Hydrogen phosphide as a fumigant for foods, feeds and processed ...

146 W. H. btaratuctr, Gaao MAYa, KARL I-IILD, J. D. SULLtvAN, and J . MURPHY
Summary
Phostoxin0 Tablets and Pellets have gained worldwide acceptance as a
source of phosphine (PHa) for effective fumigation of cereal grains and
other agricultural commodities. The toxicity to all stages of insect life,
safety in use, and absence of residue make it ideally suited for this purpose.
Repeated fumigation, if required by reinfestation, does not cause a problem
with cumulative residue.
More recently, widespread interest in using Phostoxin for fumigation
of processed and packaged food and feed has resulted in the conduct of research
to provide data on possible residues and other aspects of this process .
Two methods have been used to determine residue levels, if any, in processed
foods. The first is a direct, practicable method for analyzing the fumigated
food per se. The second is an experimental "recovery" or indirect method,
whereby the phosphine generated is used to fumigate the food and is then
recovered . By' either or both of these methods, many samples representing
cereal grains and related products, fruits and nuts, beverage products, animal
foods, vegetables, spices, and miscellaneous food products have been fumigated
and subsequently analyzed . There has been no evidence of absorption
of phosphine by or adsorption onto any of the foods studied .
Analysis of vitamins A and B2 before and after fumigation with phosphene
has shown no evidence of any changes . These results, uniformly in.
dicating negligible residues of approximately 0 .01 p .p.m. or less, indicate
the suitability of Phostoxin as a fumigant fdr processed foods and feeds,
as well as for taw agricultural commodities .
R6sum6 *
Les tablettes et les comprimes de Phostoxin®x ont ..cquis une tres grande
faveur comme source d'hydrogene phosphors (PHa) pour une fumigation
efficace des grains de cereales et autres produits agricoles . La toxicit6
ii tous les sages de la vie de 1'insecte, Is s6curit6 de 1'emploi et l'absence
de r6sidu le rendent ideal pour cer usage. Une fumigation repetee, si elle
est exigee par une reinfestation ne souleve pas de probleme de residus
cumularifs.
Plus r6cemment, un int6ret accru daps 1'emploi du Phostoxin pour les
fumigations d'aliments prepares a result6 de recherches ex6cut6es afin de
r6unir des donn6es sur les residus 6ventuels et d'autres aspects de cette technique.
Deux m6thodes ont • 6t6 utilisees pour determiner les teneurs en
residus, s'il en existe, dans les aliments prepares. La premiere est une
m6thode directe et pratique pour doser 1'hydrogene phosphor6 dans les
aliments trait6s. La seconde est une m6thode indirecte dans laquelle est dose
l'hydrogene phosphor6 non absorb6 par les aliments . Par Tune ou 1'autre
de ces m6thodes oar 66 analyses, apr2s fumigation, de nombreux 6chantillons
de graines de cereales et de produits voisins, des fruits at des noix, de s
• Traduit par R. biesT S.
boissons, des
Il n'a ete of
aucun des al
L'analyse
gene phospi
paraitre des
que le Pho.,
prepares quq
Phostoxi
als Phosphi
anderen Ian
Entwickluni
das Fehlen
Mittel. Wif
wendig ist,
Ruckstandel
Neuerdi
bei der Bey
Mitteln zu
uber moglit
Bestimmun.
Nahrungsm
begasten N
gewinnung~
benutzt urn
viele Probt
Getranke, I
Nahrungsm
keinerlei H
untersuchte
Analyse
ergaben kei
Diese I
stands von
Eignung vi
and Futter
ALESSANDRI
phosphk
• Oberst
http://legacy.library.ucsf.edu/tid/mjq66a99/pdf