The aim of this work is to evaluate leaf senescence rate via chlorophyll a fluorescence measurements and with the JIP test. Lettuce (Lactuca sativa L.) and spinach (Spinacia oleracea L.) vegetables were stored at 4 or 8 C. The performance index (PI^sub ABS^) was the only index that immediately changed, even after one day of storage. The cumulative respiration was higher at higher storage temperature (8 C). At the end of storage, the cumulative respiration was 318 and 398 mg CO2/100 g FW for lettuce and spinach, respectively. The data from the induction curves were correlated with cumulated respiration. A multivariate regression model showed a satisfactory predictive ability with a R^sup 2^ in validation of 0.67 and a standard error in prediction (RMSEP) of 170 mg CO2/100 g FW corresponding to the CO2 emission of 3.5 days at 4 C and of 2.1 days at 8 C.
|Autori:||Baldassarre, V.;Cabassi, G.;Ferrante, A.|
|Data di pubblicazione:||2011|
|Titolo:||Use of chlorophyll a fluorescence for evaluating the quality of leafy vegetables|
|Rivista:||AUSTRALIAN JOURNAL OF CROP SCIENCE|
|Appare nelle tipologie:||1.1 Articolo in rivista|