Harvest maturity detection for ‘Nam Dokmai #4’ mango fruit (Mangifera indica L.) in consideration of long supply chains

Publikations-Art

Zeitschriftenbeitrag (peer-reviewed)

Autoren

Kienzle, S; Sruamsiri P; Carle, R; Sirisakulwat S; Spreer W; Neidhart S

Erscheinungsjahr

2012

Veröffentlicht in

Postharvest Biology and Technology

Verlag

Elsevier

Band/Volume

72/

DOI

10.1016/j.postharvbio.2012.04.011

Seite (von - bis)

64 - 75

Harvest maturity criteria were specified for ‘Nam Dokmai #4’ mango fruit. Focus was on harvest time
decisions for long supply chains with minimum risk of ripening during reefer transports despite acceptable
potential for subsequent postharvest ripening. For eleven fruit lots, harvested within 24 d (91–115
d after full bloom; DAFB), postharvest storage behavior at 14 ◦C (50–60% RH; ethylene absorption) was
explored, distinguishing harvest maturity stages and post-storage quality levels, respectively, by means
of principle component and cluster analysis. The impact of harvest maturity on post-storage quality was
described by a partial least squares regression model. Among nine independent variables, titratable acids
and the CIE hue angle of the mesocarp were the two most decisive attributes specifying harvest maturity
stages of ‘Nam Dokmai #4’ fruit, followed by the chlorophyll b content of the mesocarp and total soluble
solids. Discrimination between immature and mature fruit additionally involved dry matter (DM), being
constant as from 97 DAFB for mature fruit (18–19 g hg−1). Storage behavior of the ‘Nam Dokmai #4’ fruit
lots suggested early picking in the season (97 DAFB) after confirmation of harvest maturity by defined
levels of the crucial mesocarp attributes to minimize ripening during reefer transports. Completion of
harvest maturity specification based on mesocarp characteristics by concomitant consideration of DAFB
proved inevitable for proper application-oriented harvest time decisions.