Methods to Eliminate Nitrite in Salted Fish

A nitrite and salted fish technology, applied in the field of nitrite treatment, can solve the problems of difficult operation, ineffective effect, and inability to greatly reduce the content of nitrate and nitrite in salted fish, and achieve strong meat flavor, Soft and smooth taste

Inactive Publication Date: 2016-08-24
BOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the above-mentioned deficiencies, the purpose of the present invention is to provide a method for eliminating nitrite in salted fish, to solve the problem that in the prior art, the content of nitrate and nitrite in salted fish cannot be greatly reduced, the operation is difficult, and the effect is not good. Obvious and difficult to generalize problems

Method used

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  • Methods to Eliminate Nitrite in Salted Fish

Examples

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Comparison scheme
Effect test

Embodiment 1

[0027] The method for eliminating nitrite in salted fish of the present invention comprises the following steps:

[0028] (1) Rinse the salted fish with clean water to remove the surface salt, divide it into blocks, place it in 8% dilute hydrochloric acid, soak it for about 18 hours, then wash and drain the block salted fish, repeat twice;

[0029] (2) Soak the washed massive salted fish in deionized water at 50°C for 1 hour, and perform centrifugation, repeating 4 times;

[0030] (3) Soak the processed salted fish in the conditioner for 10 minutes, and perform ultrasonic treatment while soaking. The ultrasonic power is 180-220W, the ultrasonic frequency is 35KHZ, and the treatment time is 18 minutes, then pick up and drain;

[0031] (4) Put the treated salted fish into the pool, inoculate autotrophic denitrifying bacteria on it, use inorganic sulfur as the substrate, provide hydrogen and inorganic carbon sources, and denitrifying bacteria use NO under anaerobic conditions 3 ...

Embodiment 2

[0040] The method for eliminating nitrite in salted fish of the present invention comprises the following steps:

[0041] (1) Rinse the salted fish with clean water to remove the surface salt, divide it into blocks, put it in 10% dilute hydrochloric acid, soak it for about 22 hours, then wash and drain the block salted fish, repeat twice;

[0042] (2) Soak the washed massive salted fish in deionized water at 70°C for 1 hour, and perform centrifugation, repeating 5 times;

[0043](3) Soak the processed salted fish in the conditioner for 20 minutes, and perform ultrasonic treatment while soaking. The ultrasonic power is 200W, the ultrasonic frequency is 40KHZ, and the treatment time is 20 minutes, then picked up and drained;

[0044] (4) Put the treated salted fish into the pool, inoculate autotrophic denitrifying bacteria on it, use inorganic sulfur as the substrate, provide hydrogen and inorganic carbon sources, and denitrifying bacteria use NO under anaerobic conditions 3 -...

Embodiment 3

[0053] The method for eliminating nitrite in salted fish of the present invention comprises the following steps:

[0054] (1) Rinse the salted fish with clean water to remove the surface salt, divide it into blocks, put it in 15% dilute hydrochloric acid, soak it for about 28 hours, then wash and drain the block salted fish, repeat 3 times;

[0055] (2) Soak the washed massive salted fish in deionized water at 85°C for 2 hours, and perform centrifugation, repeating 6 times;

[0056] (3) Soak the processed salted fish in the conditioner for 30 minutes, and perform ultrasonic treatment while soaking. The ultrasonic power is 220W, the ultrasonic frequency is 45KHZ, and the treatment time is 25 minutes, then picked up and drained;

[0057] (4) Put the treated salted fish into the pool, inoculate autotrophic denitrifying bacteria on it, use inorganic sulfur as a substrate, provide hydrogen and inorganic carbon sources, and denitrifying bacteria use NO under anaerobic conditions 3 ...

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Abstract

The invention discloses a method for eliminating nitrite in salted fish. The salted fish is washed with clean water to remove the surface salt, divided into blocks, soaked in dilute hydrochloric acid, and then the block-shaped salted fish is washed and drained; The washed block salted fish is soaked in deionized water, and centrifuged; the treated salted fish is soaked in a conditioner, and ultrasonic treatment is performed while soaking; the treated salted fish is put into a pool, and the Autotrophic denitrifying bacteria are inoculated on the surface, and inorganic sulfur is used as a substrate to provide hydrogen and passive sources; oxidants are put into the pool to remove nitrite. On the premise of ensuring the characteristics of traditional salted fish, the present invention can greatly eliminate the nitrite produced in the pickling process of salted fish through the regulator combined with ultrasonic treatment, reduce the possibility of the danger of nitrite in salted fish to the human body, and obtain Salted fish products with low salt content also take into account the antiseptic and fresh-keeping effect of salted fish under low-salt conditions, maintaining a strong meaty aroma and a soft and smooth taste.

Description

technical field [0001] The invention relates to the technical field of nitrite treatment, in particular to a method for eliminating nitrite in salted fish. Background technique [0002] Salted fish is a traditional processed and preserved aquatic product, which is favored by the public because of its unique flavor. With the improvement of consumers' food safety awareness, its safety issues have also attracted people's attention. In view of the high incidence of nasopharyngeal cancer and gastric cancer in the southern coastal areas, many scholars have conducted nitrate and nitrite tests on pickled aquatic products. Nitrosamine and other content detection, detected different levels of carcinogen nitrosamine. In fish food, especially those pickled with coarse salt or nitrite as a preservative, the content of nitrosamines can be as high as about 10-100 μg / kg, because coarse salt contains nitrate and nitrite, of which nitrate Under the action of microorganisms, it can be reduce...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23L17/10A23L5/20
Inventor 张丽华励建荣李学鹏仪淑敏孙协军李秀霞高虹毕海燕白凤翎曾凌冯彦博马春颖王桂娇赵丽红徐永霞
Owner BOHAI UNIV
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