Wine Chemistry and Biochemistry

12 Automatic Analysers in Oenology 667 12.5.1 Material and Principle of the Method The apparatus consists of an interferometer u ...

668 M. Dubernet obtained is thus is two light beams of the same wavelengths with a phase inter- ference ofp. According to the ph ...

12 Automatic Analysers in Oenology 669 mathematical treatment. The methods used to extract this information form part of a relat ...

670 M. Dubernet samples possible, but he/she must apply the most appropriate chemometric methods and if possible, carry out crit ...

12 Automatic Analysers in Oenology 671 12.5.5.3 Matrix Effects It has been outlined above that matrix effects are due to other c ...

672 M. Dubernet Fig. 12.3Example of a wine mid-IR spectrum 12.5.6 Principal Steps in Spectral Analysis An example of a wine IR s ...

12 Automatic Analysers in Oenology 673 12.5.8 Usual IR Methods The number of parameters that may be determined by FRIR is consta ...

674 M. Dubernet Table 12.2Indirect methods of determination in oenology by near IR analysers Intra-laboratory Inter-laboratory M ...

12 Automatic Analysers in Oenology 675 compounds such as citric and gluconic acids and glycerol in correlated and mea- surable c ...

676 M. Dubernet Dubernet, M., Dubernet, M., Dubernet, V., Coulomb, S., Lerch, M., & Traineau, I. (2000b). Anal- yse objectiv ...

Chapter 13 Statistical Techniques for the Interpretation of Analytical Data Pedro J. Mart ́ın-Alvarez ́ Contents 13.1 Univariate ...

678 P.J. Mart ́ın-Alvarez ́ 13.1.1 Statistical Treatment for Only One Sample Let{x 1 ,x 2 ,x 3 ,...,xn}be a random sample ofnobs ...

13 Statistical Techniques for the Interpretation of Analytical Data 679 Table 13.1Results of the one-sample t test for 15 replic ...

680 P.J. Mart ́ın-Alvarez ́ 13.1.2 Statistical Treatment to Compare Two Independent Samples Let { x 1 , 1 ,x 2 , 1 ,x 3 , 1 ,... ...

13 Statistical Techniques for the Interpretation of Analytical Data 681 Table 13.2Mean and the standard deviation (SD) values fo ...

682 P.J. Mart ́ın-Alvarez ́ Table 13.3Mean and the standard deviation values of the histamine concentrations in 30 commer- cial ...

13 Statistical Techniques for the Interpretation of Analytical Data 683 TheFcalratio is also the result of a statistical method ...

684 P.J. Mart ́ın-Alvarez ́ Table 13.5Results of S-N-K test for means comparison: Homogenous Groups (α= 0 .05): Variety Mean 1 2 ...

13 Statistical Techniques for the Interpretation of Analytical Data 685 Accepting that previous values { x 1 , 1 ,x 2 , 1 ,...,x ...

686 P.J. Mart ́ın-Alvarez ́ Table 13.7Results of two-way ANOVA for 1-propanol content in wines resulting from the fer- mentation ...