Chemical and near-infrared determination of moisture, fat and protein in tuna fishes

Spectroscopic evaluation of the nutrient value of ground beef patties

“…Cooked samples exhibited a slightly narrower range of 106.3 mg/g for cholesterol, 36% for fat, 1449 cal/g for calories, and 29.3% for moisture content, primarily due to cooking loss. These ranges were significantly broader than those considered in previous studies (Lanza, 1983;Clark and Short, 1994;Togerson et al, 2003;Uddin et al, 2006;Khodabux et al, 2007;Ortiz-Somovilla et al, 2007). The observed variability in the samples was considered adequate to represent actual variability that is expected in raw and cooked beef patties available in the market.…”

“…The Soret peak and the absorption peaks observed at 530 and 555 nm indicate hemocromes resulting from the denaturation of Mb and metMb (Holownia et al, 2003). A relatively smaller peak observed at 965-985 nm is due to water in the samples, since the band 967 nm is an overtone combination band for O-H bonds (Khodabux et al, 2007;Ortiz-Somovilla et al, 2007).…”

“…Most of the NIRS studies on beef reported in the past were conducted on raw meat, and utilized PLSR modeling of NIR (1100-2500 nm) spectra of the meat product for predicting fat and proteins content (Khodabux et al, 2007;Uddin et al, 2006;Anderson and Walker, 2003;Togerson et al, 2003). The visible and near-infrared (VNIR) region representing 400-1100 nm is not studied extensively for its potential to estimate nutrient concentrations in ground beef.…”

Rapid and nondestructive evaluation of fish freshness by near infrared reflectance spectroscopy combined with chemometrics analysis

“…1 Although these methods can be performed without damage to the sh, they are subjective due to the individual opinions of humans and make quantitative analysis difficult. 11,12 With the rapid development of computer technology and stoichiometry, this technology has been applied to various disciplines, such as pharmaceutical analysis, 13 chemical engineering, 14 environmental science, 15 and agricultural products quality research. Some of them have been used as regulation methods and gold standards in the service of scientic research with reliability and accuracy.…”

Isolation and characterization of insoluble date (Phoenix dactylifera L.) fibers

“…the combustion method was used to determine crude protein content in the date fiber samples. This method is faster, very sensitive to low concentrations of nitrogen, less susceptible to interferences (thus yielding results as accurate as 0.3 g/100 g), and it requires only small amount of sample and was successfully used for fish protein analysis (González López et al, 2010;Khodabux, L'Omelette, Jhaumeer-Laulloo, Ramasami, & Rondeau, 2007). The crude protein content determined by the combustion method is in the range 11e18 g/100 g for fibers with standard deviation ranging from 0.02 g/100 g to 0.03 g/100 g. These results are higher compared to crude proteins estimated from the Kjeldahl method.…”