Application of FT NIR Spectroscopy in the Determination of Basic Physical and Chemical Properties of Sausages

作者：Prochazkova Zuzana^*; Drackova Michaela; Salakova Alena; Gallas Leo; Pospiech Matej; Vorlova Lenka; Tremlova Bohuslava; Buchtova Hana

来源：Acta Veterinaria Brno, 2010, 79: S101-S106.

DOI：10.2754/avb201079S9S101

• FT-NIR
• spectroscopy
• calibration models
• sausages

The objectives of this study were to develop calibration models for determination of water activity and the content of fat, dry matter, salt, non collagen muscle protein and pH in dry cooked sausages. Samples (n = 42) were scanned in FT-NIR Analyzer and simultaneously analyzed by standard methods. The spectra were measured in the reflectance mode with a compressive cell between 10 000 and 4 000 cm(-1), averaging 100 scans. Calibration models were developed using the partial least squares (PLS) method. These calibration models were checked later by cross-validation. The following statistical values were obtained: R (correlation coefficient) = 0.997 and SEC (standard error of calibration) = 0.002 for water activity, R = 0.966 and SEC = 0.023 for pH, R = 0.995 and SEC = 0.970 for dry matter content, R = 0.995 and SEC = 0.045 for salt content, R = 0.965 and SEC = 0.652 for non collagen muscle protein, R = 0.996 and SEC = 0.559 for fat content. The results of the study showed that FT-NIR is a suitable method for rapid analysis of physical and chemical properties of sausages.

• 出版日期2010-8