|
Título:
|
Volatile emission after controlled atmosphere storage of Mondial Gala apples (Malus domestica): relationship to some involved enzyme activities
|
|
Autor/a:
|
Lara Ayala, Isabel; Echeverría Cortada, Gemma; Graell i Sarle, Jordi; López Fructuoso, Mª Luisa
|
|
Notas:
|
Mondial Gala apples were harvested at commercial maturity and stored at 1 °C under either air or
controlled atmosphere (CA) conditions (2 kPa O2/2 kPa CO2 and 1 kPa O2/1 kPa CO2), where they
remained for 3 or 6 months. Data on emission of selected volatile esters, alcohol precursors, and
activity of some aroma-related enzymes in both peel and pulp tissues were obtained during subsequent
shelf life of fruit and submitted to multivariate analysis procedures. CA storage caused a decrease in
the emission of volatile esters in comparison to storage in air. Results suggest that lessened ester
production was the consequence of modifications in activities of alcohol o-acyltransferase (AAT) and
lipoxygenase (LOX) activities. For short-term storage, inhibition of lipoxygenase activity in CA stored
fruit possibly led to a shortage of lipid-derived substrates, resulting in decreased production of volatile
esters in spite of substantial ester-forming capacity that allowed for some recovery of fruit capacity
for ester emission during the shelf life. For long-term storage, strong inhibition of AAT activity in CA
stored fruit in combination with low LOX activities resulted in unrecoverable diminution of biosynthesis
of volatile esters.
This work was funded through project RTA02-072, financed by the Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA). |
|
Materia(s):
|
-Lipoxygenase
-Malus domestica
-Alcohol o-acyltransferase
-Alcohol precursors
-Aroma
-Controlled atmosphere |
|
Derechos:
|
(c) American Chemical Society, 2007
info:eu-repo/semantics/restrictedAccess |
|
Tipo de documento:
|
article
publishedVersion |
|
Editor:
|
American Chemical Society
|
|
Compartir:
|
|
