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在色谱分析、有机合成和交叉偶联反应领域已被 0 篇同行评审文献引用。
背景介绍:
植物酚类物质具有清除自由基,抗氧化,抗衰老的作用,具有较高的营养价值和医疗保健作用而广泛应用于化妆品、食品、医药等领域。本试剂盒检测原理是在碱性条件下,酚类物质将钨钼酸还原,产生蓝色化合物,在760 nm处有特征吸收峰,测 760 nm 处的吸光值,即可得样品总酚含量。可以检测植物组织、果汁和蜂蜜等液体样本。
组份表:
| P1524795 | 组件 | 物理外观 | 48T | 96T | 储存 | 单次测试使用量 |
| P1524795A | 试剂一 | 黄色液体 | 2.5 mL | 5 mL | 2-8℃. 避光 | 每次反应需使用50 uL |
| P1524795B | 试剂二 | 无色透明液体 | 2.5 mL | 5 mL | 2-8℃ | 每次反应需使用50 uL |
| P1524795C | 标准品 | 白色粉末 | 10 mg | 20 mg | 2-8℃ | 按照需求使用 |
| 试剂组分(µL) | 测定管 | 空白管(仅做一次) |
| 样本 | 10 | |
| 试剂一 | 50 | 50 |
| 混匀,25℃室温件下,暗处静置3min | ||
| 试剂二 | 50 | 50 |
| 蒸馏水 | 90 | 100 |
| 混匀,25℃室温静置30min,全部液体转移至96孔板中, 测定760nm吸光值A,ΔA=A测定管-A空白管。 |
【注】:1.吸光值大于1,样品适当稀释再测定,计算公式里乘以稀释倍数D。 2.若ΔA在零附近,可增加样本取样质量W,或加大样本上样量V1(如增至30µL,则蒸馏水相应减少, 保持总体积不变),则改变后W和V1需代入计算公式重新计算。 3.若待检测样本有强背景色(如蓝色),需做一个样本自身对照:即试剂一用50μL蒸馏 水替换,其他步骤同测定管,△A=A测定-A对照。
结果计算:
标准曲线:y=3.1975x+0.0451,x是标准品质量(µg),y是ΔA。

总酚(TP)含量(mg/mgprot)= (ΔA - 0.0451) ÷ 3.1975 × 10⁻³ ÷ (V1 ÷ V × Cpr) × D
总酚(TP)含量(µg/mL)=(ΔA-0.0451)÷3.1975÷V1×D
总酚(TP)含量(mg/104cell)= (ΔA - 0.0451) ÷ 3.1975 × 10⁻³ ÷ (V1 ÷ V × 500) × D
V---加入提取液体积;
V1---反应中样品体积,0.01mL;
D---稀释倍数,未稀释即为1;
W---样品质量,g。
500---细菌或细胞总数,万;
Cpr---上清液蛋白浓度,mg/mL,建议使用本公司的BCA蛋白含量检测试剂盒。
附:标准曲线制作过程:
1.标曲为非必做实验,用户可根据实验需求制作标曲,亦可直接采用说明书计算公式进行结果计算。
2.制备标准品母液(10mg/mL):向标准品EP管里面加入1mL提取液(60%乙醇),超声完全溶解;
3.将母液用60%乙醇稀释成六个浓度梯度的标准品,例如:0,0.02,0.04,0.06,0.08,0.1mg/mL。也可根据实际样本调整标准品浓度。
4.标准品稀释参照表如下:
| 吸取标准品母液50uL,加入4.95mL60%乙醇,混匀得到0.1mg/mL的标准品稀释液待用 | ||||||
| 标准品浓度(mg/mL) | 0 | 0.02 | 0.04 | 0.06 | 0.08 | 0.1 |
| 标准品稀释液(uL) | 0 | 80 | 160 | 240 | 320 | 400 |
| 60%乙醇(uL) | 400 | 320 | 240 | 160 | 80 | 0 |
| 各标准管混匀待用 |
5.依据测定管的加样表操作,根据结果,以各浓度吸光值减去0浓度吸光值,过0点制作标准曲线。
| 试剂组分(µL) | 标准管 | 0浓度管(仅做一次) |
| 标品 | 10 | |
| 试剂一 | 50 | 50 |
| 混匀,25℃室温件下,暗处静置3min | ||
| 试剂二 | 50 | 50 |
| 蒸馏水 | 90 | 100 |
| 混匀,25℃室温静置30min,全部液体转移至96孔板中, 测定760nm吸光值A,ΔA=A测定管-A空白管。 |
注意事项:
1、本产品仅作科研用途。
2、为了您的安全和健康,请穿实验服并佩戴一次性手套操作。
Background Introduction:
Plant phenolic substances have the functions of eliminating free radicals, antioxidation and anti-aging. They have high nutritional value and medical health benefits and are widely used in cosmetics, food, medicine and other fields. The detection principle of this kit is that in an alkaline condition, phenolic substances will reduce tungsten molybdate, generating a blue compound. There is a characteristic absorption peak at 760 nm. Measuring the absorbance value at 760 nm can obtain the total phenolic content of the sample. It can detect liquid samples such as plant tissues, fruit juices and honey.
