620 | 英文名稱: CheKine™ Glutathione Oxidized (GSSG) Colorimetric Assay Kit 氧化型穀胱甘肽(GSSG)檢測 |
還原型穀胱甘肽可與DTNB反應並生成2-硝基-5-巰基苯甲酸,在412nm波長處具有最大的光吸收率。10-20uM | 操作手冊 | |
| 貨號KTB1640 |
英文名稱: CheKine™ Glutathione Peroxidase (GSH-Px) Colorimetric Assay Kit
|
GSH-Px催化H2O2氧化GSH生成GSSG;穀胱甘肽還原酶(GR)催化NADPH還原GSSG從而再生GSH,而NADPH氧化產生NADP +。 NADPH在340 nm處有一個特徵吸收峰,而NADP +沒有。通過測量340 nm處吸光度的降低速率來確定NADPH脫氫速率,以計算GSH-Px活性。 | 操作手冊 | |
| 貨號KTB1630 |
英文名稱: CheKine™ Glutathione S-Transferase (GST) Colorimetric Assay Kit |
FGST催化GSH與CDNB的結合。共軛伴隨著在340nm處吸光度的增加。增加速率與樣品中的GST活性成正比。 | 操作手冊 | |
| 貨號KTB1650 |
英文名稱: CheKine™ Thioredoxin Reductase (TrxR) Colorimetric Assay Kit |
TrxR可以催化NADPH還原DTNB從而生成TNB和NADP +。 TNB在412nm處具有特徵吸收峰。 TrxR活性可以通過測量412 nm處TNB的增加速率來計算。 | 操作手冊 | |
| 貨號KTB1660 |
英文名稱: CheKine™ Thioredoxin Peroxidase (TPX) Colorimetric Assay Kit |
TPX催化H2O2氧化二硫蘇糖醇(DTT)。 H2O2的吸收波長為240nm。 TPX活性可以通過測量240nm處吸光度的降低速率並減去過氧化氫酶(CAT)催化的H2O2來計算。因此,該試劑盒可以同時測量樣品的TPX和CAT活性。 | 操作手冊 | |
| 貨號KTB1030 | WST-8法測定SOD活性,最大抑制率可接近100%,不受一些常見干擾因素的干擾。廣泛的線性範圍:3.13-200U/mL。 | 操作手冊 | ||
| 貨號CEA660Ge | 8-羥基去氧鳥苷(8-OHdG)檢測試劑盒(酵素免疫分析法 | 偵測的靈敏度74.07-6000pg/mL、最低靈敏度27.53pg/mL | 操作手冊 | |
| 貨號KTB1011 | CheKine™ 葡萄糖-6-磷酸脫氫酶 (G6PDH) 活性比色測定試劑盒 | 貨號KTB1011 | 樣品中存在的 G6PDH 將 NADP+ 轉化為 NADPH,其在 340 nm 處具有吸光度。 | 操作手冊 | |
| 貨號KTB1140 |
|
Polyphenol Oxidase (PPO) Activity Colorimetric Assay Kit | 操作手冊 | |
| 常見抗氧化活性的評估方法 <蛋白質> |
貨號KTB1200 | CheKine™蛋白羰基比色測定試劑盒 | 貨號KTB1200 | 羰基蛋白(Protein carbonyl)是蛋白質氧化修飾(protein oxidative modification)過程中早期信號,是衡量蛋白質氧化損傷(protein oxidative damage)的主要指標 | 操作手冊 |

