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VIEW ARTICLE DOI: 10.1094/ASBCJ-56-0047
A Simple Method for the Determination of Hydrogen Sulfide Concentration in Beer (1). O. Nagata (2), Z. Okazaki, and H. Kawamura, Process Engineering Research and Development Laboratory, Asahi Breweries, Ltd., 1-2 1, Midori 1-Chome, Moriya-machi, Kitasoma-gun, Ibaraki, 302-0106 Japan; +81-297-46-1523; Fax +81-297-46-1524. (1) Presented at the 63rd ASBC Annual Meeting, Palm Springs, CA, June 1997. (2) Corresponding author. E-mail address: <osamu.nagata@asahibeer.co.jp> J. Am. Soc. Brew. Chem. 56(2):47-51, 1998. Accepted April 2, 1998.
We have
evaluated a
hydrogen sulfide
(H(2)S) analyzer
equipped with
a gas-permeable
tube as a possible
method for the
rapid determination
of H(2)S in
beer (HSA method).
The H(2)S analyzer
responded strongly
to H(2)S and
very weakly
to other volatile
compounds in
beer, indicating
that the selective
determination
of H(2)S is
possible. Repeatability
studies showed
that the coefficient
of variation
for the HSA
method was 0-8%.
Recovery studies
showed that
H(2)S recovery
using the HSA
method was approximately
100%. These
results indicated
that the H(2)S
concentration
can be determined
with a high
degree of accuracy
using the HSA
method. Furthermore,
the HSA method
is very simple
and only requires
5 min/sample
for the analysis.
Keywords: Beer
analysis, Gas-permeable,
Sulfur compounds,
Volatile.
Hemos evaluado
el analizador
de sulfuro de
hidrogeno (H(2)S)
equipado con
un tubo gas-permeable
como un posible
método
para la determinación
de H(2)S en
cerveza (método
HSA). El analizador
de H(2)S reacciona
fuertemente
con H(2)S en
cerveza y muy
debilmente con
otros compuestos
relacionados
con el sabor,
indicando que
la determinación
selectiva de
H(2)S es posible.
Repetidos estudios
mostraron que
los coeficientes
de variación
fueron satisfactorios
y comparables
con aquellos
obtenidos usando
el método
colorimétrico,
al cual nos
referimos como
método
azul de metileno
(método
MB). Estudios
de recuperación
mostraron que
la recuperación
de H(2)S fue
también
satisfactoria
y fueron comparables
a aquellos obtenidos
usando el método
MB. Esos resultados
indican que
la concentración
de H(2)S puede
ser determinada
por el método
HSA con un alto
grado de precisión.
Además
el método
HSA es mas práctico
que el método
MB y reduce
el tiempo requerido
para análisis.
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