摘要
为获得更好的低温贮藏性能,以罗非鱼片为试验材料,进行了基于其物理特性的无磷保水剂及其配方的研究。在保水性常规指标检测的基础上,结合低场核磁共振(LF-NMR)确定了柠檬酸钠、木糖、壳聚糖等经单因素分析出影响罗非鱼片冻藏品质的最佳保水质量浓度范围,并进一步采用L_9(3~4)正交实验进行复配优化。结果显示:对比复合磷酸盐保水剂,由0.5%柠檬酸钠、0.2%木糖和3.0%壳聚糖组成的复合无磷保水剂处理过的罗非鱼片浸泡增重率、蒸煮损失率、质构特性均显著优于复合磷酸盐处理组,其提升幅度范围在13.56%~44.09%;同时,经复合无磷保水剂处理的各样品解冻损失率基本无差异,保水性能良好,可弥补由复合磷酸盐不良反应引起的食品安全问题。本研究为无磷保水剂的开发提供了新思路,并有望在实际生产中推广应用。
In order to obtain a better low-temperature storage performance an experimental research on the non-phosphorus water-retention agent and its formula based on the physical properties of tilapia fillets was carried out by using tilapia filletsas as the test material. On the basis of the detection of the conventional index for water retention,the best scope of water retention concentration for tilapia fillets was determined by LF-NMR based on the influences of sodium citrate, xylose, chitosan and other single factors on the freezing storage quality of tilapia fillets,and L9（34） orthogonal experiment for compounding and optimizing was carried out. The results showed that comparing with the tilapia fillets treated by compound phosphate water-retention agent,the tilapia fillets treated by compound non-phosphorous water-retention agent composed with 0. 5% sodium citrate,0. 2% xylose and 3. 0% chitosan are higher on soaking weight gain rate,cooking loss rate and texture characteristics by 13. 56% to 44. 09%. In addition, for the experiment sample treated by compound non-phosphorous water-retention agent, the loss rate after being thawed is not obvious; the water retention properties is overall good; and can offset the food safety problems caused by the adverse reactions to composite phosphate. This study provides new ideas for the development of non-phosphorous water-retention agents which are expected to be widely used in practical production.
作者
关志强
马超锋
李敏
任婷婷
GUAN Zhiqiang;MA Chaofeng;LI Min;REN Tingting(College of Mechanical and Power Engineering,Guangdong ocean University,Zhanjiang 524088,Guangdong,Chin)
出处
《渔业现代化》
2018年第2期64-72,共9页
Fishery Modernization
基金
广东省科技计划项目(2014A020208115)
广东省海洋渔业科技与产业发展专项(A201508C10)
关键词
低场核磁共振
无磷保水剂
水分分布
持水率
浸泡增重率
罗非鱼片
Low Field -Nuclear Magnetic Resonance（ LF -NMR）
non-phosphorous water-retention agent
water distribution
water holding rate
soaking weight gain rate
tilapia fillets
