Pork preserving method with irradiation

Abstract

The invention discloses a pork preserving method with irradiation, and the method comprises the following steps: rapidly freezing fresh pork at -20 to -10 DEG C for 1-2 hours, then cooling the pork at -2 to 6 DEG C for 5-10 hours, and cutting the pork into chilled meat blocks of 100-500 grams; treating the chilled meat with antioxidants at -2 to 6 DEG C, wherein the antioxidants comprise tea polyphenols; carrying out controlled atmosphere packaging on the chilled meat after antioxidation treatment, wherein in the controlled atmosphere shielding gas used for controlled atmosphere packaging, the gas ratio of oxygen to carbon dioxide to nitrogen gas equals to 70:20:10, or the gas ratio of oxygen to carbon dioxide equals to 75:25; and carrying out irradiation on the chilled meat after controlled atmosphere packaging. The pork preserving method with irradiation combines a controlled atmosphere technique with an irradiation preservation technique, has good sterilizing effect and broad-spectrum sterilization, and can effectively avoid bacterial breeding, prolong the preservation time of meat and keep the meat fresh red, and the irradiation is cold treatment which hardly generates heat effect.

Description

technical field [0001] The invention relates to a pork preservation method, in particular to a method for utilizing irradiation to preserve freshness of pork. Background technique [0002] As the main source of meat for Chinese residents, pork is rich in nutrients, suitable for microbial production and reproduction, and is susceptible to microbial contamination in the environment during its production, processing, transportation and sales, resulting in spoilage and shortened shelf life. , the safety of pork products is getting more and more attention from consumers. [0003] The antiseptic preservation of pork has been an important issue of human research since ancient times. With the change of modern people's lifestyle and rhythm, the traditional pork preservation technology can no longer meet people's needs. It is imperative to study the antiseptic preservation technology of pork. At present, it is believed that any kind of fresh-keeping measures has disadvantages. Compre...

AI Technical Summary

Problems solved by technology

However, studies have shown that when the dosage exceeds a certain range, chemical preservatives will have an impact on human health, such as excessive consumption of benzoate will cause poisoning, nitrous acid and nitrite will produce carcinogenic ammonium nitrite

[0005] Freezing and cryopreservation is also a technical measure commonly used by people. Cold storage is to store meat at a temperature slightly higher than its freezing point, usually between 2 and 4°C, which can inhibit the reproduction of most fungi and prolong the reproduction time of some fungi. , but low temperature preservation has the following disadvantages: 1. The freezing and thawing process will cause ice crystal formation and salting-out effect, which will reduce the quality of meat; high transport costs