The quality of radiation-pasteurized halibut stored at 34°F
was evaluated subjectively and objectively over a period of 18 weeks.
Results of flavor evaluation and chemical analyses showed that the
storage life of halibut irradiated at 0.50, 0.75 and 1.00 megarad was
extended more than threefold. Although irradiated samples were
consistently...
The aflatoxins, carcinogenic and toxic mold metabolites
of Aspergillus flavus, were isolated and determined
in cottonseed meal and other feedstuffs. This new
quantitative method uses an acetone soxhlet extraction to
remove the toxins from the defatted meal. The residual
triglycerides, phospholipids and pigments were removed
from the acetone by filtration...
Dietary protein intake has been observed to influence the induction
of cancer in animals exposed to carcinogens, presumably by affecting the
activities of enzyme systems which metabolize them. One such carcinogen
is aflatoxin B₁ (AFB₁) a mold metabolite and frequent contaminant of
foodstuffs. Variations in the levels of dietary proteins...
Triplicate groups of rainbow trout (Salmo gairdneri) fed six
diets; five based on fish protein concentrate (FPC) ranging in caloric
density from 4.36 to 6.19 kcal/g, and one based on vitamin free
casein with a caloric density of 5.26 kcal/g were evaluated with
respect to diet ingredient utilization. The parameters...
Selected parameters that affect crude toxin production in both
primary culture (growing cell culture) and resting culture were
examined during efforts to produce sufficient crude toxin for purification.
The parameters included carbohydrate and label source and
concentration, cell concentration, incubation time and temperature
and shaker speed. A higher yield of...