Zobrazeno 1 - 10
of 23
pro vyhledávání: '"B. J. Liska"'
Autor:
B. J. Liska
Publikováno v:
Journal of Milk and Food Technology. 23:117-121
A method for detecting antibiotic activity in milk using microscopic examination is presented. The Streptococcus thermophilus culture is exposed to the milk samples for 60–90 min. at 37°C. A methylene blue stain is prepared and examined for change
Publikováno v:
Journal of Milk and Food Technology. 27:264-267
Summary The effects of processing and storage of butter, ice cream, Swiss-type cheese, condensed milk, and dry whole milk powder from milk containing DDT, lindane, and DDT and lindane in combination were studied. The only change in structure occurred
Autor:
B. J. Liska, H.E. Calbert
Publikováno v:
Journal of Milk and Food Technology. 17:82-85
Tests indicate that the milk in farm bulk tanks can be tested for sediment by using a 1 quart mixed milk sample and concentrating the sediment on ¼ the area of a standard sediment disc or by using a 1 pint sample with the sediment concentrated on
Publikováno v:
Poultry Science. 45:321-324
INTRODUCTION THE use of DDT and other pesticides to control flies, insects, etc., in poultry houses is a common practice. In addition, DDT and other pesticides are recommended for use in feed grain production (U.S.D.A., 1965). Unless the most careful
Publikováno v:
Journal of Milk and Food Technology. 27:202-204
Summary The use of ECGC along with proper sample clean-up provides an accurate analytical method for the detection and measurement of trace amounts of chlorinated insecticide residues. Levels of 0.01 ppm of several insecticides may be determined, pro
Publikováno v:
Poultry Science. 44:435-437
INTRODUCTION VARIOUS research workers Naber and Ware (1961), Draper et al. (1950, 1952) Ivey et al. (1961) and Liska et al. (1964) have reported residues of chlorinated insecticides in tissues and eggs of chickens exposed to these insecticides. This
Autor:
B. J. Liska, H.E. Calbert
Publikováno v:
Journal of Milk and Food Technology. 21:252-254
Publikováno v:
Journal of the American Oil Chemists' Society. 43:A170-A172
Publikováno v:
Journal of Food Science. 30:35-37
SUMMARY The effect of fat, pH, and volatile acids on the perception of diacetyl was investigated. At the normal pH of skim milk or cream the threshold for diacetyl was 0.01 ppm. At pH 5.0 the threshold in skim milk was 0.2 ppm, and at pH 4.4 the diac
Publikováno v:
Poultry Science. 43:273-275
INTRODUCTION Numerous methods for the analysis of animal and poultry products for chlorinated insecticide residues have appeared in the literature. Most methods lack sensitivity, are specific for one insecticide, or require excessive time for analysi