期刊文献+

用低场核磁研究烫漂对甜玉米水分布和状态影响 被引量:41

Effects of blanching on water distribution and water status in sweet corn investigated by using MRI and NMR
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摘要 该文旨在用低场核磁(NMR)及其成像技术(MRI)研究甜玉米粒中的水分布和水状态,为探讨烫漂后甜玉米失重和热特性参数变化的原因提供理论依据。试验通过T2加权成像技术,观察到烫漂后的甜玉米粒出现新的水信号分布区;通过研究烫漂时间和温度对甜玉米粒横向弛豫信号的影响,发现弛豫时间为450~750ms和50~70ms的结合水的百分比例明显变化,并具有一定规律,这种变化是由于淀粉糊化造成的。研究表明,烫漂改变了甜玉米中水的分布和结合状态;低场核磁技术揭示了甜玉米水状态的变化规律,为食品加工过程中物性参数的研究提供了一种有效方法。 To investigate the reason for weight loss and the change of thermal property after blanching, low-field magnetic resonance imaging (LF-MRI) and nuclear magnetic resonance (NMR) were applied to determine the water distribution and water status of sweet corn, respectively. After blanching,T2 weighted imaging showed that a new part of water signal area appeared, and percentages of two distinctly which was due to starch gelatinization. All components with T21 (450-750 ms) and T23 (50-70 ms) changed these indicated that blanching changed the water distribution and water status in corn kernel. NMR shows the change of water status in sweet corn, and it can provide an effective method to study physicochemical properties during food processing.
出处 《农业工程学报》 EI CAS CSCD 北大核心 2009年第10期302-306,共5页 Transactions of the Chinese Society of Agricultural Engineering
基金 国家科技支撑计划项目"中央厨房系统技术集成与营养配餐产业化示范"(2008BAD91B02)
关键词 核磁共振 核磁成像 烫漂 失重 甜玉米 NMR(nuclear magnetic resonance) MRI(magnetic resonance imaging) water blanching weight loss sweet corn
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参考文献24

  • 1Bimi G B, Raj M A, Kumar A, et al. Changes in microbial load of black pepper (Piper nigrum L.) During processing[J]. Journal of Food Science and Technology, 2004, 41(1): 77 --79.
  • 2Chavarri M J, Herrera A, Arino A. The decrease in pesticides in fruit and vegetables during commercial processing[J]. International Journal of Food Science & Technology, 2005, 40(2): 205--211.
  • 3Mosha T C, Gaga H E. Nutritive value and effect of blanching on the trypsin and chymotrypsin inhibitor activities of selected leafy vegetables[J]. Plant Foods for Human Nutrition, 1999, 54(3): 271--283.
  • 4Ni L, Lin D, Barrett D M. Pectin methylesterase catalyzed firming effects on low temperature blanched vegetables[J]. Journal ofFoodEngineering, 2005, 70(4): 546--556.
  • 5Sila D N, Smout C, Vu S T, et al. Influence of pretreatment conditions on the texture and cell wall components of carrots during thermal processing[J]. Journal of Food Science, 2005, 70(2): 85--91.
  • 6Galindo F G, Toledo R T, Sjoholm I. Tissue damage in heated carrot slices. Comparing mild hot water blanching and infrared heating[J]. Journal of Food Engineering, 2005, 67(4): 381--385.
  • 7Theerakljlkait C, Barrett D M, McDaniel M R. Sweet corn germ enzymes affect odor formation[J]. Journal of Food Science, 1995, 60(5): 1034--1040.
  • 8Kim M J, Oh J M, Cheon S H, et. al. Thermal inactivation kinetics and application of phospho- and galactolipid-degrading enzymes for evaluation of quality changes in frozen vegetables[J]. J Agric Food Chem, 2001, 49(5): 2241 --2248.
  • 9Morales-Blancas E F, Chandia V E, Cisneros-Zevallos L. Thermal inactivation kinetics of peroxidase and lipoxygenase from broccoli, green asparagus and carrots[J]. Journal of Food Science, 2002, 67(1): 146--154.
  • 10Aguero M V, Ansorena M R, Roura S I, et al. Thermal inactivation of peroxidase during blanching of butternut squash[J]. LWT-Food Science and Technology, 2008, 41(3): 401 --407.

二级参考文献17

  • 1何松,刘长虹,左锦静.和面过程中馒头面团微观结构研究[J].粮油加工与食品机械,2004(6):55-56. 被引量:8
  • 2刘邻渭,食品化学,2000年
  • 3韩雅珊,食品化学,1996年
  • 4恽魁宏,有机化学,1995年
  • 5周世英,粮食学与粮食化学,1988年
  • 6佘纲哲,粮食生物化学,1987年
  • 7金兹布尔格 A C,食品干燥原理与技术基础,1986年
  • 8H.Zheng,M.P.Morgenstern,O.H.Campanella,et al.Rheological Properties of Dough During Mechanical Dough Development[J] Journal of Cereal Science,2000,(32):293-306
  • 9M.Kuo,S.Gunasekaran.Nuclear Magnetic Resonance Study of Water Mobility in Pasta Filata and Non-pasta Filata Mozzarella[J] Journal of Dairy Sci,2001,84(9):1950-1958
  • 10J.M.Frias,L.Foucat,J.J.Bimbenet,et al.Modeling of moisture profiles in paddy rice during drying mapped with magnetic resonance imaging[J] Chemical Engineering Journal,2002,(86):173 -178

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