Preservative compounded by lotus leaf extract and eleochairis toberosa peel extract and preparation method of preservative

The technology of water chestnut bark extract and lotus leaf extract is applied in the field of preservative compounded by lotus leaf and water chestnut bark extract and its preparation field, which can solve the problems of poor effect, bitter taste of food, narrow use range and the like, and achieves high performance. The effect of biosafety, easy availability of raw materials and low price

Inactive Publication Date: 2015-03-25
ZHONGKAI UNIV OF AGRI & ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still many problems in the industrial application of its antibacterial active ingredients
For example, because most foods are acidic, the effect of antibacterial active ingredients of lotus leaf is affected; ordinary extraction process will cause a large loss of antibacterial active ingredients of lotus leaf, the antibacterial effect is not ideal, and the end product contains more impurities, etc. Difficult problem; with the same dosage, the bacteriostatic agent extracted from lotus leaf is not as effective as chemically synthesized preservatives, and large doses will cause

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0030] A preservative compounded with lotus leaf and water chestnut skin extracts and a preparation method thereof, comprising the following steps and process conditions:

[0031] ①Pretreatment: wash and drain the fresh lotus leaves, then blow dry them at 60-70°C until the moisture content is below 8%, crush them, pass through a 20-mesh sieve, and seal them for later use. After washing and draining the fresh water chestnut skin, dry it in a blast drying oven at 60-70°C with a moisture content below 8%, crush it with a high-speed pulverizer, pass it through a 20-mesh sieve, and seal it for future use.

[0032] ②Extraction: The extraction method of lotus leaf crude extract is: take the dried and pulverized lotus leaf and place it in a condensation reflux device, add 50-55% (V / V) ethanol, and the ratio of solid to liquid is 1:40-50 (m / V), extracted at 70-75°C for 1.5-2.0h, cooled and filtered to obtain crude lotus leaf extract. The extraction method of the crude extract of wate...

Embodiment 1

[0038] Cold fresh meat: take fresh pork as an example

[0039] Dilute the compound agent with deionized water to form a 1.5-2.0% solution. Soak the fresh meat in the compound agent for 5-10 minutes, take it out and let it dry slightly, then pack it in a fresh-keeping bag and store it in a refrigerator at 0-4°C. The test results show that the shelf life of pork treated with the preservative can be extended by 3-5 days.

Embodiment 2

[0041] Cakes: take horseshoe cake as an example

[0042]Dilute the compound agent with deionized water to a 1.5-2.0% solution, add horseshoe powder at a solid-to-liquid ratio of 1:2 (m / V), and stir to make a uniform raw powder slurry. Stir fry the granulated sugar until golden yellow, add water at a solid-to-liquid ratio of 3:5 (m / V) and cook until dissolved to make a syrup. Add it to raw flour slurry while it is hot, the ratio of syrup to raw flour slurry is 1:1 (V / V), stir evenly, pour into a container, steam for 20-30min, cut into pieces after cooling, and vacuum pack in 10cPE nylon composite bag, Store in refrigerated conditions at 8-10°C. The results show that the shelf life of the horseshoe cake added with the preservative can be extended by 7-14 days.

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PUM

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Abstract

The invention relates to a preservative compounded by a lotus leaf extract and an eleochairis toberosa peel extract and a preparation method of the preservative. The method comprises the following steps: respectively extracting the lotus leaf extract and the eleochairis toberosa peel extract by adopting an ethanol method; respectively purifying the lotus leaf extract and the eleochairis toberosa peel extract by adopting resin; carrying out freeze drying after purifying, so as to obtain extract powder; and mixing the lotus leaf extract powder with the eleochairis toberosa peel extract powder at a certain ratio, so as to obtain the compound preservative. The compound preservative is capable of prolonging the shelf life of fresh meat, cakes and soft cans, and has the advantages of low toxicity, high efficiency, broad-spectrum bacteriostasis and the like.

Description

technical field [0001] The invention relates to a preservative and a preparation method thereof, in particular to a preservative compounded with lotus leaf and water chestnut skin extracts and a preparation method thereof. Background technique [0002] Preservatives are one of the main additives in the food industry. The preservatives currently used in my country are mainly chemically synthesized preservatives such as benzoic acid and sorbic acid. Although government agencies and academia in various countries have conducted strict and detailed toxicological research and evaluation on the current food preservatives, and formulated corresponding regulations and detailed use standards to ensure the safety of consumers, but for the sake of health Concerned, consumers are more advocating natural food preservatives obtained from natural animals and plants through extraction and processing. Therefore, the development of natural food preservatives with strong antibacterial properti...

Claims

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Application Information

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IPC IPC(8): A23L3/3481
CPCA23L3/3472
Inventor 陈海光刘晓艳叶思平曾晓房
Owner ZHONGKAI UNIV OF AGRI & ENG
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