Abstract: A method for preparing a gel product instant-dissolving block includes: adding water into a raw material to dissolve the raw material and carrying out concentrating to obtain a gel solution; carrying out a drying treatment on the gel solution to obtain an irregular cellular gel body; grinding the gel body and carrying out screening to obtain gel powder with a particle size being equal to or larger than 80 meshes; moistening the gel powder with 85 to 95% alcohol and carrying out compression at a compression ratio of 30% to 60% to obtain a block, thereby obtaining the gel product instant-dissolving block. The gel product instant-dissolving block of the present invention has a loose pore structure at the inside, has a high superficial area/volume ratio and has a product density of 0.4 to 0.8 g/cm3, and is capable of being rapidly dissolved within 2 minutes in hot water.

Abstract: A method for preparing a gel product instant-dissolving block includes: adding water into a raw material to dissolve the raw material and carrying out concentrating to obtain a gel solution; carrying out a drying treatment on the gel solution to obtain an irregular cellular gel body; grinding the gel body and carrying out screening to obtain gel powder with a particle size being equal to or larger than 80 meshes; moistening the gel powder with 85 to 95% alcohol and carrying out compression at a compression ratio of 30% to 60% to obtain a block, thereby obtaining the gel product instant-dissolving block. The gel product instant-dissolving block of the present invention has a loose pore structure at the inside, has a high superficial area/volume ratio and has a product density of 0.4 to 0.8 g/cm3, and is capable of being rapidly dissolved within 2 minutes in hot water.

Abstract: Disclosed the use of gelatin or deeply processed gelatin materials in the preparation of hair quality-improving compositions.

Abstract: Provided is a method of eliminating the dependence of methanol induced promoter on a single methanol carbon source for expressing foreign polypeptide. The method comprises activating the expression of the promoter requiring methanol induction by increasing the expression quantity of Mit1 polypeptide in cells of methylotrophic yeast, so that the promoter originally depending on methanol induction no longer depends on single methanol and can also express foreign polypeptide.

Abstract: Disclosed the use of gelatin or deeply processed gelatin materials in the preparation of hair quality-improving compositions.

Abstract: Provided is a method of eliminating the dependence of methanol induced promoter on a single methanol carbon source for expressing foreign polypeptide. The method comprises activating the expression of the promoter requiring methanol induction by increasing the expression quantity of Mit1 polypeptide in cells of methylotrophic yeast, so that the promoter originally depending on methanol induction no longer depends on single methanol and can also express foreign polypeptide.

Abstract: An active small-molecule donkey-hide gelatin mixture and a preparation method and application thereof. The active small-molecule donkey-hide gelatin mixture is prepared by using the compound protease comprising the proline protease to perform the enzymatic hydrolysis on the donkey-hide gelatin juice to which no auxiliary material is added. For the active small-molecule donkey-hide gelatin mixture, the weight-average molecular weight ranges from 580 Da to 1300 Da, the peptide segments are distributed from 200 Da to 3000 Da, the dissolution rate in cold water is high, and the content of free amino acid is low; the active small-molecule donkey-hide gelatin mixture may be used for manufacturing small-molecule peptide food and health care food of donkey-hide gelatin.

Abstract: An active small-molecule donkey-hide gelatin mixture and a preparation method and application thereof. The active small-molecule donkey-hide gelatin mixture is prepared by using the compound protease comprising the proline protease to perform the enzymatic hydrolysis on the donkey-hide gelatin juice to which no auxiliary material is added. For the active small-molecule donkey-hide gelatin mixture, the weight-average molecular weight ranges from 580 Da to 1300 Da, the peptide segments are distributed from 200 Da to 3000 Da, the dissolution rate in cold water is high, and the content of free amino acid is low; the active small-molecule donkey-hide gelatin mixture may be used for manufacturing small-molecule peptide food and health care food of donkey-hide gelatin.