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利用核磁共振技术研究鱼糜制品在储藏过程中的水分变化

作  者:
林晶晶;林向阳;吴佳;卞智英;叶楠慧
单  位:
福州大学生物科学与工程学院福建海壹食品饮料有限公司;福建海壹食品饮料有限公司;福州大学生物科学与工程学院
关键词:
核磁共振(NMR);自旋回波(CPMG)序列;弛豫时间;鱼糜制品;水分变化
摘  要:
利用核磁共振技术(NMR)监测鱼糜制品相应的自旋-自旋弛豫时间T2以及各组分水的含量变化。研究墨鱼丸、花枝丸两种鱼糜制品在-18℃(正常储藏温度)以及4℃/-18℃(扩大化模拟冷库温度变化)两种储藏条件下各种水分的分布和迁移情况。结果表明:这两种鱼糜制品具有4种流动性不同的水分,其对应的弛豫时间分别为T21、T22、T23、T24(0ms
译  名:
Water Content Change of Surimi Products Explored by NMR during Storage
作  者:
LIN Jing-jing1,LIN Xiang-yang1,,WU Jia1,BIAN Zhi-ying2,YE Nan-hui1,ZHU Rong-bi1(1.College of Biological Science and Technology,Fuzhou University,Fuzhou 350108,China; 2.Fujian Haiyi Beverage and Food Co.Ltd.,Fuqing 350301,China)
关键词:
nuclear magnetic resonance(NMR);Carr-Purcell-Meiboom-Gill(CPMG);relaxation time;surimi product;water change
摘  要:
The spin-spin relaxation time T2 and water content change in surimi products were measured by NMR in this study.The change of water spatial distribution and mobility in two kinds of surimi products at-18 ℃(normal storage temperature) and 4/-18 ℃(enlarged temperature change during storage) was explored.The results indicated that both kinds of surimi products had four kinds of water mobility,which were T21,T22,T23,and T24.T21 and T22 were bound water and exhibited little change during storage.T23 and T24 revealed higher mobility,which was the critical water change during storage.Water change of surimi products under the condition of 4/-18 ℃ was stronger than under the condition of-18 ℃ and even most closely bound water(corresponding to T21) showed a change.

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