Biochemical traits of asparagus cultivars and quality changes in two differently coloured genotypes during cold storage

Sergio, L. and Gonnella, M. and Renna, M. and Linsalata, V. and Gatto, M.A. and Boari, F. and Di Venere, D. (2019) Biochemical traits of asparagus cultivars and quality changes in two differently coloured genotypes during cold storage. LWT, 101. pp. 427-434. ISSN 00236438

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Abstract

The aim was to evaluate morpho-biochemical traits in four asparagus cultivars (‘Early California’, ‘Grande’, ‘Purple Passion’, and ‘Vegalim’), and qualitative changes in ‘Grande’ and ‘Purple Passion’ during storage in air or passive modified atmosphere packaging (MAP, 15% O2 – 5% CO2), at 4 °C for 28 days. ‘Early California’ showed the highest total phenolic (TPh) and quercetin-3-rutinoside (rutin) content, and the highest total antioxidant activity (TAA). 'Purple Passion' was the richest in glucose and total sugars, while 'Early California' the least rich in sucrose. The nitrate content was lower than 100 mg kg−1 FM and potassium on average 280 mg 100 g−1 FM. The MAP reduced weight loss, ensuring product turgidity and mitigating the cold storage stress. In the first 7 days in storage, ‘Purple Passion’ showed higher values of TPh, rutin and TAA. Afterwards, TPh content increased in both cultivars in MAP. During storage, sugars gradually decreased, except sucrose in ‘Purple Passion’, increased by almost 40% after 14 days. ‘Grande’ and ‘Purple Passion’ spears showed optimal overall quality up to 14 days-storage, but they could not be stored for more than 21 days. Moreover, MAP allowed to preserve or enhance antioxidant properties of asparagus during the whole storage.

Item Type:	Article
Subjects:	500 Scienze naturali e Matematica
Depositing User:	Mr Pasquale Del Vecchio
Date Deposited:	27 Oct 2023 01:02
Last Modified:	27 Oct 2023 01:02
URI:	http://eprints.bice.rm.cnr.it/id/eprint/19466

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