摘要
为探究鲢鱼腐败菌(荧光假单胞菌、腐败希瓦氏菌和温和气单胞菌)对冷藏鲢鱼的致腐能力,以接种鲢鱼腐败菌(荧光假单胞菌、腐败希瓦氏菌和温和气单胞菌)的无菌鲢鱼块为研究对象,通过定期测定其在4℃贮藏过程中的感官、TVB-N值、TMA值、电导率等新鲜度指标以及腐败菌的变化情况,并以腐败菌生长动力学参数和腐败代谢产物产量因子(YTVB-N/CFU和YTMA/CFU)为指标,探讨冷藏过程中鲢鱼腐败菌的腐败能力。研究表明,接种3种腐败菌的无菌鱼块腐败速度明显优于无菌对照组;腐败希瓦氏菌的腐败能力最强,荧光假单胞菌的YTMA/CFU较低。3种腐败菌都有一定的腐败能力,但在较高数量时才会出现明显的致腐作用。
To explore the spoilage abilities of specific spoilage organism Pseudomonas fluorescens, Aeromonas so- bira and Shewanella putrefaciens on refrigerated silver carp, freshness indexes including sensory evaluation, TVB-N, TMA, electric conductivity and total viable counts of sterile silver carp tissue respectively inoculated with these three kinds of spoilage bacteria were measured periodically. The yield factor for production of metabolite and the cell con- centration at off-odour period were quantitatively measured. Results showed the freshness of sterile silver carp tissue blocks inoculated with spoilage bacteria deteriorated obviously compared with the sterile control group. Shewanella pu- trefaciens had the strongest spoilage ability, and YTMA/CFU of Pseudomonas fluorescens was lower than that of Shewanella putrefaciens and Aeromonas sobira. Three kinds of spoilage bacteria had certain spoilage abilities. However, the spoil- age effect was not significant until the bacteria reached high counts.
出处
《食品与发酵工业》
CAS
CSCD
北大核心
2017年第6期140-145,共6页
Food and Fermentation Industries
基金
国家自然科学基金(31301572
31471639)
重庆市项目博士后资助(Xm2014041)
国家科技支撑计划课题(2015BAD16B08)
关键词
鲢鱼
腐败菌
产量因子
腐败能力
Silver carp
specific spoilage organisms
yield factor
spoilage ability
