The chromatographic method validated for mycotoxins resulted
in a better proportion of the contents of the mobile phase, with a
separation factor of 2.3. In addition, the analytical parameters of the
method fulfilled the requirements of reliability, showing correlation
coefficients above 0.99, with LOQm values of 0.5 and 0.25 mg L1 for
AFLAB1 and AFLAM1, respectively. AFLAB1 was detected in 42% of the
pasteurized milk samples and 13% of the UHT milk samples, in levels
between 0.7 and 1.5 mg L1. AFLAM1 was present in 29% of the raw
milk samples, 58% of pasteurized, 67% of UHT and 67% of
concentrated, and all the samples that showed a natural contamina-
tion by both aflatoxins were above the legislated limit in Brazil
(0.5 mg L1). Only the powdered milk samples did not showa natural
incidence of both aflatoxins, considering the quantification limits of
the method. Acid milk coagulation promoted the accumulation of
contaminants in the clot
The chromatographic method validated for mycotoxins resulted
in a better proportion of the contents of the mobile phase, with a
separation factor of 2.3. In addition, the analytical parameters of the
method fulfilled the requirements of reliability, showing correlation
coefficients above 0.99, with LOQm values of 0.5 and 0.25 mg L1 for
AFLAB1 and AFLAM1, respectively. AFLAB1 was detected in 42% of the
pasteurized milk samples and 13% of the UHT milk samples, in levels
between 0.7 and 1.5 mg L1. AFLAM1 was present in 29% of the raw
milk samples, 58% of pasteurized, 67% of UHT and 67% of
concentrated, and all the samples that showed a natural contamina-
tion by both aflatoxins were above the legislated limit in Brazil
(0.5 mg L1). Only the powdered milk samples did not showa natural
incidence of both aflatoxins, considering the quantification limits of
the method. Acid milk coagulation promoted the accumulation of
contaminants in the clot
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