Compounded preservative regarding dark plum as main material and preparation method thereof
A technology of compounding preservatives and main raw materials, applied in food science, food preservation, application, etc., can solve problems such as food safety hazards and narrow antibacterial spectrum, achieve expansion of antibacterial range, prolong shelf life, and avoid food safety hidden effect
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Embodiment 1
[0020] (1) Accurately weigh a portion of ebony plums, remove the pits by hand, beat in a high-speed homogenizer at 5000r / min for 15 minutes, add distilled water at a ratio of 1:20 (mass ratio of ebony plums to distilled water), heat to a slight boil, keep for 2 hours, cool Filter after cooling, add distilled water to the filter residue according to the amount of water added for the first time, heat to a slight boil, keep for 2 hours, cool and filter, add the same amount of water to the filter residue, heat to a slight boil, keep for 2 hours, filter after cooling, and combine 3 The second filtrate was concentrated to a concentration of 1 g of the original drug / mL. The concentrated solution is spray-dried, the air inlet temperature is 170° C., and the air outlet temperature is 80° C. to obtain the ebony extract.
[0021] (2) Accurately weigh 6.0g of sodium dehydroacetate, 3.0g of ebony extract, and 1.0g of Nisin, and fully mix the above components to form 10.0g of composite pres...
Embodiment 2
[0023] (1) Weigh a portion of ebony plum, manually remove the core, place it in a high-speed homogenizer for 5000r / min beating for 15 minutes, add distilled water according to the mass ratio of 1:30 (mass ratio of ebony plum to distilled water), heat to a slight boil, and keep 1.5h, filter after cooling, add distilled water to the filter residue according to the amount of water added for the first time, heat to a slight boil, keep for 1.5h, filter after cooling, add the same amount of water again to the filter residue, heat to a slight boil, keep for 1.5h, cool After cooling, filter, combine the filtrates three times, and concentrate to a concentration of 1.5 g of the original drug / mL. The concentrated solution is spray-dried, the air inlet temperature is 180° C., and the air outlet temperature is 85° C. to obtain the ebony extract.
[0024] (2) Accurately weigh 4.5g of sodium dehydroacetate, 2.5g of ebony extract, and 3.0g of Nisin, and fully mix the above components to form ...
Embodiment 3
[0026] (1) Weigh a portion of ebony plum, manually remove the core, place it in a high-speed homogenizer for 5000r / min beating for 15 minutes, add distilled water according to the mass ratio of 1:40 (mass ratio of ebony plum to distilled water), heat to a slight boil, and keep 1h, filter after cooling, add distilled water to the filter residue according to the amount of water added for the first time, heat to a slight boil, keep for 1h, filter after cooling, add the same amount of water again to the filter residue, heat to a slight boil, keep for 1h, and filter after cooling , combined the filtrates three times, and concentrated to a concentration of 2 g of the original drug / mL. The concentrated solution is spray-dried, the air inlet temperature is 190° C., and the air outlet temperature is 90° C. to obtain the ebony extract.
[0027] (2) Accurately weigh 4.0g of sodium dehydroacetate, 2.0g of ebony extract, and 4.0g of Nisin, and fully mix the above components to form 10.0g o...
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