TY - JOUR
T1 - Proteomic analysis of mashua (Tropaeolum tuberosum) tubers subjected to postharvest treatments
AU - Aguilar-Galvez, Ana
AU - PEDRESCHI PLASENCIA, ROMINA PAOLA
AU - Carpentier, Sebastien
AU - Chirinos, Rosana
AU - García-Ríos, Diego
AU - Campos, David
N1 - Publisher Copyright:
© 2019 Elsevier Ltd
Copyright:
Copyright 2019 Elsevier B.V., All rights reserved.
PY - 2020/2/1
Y1 - 2020/2/1
N2 - Mashua (Tropaeolum tuberosum) is an important food in certain areas of the Andean region, where it is popularly believed to possess medicinal properties. Several studies have previously shown the potential of this tuber as a source of bioactive compounds. Traditionally, the tuber is exposed to the sun before consumption, in order to reduce its bitterness. The present work aims to study, at the proteome level, the differential abundance of proteins in tubers subjected to different postharvest treatments: sun-exposure (SUN), shade (SHA), refrigeration (COLD) and shade combined with sun-exposure (SHA-SUN) compared to recently harvested tubers (INIT). Results showed that sun exposure for prolonged times (9 days) resulted in increased abundance of proteins classified as heat shock proteins, intracellular traffic, disease/defense and protein degradation. Our results reflect that the sun treatment activates defense systems and osmoprotection adjustment against water loss and reactive oxygen species.
AB - Mashua (Tropaeolum tuberosum) is an important food in certain areas of the Andean region, where it is popularly believed to possess medicinal properties. Several studies have previously shown the potential of this tuber as a source of bioactive compounds. Traditionally, the tuber is exposed to the sun before consumption, in order to reduce its bitterness. The present work aims to study, at the proteome level, the differential abundance of proteins in tubers subjected to different postharvest treatments: sun-exposure (SUN), shade (SHA), refrigeration (COLD) and shade combined with sun-exposure (SHA-SUN) compared to recently harvested tubers (INIT). Results showed that sun exposure for prolonged times (9 days) resulted in increased abundance of proteins classified as heat shock proteins, intracellular traffic, disease/defense and protein degradation. Our results reflect that the sun treatment activates defense systems and osmoprotection adjustment against water loss and reactive oxygen species.
KW - Abiotic stress
KW - Cold
KW - Postharvest
KW - Proteomics
KW - Shade
KW - Sun-exposure
KW - Tropaeolum tuberosum
UR - http://www.scopus.com/inward/record.url?scp=85072163454&partnerID=8YFLogxK
U2 - 10.1016/j.foodchem.2019.125485
DO - 10.1016/j.foodchem.2019.125485
M3 - Article
C2 - 31522126
AN - SCOPUS:85072163454
VL - 305
JO - Food Chemistry
JF - Food Chemistry
SN - 0308-8146
M1 - 125485
ER -