牛肉保存过程中总挥发性盐基氮变化规律的探索

Investigation on the Change Patten of Total Volatile Basic Nitrogen in Beef During Storage

通过对屠宰后24h的牛胴体采样,分别放在分割间和排酸间保存,每12h对牛肉中总挥发性盐基氮(TVB-N)含量进行测定。检测结果表明,随保存时间的延长,挥发性盐基氮含量逐渐升高,不同保存条件下TVB-N存在明显差异,分割间保存的牛肉明显高于排酸间保存的牛肉,分割间保存的牛肉在60h时超过标准15mg/100g,而排酸间保存的牛肉在108h时超过标准15mg/100g。

Carcass at 24 h after slaughter were divided into 2 groups and stored at cutting and deboning room and acid discharge room respectively,and then the content of total volatile basic nitrogen（TVB-N） in beef samples was determined every 12 h. Results showed that the content of TVB-N increased with the increase of storage time,and there was obvious difference in TVB-N under different storage conditions,among them the TVB-N of beef stored at cutting and deboning room was obviously higher than that at acid discharge room. The beef stored at cutting and deboning room for 60 h exceeded the standard（15 mg/100 g） ,while that stored at acid discharge room for 108 h exceeded the standard.