title: Shrimp processing assessed by low field nuclear magnetic resonance, near infrared spectroscopy, and physicochemical measurements--the effect of polyphosphate content and length of prebrining on shrimp muscle.
abstract: The effect of using polyphosphates during prebrining and the effect of prebrining time of cold water shrimp (Pandalus borealis) was studied with low field nuclear magnetic resonance (LF-NMR) transverse relaxation time measurements (benchtop and unilateral) and near infrared (NIR) spectroscopy with the aim of improving shrimp processing. Strong calibrations were obtained for moisture content and water-holding capacity (WHC) using the NIR technique. Multivariate analysis indicated significant correlations between benchtop NMR parameters and moisture content and WHC, as measured with physicochemical methods and NIR spectroscopy. Significant correlations were also observed between NMR parameters and muscle pH, protein content, and phosphate content. The study showed that LF-NMR contribute to improved understanding of the shrimp brining process and to improved process control on-line or at-line, especially in combination with NIR measurements. However, optimization of the unilateral device is necessary.
authors.affiliation: Matis ohf. Icelandic Food and Biotech R&D, Value Chain and Processing, Vinlandsleid 12, IS-113 Reykjavík, Iceland. mariag@matis.is
authors.forename: María
authors.initials: M
authors.lastname: Gudjónsdóttir
authors.forename: Ásbjörn
authors.initials: Á
authors.lastname: Jónsson
authors.forename: Arnljótur Bjarki
authors.initials: AB
authors.lastname: Bergsson
authors.forename: Sigurjón
authors.initials: S
authors.lastname: Arason
authors.forename: Turid
authors.initials: T
authors.lastname: Rustad
mesh_terms: D000818:Animals; D055598:Chemical Phenomena; D005511:Food Handling / Q000379:methods*; D006863:Hydrogen-Ion Concentration; D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D015999:Multivariate Analysis; D009124:Muscle Proteins / Q000032:analysis; D009132:Muscles / Q000737:chemistry*; D033542:Pandalidae; D011122:Polyphosphates / Q000032:analysis*; D012492:Salts; D017747:Seafood / Q000032:analysis*; D019265:Spectroscopy, Near-Infrared / Q000379:methods*; D014867:Water / Q000737:chemistry
chemical_list: D009124:Muscle Proteins; D011122:Polyphosphates; D012492:Salts; C017082:brine; D014867:Water