http://www.cnr.it/ontology/cnr/individuo/prodotto/ID275579
Mycotoxin contamination in foodstuffs: decontamination of aflatoxin M1 in bovine milk by clay materials (Contributo in atti di convegno)
- Type
- Label
- Mycotoxin contamination in foodstuffs: decontamination of aflatoxin M1 in bovine milk by clay materials (Contributo in atti di convegno) (literal)
- Anno
- 2013-01-01T00:00:00+01:00 (literal)
- Alternative label
Carraro A.(1), De Giacomo A.(2), Giannossi M.L.(3), Medici L.(3), Muscarella M.(4), Palazzo L.(2), Quaranta V.(2), Summa V.(3), Tateo F.(1) (2013)
Mycotoxin contamination in foodstuffs: decontamination of aflatoxin M1 in bovine milk by clay materials
in Geoitalia 2013 - IX Forum Italiano di Scienze della Terra, Pisa, 16-18 settembre 2013
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Carraro A.(1), De Giacomo A.(2), Giannossi M.L.(3), Medici L.(3), Muscarella M.(4), Palazzo L.(2), Quaranta V.(2), Summa V.(3), Tateo F.(1) (literal)
- Rivista
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- (1) Institute of Geosciences and Earth Resources, CNR, c/o Dept. of Geosciences, Univ. Padova
(2) Ist. Zooprofilattico Sperimentale della Puglia e della Basilicata, Foggia
(3) Inst. of Methodologies for Environmental Analysis, CNR, Tito Scalo (PZ) (literal)
- Titolo
- Mycotoxin contamination in foodstuffs: decontamination of aflatoxin M1 in bovine milk by clay materials (literal)
- Abstract
- Mycotoxines are widespread toxic substances produced by
moulds in human and animal foodstuffs. Some of them, such as
aflatoxin B1 (AFB1), are very toxic even in small amounts, but
the modern approach to the problem (and the link with public
health) started only in the 60s. The presence of aflatoxin M1
(AFM1), in milk and dairy products is also a problem of crucial
interest. AFM1 is resistant to thermal and chemical treatments,
so mineral sorbents are highly advisable. Clay minerals are
suitable, but only a few data are available, as most studies deal
with AFB1 (absent in milk). The capacity of clay materials to
remove or attenuate the contamination of AFM1 in bovine milk
was studied, also considering the effects of these clays on the
nutritional properties of milk (in terms of protein, fat and
lactose). In order to make the experiments transferable for
practical use, only clays available from the market were tested,
as well a very simple clay-milk interaction procedure was used.
Some bentonites and a kaolin were selected for the experimental
work. In particular, different bentonites were selected in order to
partially accomplish the wide crystal-chemical features of
smectite. Kaolin was less effective than bentonites, but was still
able to detoxify contaminated milk, even using a little amount of
kaolin (2.4% of the milk suspension). The detoxification role of
the bentonites used was variable, but still very efficient:
contaminated bovine milk (up to about 80 ng/L) was purified to
safe levels (50ng/L for adults and 25ng/L for lactants), with
moderate alteration of the nutritional properties of milk;
moreover, the bentonite residue in the purified milk was very low
(0.4%). The protein was more sensitive to clay adsorption
compared to fat and lactose, and the decrease of protein in the
treated milk increased with the clay-milk ratio. Among bentonites
(beidellite-montmorillonite, ferruginous and saponite types), a
saponite clay showed the highest sorbent capacity, in agreement
with theoretical consideration about its higher cell surface
(available for AFM1) and higher hydrophobicity. Isothermal
adsorption procedures for the two more effective bentonites were
also carried out in water. The collected data show an effective
and safe use of clays in the detoxification of milk (and dairy
products) contaminated by AFM1. The climatic changes observed
in the last decades point to a wider diffusion of mycotoxines and
health effects, and push toward the search for safe, cheap and
accessible food treatments. (literal)
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