KUDO ET AL.: TEXTURE QUALITY OF PACIFIC WHITING 



texture were purposely included in the present 

 study to determine the extent of the problem. On 

 randomly selected samples, shear press measure- 

 ments were run concurrently as an objective sup- 

 port for the sensory data. 



A scatterplot and the Spearman correlation co- 

 efficient (nonparametric) determined for the sen- 

 sory texture ratings and shear press values 

 shown in Figure 4 was produced by the SPSS soft- 

 ware. The high degree of correlation (r = 0.90 at 

 P = 0.001) was found to support the credibility of 

 sensory texture evaluation in this study. 



Effect of White and Black Pseudocysts 



and Kudoa Species Upon 



Sensory Texture 



Fitted regression curves for sensory texture 

 values and white pseudocyst counts are shown in 

 Figure 5A. Mixed infections include both K. pan- 

 iformis and K. thyrsitis pseudocysts in the same 

 fish. The curve representing the white mixed in- 

 fection shown superimposed on that of the white 

 K. paniformis curve suggests that most of the 

 white mixed pseudocysts consisted of K. pani- 



S 



E 

 N 

 S 

 

 R 

 Y 



T 

 E 

 X 



T 

 U 

 R 

 E 



B 



S 



E 

 N 

 S 

 

 R 

 Y 



■j 

 E 

 X 

 T 

 U 

 R 

 E 



19 e- 



7 5- 



5 8 



2 5 







WHITE PSEUDOCYSTS 



OPANIFORMIS 



X ^XTHYRSITIS 



A- A MIXED 



200 400 600 800 



KUDOA PSEUDOCYST COUNTS PER GRAM TISSUE 



10 0—1 



7 5 



5 



2 5 







BLACK PSEUDOCYSTS 



G- 



-OPANIFORMIS 



X XTHYRSITIS 



A- AMIXED 



"T 



T 



200 400 600 800 



KUDOA PSEUDOCYST COUNTS PER GRAM TISSUE 



Figure 5. — Fitted regression curves between cooked texture of Pacific whiting and 

 intensity of (A) white Kudoa pseudocysts and (B) black pseudocysts. 



749 



