Acidic capillary electrophoresis identification method for high molecular weight glutelin subunit of wheat
A technology of capillary electrophoresis and gluten subunit, which is applied in the direction of measuring device, material separation, analysis material, etc., can solve the problems of high cost, high analysis cost, labor and time-consuming, etc., and achieves easy application, low sample consumption, high resolution high degree of effect
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Embodiment 1
[0050] 1. Material sampling
[0051] The seeds of the wheat variety Hope were used as test materials, and 10-15 mg of the endosperm-free end of the seeds were randomly selected for gluten extraction and capillary electrophoresis.
[0052] 2. Sample Preparation
[0053] High molecular weight glutenin subunit (HMW-GS) extraction method:
[0054] Alternative reagents:
[0055] A. 50% n-propanol
[0056] B. 50% n-propanol + 1% DTT
[0057] C. Acetone (analytical pure)
[0058] D. 20% acetonitrile + 0.1% trifluoroacetic acid (TFA)
[0059] Operation method:
[0060] (1) Take a single seed, cut off the endosperm-free end (about 10-15mg) with a blade, accurately weigh it, crush it into fine powder with sulfuric acid paper and a small hammer, and put it into a 1.5ml centrifuge tube;
[0061] (2) Add 1ml of 50% n-propanol, extract in a water bath at 45°C for 10 minutes, centrifuge at 10000rpm for 5 minutes, and remove the supernatant;
[0062] (3) Repeat the above steps three t...
Embodiment 2
[0109] 1. Material sampling
[0110] The seeds of wheat varieties China Spring, Hope and Durum wheat were used as test materials respectively, and 10-15 mg of the endosperm-free end of the seeds were randomly selected for gluten extraction and capillary electrophoresis.
[0111] 2. Sample Preparation
[0112] High molecular weight glutenin subunit (HMW-GS) extraction method:
[0113] The selected spare reagents and operation methods are the same as in Example 1, and the obtained HMW-GS precipitate can be fully dissolved by adding 20% acetonitrile + 0.1% w / v trifluoroacetic acid (TFA) in proportion (w / v: 1mg+10μl) , Capillary electrophoresis analysis can be performed after centrifugation; the precipitate can also be stored at -20°C, and dissolved when needed for capillary electrophoresis analysis.
[0114] 3. High performance capillary electrophoresis (HPCE)
[0115] equipment
[0116] High-efficiency capillary electrophoresis system (equipped with software for system ope...
Embodiment 3
[0157] 1. Material sampling
[0158] The seeds of club wheat Club20 and bread wheat variety Kontrast were used as test materials respectively, and 10-15 mg of the endosperm-free end of the seeds were randomly selected for gluten extraction and capillary electrophoresis. Then, the samples prepared by mixing the high molecular weight glutenin subunits extracted from the seeds of club wheat Club20 and Kontrast in a ratio of 1:1 were used as test materials.
[0159] 2. Sample Preparation
[0160] High molecular weight glutenin subunit (HMW-GS) extraction method:
[0161] The selected spare reagents and operation method are the same as in Example 1, and the obtained HMW-GS precipitate can be fully dissolved by adding 20% acetonitrile+0.1% w / v trifluoroacetic acid (TFA) in proportion (w / v: 1 mg+10 μl) , Capillary electrophoresis analysis can be performed after centrifugation; the precipitate can also be stored at -20°C, and dissolved when needed for capillary electrophoresis ana...
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