INVESTIGADORES
NESCI Andrea Veronica
artículos
Título:
Impact of Food Grade antioxidants on peanut pods and seeds mycoflora in storage system from Córdoba, Argentina
Autor/es:
PASSONE MA; BLUMA R; NESCI A; RESNIK S; ETCHEVERRY M
Revista:
JOURNAL OF FOOD SAFETY
Editorial:
Wiley-Blackwell
Referencias:
Lugar: NJ (USA); Año: 2008 vol. 28 p. 550 - 566
ISSN:
0149-6085
Resumen:
A 5-month (2005) study was conducted in Argentina to determine the
effect of food-grade antioxidants (butylated hydroxyanisole [BHA], butylated
hydroxytoluene [BHT] and propyl paraben [PP]) alone and in mixtures on
fungal spoilage from stored peanuts. Five experimental containers were filled
with 200 kg of bulk peanuts. Four of them were treated with BHA (10 mM),
BHA-PP mixture (10 + 10 mM) and BHA-PP-BHT mixtures (10 + 5 + 10 mM)
and (10 + 10 + 10 mM). Fungal counts from peanuts treated with binary and
ternary mixtures were often significantly reduced. A total of 10,997 fungal
isolates were identified from the control pod and seed tissues in the six
samplings done compared to 5,164, 1,469, 1,217 and 1,228 fungi isolated from
silos 2, 3, 4 and 5, respectively. Ninety-eight percent of all fungi isolated were
Deuteromycetes and Ascomycetes. Fungal isolation was greater from pod
(91.9%) than from seed tissues. The most common fungi identified included
Penicillium, Aspergillus, Monascus, Eurotium and Fusarium spp. Isolation
frequencies of Penicillium spp. from both peanut tissues treated with antioxidant
mixtures were reduced about of 82.5%. Along the storage period, the
reduction percentages of Aspergillus spp. counts by antioxidant mixtures were
estimated in 74.5%. The fungal genus more sensitive to the antioxidants action
was Fusarium spp.