Process for grafting and modifying wheat gluten proteins by aid of glucan
A wheat gluten protein, graft modification technology, applied in the field of protein modification technology, can solve the problems of difficult grafting of glucan, low graft rate and the like, improve thermal stability and solubility, and promote graft rate. Effect
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[0015] Example 1:
[0016] A glucan graft modification process of wheat gluten protein, the preparation steps are as follows:
[0017] Step (1): Weigh a certain amount of wheat gluten and dissolve it in a PBS solution with a pH of 8.0, so that the protein concentration is 12mg / L;
[0018] Step (2): Add dextran according to the ratio of wheat gluten / glucan (W / W) of 230% and mix, shake until the dissolution is complete, according to the wheat gluten / trehalose (W / W) of 600% Add trehalose in the proportion of, shake until it is completely dissolved;
[0019] Step (3): freeze-dry the mixed solution, then place the freeze-dried sample in a sealed desiccator with a saturated KBr solution at the bottom, place it in a 58℃ incubator for 5 minutes, and then transfer to a 50℃ incubator The reaction was continued for 90 hours to terminate the reaction.
Example Embodiment
[0020] Example 2:
[0021] A glucan graft modification process of wheat gluten protein, the preparation steps are as follows:
[0022] Step (1): Weigh a certain amount of wheat gluten and dissolve it in a PBS solution with a pH of 8.0, so that the protein concentration is 12mg / L;
[0023] Step (2): Add dextran according to the ratio of wheat gluten / glucan (W / W) of 250% and mix, shake until the dissolution is complete, according to the wheat gluten / trehalose (W / W) of 500% Add trehalose in the proportion of, shake until it is completely dissolved;
[0024] Step (3): freeze-dry the mixed solution, then place the freeze-dried sample in a sealed desiccator with a saturated KBr solution at the bottom, place it in a 58°C incubator for 10 minutes, and then transfer to a 52°C incubator The reaction continued for 102 hours, and the reaction was terminated.
Example Embodiment
[0025] Example 3:
[0026] A glucan graft modification process of wheat gluten protein, the preparation steps are as follows:
[0027] Step (1): Weigh a certain amount of wheat gluten and dissolve it in a PBS solution with a pH of 8.0, so that the protein concentration is 12mg / L;
[0028] Step (2): Add dextran according to the ratio of wheat gluten / glucan (W / W) of 240% and mix, shake until the dissolution is complete, according to the wheat gluten / trehalose (W / W) of 550% Add trehalose in the proportion of, shake until it is completely dissolved;
[0029] Step (3): freeze-dry the mixed solution, then place the freeze-dried sample in a sealed desiccator with a saturated KBr solution at the bottom, place it in a 58℃ incubator for 8 minutes, and then transfer to a 50℃ incubator The reaction was continued for 95h, and the reaction was terminated.
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