Mycoflora and toxigenic Aspergillus flavus in Spanish milks.
The isolation, enumeration and identification of moulds were carried out on 64 samples of raw milk and 33 of pasteurized milk. The genera most frequently isolated in the raw milk were: Geotrichum (76.5%), Fusarium (45.3%), and Aspergillus (31.2%). In pasteurized milk they were: Aspergillus (61.5%) followed by Fusarium and Penicillium (37.7% in both cases). A. flavus was found in 12 samples and 1 out of the strains examined produced aflatoxins in vitro. The effect of pasteurization of the milk on spores of A. parasiticus NRRL-2999 was examined. The presence of moulds in pasteurized milk seems to be explained by contamination during bottling.
Jodral
M
M
Departamento de Bromatología y Tecnología de los Alimentos, Universidad de Córdoba, Facultad de Veterinaria, Spain.
Liñan
E
E
Acosta
I
I
Gallego
C
C
Rojas
F
F
Bentabol
A
A
D000348:Aflatoxins / Q000096:biosynthesis / Q000302:isolation & purification; D000818:Animals; D001230:Aspergillus / Q000254:growth & development / Q000302:isolation & purification / Q000502:physiology; D001231:Aspergillus flavus / Q000254:growth & development / Q000302:isolation & purification*; D002855:Chromatography, Thin Layer; D015169:Colony Count, Microbial; D005516:Food Microbiology; D005658:Fungi / Q000254:growth & development / Q000302:isolation & purification*; D005670:Fusarium / Q000254:growth & development / Q000302:isolation & purification; D005848:Geotrichum / Q000254:growth & development / Q000302:isolation & purification; D008892:Milk / Q000737:chemistry / Q000382:microbiology*; D010407:Penicillium / Q000254:growth & development / Q000302:isolation & purification; D013030:Spain; D013172:Spores, Fungal / Q000254:growth & development; D013242:Sterilization
D000348:Aflatoxins