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Nonlinear Rheology of Food Materials- [electronic resource]
Nonlinear Rheology of Food Materials- [electronic resource]

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자료유형  
 학위논문
Control Number  
0016932802
International Standard Book Number  
9798379851668
Dewey Decimal Classification Number  
618
Main Entry-Personal Name  
Erturk, Merve Yildirim.
Publication, Distribution, etc. (Imprint  
[S.l.] : Purdue University., 2022
Publication, Distribution, etc. (Imprint  
Ann Arbor : ProQuest Dissertations & Theses, 2022
Physical Description  
1 online resource(240 p.)
General Note  
Source: Dissertations Abstracts International, Volume: 85-01, Section: B.
General Note  
Advisor: Kokini, Jozef.
Dissertation Note  
Thesis (Ph.D.)--Purdue University, 2022.
Restrictions on Access Note  
This item must not be sold to any third party vendors.
Summary, Etc.  
요약The inter/intramolecular interactions and associations between constituents determine the microstructure of food and its response to mechanical deformation and flow. The characterization of food rheology enables the design of efficient processing equipment, production of high-quality, stable end products, prediction of textural and sensorial attributes, and assurance of consumer acceptability. Foods are subjected to rapid and large deformations during processing operations and consumption. Dynamic oscillatory shear tests are carried out by subjecting food to a sinusoidal deformation (or stress) and probing the mechanical stress (or strain) and recording the response as a function of time. In the SAOS region, the mechanical response is in the form of a perfect sinusoidal curve and interpretation is straightforward as expected from a linear model. On the other hand, LAOS response requires complex mathematical relations to extract meaningful rheological parameters. In this dissertation, Fourier Transform-Chebyshev Decomposition (FTC) and Sequence of Physical Processes (SPP) methods were utilized to quantify the LAOS response of selected food materials. The objective of this study is to gain new insights into the nonlinear rheology and structural architecture of food materials. To offer insights into the microstructure- rheology relations, rheological measurements were accompanied by various techniques probing chemical interactions (FTIR), imaging (Cryo-SEM, SEM), quantitative network analysis, and molecular size (SDS-PAGE). This dissertation showed that LAOS rheology is highly correlated with the network structure of food shown by the quantitative network analysis utilizing SEM images. It is a powerful tool to detect the effect of small molecules on the nonlinear rheology of food (HMW-LMW glutenin ratio, gliadin for dough, fat content in yogurt, and amylopectin/amylose ratio of starch in a suspension). Nonlinear parameters were sensitive to structural changes occurring in dough structure during processing conditions including aging at room and elevated temperatures. Lastly, the SPP method enabling time-resolved interpretation of nonlinear rheology provided detailed transient microstructural interpretations whereas the FTC method gave static measures at specific strains in an oscillation cycle. Thus, nonlinear rheology of doughs with various gluten subfractions in MAOS and LAOS regions as well as shear thickening characteristic of starch suspensions with changing amylopectin/amylose ratio interpreted by the SPP method gave more sensitive results than the FTC method. The application of fundamental knowledge from this work can be a guide to evaluating the architecture and nonlinear rheology of food for the assurance of consumer acceptancy and the fabrication of efficient machinery by building more accurate mechanical models of complex food systems.
Subject Added Entry-Topical Term  
Shear tests.
Subject Added Entry-Topical Term  
Viscosity.
Subject Added Entry-Topical Term  
Food.
Subject Added Entry-Topical Term  
Yogurt.
Subject Added Entry-Topical Term  
Fourier transforms.
Subject Added Entry-Topical Term  
Rheology.
Subject Added Entry-Topical Term  
Wheat.
Subject Added Entry-Topical Term  
Decomposition.
Subject Added Entry-Topical Term  
Particle size.
Subject Added Entry-Topical Term  
Molecular weight.
Subject Added Entry-Topical Term  
Breakdowns.
Subject Added Entry-Topical Term  
Polynomials.
Subject Added Entry-Topical Term  
Polymer blends.
Subject Added Entry-Topical Term  
Deformation.
Subject Added Entry-Topical Term  
Viscoelasticity.
Subject Added Entry-Topical Term  
Gluten.
Subject Added Entry-Topical Term  
Flour.
Subject Added Entry-Topical Term  
Materials science.
Subject Added Entry-Topical Term  
Mathematics.
Subject Added Entry-Topical Term  
Mechanics.
Subject Added Entry-Topical Term  
Physics.
Added Entry-Corporate Name  
Purdue University.
Host Item Entry  
Dissertations Abstracts International. 85-01B.
Host Item Entry  
Dissertation Abstract International
Electronic Location and Access  
로그인을 한후 보실 수 있는 자료입니다.
Control Number  
joongbu:641916