Components:
| P1524795 | Components | Appearance | 48T | 96T | Storage | Quantity Per Test |
| P1524795A | Reagent 1 | Yellow liquid | 2.5 mL | 5 mL | 2-8℃. Store in the dark | 50 uL for 1 reaction |
| P1524795B | Reagent 2 | Colorless clear liquid | 2.5 mL | 5 mL | 2-8℃ | 50 uL for 1 reaction |
| P1524795C | Standard Sample | White powder | 10 mg | 20 mg | RT | Use as per requirements |
Experimental equipment:
Beaker (homogenizer), ice box (ice maker), benchtop centrifuge, adjustable pipette, water bath (oven, incubator, metal bath), 96-well plate, centrifuge tube, microplate reader, 60% ethanol, distilled water (deionized water, ultrapure water are both acceptable).
Index Determination:
It is recommended to select 1-3 samples with significant differences (such as different types or groups) for a preliminary experiment first. This will help you get familiar with the operation process. Based on the results of the preliminary experiment, determine or adjust the sample concentration to prevent unnecessary waste of samples or reagents!
Sample extraction:
Detection steps:
| Reagent components(µL) | Measurement tube | Blank tube (used only once) |
| Sample | 10 | |
| Reagent 1 | 50 | 50 |
| Mix well. At 25℃ room temperature, let it stand in the dark for 3 minutes. | ||
| Reagent 2 | 50 | 50 |
| Distilled water | 90 | 100 |
| Mix well, let it stand at room temperature (25℃) for 30 minutes. Transfer all the liquid to a 96-well plate. Measure the absorbance at 760nm (A), and calculate ΔA as A (test tube) - A (blank tube). |
[Note]: 1. If the absorbance value is greater than 1, dilute the sample appropriately before measurement and multiply the calculation formula by the dilution factor D. 2. If ΔA is near zero, increase the sample sampling mass W or increase the sample loading volume V1 (for example, increase it to 30 µL, then reduce the distilled water accordingly to keep the total volume unchanged). Then, the new W and V1 need to be substituted into the calculation formula for re-calculation. 3. If the sample to be tested has a strong background color (such as blue), a sample self-control should be made: replace the reagent with 50 µL distilled water, and follow the same steps as the test tube, then ΔA = A test - A control.
Result calculation:
Standard curve: y = 3.1975x + 0.0451, where x represents the mass of the standard sample (µg) and y represents ΔA.

Total phenol (TP) content (mg/g dry weight) = (ΔA - 0.0451) ÷ 3.1975 × 10⁻³ ÷ (V1 ÷ V × W) × D
Total phenol (TP) content (mg/mg prot) = (ΔA - 0.0451) ÷ 3.1975 × 10⁻³ ÷ (V1 ÷ V × Cpr) × D
Total phenol (TP) content (µg/mL) = (ΔA - 0.0451) ÷ 3.1975 ÷ V1 × D
Total phenol (TP) content (mg/10^4 cells) = (ΔA - 0.0451) ÷ 3.1975 × 10⁻³ ÷ (V1 ÷ V × 500) × D
V --- Add the volume of the extracting liquid;
V1 --- Volume of sample in the reaction, 0.01 mL;
D --- Dilution factor, 1 for undiluted solution;
W---Sample quality, g;
500---Total number of bacteria or cells, in thousands;
Cpr - Protein concentration in the supernatant, mg/mL. It is recommended to use the BCA protein content detection kit of our company.
Appendix: Procedure for preparing the standard curve:
1.The calibration curve is not a mandatory experiment. Users can create the calibration curve according to their experimental needs, or they can directly use the calculation formulas provided in the manual to calculate the results.
2. Prepare the standard stock solution (10mg/mL): Add 1 mL of the extraction solution (60% ethanol) into the standard EP tube, and ultrasonicate to completely dissolve it;
3. Dilute the mother solution with 60% ethanol to obtain six concentration gradients of standard samples, for example: 0, 0.02, 0.04, 0.06, 0.08, 0.1 mg/mL. The concentration of the standard samples can also be adjusted according to the actual sample.
4. The reference table for standard sample dilution is as follows:
|
5.According to the sample addition table of the measuring tube (as shown below), based on the results, subtract the absorbance value at 0 concentration from the absorbance value at each concentration, and then plot a standard curve through the 0 point.
|
Notes:
1. This product is for research use only.
2. For your safety and health, please wear a lab coat and disposable gloves during operation.
| P1524795 | 组件 | 物理外观 | 48T | 96T | 储存 | 单次测试使用量 |
| P1524795A | 试剂一 | 黄色液体 | 2.5 mL | 5 mL | 2-8℃. 避光 | 每次反应需使用50 uL |
| P1524795B | 试剂二 | 无色透明液体 | 2.5 mL | 5 mL | 2-8℃ | 每次反应需使用50 uL |
| P1524795C | 标准品 | 白色粉末 | 10 mg | 20 mg | 2-8℃ | 按照需求使用 |
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| 批号(Lot Number) | 证书类型 | 货号 |
|---|---|---|
| 分析证书 | P1524795 | |
| 分析证书 | P1524795 |
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