期刊
ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES
卷 24, 期 5, 页码 713-722出版社
ASIAN-AUSTRALASIAN ASSOC ANIMAL PRODUCTION SOC
DOI: 10.5713/ajas.2011.10404
关键词
Pseudomonas spp.; Chilled Beef; Model; Shelf life
资金
- MATS-beef cattle system
- national non-profit Special Research-Meat production and processing quality and safety control technology, China
The aim of this study was to confirm Pseudomonas spp. as the specific spoilage organism (SSO) of chilled beef during aerobic storage and to establish a model to predict the shelf life of beef. Naturally contaminated beef was stored at 4 degrees C, and the spoilage limit of Pseudomonas organisms was determined by measuring several quality indicators during storage, including the number of Pseudomonas organisms, total number of bacteria, total volatile basic nitrogen (TVBN) values, L value color scale scores and sensory evaluation scores. The beef was then stored at 0, 4, 7, 10, 15 or 20 degrees C for varying amounts of time, and the number of Pseudomonas organisms were counted, allowing a corresponding growth model to be established. The results showed that the presence of Pseudomonas spp. was significantly correlated to each quality characteristic (p<0.01), demonstrating that Pseudomonas spp. are the SSO of chilled beef and that the spoilage limit was 10(8.20) cfu/g. The Baranyi and Roberts equation can predict the growth of Pseudomonas spp. in beef, and the R(2) value of each model was greater than 0.95. The square root model was used as follows, and the absolute values of the residuals were less than 0.05: mu(1/2)(max) = 0.15604 [T+(-0.08472)] (p<0.01), R(2) = 0.98, lambda(-1/2) = 0.0649+0.0242T (p<0.01, R(2) = 0.94). The model presented here describes the impact of different temperatures on the growth of Pseudomonas spp., thereby establishing a model for the prediction of the shelf life of beef stored between 0 to 20 degrees C.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据