青鱼新鲜度智能标签的研究

Study on the Smart Tags of Freshness of Black Carp

作者以青鱼为研究对象,选用溴甲酚紫和溴百里香酚蓝指示剂,并以此制作出智能标签。首先研究了智能标签对青鱼的新鲜度的指示情况,其次研究不同样品质量对智能标签指示情况的影响,再次研究给指示新鲜度的智能标签加装保护膜之后,智能标签对青鱼新鲜度的指示的影响。结果表明,溴甲酚紫指示剂制备的智能标签能较好得指示青鱼的新鲜度;当青鱼的挥发性盐基氮值达20 mg/hg时,0.5%质量分数的溴甲酚紫制备的智能标签变为蓝色;溴甲酚紫智能标签对不同质量的青鱼均能较好识别其新鲜度;加装保护膜对标签的新鲜度指示影响不大。

Black carp was investigated as research object in this paper. Bromcresol purple and bromothymol blue were chosen as reagents which were selected to produce smart tags. First,how smart tags indicate the freshness of fresh water fish was studied,then the effects of different masses of fish on color changes of smart tags were determined. Additionally,the effect of preservative film on indicating freshness of smart tags was investigated. Results showed that smart tag of bromcresol purple can better indicate the freshness of packaged black carp;The color of smart tag of 0.5% bromcresol purple could turn to blue when the TVBN of black carp was 20 mg/hg;Smart tag of bromcresol purple can indicate of the freshness of packaged black carp with different masses;The effect of protection film on indicating of smart tag was not significant.