Enteromorpha compound antistaling agent and preparation method thereof
A composite fresh-keeping, prolifera technology, applied in food preservation, food science, application and other directions, can solve problems such as danger, achieve the effect of protecting the environment, strong antibacterial ability, and reducing water loss
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[0013] Example 1
[0014] A composite preservative of Enteromorpha and its preparation method, which consists of the following components in weight percentages. Enteromorpha extract 0.5%, 55% deacetylation degree chitosan and 65% deacetylation degree chitosan equal mixture 3% , The rest is 0.1mol / L acetic acid solution; the preparation method of Enteromorpha extract includes the following steps:
[0015] a. After dehydrating the fresh Enteromorpha, spray-dry it and crush it when the water content is less than 5%;
[0016] b. Add 60% ethanol solution to Enteromorpha powder for soaking. The material-liquid ratio of Enteromorpha powder to ethanol solution is 1g:5ml. After soaking for 2 hours, reflux and extract in water at 80℃ for 2 hours;
[0017] c. Centrifuge the extract at 4000 rpm for 20 minutes, and take the supernatant;
[0018] d. Rotary evaporate the supernatant to recover ethanol, and collect the crude extract of Enteromorpha;
[0019] e. The crude extract of Enteromorpha is CO 2...
Example Embodiment
[0020] Example 2
[0021] A composite preservative of Enteromorpha and its preparation method. It is composed of the following components in weight percentage. Enteromorpha extract 2%, 55% deacetylation degree chitosan and 65% deacetylation degree chitosan equal mixture 1% , The rest is 0.1mol / L acetic acid solution; the preparation method of Enteromorpha extract includes the following steps:
[0022] a. After dehydrating the fresh Enteromorpha, spray-dry it and crush it when the water content is less than 5%;
[0023] b. Add 60% ethanol solution to Enteromorpha powder for soaking. The material-liquid ratio of Enteromorpha powder to ethanol solution is 1g:5ml. After soaking for 2 hours, reflux and extract in water at 70°C for 4 hours;
[0024] The remaining steps are the same as in Example 1.
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