CO-containing modified atmosphere packaging freshness-keeping method for chilled fresh pork
A technology of modified atmosphere packaging and fresh-keeping methods, which is applied to the preservation of meat/fish with chemicals, etc., which can solve the problems of short shelf life and unsatisfactory sales status of chilled fresh pork, and achieve the purpose of enhancing the desire to buy, protecting the color of meat, and improving the redness value effect
Inactive Publication Date: 2014-03-19
SHANDONG AGRICULTURAL UNIVERSITY
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Problems solved by technology
[0004] In order to solve the problems of short shelf life and unsatisfactory sales status of chilled pork, the present invention provides a CO2-containing modified atmosphere fresh-keeping packaging method for chilled pork
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example 1
[0021] This embodiment takes the CO modified atmosphere preservation of chilled fresh pork as an example:
[0022] The tray packaging box used in this example is the TQBC-0775 box produced by Sealed Air Corporation of the United States, with a size of 224mm*133mm*40mm; oxygen permeability ≤ 10ml / m 2 / 24Hr(23℃,0.1MPa), water vapor transmission rate≤15g / 24h,m 2 (38°C, 90% R.H.). The plastic packaging film used is Lid1050 / 550 Lidstock film produced by Sealed Air, USA, with a film thickness of 1.0 mil; the main material is linear low-density polyethylene; tensile strength (1000psi): longitudinal 14.7, transverse 13.0; oxygen permeability (ml / 24 hours, m 2 ): less than 20.0 at 40, ℉100%RH, less than 6.0 at 40, ℉0%RH, less than 5.0 at 73, ℉0%RH; water vapor transmission rate≤1.0g / 24h,m 2 (40, ℉100%RH); the recommended temperature is 90-60℉. The modified atmosphere packaging machine model is Dajiang Machinery DT-6D.
[0023] The modified atmosphere fresh-keeping packaging proces...
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The invention relates to a CO-containing modified atmosphere packaging freshness-keeping method for chilled fresh pork. The CO-containing modified atmosphere packaging freshness-keeping method comprises the following steps: discharging acid of the chilled fresh pork for 24 hours and dividing the chilled fresh pork into meat blocks with the weight of about 200g-250g; and putting each meat block into a tray packaging box to be subjected to modified atmosphere packaging. In a modified atmosphere packaging process, gas components and volume ratios are as follows: 0.4% of CO, 30% of CO2 and 69.6% of N2; the ratio of an upper space height to the thickness of each meat block is 1.5:1. After the packaging, the storage temperature is 0-4 DEG C. According to the CO-containing modified atmosphere packaging freshness-keeping method for the chilled fresh pork, the goods shelf of the chilled fresh pork under a cold storage condition (0-4 DEG C) can be prolonged to more than 20 days from 4 days under a previous oxygen storage manner; the red degree and the brightness value of a product in a storage period are obviously improved and the color, the luster and the quality are improved.
Description
(1) Technical field [0001] The invention relates to a CO-containing modified atmosphere packaging preservation method for chilled fresh pork, belonging to the field of preservation of meat and meat products. (2) Background technology [0002] With the improvement of people's living standards, the change of consumption concept and the continuous improvement of the cold chain, chilled meat has become more and more favored by consumers. Compared with frozen meat, chilled meat can well maintain the original quality and tissue state, avoiding the loss of juice and quality deterioration of frozen meat during thawing. However, under low-temperature refrigeration conditions, chilled fresh meat is easily spoiled, has a short shelf life, serious juice loss, and serious safety problems, which have severely limited its industrialization and marketization. Therefore, it will be of great economic significance to develop the fresh-keeping technology of chilled pork, prolong the shelf life...
Claims
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Inventor 罗欣梁荣蓉戴瑨朱立贤毛衍伟牛乐宝
Owner SHANDONG AGRICULTURAL UNIVERSITY