By Nesli Sozer
Food items are advanced in nature which makes their research tough. assorted medical disciplines resembling biochemistry, microbiology, and meals, including engineering strategies are fascinated about their characterization. despite the fact that, imaging of nutrition fabrics and information research has received extra value because of strategies within the meals undefined, in addition to the emergence of foodstuff nanotechnology. photograph research protocols and strategies can be utilized in nutrients constitution research and procedure tracking. for this reason, nutrients constitution imaging is essential for varied sections of the foodstuff chain ranging from the uncooked fabric to the tip product. This booklet presents details on imaging strategies similar to electron microscopy, laser microscopy, x-ray tomography, raman and infrared imaging, including facts research protocols. It addresses the newest advances in imaging applied sciences and knowledge research of grains, liquid foodstuff structures (i.e. emulsions and gels), semi-solid and stable foams (i.e. bakery items, dough, increased snacks), protein motion pictures, end result and vegetable confectionery and nuts.
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Additional resources for Imaging Technologies and Data Processing for Food Engineers
D An enlargement of an area from c showing the surface of the bran colonized by lactic acid bacteria and yeasts. 16). 16a). These protein aggregates were likely derived exclusively from rice flour on the basis of the very low gluten content present after fermentation and enzymatic hydrolysis. 16c). 16d). 16e). 16b, f). Although starch 30 U. Holopainen-Mantila and M. Raulio Fig. 16 Micrographs of cross sections of pasta samples. a and b Experimental gluten-free pasta. c and d Commercial durum wheat pasta.
From these aspects follows an increasing importance in finding ways to characterize cereal structure quickly and accurately. This chapter shows how two spectroscopic imaging techniques, Fourier transform infrared (FTIR) microspectroscopy and confocal Raman microspectroscopy (CRM), can provide powerful tools for this purpose. The basic functioning and some practical issues of these experimental techniques will be illustrated in Sect. 2 and 3, respectively. An extensive overview of methods for chemometric analysis focusing on data preprocessing and spectral unmixing and resolution is provided in Sect.
The Raman images are obtained by moving the sample with a piezoelectric scan table in x and y directions. The lateral resolution of the technique is calculated according 2 Localization of Cereal Grain Components by Vibrational Microscopy … 47 Fig. 4 Confocal Raman setup and optical pathway in Raman mode. The laser is delivered by an optical fiber and focused onto the sample with an objective lens. 56 for oils) and θ is the half-angle of the maximum cone of light that can enter or exit the objective.