minerals, proteins, amino acids, lipids, vitamins, and 

 other constituents. 



Vol. 3, No. 4. Author index of publications and 

 addresses — 1965 Bureau of Commercial Fish- 

 eries Division of Economics and Branches of 

 Reports (Seattle) and technology. By Helen 

 E. Plastino and Mary S. Fukuyama. May 

 1967, pp. 47-58. 



(No abstract.) 



Vol. 4, No. 1. Relation of quality of canned yel- 

 lowfin tuna (Thunnus albacares) to length of 

 fish, time of holding on deck, frozen storage 

 aboard vessel, and biochemical variables. By 

 W. Duane Brown, Roland Finch, Tai-Wan 

 Kwon, H. S. Olcott, and M. B. Schaefer. De- 

 cember 1967, pp. 1-21, 19 tables. 

 .■\BSTR.'\CT 

 This paper is the second in a series reporting the 

 results of studies of factors that affect the quality 

 of canned tuna. The first study showed that species 

 is a predominantly important variable; this second 

 study was confined to a single species. 



The length of the fish, the period of time the fish 

 were held on the deck of the fishing vessel before 

 being stowed, and the biochemical changes in the fish 

 held in frozen storage aboard the vessel are exam- 

 ined, and the interrelated results are interpreted. 

 Used as analytical tools were biochemical, sensory, 

 and statistical analyses. 



The factors most important to the quality of 

 canned yellowfin tuna were (in order of decreasing 

 significance): (1) the length of the fish, (2) the 

 biochemical changes taking place in frozen storage, 

 and (.3) the period of time that the fish were held 

 on deck after being captured. 



Vol. 4, No. 1. Extending the shelf life of frozen 

 chub (Leucickthys hoyi) fillets through the 

 use of ascorbic acid dips. By R. A. Greig. 

 December 1967, pp. 23-27. 4 figs., 1 table. 

 ABSTRACT 

 Chub fillets, prior to being frozen, were dipped in 

 ascorbic acid solutions of three difl'erent concentra- 

 tions to ascertain the comparative effectiveness of 

 each solution in retarding the onset of rancidity in 

 the frozen, stored fillets. Treated and nontreated 

 fillets were examined periodically by sensory meth- 

 ods and by 2-thiobarbituric acid and peroxide-value 

 tests. Results showed that all three treatments with 

 ascorbic acid effectively extended the shelf life of 

 the frozen fillets. 



Vol. 4, No. 1. Control of salmonellae in fish meal. 

 By B. J. Carroll and B. Q. Ward. December 

 1967, pp. 29-36, 2 figs., 3 tables. 



ABSTRACT 



Environmental studies showed the presence of 

 Salmonellae in three fish-meal plants examined. 

 Data derived from thermal studies indicate factors 

 that should be taken into account when a meal re- 

 quires processing, owing to postprocessing contam- 

 ination with Salmonellae. 



Protein was not significantly damaged under the 

 time-temperature combinations studied. 



Vol. 4, No. 1. Irradiation of Pacific coast fish 

 and shellfish. 6 — pretreatment with sodium 

 tripolyphosphate. By J. Spinelli, G. Pelroy, 

 and D. Miyauchi. December 1967, pp. 37-44, 

 3 figs., 6 tables. 



ABSTRACT 

 The effects, during storage, of dipping fish fillets 

 and steaks into sodium tripolyphosphate-salt solu- 

 tion prior to irradiation were evaluated relative to 

 drip, sensory factors, and protein alteration and to 

 spoilage microflora. In general, the dipping treat- 

 ment proved beneficial. 



Vol. 4, No. 1. Extending the shelf life of frozen 

 white bass (Rocciis chrysops) through the use 

 of ascorbic acid dips. By R. A. Greig. Decem- 

 ber 1967, pp. 45-48, 1 fig.. 1 table. 



ABSTRACT 

 The effectiveness of ascorbic acid and ascorbic 

 acid plus citric acid in retarding the development 

 of rancidity in white bass fillets during frozen stor- 

 age was evaluated. Sensory and 2-thiobarbituric 

 acid tests run on both treated and untreated sam- 

 ples showed that ascorbic acid retarded the devel- 

 opment of rancidity in the frozen fillets. 



Vol. 4, No. 1. Relative catching efl^ciency of a 

 70-foot semiballoon shrimp trawl and a 94-foot 

 eastern fish trawl. B.v Walter T. Pereyra, 

 Hiromu Heyamoto, and Robert R. Simpson. 

 December 1967, pp. 49-71. 7 figs.. 10 tables. 

 ABSTRACT 

 The purpose of the experiment was to equate the 

 relative catching efficiencies of a 94-foot Eastern 

 fish trawl and a 70-foot semiballoon shrimp trawl. 

 With the limitations that were imposed on experi- 

 mental work by practical considerations, a simple, 

 precise equation relating the catch efficiencies of 

 the two trawls could not be developed. Nevertheless, 

 the work yielded results by which one can make a 

 more objective comparison of shallow- and deep- 

 water trawl data. 



Fishery Leaflet 



585. Fisheries loans for vessels 

 Anonymous. June 1967. 13 pp. 

 (No abstract.) 



and gear. 