MARC

 008240221s2022        ulk                      00        kor
■001000016932802
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■006m          o    d                
■007cr#unu||||||||
■020    ▼a9798379851668
■035    ▼a(MiAaPQ)AAI30506143
■035    ▼a(MiAaPQ)Purdue20352771
■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a618
■1001  ▼aErturk,  Merve  Yildirim.
■24510▼aNonlinear  Rheology  of  Food  Materials▼h[electronic  resource]
■260    ▼a[S.l.]▼bPurdue  University.  ▼c2022
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2022
■300    ▼a1  online  resource(240  p.)
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  85-01,  Section:  B.
■500    ▼aAdvisor:  Kokini,  Jozef.
■5021  ▼aThesis  (Ph.D.)--Purdue  University,  2022.
■506    ▼aThis  item  must  not  be  sold  to  any  third  party  vendors.
■520    ▼aThe  inter/intramolecular  interactions  and  associations  between  constituents  determine  the  microstructure  of  food  and  its  response  to  mechanical  deformation  and  flow.  The  characterization  of  food  rheology  enables  the  design  of  efficient  processing  equipment,  production  of  high-quality,  stable  end  products,  prediction  of  textural  and  sensorial  attributes,  and  assurance  of  consumer  acceptability.  Foods  are  subjected  to  rapid  and  large  deformations  during  processing  operations  and  consumption.  Dynamic  oscillatory  shear  tests  are  carried  out  by  subjecting  food  to  a  sinusoidal  deformation  (or  stress)  and  probing  the  mechanical  stress  (or  strain)  and  recording  the  response  as  a  function  of  time.  In  the  SAOS  region,  the  mechanical  response  is  in  the  form  of  a  perfect  sinusoidal  curve  and  interpretation  is  straightforward  as  expected  from  a  linear  model.  On  the  other  hand,  LAOS  response  requires  complex  mathematical  relations  to  extract  meaningful  rheological  parameters.  In  this  dissertation,  Fourier  Transform-Chebyshev  Decomposition  (FTC)  and  Sequence  of  Physical  Processes  (SPP)  methods  were  utilized  to  quantify  the  LAOS  response  of  selected  food  materials.  The  objective  of  this  study  is  to  gain  new  insights  into  the  nonlinear  rheology  and  structural  architecture  of  food  materials.  To  offer  insights  into  the  microstructure-  rheology  relations,  rheological  measurements  were  accompanied  by  various  techniques  probing  chemical  interactions  (FTIR),  imaging  (Cryo-SEM,  SEM),  quantitative  network  analysis,  and  molecular  size  (SDS-PAGE).  This  dissertation  showed  that  LAOS  rheology  is  highly  correlated  with  the  network  structure  of  food  shown  by  the  quantitative  network  analysis  utilizing  SEM  images.  It  is  a  powerful  tool  to  detect  the  effect  of  small  molecules  on  the  nonlinear  rheology  of  food  (HMW-LMW  glutenin  ratio,  gliadin  for  dough,  fat  content  in  yogurt,  and  amylopectin/amylose  ratio  of  starch  in  a  suspension).  Nonlinear  parameters  were  sensitive  to  structural  changes  occurring  in  dough  structure  during  processing  conditions  including  aging  at  room  and  elevated  temperatures.  Lastly,  the  SPP  method  enabling  time-resolved  interpretation  of  nonlinear  rheology  provided  detailed  transient  microstructural  interpretations  whereas  the  FTC  method  gave  static  measures  at  specific  strains  in  an  oscillation  cycle.  Thus,  nonlinear  rheology  of  doughs  with  various  gluten  subfractions  in  MAOS  and  LAOS  regions  as  well  as  shear  thickening  characteristic  of  starch  suspensions  with  changing  amylopectin/amylose  ratio  interpreted  by  the  SPP  method  gave  more  sensitive  results  than  the  FTC  method.  The  application  of  fundamental  knowledge  from  this  work  can  be  a  guide  to  evaluating  the  architecture  and  nonlinear  rheology  of  food  for  the  assurance  of  consumer  acceptancy  and  the  fabrication  of  efficient  machinery  by  building  more  accurate  mechanical  models  of  complex  food  systems.
■590    ▼aSchool  code:  0183.
■650  4▼aShear  tests.
■650  4▼aViscosity.
■650  4▼aFood.
■650  4▼aYogurt.
■650  4▼aFourier  transforms.
■650  4▼aRheology.
■650  4▼aWheat.
■650  4▼aDecomposition.
■650  4▼aParticle  size.
■650  4▼aMolecular  weight.
■650  4▼aBreakdowns.
■650  4▼aPolynomials.
■650  4▼aPolymer  blends.
■650  4▼aDeformation.
■650  4▼aViscoelasticity.
■650  4▼aGluten.
■650  4▼aFlour.
■650  4▼aMaterials  science.
■650  4▼aMathematics.
■650  4▼aMechanics.
■650  4▼aPhysics.
■690    ▼a0794
■690    ▼a0405
■690    ▼a0346
■690    ▼a0605
■71020▼aPurdue  University.
■7730  ▼tDissertations  Abstracts  International▼g85-01B.
■773    ▼tDissertation  Abstract  International
■790    ▼a0183
■791    ▼aPh.D.
■792    ▼a2022
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T16932802▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.
■980    ▼a202402▼f2024

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