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

Inactive Publication Date: 2013-05-15
ZHEJIANG OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the food preservatives used in the food industry are mostly chemical preservatives, which not only have certain food safety hazards, but also have the disadvantage of narrow antibacterial spectrum in different degrees.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

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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PUM

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Abstract

The invention relates to a compounded preservative regarding dark plum as main material and a preparation method thereof. The natural preservative is prepared from the following materials in percentage by weight: 30-60% of sodium dehydroacetate, 20-30% of a dark plum extract and 10-50% of nisin, wherein the dark plum extract is a powder prepared by drying a dark plum extracting solution. The compounded preservative disclosed by the invention is safe in use and has the advantages of making up for the disadvantage that the antimicrobial spectrum of a single antimicrobial substance is relatively narrow, obviously inhibiting a plurality of gram-positive bacteria and gram-negative bacteria including escherichia coli and staphylococcus aureus, and obviously prolonging the shelf life of aquatic foods, reducing the dosage of the chemical preservative and improving the food safety when applied to the aquatic foods.

Description

technical field [0001] The invention relates to the technical field of food preservatives, in particular to a compound preservative obtained by compounding ebony extracts, sodium dehydroacetate and nisin by refining ebony extracts, and is mainly used for aquatic products antiseptic. Background technique [0002] Compared with the muscle tissue of livestock such as pigs, cattle, and sheep, aquatic products represented by fish are shorter and thinner in terms of muscle fiber length and diameter. Due to the significant differences in muscle tissue structure, coupled with the rich protein content and high water content of aquatic products, aquatic products are extremely susceptible to spoilage due to the influence of microorganisms during fishing, storage, processing and sales. Generally, the low-temperature control method is adopted for the control of microorganisms in the storage and processing of aquatic products; for the processed cooked aquatic products such as dried fish ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L3/3472A23L3/3571A23L3/358
Inventor 邓尚贵霍健聪
Owner ZHEJIANG OCEAN UNIV
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