Use of Tiannv Magnolia extract as a bacteriostatic agent
A technology of magnolia extract, which is applied in food ingredients containing natural extracts, food ingredients as antimicrobial preservation, medical preparations of non-effective ingredients, etc., can solve problems that have not been reported, and achieve broad application range, Less added amount and less irritating effect
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Embodiment 1
[0025] Example 1: Preparation of Tiannv Magnolia Extract by Steam Distillation
[0026] Take 50kg of Magnolia leaves, crush them to 20 mesh, put them in 4 steam distillation reaction kettles in series, disperse them evenly, add a net cover, feed water vapor, open the condenser, react for 1 hour, collect the extract, separate oil and water , to obtain 12.8kg of Tiannv Magnolia extract. Concentrate again to a certain ratio to obtain the extract of Magnolia magnolia used in this experiment.
Embodiment 2
[0027] Embodiment 2: Preparation of Tiannv Magnolia Extract by Water Extraction
[0028] Take 1 kg of Magnolia chinensis leaves and crush them to 40 mesh, add distilled water according to the mass-volume solid-liquid ratio of 1:3, and at the same time add 2wt% cellulase based on the total mass of Magnolia chinensis leaves, extract at 50-60°C for 2 hours, filter, Obtain the filtrate, add 0.5wt% based on the total mass of the filtrate and a compound decolorizing agent based on 0.5wt% of the total mass of the filtrate and a mass compounding ratio of 1:1 and activated clay for decolorization, and pass through a ceramic membrane to obtain 2.4 kg of Magnolia radiata extract.
Embodiment 3
[0029] Embodiment 3: Alcoholic extraction method prepares Magnolia Magnolia extract
[0030] Take 1 kg of magnolia leaves and crush them to 40 mesh, add 75% ethanol by volume according to the mass volume solid-liquid ratio of 1:3, stir at 70°C, condense and reflux, extract for 2 hours, and filter to obtain the filtrate. Use a rotary evaporator to remove the ethanol in the filtrate until there is no alcohol smell in the solution, and add water to replace the evaporated ethanol. Add a compound decolorizing agent based on 0.5wt% of the total mass of the filtrate and a mass compounding ratio of 1:1 of activated carbon and activated clay for decolorization, remove the decolorizing agent through a ceramic membrane, and obtain 1.1-3.3 kg of Magnolia magnolia extract.
[0031] Bacteriostatic effect test
[0032] 1.1 Inhibition (mold) bacteria test
[0033] Get 2012, 2014, 2015 according to the Magnolias extract prepared in Example 1, detect the microbial situation in these three Mag...
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