Detoxification of Anatoxin in Peanut Meal by Hydrogen Peroxide

Sreenivasamurthy, V.; Parpia, H. A. B.; Srikanta, S.; Murthy, Anuradha

doi:10.1093/jaoac/50.2.350

Cited by 26 publications

(14 citation statements)

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“…As in protein isolates from raw peanuts, the aflatoxin content in the alkaline dispersion was reduced significantly and increased to the original value after acidification. This may be due to opening of the lactone ring in the aflatoxin molecule under alkaline conditions (16) to give a salt of substituted o-Coumaric acid which is nonfluorescent (7) and to the inability of chloroform to extract the toxin under alkaline conditions (17). The fact that the lactone ring is reformed under acidic conditions suggests that the sodium derivative can be reconverted to the original lactone and, thus, can be potentially as toxin as the aflatoxins (18).…”

Section: Fate Of Aflatoxin In Protein Isolate Preparation From Peanutmentioning

confidence: 99%

Distribution of aflatoxins in various fractions separated from raw peanuts and defatted peanut meal

Natarajan

Rhee

Cater

et al. 1975

J Americ Oil Chem Soc

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The present investigation is the first definitive study of the distribution of aflatoxins in a wet-milling process of raw peanuts. The results show that the majority of the aflatoxins originally present in the peanuts remained in the solid fractions, particularly the protein fraction, during wet-milling. In the protein concentrate preparation, the concentrates carried 81-89% of the total toxin; crude oil, 5-8%; and whey fraction, 3-14%. In the case of protein isolate preparation, 51-56% of the total toxin remained with the isolates, 22-26% with the residue, 11-17% with the whey, and 7-8% with the crude oil. Distribution of aflatoxins in the preparation of protein isolates from defatted peanut meal showed that 55-65% of the total toxin originally present in the meal remained with the protein isolates, 20-28% with the residue, and 10-20% with the whey fraction. Changes in extraction pHs for the preparation of protein isolates either from raw peanuts or defatted meal did not alter the distribution pattern mentioned above. A new approach based upon charge-transfer (electron acceptor-donor) complex formation is suggested to shift this aflatoxin distribution from protein products to disposable whey or residue fraction during the processing of raw peanuts and defatted meal for protein products.

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Section: Fate Of Aflatoxin In Protein Isolate Preparation From Peanutmentioning

confidence: 99%

Distribution of aflatoxins in various fractions separated from raw peanuts and defatted peanut meal

Natarajan

Rhee

Cater

et al. 1975

J Americ Oil Chem Soc

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“…5). Sreenivasamurthy, et al, (19)and 9 Fischbaeh a'fi~l Campbell (20) have demonstrated, by biological tests, the destruction of afiatoxins by hydrogen peroxide and sodium hypochlorite, respectively.…”

Section: Simplicitymentioning

confidence: 99%

Aqueous extraction—An alternative oilseed milling process

Cater

Rhee

Hagenmaier

et al. 1974

J Americ Oil Chem Soc

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Oil can be removed from oilseed materials by a process which consists of an aqueous extraction of the comminuted seed, followed by a centrifugal separation which divides the aqueous extract into oil, solid, and aqueous phases. The protein may be recovered in the solids or aqueous phase, depending upon the conditions selected. Unit operations of this process are grinding, solid-liquid separation, centrifugation, demulsification, and drying of products. Aqueous extraction has been applied, to date, to coconuts and peanuts. For coconuts, a procedure has been developed to recover 93% of the oil and 91% of the protein. The major protein product is 25% protein and, when reconstituted in water, forms an acceptable beverage. The estimated production cost of this product is $.24/lb. For peanuts, the recovery of oil was 89% and protein 92% for the concentrate procedure, whereas the corresponding values for the isolate procedure were 86% and 89%, respectively. The costs of production were estimated as $.17/lb of concentrate (67% protein) and $.28/lb of isolate (89% protein). Aqueous extraction offers several advantages over conventional solvent extraction-less initial capital investments, safer operation, capability of discontinuous operation, and production of a variety of products. Another advantage of aqueous processing is the capability for utilization of certain chemicals to remove or inactivate undesirable sub-stanc_es. In the case of peanuts, hydrogen peroxide -and sodium tiypoehtorite have proven to-be effective for destruetioa of aflatoxins. Aqueous processing has the potential for application to a variety of other oilseeds.

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“…When these aflatoxin-contaminated foods were irradiated with gamma-rays, the ionization reactions occurred most frequently in water molecules with the production of free radicals and peroxide (Weiss 1964;Blahd 1971). These free radicals and peroxide may react with aflatoxin molecules to destroy them (Sreenivasamurthy et al 1967;Carter et al 1974). Gamma-irradiation is also widely used for food preservation, and the use of gamma-irradiation may be a n effective method of detoxifying aflatoxincontaminated foods and foods tuffs .…”

Section: Introductionmentioning

confidence: 99%

REMOVAL OF AFLATOXIN B₁ TOXICITY BUT NOT MUTAGENICITY BY 1 MEGARAD GAMMA RADIATION OF PEANUT MEAL

Temcharoen

Thilly

1982

Journal of Food Safety

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The toxic and mutagenic effects of gamma‐irradiated peanut meal contaminated with aflatoxin B1 were studied in Salmonella typhimu‐rium strain TM 677, using forward mutation to 8‐azaguanine resistance. After treatment with 5 to 10 M‐rad gamma radiation, the contaminated peanut meal lost its toxic and mutagenic properties. Irradiation at 0.1 to 1.0 M‐rad removed 75–100% of the toxicity but not mutagenicity.

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Detoxification of Anatoxin in Peanut Meal by Hydrogen Peroxide

Abstract: A new approach to destroy aflatoxin in toxic peanut meal has been described. It involves heat treatment of the meal at 80°C for ½ hour with hydrogen peroxide at a pH of 9.5. The destruction of aflatoxin is confirmed by biological tests, using ducklings and duck embryos.

Cited by 26 publications

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Distribution of aflatoxins in various fractions separated from raw peanuts and defatted peanut meal

Distribution of aflatoxins in various fractions separated from raw peanuts and defatted peanut meal

Aqueous extraction—An alternative oilseed milling process

REMOVAL OF AFLATOXIN B₁ TOXICITY BUT NOT MUTAGENICITY BY 1 MEGARAD GAMMA RADIATION OF PEANUT MEAL

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Detoxification of Anatoxin in Peanut Meal by Hydrogen Peroxide

Abstract: A new approach to destroy aflatoxin in toxic peanut meal has been described. It involves heat treatment of the meal at 80°C for ½ hour with hydrogen peroxide at a pH of 9.5. The destruction of aflatoxin is confirmed by biological tests, using ducklings and duck embryos.

Cited by 26 publications

References 0 publications

Distribution of aflatoxins in various fractions separated from raw peanuts and defatted peanut meal

Distribution of aflatoxins in various fractions separated from raw peanuts and defatted peanut meal

Aqueous extraction—An alternative oilseed milling process

REMOVAL OF AFLATOXIN B1 TOXICITY BUT NOT MUTAGENICITY BY 1 MEGARAD GAMMA RADIATION OF PEANUT MEAL

Contact Info

Product

Resources

About

REMOVAL OF AFLATOXIN B₁ TOXICITY BUT NOT MUTAGENICITY BY 1 MEGARAD GAMMA RADIATION OF PEANUT MEAL