Effects Of Different Storage Temperature And Time On The Quality Of Frozen Pork

China is a major of the meat products and consumption countries all over the world. With the development of society and people’s life, more and more volumes of meat are required. With the enlargement of domestic frozen market, it is very critical to study the effect of storage conditions on the quality of frozen meat. The aim of the study was to identify the effect of different time and storage temperature on the quality of frozen meat, and supply basic theoretical foundation on selecting the right storage conditions during frozen pork processing as well.The pork color, pH value, microbial counts, cutting force, thawing loss and total volatile basic nitrogen (TVBN) were tested to study the effect of different time and freezing storage conditions on the quality of packed frozen pork.The results showed:1. As the red of frozen pork,optimal temperature for frozen pork was-18℃,-26℃and-35℃, the storage time should not be too long. Considering the production cost,-18℃was the optimal temperature to store froze pork with the red A color.2. The pH value of frozen pork was increased obviously when frozen pork was stored in-5℃.The pH value of frozen pork was not change a lot and not stable during frozen stored in-18℃,-26℃and-35℃. Therefore, The pH value could only be the referenced parameter to measure the freshness of frozen pork.3. Total bacterial count was around below to106logCFU/g during frozen stored in-18℃,-26℃and-35℃, the frozen pork was going to deteriorate after6months storing in-5℃.4. The cutting force of frozen pork was more than39.2N (which means the meat was not tender) when the frozen stored in-18℃,-26℃and-35℃until the9months.5. The thawing loss was15.6%、9.3%�'�8.3%, respectively, at-18℃,-26℃and-35℃frozen storage for12months. Compared with the fresh pork it was significant difference.6. The TVBN was below to25mg/100g (which means the frozen pork keeps freshness of level1) storing in-18℃,-26℃and-35℃. It was going to deteriorate after9months storing in-5℃.Summary:frozen pork was stored for6months with-18℃of storing temperature, frozen pork was stored for12months with-26℃of storing temperature as well...