In this study preprocessing of Raman spectra different biological samples has been studied, and their effect on the ability to extract robust quantitative information evaluated. Four data sets were chosen in order cover aspects spectra, constituted salmon oils, juice samples, meat, mixtures fat, protein, water. A range frequently used methods, as well combinations was Different regression results obtained from partial least squares (PLSR) indicators for comparing methods. The results,...

The possibility of using front-face fluorescence spectroscopy to characterize red wines was investigated, and a tentative identification their main fluorescent components attempted. Fifty-seven wine samples from different origins were included in the present study. Their excitation−emission matrices (EEMs) registered directly on 3-mL aliquots untreated samples. assayed excitation emission ranges 245−340 300−500 nm, respectively. set 57 EEMs analyzed by means parallel factor analysis...

Surface-Enhanced Raman Spectroscopy (SERS) is a powerful surface-sensitive technique to study the vibrational properties of analytes at very low levels concentration. In particular, detection bioactive molecules, specifically antioxidants, an area interest gain insights into reproducible and quantitative SERS-determination. this study, SERS measurements were systematically evaluated for ferulic acid, p-coumaric caffeic acid sinapic acid. The objective in research was to: 1) prepare...

The main objective of this work was to develop a method for rapid and non-destructive detection grading wooden breast (WB) syndrome in chicken fillets. Near-infrared (NIR) spectroscopy chosen as method, an industrial NIR scanner applied tested large scale on-line the syndrome. Two approaches were evaluated discrimination WB fillets: 1) Linear discriminant analysis based on spectra only, 2) regression model protein made estimated concentrations used discrimination. A sample set 197 fillets...

Non-destructive methods for assessing the chemical composition of fruit and berries are being developed use in e.g., sorting, storage management or as part decision making autonomous harvesting systems. In this study, Raman spectroscopy (RS) was used to estimate a selection components using partial least squares regression (PLSR) from early (June) late (September) Norwegian strawberry season. Satisfactory PLSR models were made total soluble solids (TSS), fructose, glucose, sum sugars (SS),...

A nondestructive method using online spectral imaging has been developed for quantitative measurements of moisture and fat distribution in six species fish fillets: Atlantic halibut (Hippoglossus hippoglossus), catfish (Icatalurus punctatus), cod (Gadus morhua), mackerel (Scomber japonicus), herring (Clupea harengus), saithe (Pollachius virens). image cube was acquired each fillet, a subsampling approach relating chemical features applied. Spectral data first analyzed by partial...

Raman spectroscopy was compared with near infrared (NIR) hyperspectral imaging for determination of fat composition (%EPA + DHA) in salmon fillets at short exposure times. Fillets were measured movement both methods. Salmon acquired from several different farming locations Norway feeding regimes, representing a realistic variation the market. For Raman, we investigated three manual scanning strategies; i) line scan loin, ii) belly and iii) sinusoidal times 2s 4s. NIR images while moved on...

ABSTRACT Near‐infrared transmittance spectroscopy was used to determine the average fat content in farmed Atlantic salmon fillets with skin and scales. The 5.7–17.6% weight range 1.0–5.4 kg. A partial least square regression including 43 resulted a multivariate prediction correlation of 0.97 root mean error cross validation 0.75%. Regression models using 6 9 wavelengths 850–1048 nm gave somewhat lower errors than model 100 wavelengths. Results showed that NIR suited nondestructively whole

Human health may be improved if dietary intakes of selenium and omega-3 fatty acids are increased. Consumption broiler meat is increasing, the content affected by composition feed. A two-way analyses variance was used to study effect feed containing rich plant oils enriched yeast on composition, antioxidation- sensory parameters. Four different wheat-based treatments supplemented with 5% rapeseed oil or 4% plus 1% linseed oil, either 0.50 mg 0.84 (organic form) per kg diet fed newly hatched...

ABSTRACT: A promising method for detection of parasites in whitefish fillets has been developed. By use imaging spectroscopy it is possible to record both spectral and spatial information from an object. In this work shown that by applying a white light transmission setup cod ( Gadus morhua ) fillets, make images containing differentiate between fish muscle parasites. The are analyzed discriminant partial least square regression as well image‐filtering techniques. identifies on the surface...

In the present study, possibility of employing spatially offset Raman spectroscopy (SORS) in qualitative and quantitative characterization quality parameters salmon through skin has been explored. A laboratory-based SORS setup comprising an 830 nm laser was employed, intact samples model made tissue constituents were used to investigate penetration signals dark light part skin. Intact with both measured at different spatial offsets. When using offsets range 5–6 mm, results clearly show that...

The muscle syndrome woody breast (WB) impairs quality of chicken fillets and is a challenge to the poultry meat industry. There need for online detection affected automatic sorting in process. Near-infrared spectroscopy (NIRS) promising method, this study we elucidate spectral properties WB versus normal fillets. On training set 50 (20 normal, 30 WB), measured NIR, nuclear magnetic resonance (NMR) T2 relaxation distributions, crude chemical composition. NIRS could estimate protein with an...

This paper describes a multi-spectral imaging near infrared (NIR) transflectance system developed for on-line determination of crude chemical composition highly heterogeneous foods and other bio-materials. The was evaluated moisture in 70 dried salted coalfish (bacalao), an extremely product. A spectral image cube obtained each fish different sub-sampling approaches extraction partial least squares calibration were evaluated. best prediction models correlation R 2 values around 0.92 root...

To be able to monitor the salting process of cold smoked salmon, a nondestructive imaging technique for salt analysis is required. This experiment showed that X-ray computed tomography (CT) can used distributional NaCl in salmon fillets during salting, equilibration, and smoking. The combination three voltages (80, 110, 130 kV) gave best CT calibrations NaCl, with prediction error (root mean square cross-validation, RMSECV) 0.40% correlation (R) 0.92 between predicted values reference...

An online NIR interactance imaging instrument was tested for fat distribution analysis in raw and salted salmon fillets. Approximately 3000 spectra were collected each fillet when passing under the on a conveyor belt (approximately 1s exposure). The calibrated using five cylindrical plugs (15 mm diameter) from fillet. content measured of these 1 H-NMR spectrometry plug region averaged used calibration validation. It found that is well-suited distributional intact local sampling strategy 15...