PREPARATION OF A DRY PRODUCT FROM CONDENSED 

 MENHADEN SOLUBLES; STATISTICAL ANALYSIS OF THE DATA 



( SUPPLEMENT TO THE U. S. FISH AND VflLDLIFE SERVICE RESEARCH REPORT 16 ) 



by C. F. Leei/ and R, J, Monroe=/ 

 INTRODUCTION 



In the course of an investigation of the practicability of preparing 

 a dry product from condensed fish solubles (50 percent solids), a number 

 of commercially produced samples of condensed menhaden solubles were col- 

 lected. The 20 plants producing these samples were located along the 

 Atlantic Coast from New Jersey to Florida and along the coast of the Gulf 

 of Mexico from West Florida to Texas o Most of the samples were drawn di- 

 rectly from storage tanks, although some were tsiken from the transfer pipes 

 as the product was being pumped from the evaporators. The sanqjles were 

 collected from various areas during October 1952 and from July to November 

 1953. 



Thirty-two samples of condensed solubles were used to prepare pure diy 

 solubles on a laboratory drum dryer. This process, the description of the 

 dry solubles produced, and the composition and physical properties of the 

 condensed solubles used as starting material for the dry solubles are de- 

 scribed in detail in the U, S, Fish and Wildlife Service Research Report U5, 

 Preparation of a Dry Product from Condensed Menhaden Solubles , 



The present paper is a supplement to Research Report 1^5 and consists 

 primarily of a statistical analysis and an interpretation of some of the 

 data presented in table 1, page 9 of that report. Information on the source 

 of saii?)les and on the 12 physical and chemical tests used to compare these 

 samples is contained on pages 13-16 of the Research Report, On page 12 of 

 the Report, the procedure used to derive a "Suitability Factor" for each 

 sample of dry solubles is described. This value is derived from various 

 chspracteristics observed during the drying operation and from certain prop- 

 erties of the dry product and is intended to give an objective comparison 

 of the various dry solubles. The Suitability Factor permits an estimation 

 of the suitability of the corresponding sample of condensed solubles to 

 make a satisfactory dry product. 



1/ Chemical Engineer, Fishery Technological Laboratory, U. S, Fish and 

 Wildlife Service, College Park, Maryland 



2/ Acting Head, Deparfauent of Experimental Statistics, North Carolina State 

 College, Raleigh, North Carolina 



