Composite biological fresh keeping agent and application thereof to fresh keeping of edible mushrooms
A technology of biological preservatives and edible fungi, which is applied in the fields of application, fruit and vegetable preservation, food ingredients containing natural extracts, etc., can solve the problems of short preservation time, inconvenient use, narrow antibacterial spectrum, etc., and extend the storage period and shelf life. period, inhibition of breathing intensity, and reasonable proportioning effect
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Embodiment 1
[0045] Example 1 Preparation of Composite Biological Preservative
[0046] A composite biological preservative comprises the following components in parts by weight: 5 parts of edible fungus enzymatic hydrolyzed peptide, 20 parts of chitosan, 5 parts of Chinese medicine extract, 5 parts of spice extract, 5 parts of lactic acid bacteria metabolites, and 960 parts of water .
[0047] The preparation method comprises the following steps:
[0048] (1) Preparation of edible fungus enzymatic peptides: S1. Use shiitake mushrooms, oyster mushrooms, enoki mushrooms and processing by-products as raw materials, dry them at 60°C to constant weight, grind them, mix them with water at a material-to-liquid ratio of 1:20, and homogenate , to obtain the homogenate; S2. Put the homogenate in the enzymolysis reactor, add serine protease according to 0.1% of the raw material mass, the enzyme activity is 100U / mg, control the pH to 6.0, hydrolyze at 40°C for 4 hours, and inactivate the enzyme at 8...
Embodiment 2
[0054] Example 2 Preparation of Composite Biological Preservative
[0055] A composite biological preservative comprises the following components in parts by weight: 5 parts of edible fungus enzymatic hydrolyzed peptide, 20 parts of chitosan, 5 parts of Chinese medicine extract, 5 parts of spice extract, 5 parts of lactic acid bacteria metabolites, and 960 parts of water .
[0056] The preparation method comprises the following steps:
[0057] (1) Preparation of edible fungus enzymatic peptides: S1. Use shiitake mushrooms, oyster mushrooms, enoki mushrooms and processing by-products as raw materials, dry them at 60°C to constant weight, grind them, mix them with water at a material-to-liquid ratio of 1:20, and homogenate , to obtain the homogenate; S2. Put the homogenate in the enzymolysis reactor, add serine protease according to 0.1% of the raw material mass, the enzyme activity is 100U / mg, control the pH to 6.0, hydrolyze at 40°C for 4 hours, and inactivate the enzyme at 8...
Embodiment 3
[0063] Example 3 Preparation of Composite Biological Preservative
[0064] A composite biological preservative includes the following components in parts by weight: 10 parts of edible fungus enzymatic peptide, 30 parts of chitosan, 10 parts of Chinese medicine extract, 10 parts of spice extract, 10 parts of lactic acid bacteria metabolites, and 930 parts of water .
[0065] The preparation method comprises the following steps:
[0066](1) Preparation of edible fungus enzymatically hydrolyzed peptides: S1. Using Hericium erinaceus, Bailing mushroom, Pleurotus eryngii and processing by-products as raw materials, dry at 70°C to constant weight, crush, and mix with Mix with water and homogenize to obtain a homogenate; S2. Put the homogenate in an enzymolysis reactor, add metalloprotease according to 0.2% of the raw material mass, the enzyme activity is 100U / mg, control the pH to 6.5, and hydrolyze at 45°C for 3 hours , inactivate the enzyme at 90°C for 15min, centrifuge at 8000r...
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