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Method for preparing onion juice and onion juice

A technology of onion juice and onion, which is applied in the field of food processing and can solve problems such as unacceptable and unacceptable

Inactive Publication Date: 2019-06-25
妙趣食品(廊坊)有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are commercially available onion juices on the market, but onion juices taste similar to traditional Chinese medicine, and there is a certain gap between the taste and raw materials, so it is not easy to be accepted by people, and it is even more difficult to be accepted by people with poor compliance

Method used

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  • Method for preparing onion juice and onion juice
  • Method for preparing onion juice and onion juice

Examples

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preparation example Construction

[0018] The invention provides a kind of preparation method of onion juice, comprises the following steps:

[0019] (1) heat-treating the onion at 90-100°C, and the heating time is 10-60s;

[0020] (2) cooling the onion after the heat treatment in the step (1) to obtain a cooled onion; the temperature of the cooling is 0-5° C., and the cooling time is 1-3 minutes;

[0021] (3) extract the juice and filter the cooled onion obtained in the step (2), to obtain the onion filtrate;

[0022] (4) Sterilize the onion filtrate obtained in the step (3) to obtain onion juice; the sterilization pressure is 400-600 MPa, and the sterilization time is 3-8 minutes.

[0023] In the present invention, the onion is heated at 90-100°C, and the heating time is 10-60s. The present invention is not particularly limited to the type of onion, preferably one or more of white onion, purple onion or yellow onion; when the onion is preferably two or three of white onion, purple onion or yellow onion In ...

Embodiment 1

[0036] Select fresh and intact purple onions, peel off the outer skin, wash and cut in half from the middle, disperse the bulbs into bulb pieces, put them in hot water at 100°C, place them under the liquid surface for 20 seconds, and quickly put them in cold water at 5°C after taking them out. Cool down for 1min. After the onion is pulled out and drained, the juice is squeezed out, and the squeezed onion filtrate is filtered through a 30-mesh sieve, and then packed into a sterilized PET bottle and sealed. The canned onion juice is subjected to ultra-high pressure sterilization at 550 MPa for 5 minutes.

[0037] The onion juice prepared by the present invention is detected: the prostaglandin A content is 0.79mg / L, the selenium content is 6ug / Kg, and the quercetin content is 63.3mg / L.

[0038] The onion juice prepared in this example presents the natural color and luster of raw materials, and has the natural sweetness of onion in mouthfeel. In addition to common nutritional ele...

Embodiment 2

[0043] Select fresh and intact purple onions (after peeling off the outer skin, cleaning and cutting in half from the middle, disperse the bulbs into bulb pieces, put them in hot water at 90°C, place them under the liquid surface for 50 seconds, put them in cold water at 0°C immediately after taking them out Cool down rapidly for 1min. Pull out the onion and drain the water and squeeze the juice, and the onion filtrate squeezed out is filtered through a 50-purpose filter sieve and then packed into a sterilized PET bottle and sealed. The pressure on the onion juice after the canning is 550MPa, 5min ultra-high pressure sterilization.

[0044] The onion juice prepared by the present invention is detected: the prostaglandin A content is 0.73mg / L, the selenium content is 5ug / Kg, and the quercetin content is 58.7mg / L.

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Abstract

The invention provides a method for preparing an onion juice and the onion juice, and belongs to the technical field of food processing. The method comprises the following steps: (1) heating the onionat 90-100 DEG C for 10-60s; (2) cooling the onion heated by the step (1) to obtain cooled onion, wherein the cooling temperature is 0-5 DEG C, and the cooling time is 1-3 minutes; (3) juicing and filtering the cooled onion obtained in the step (2) to obtain an onion filtrate; (4) sterilizing the onion filtrate obtained in the step (3) to obtain the onion juice, wherein the sterilizing pressure is400-600 MPa, and the sterilization time is 3-8 minutes. The onion juice has a sweet taste and retains the nutritional value of the original onion to the utmost extent.

Description

technical field [0001] The invention relates to the technical field of food processing, in particular to a preparation method of onion juice and onion juice. Background technique [0002] Onion (scientific name: Alliumcepa L.) is a perennial herb of Liliaceae and Allium genus. The bulb is thick, nearly spherical; papery to thin leathery, with thick inner skin and fleshy. Onions are known as the "Queen of Vegetables". Onions contain prostaglandin A, which can reduce peripheral vascular resistance and blood viscosity. It can be used to lower blood pressure, refresh the mind, relieve stress, and prevent colds. In addition, onions can also remove oxygen free radicals in the body, enhance metabolism, anti-aging, and prevent osteoporosis. [0003] At present, there is already commercially available onion juice on the market, but onion juice tastes similar to traditional Chinese medicine, and there is a certain gap between the taste and raw materials, so it is not easy to be acce...

Claims

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Application Information

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IPC IPC(8): A23L19/00
Inventor 刘剑锐徐然廖小军
Owner 妙趣食品(廊坊)有限责任公司
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