Publication Date:
2021-05-19
Description:
En el presente trabajo se estudiaron los cambios de los
componentes volátiles de un concentrado de sabor limón
para preparar bebidas de limón durante 6 meses de
conservación a 40 ºC. Se identificaron 44 compuestos
aislados mediante microextracción en fase sólida del espacio
de cabeza en combinación con la cromatografía de gases-
espectrometría de masas. El limoneno, γ-terpineno, acetato
de citronelilo, acetato de nerilo y acetato de geranilo,
disminuyeron su contenido significativamente, mientras que
el 1,4-cineol, 1,8-cineol, p-cimeno, p-cimeneno, p-menta-1,3-
dien-8-ol, α-terpineol, trans-α-bergamoteno, ar-curcumeno,
(E,E)-α-farneseno y β-bisaboleno la incrementaron. El neral
y geranial parecen disminuir su contenido, pero estos
cambios no explican todo el aumento en las concentraciones
de p-cimeno y p-cimeneno. El incremento de p-cimeno puede
ser explicado por la degradación del γ-terpineno, que está
presente en mayor proporción que el citral.
Description:
In this paper, the changes of major volatile compounds of a
lemon concentrate for preparing lemon-flavored drink were
studied. A total of 44 volatile compounds from a lemon
beverage were isolated by means of headspace-solid phase
microextraction and identified by gas chromatography-mass
spectrometry, many of them significantly changed by the
storage for 6 months at 40ºC. Limonene, γ-terpinene, citronellyl
acetate, neryl acetate and geranyl acetate were significantly
decreased by storage; while 1,4-cineole, 1,8-cineole, p-cymene,
p-cymenene, p-mentha-1,3-dien-8-ol, α-terpineol, trans-α-
bergamotene, ar-curcumene, (E,E)-α-farnesene and β-
bisabolene were increased. Neral and geranial seem to decrease
their concentrations, but their changes do not explain all the
increment of p-cymene and p-cymenene. The increase of p-
cymene could also be explained by the degradation of γ-
terpinene, which is present in greater amount than citral.
Description:
Published
Keywords:
Flavourings
;
Concentrates
;
Lemons
;
Spoilage
;
Citric acid
;
Volatile compounds
;
Stability
Repository Name:
AquaDocs
Type:
Journal Contribution
,
Refereed
,
Article
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