搜索结果: 1-7 共查到“食品科学技术基础学科 NMR”相关记录7条 . 查询时间(0.198 秒)
基于LF-NMR的香芋微波真空干燥中水分扩散特性研究
微波真空干燥 有效水分扩散系数 低场核磁共振 香芋
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2019/3/18
为了研究香芋片微波真空干燥过程中水分扩散特性，采用微波真空干燥箱在1.5、2.0和2.5 W/g 3个微波强度下对香芋片进行了干燥试验，利用低场核磁共振技术测定了香芋片微波真空干燥过程中水分迁移及分布情况。结果表明，香芋片微波真空干燥过程主要为降速阶段，3种微波强度下平均干燥速率为0.149、0.185和0.224 g/(g?min)；有效水分扩散系数为7.30×10-9、9.46×10-9、1....
Relationship between Proton NMR Relaxation Time and Viscosity of Saccharide Solutions
proton relaxation time saccharide 1H-NMR
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2009/7/8
Proton relaxation was measured in 1H-NMR for saccharide solutions. The proton relaxation curve for saccharide solutions was almost mono-exponential and spin-lattice (T1) and spin-spin relaxation (T2) ...
Pulse NMR Study of Refrigerated Cooked Rice and Comparison with Physicochemical Properties
cooked rice refrigeration water molecules
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2009/6/18
The behavior of water molecules in refrigerated cooked rice was examined by measuring spin-spin relaxation time T2 using a pulse NMR spectrometer. T2 decay curve was analyzed using two-component and n...
Texture Change of Beef and Salmon Meats Caused by Refrigeration and Use of Pulse NMR as an Index of Taste
refrigeration salmon squeezable drip
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2009/6/17
Food samples undergo various physical changes during long period refrigeration and their taste gradually diminishes. The amount of squeezable drip and salt-soluble protein in beef fillet and salmon me...
13C CP/MAS NMR spectra of pectins: a peak-fitting analysis in the C-6 region
13C CP/MAS NMR pectins peak fitting degrees of methylation (DM) degrees of acetylation (DAc)
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2014/3/19
13C CP/MAS NMR spectra of pectin samples were measured and interpreted. The influence of methylesterification and O-acetylation on chemical shifts of pectin carbons was studied using model pectate, pe...
13C CP/MAS NMR spectra of pectins: a peak-fitting analysis in the C-6 region
13C CP/MAS NMR pectins peak fitting degrees of methylation (DM) degrees of acetylation (DAc)
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2014/3/19
13C CP/MAS NMR spectra of pectin samples were measured and interpreted. The influence of methylesterification and O-acetylation on chemical shifts of pectin carbons was studied using model pectate, pe...
13C CP/MAS NMR spectra of pectins: a peak-fitting analysis in the C-6 region
13C CP/MAS NMR pectins peak fitting degrees of methylation (DM) degrees of acetylation (DAc)
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2014/3/19
13C CP/MAS NMR spectra of pectin samples were measured and interpreted. The influence of methylesterification and O-acetylation on chemical shifts of pectin carbons was studied using model pectate, pe...