Jiqiang Li , Huizhen Wang , Rongrong Liang , Yanwei Mao , Xiaoyin Yang , Xin Luo , Lixian Zhu , Yimin Zhang
{"title":"Effect of super-fast freezing before rigor mortis on quality of bovine M. longissimus lumborum","authors":"Jiqiang Li , Huizhen Wang , Rongrong Liang , Yanwei Mao , Xiaoyin Yang , Xin Luo , Lixian Zhu , Yimin Zhang","doi":"10.1016/j.meatsci.2025.109880","DOIUrl":null,"url":null,"abstract":"<div><div>In order to explore the effects of super-fast freezing (SFF) on beef quality, conventional chilling (CC, 0 ± 2 °C) and very fast chilling (VFC, hot-boned beef loins chilled at −30 °C and then stored at 0 ± 2 °C to bring the temperature down to 0 °C within 5 h <em>post-mortem</em>) were used as controls to investigate the effects of three SFF treatments (−30 °C until the core temperature decreased to −3 °C (SFF–I), −7 °C (SFF–II) and −10 °C (SFF–III), and then stored at 0 ± 2 °C until 24 h <em>post-mortem</em>) on beef tenderness, meat color, water holding capacity, and other related indicators. The results showed that both SFF and VFC improved the tenderness of beef at the early stage of storage compared with CC, and of these SFF–II and SFF–III were the most effective. The SFF has the potential to reduce the cooking loss but increases the purge loss of beef. In addition, SFF has a negative effect on the meat color, but the <em>a</em>* value is still within the acceptable range of consumers. After being treated by SFF, the rate of beef glycolysis was delayed <em>post-mortem</em>. In addition, SFF treatment did not cause a large degree of shortening of sarcomere, but disrupted the muscle fiber structure, contributing to the improvement of muscle tenderness. The results indicate that pre-rigor beef muscles can be deeply frozen, which will not cause obvious shortening with proper freezing and thawing procedures.</div></div>","PeriodicalId":389,"journal":{"name":"Meat Science","volume":"228 ","pages":"Article 109880"},"PeriodicalIF":6.1000,"publicationDate":"2025-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Meat Science","FirstCategoryId":"97","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S030917402500141X","RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"Agricultural and Biological Sciences","Score":null,"Total":0}
引用次数: 0
Abstract
In order to explore the effects of super-fast freezing (SFF) on beef quality, conventional chilling (CC, 0 ± 2 °C) and very fast chilling (VFC, hot-boned beef loins chilled at −30 °C and then stored at 0 ± 2 °C to bring the temperature down to 0 °C within 5 h post-mortem) were used as controls to investigate the effects of three SFF treatments (−30 °C until the core temperature decreased to −3 °C (SFF–I), −7 °C (SFF–II) and −10 °C (SFF–III), and then stored at 0 ± 2 °C until 24 h post-mortem) on beef tenderness, meat color, water holding capacity, and other related indicators. The results showed that both SFF and VFC improved the tenderness of beef at the early stage of storage compared with CC, and of these SFF–II and SFF–III were the most effective. The SFF has the potential to reduce the cooking loss but increases the purge loss of beef. In addition, SFF has a negative effect on the meat color, but the a* value is still within the acceptable range of consumers. After being treated by SFF, the rate of beef glycolysis was delayed post-mortem. In addition, SFF treatment did not cause a large degree of shortening of sarcomere, but disrupted the muscle fiber structure, contributing to the improvement of muscle tenderness. The results indicate that pre-rigor beef muscles can be deeply frozen, which will not cause obvious shortening with proper freezing and thawing procedures.
期刊介绍:
The aim of Meat Science is to serve as a suitable platform for the dissemination of interdisciplinary and international knowledge on all factors influencing the properties of meat. While the journal primarily focuses on the flesh of mammals, contributions related to poultry will be considered if they enhance the overall understanding of the relationship between muscle nature and meat quality post mortem. Additionally, papers on large birds (e.g., emus, ostriches) as well as wild-captured mammals and crocodiles will be welcomed.