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糖原和淀粉在磷酸解过程中会生成葡萄糖-1-磷酸(1PG/G1P)。本试剂盒提供一种简单,灵敏,快速的测定方法:葡萄糖-1-磷酸(1PG/G1P)在磷酸葡萄糖变位酶和磷酸葡萄糖脱氢酶的相继作用下使 NADP+还原成 NADPH,通过检测 NADPH 在340nm 处的增加量即可计算得出样品中的葡萄糖-1-磷酸(1PG/G1P)含量。
试剂盒组成和配制:
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所需的仪器和用品:
酶标仪、96 孔板、台式离心机、可调式移液器、研钵、冰和蒸馏水。
葡萄糖-1-磷酸(1PG/G1P)含量测定:
1 、样本制备
① 组织样本:
建议称取约 0. 1g 组织,加入 1mL 提取液,进行冰浴匀浆。12000rpm, 4℃离心 10min, 取上清,置冰上待测。
【注】:若增加样本量,可以按照组织质量(g):提取液体积(mL)为 1 :5~ 10 的比例提取。
② 细菌/细胞样本:
先收集细菌或细胞到离心管内,离心后弃上清;取约 500 万细菌或细胞加入 1mL
提取液,超声波破碎细菌或细胞(冰浴,功率 200W ,超声 3s ,间隔 10s ,重复 30 次); 12000rpm 4℃离心 10min ,取上清,置冰上待测。
【注】:若增加样本量,可按照细菌/细胞数量(104):提取液(mL)为 500~ 1000:1 的比例进行提取。
③ 液体样本:直接检测。
2 、上机检测:
① 酶标仪预热 30min 以上,调节波长至 340nm。
② 试剂解冻至室温(25℃);
③ 在 96 孔板中按照下表依次加入试剂:
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【注】1. 若△A 的差值在零附近徘徊,可增加样本量 V1(如增至 50μL ,则试剂三相应减少,保持 总体积不变),或增加样本取样质量 W ,则改变后的 V1 和 W 需代入公式重新计算。
2. 若 A2 值超过 1.2 ,可减少加样量 V1(如减至 10μL ,则试剂三相应增加,保持总体积不变),或对样本用蒸馏水稀释(保持加样体系不变),则改变后的 V1 和 D 需代入公式重新计算。
结果计算:
1 、按样本重量计算:
1PG/G1P 含量(µg/g 鲜重)=[(ΔA÷(ε×d)×V2×106 ×Mr]÷(W×V1÷V)×D=836×ΔA÷W×D
2 、按细胞数量计算:
1PG/G1P 含量(μg/104 cell)=[(ΔA÷(ε×d)×V2×106 ×Mr]÷(500×V1÷V)×D= 1.7×ΔA×D 3 、按照液体体积计算:
1PG/G1P 含量(µg/mL)=[(ΔA÷(ε×d)×V2×106 ×Mr]÷V1=836×ΔA
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Glycogen and starch generate glucose-1-phosphate (1PG/G1P) during the process of phosphohydrolysis. This reagent kit provides a simple, sensitive, and rapid determination method: Glucose-1-phosphate (1PG/G1P) is reduced from NADP+to NADPH by the sequential action of phosphoglucose mutase and phosphoglucose dehydrogenase. The content of glucose-1-phosphate (1PG/G1P) in the sample can be calculated by detecting the increase in NADPH at 340nm.
Composition and preparation of reagent kit:
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Required instruments and supplies:
ELISA reader, 96 well plate, desktop centrifuge, adjustable pipette, mortar, ice and distilled water.
Determination of glucose-1-phosphate (1PG/G1P) content:
1. Sample preparation
① Organizational sample:
Suggest weighing around 0 1g of tissue, add 1mL of extraction solution, and homogenize in an ice bath. Centrifuge at 12000rpm, 4 ℃ for 10 minutes, take the supernatant, and place it on ice for testing.
[Note]: If the sample size is increased, it can be extracted in a ratio of tissue mass (g) to extraction solution volume (mL) of 1:5-10.
② Bacterial/cellular samples:
Collect bacteria or cells into a centrifuge tube first, centrifuge and discard the supernatant; Take about 5 million bacteria or cells and add them to 1mL
Extract solution, sonicate bacteria or cells (ice bath, power 200W, sonication for 3s, interval 10s, repeated 30 times); Centrifuge at 12000rpm at 4 ℃ for 10 minutes, take the supernatant, and place it on ice for testing.
[Note]: If the sample size is increased, extraction can be carried out in a ratio of 500-1000:1 of bacteria/cell quantity (104) to extraction solution (mL).
③ Liquid sample: direct detection.
2. Machine testing:
① Preheat the enzyme-linked immunosorbent assay (ELISA) reader for at least 30 minutes and adjust the wavelength to 340nm.
② Thaw the reagent to room temperature (25 ℃);
③ Add reagents to the 96 well plate in the following order according to the table:
② Thaw the reagent to room temperature (25 ℃);
③ Add reagents to the 96 well plate in the following order according to the table:
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[Note] 1 If the difference in Δ A is hovering around zero, the sample size V1 can be increased (such as increasing to 50 μ L, the three phases of the reagent should be reduced while keeping the total volume unchanged), or the sample sampling mass W can be increased. The changed V1 and W need to be substituted into the formula for recalculation.
If the A2 value exceeds 1.2, the amount of sample added V1 can be reduced (such as to 10 μ L, the three-phase reagent should be increased while keeping the total volume unchanged), or the sample can be diluted with distilled water (keeping the sample addition system unchanged), and the changed V1 and D need to be substituted into the formula for recalculation.
Result calculation:
1. Calculated by sample weight:
1PG/G1P content (µ g/g fresh weight)=[(Δ A ÷ (ε× d) × V2 × 106 × MR] ÷ (W × V1 ÷ V) × D=836 × Δ A ÷ W × D
2. Calculated by the number of cells:
1PG/G1P content (μ g/104 cell)=[(Δ A ÷ (ε× d) × V2 × 106 × MR] ÷ (500 × V1 ÷ V) × D=1.7 × Δ A × D. 3. Calculated by liquid volume:
1PG/G1P content (µ g/mL)=[(Δ A ÷ (ε× d) × V2 × 106 × Mr] ÷ V1=836 × Δ A
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| 批号(Lot Number) | 证书类型 | 货号 |
|---|---|---|
| 分析证书 | G486258 |