Listeria Methods Development Research at the Eastern Regional Research Center, U.S. Department of Agriculture

1988 ◽  
Vol 71 (3) ◽  
pp. 651-654
Author(s):  
Robert L Buchanan ◽  
James L Smith ◽  
Heidi G Stahl ◽  
Deborah L Archer
Keyword(s):  
Research Center ◽  
Blue Color ◽  
Regional Research ◽  
Department Of Agriculture ◽  
Eastern Regional Research ◽  
The Past ◽  
Methods Development ◽  
Reflected Light ◽  
Stressed Cells ◽  
Eastern Regional

Abstract Listeria methods research at the U.S. Department of Agriculture, Eastern Regional Research Center, has concentrated on 2 areas during the past year. The first was development of techniques for assessing isolation methods for their ability to detect sublethally stressed cells. It appears that a number of widely used media do not accurately detect Listeria that have been injured by thermal processing or acidification. The second was development of improved plating media. One, modified Vogel-Johnson agar, shows promise; it is highly selective and quantitative, and eliminates the need to select colonies on the basis of a blue color when illuminated with reflected light

Wiley Led the Way: A Century of Federal Honey Research

1987 ◽  
Vol 70 (2) ◽  
pp. 181-189
Author(s):  
Jonathan W White
Keyword(s):  
High Fructose Corn Syrup ◽  
Regional Research ◽  
International Meeting ◽  
Department Of Agriculture ◽  
Eastern Regional Research ◽  
Professional Career ◽  
Award Recipient ◽  
High Fructose ◽  
Eastern Regional ◽  
The U.S

Abstract Jonathan W. White, Jr, received the AOAC Harvey W. Wiley Award at the 100th AOAC Annual International Meeting and Exposition in Scottsdale, AZ, September 15, 1986. In 1942, after earning his Ph.D. at Purdue University, White became assistant chemist at the Eastern Regional Research Center (ERRC) of the U.S. Department of Agriculture at Wyndmoor, PA, where he spent almost his entire professional career. In 1948, he began the extensive research on honey for which he was selected as the 1986 Wiley Award recipient. He was named chief of the ERRC Plant Products Laboratory in 1965; 10 years later he requested reassignment to conduct research on the detection of adulteration of honey by high-fructose corn syrup. He retired from USDA in 1978 and until recently headed a honey testing service called Honeytech, Inc. White was elected a Fellow of AOAC in 1969 and was named Associate Referee of the Year in 1977

Taxonomy of the Genus Cecidomyia (Diptera: Cecidomyiidae) with Special Reference to the Species Occurring on Pinus banksiana Lamb

1960 ◽  
Vol 92 (1) ◽  
pp. 65-79 ◽  
Author(s):  
J. R. Vockeroth
Keyword(s):  
North America ◽  
Special Reference ◽  
Pinus Banksiana ◽  
Jack Pine ◽  
Regional Research ◽  
Department Of Agriculture ◽  
The Past ◽  
Canada Department ◽  
Forest Biology ◽  
Subjective Synonym

Several species of resin midges (or pine-pitch midges) have been recorded from species of Pinus in North America. These are all at present referred to the genus Retinodiplosis Kieffer 1912; for reasons given below this genus is here treated as a subjective synonym of Cecidomyia Meigen 1803. At least two species of Cecidomyia have been recorded from jack pine, Pinus banksiana Lamb., in Ontario, Manitoba, Saskatchewan and Michigan (Bradlev (1946), Barker and Wong (1948), anonymous (1946), Prentice and Hildahl (1957, 1958) and Mc-Daniel (1938)); they were sometimes determined as Retinodiplosis sp., sometimes tentatively or definitely as R. resinicola (O.S.). Study of specimens of Cecidomyia from P. banksiana collected during the past three years by officers of the Forest Biology Regional Research Laboratories, Canada Department of Agriculture, has shown that three species of the genus occur on this host. All three are described as new in this paper. C. resinicola (O.S.) 1871, originally described from Virginia pine, Pinus virginiana Mill., was not present in this material nor among Michigan specimens from P. banksiana in the U.S.N.M.; it almost certainly does not occur on P. banksiana.

Comparison of Three Methods for Determination of N-NitrosopyrroIidine in Fried Dry-Cured Bacon

1984 ◽  
Vol 67 (2) ◽  
pp. 236-239
Author(s):  
Robert A Gates ◽  
John W Pensabene ◽  
Fiddler Walter
Keyword(s):  
Meat Products ◽  
Screening Procedure ◽  
Energy Analyzer ◽  
Regional Research ◽  
Eastern Regional Research ◽  
Significant Difference ◽  
Cured Meat ◽  
Chromatographic Procedure ◽  
Eastern Regional

Abstract The recently developed Eastern Regional Research Center (ERRC) dry column chromatographic procedure for determining A'-nitrosopyrrolidine (NPYR) in fried cure-pumped bacon was evaluated for its applicability to fried dry-cured bacon. The method was then compared with 2 established procedures for volatile nitrosamine analysis in cured meat products: the multidetection thermal energy analyzer (MD) method and the mineral oil distillation (MOD) screening procedure. No significant difference (P < 0.05) in NPYR values was found between the ERRC and MD procedures, but significant differences were found between the ERRC and MOD procedures and between the MOD and MD procedures. No artifactual nitrosamine formation was found in the ERRC procedure, but significant amounts were found in samples analyzed by the MOD procedure. The ERRC method was demonstrated to be rugged and very rapid. It is proposed that the ERRC method replace the MOD method as the official screening procedure for NPYR in fried bacon.

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