Reduction of aflatoxin levels in cottonseed and peanut meals by ozonization

Abstract

Cottonseed and peanut meals were treated with ozone to destroy or eliminate aflatoxins. High meal moistures (cottonseed 22%, peanut 30%), high temperature (100C), and longer treatment times favored inactivation as measured by thinlayer chromatography. Aflatoxins B1 and G1 were readily destroyed by the ozone processes whereas aflatoxin Be appeared relatively resistant. In cottonseed meal, 91% of the total aflatoxins was destroyed in 2 hr, a decrease from 214 to 20 ppb ; in peanut meal, 78% was destroyed in 1 hr, a decrease from 82 to 18 ppb. In both meals, aflatoxin B1 was totally inactivated within the times specified.

Detoxification of aflatoxins by seed extracts of the medicinal plant, Trachyspermum ammi (L.) Sprague ex Turrill – Structural analysis and biological toxicity of degradation product of aflatoxin G1

“…Several strategies for the detoxification of aflatoxins by physical, chemical and biological means have been reported (Ciegler, Lillehoj, Peterson, & Hall, 1966;Cole & Kirksey, 1971;Harvey, Kubena, Phillips, Huff, & Corrier, 1989;Mann & Rehm, 1976). These include chemical detoxification by ammoniation (Coker, Jewers, & Jones, 1985;Frayssinet & Lafarge, 1990;Gardner, Koltun, Dollear, & Rayner, 1971), treatment with formaldehyde and calcium hydroxide (Codifer, Mann, & Dollear, 1976), ozonization (Dwarakanath, Rayner, Mann, & Dollear, 1968), exposure to chlorine gas (Fischbach & Campbell, 1965) and hydrogen peroxide (Sreenivasamurthy, Parpia, Srikanta, & Shankar Murti, 1967). Other effective methods include microbial detoxification by Flavobacterium aurantiacum (Ciegler et al, 1966;Hao & Brackett, 1988), Mucor sp.…”

Scientific information on mycotoxins and natural plant toxicants

“…acetic acid (Pons et al, 1981) ammonia gas or NH 4 OH (Brekke et al, 1977;Moerch et al, 1980) ammonium salts, 3-5% (Brekke et al, 1977) calcium hydroxide (Codifier et al, 1976) formaldehyde (Codifier et al, 1976;Mann et al, 1970) hydrogen peroxide (Spreenivasamurthy et al, 1967) methylamine (Park et al, 1983) ozone gas (Dwaratanath et al, 1968) phosphoric acid (Mann et al, 1970) phosphine gas -sodium bicarbonate (Mashaly et al, 1983) sodium bisulfite (Moerch et al, 1980) sodium bisulfite (Moerch et al, 1980;Mashaly et al, 1983) sodium hypochlorite (Yang, 1972) …”

Destruction and Detoxification of Aflatoxins with Ozone

“…It has been used in water treatment for disinfection and oxidative decomposition. Though Dwarakanath et al (1968) reported that ozone reduced aflatoxin in cottonseed meal and peanut meal, there are no reports on the reactivity of ozone with aflatoxins.…”