Instituto de Hortofruticultura Subtropical y Mediterránea "La Mayora", Universidad de Málaga-Consejo Superior de Investigaciones Científicas, Departamento de Biología Molecular y Bioquímica, Campus de Teatinos, 29071 Málaga, Spain.
Max-Planck-Institut für Molekulare Pflanzenphysiologie, 14476 Potsdam-Golm, Germany.
Food Chem. 2020 Aug 15;321:126747. doi: 10.1016/j.foodchem.2020.126747. Epub 2020 Apr 3.
The strawberry fruit is perishable due to its high water content and soft texture, yet exhibits pleasant organoleptic and nutritional profile. Here we conducted a metabolomics-driven analysis followed by linear modelling to dissect the molecular processes in strawberry postharvest. Fruits from five cultivars were harvested and refrigerated during a ten-day period under three different atmospheres: ambient, CO-enriched and O-enriched. These analyses revealed that metabolites involved in, (i) organoleptic and nutritional properties; (ii) stress tolerance displayed duration and postharvest treatment-dependent levels. Ozone-enriched atmosphere appears to counteract postharvest negative effects, with fruits exhibiting lower levels of fermentative metabolites when compared to fruits kept in an ambient atmosphere. Furthermore, metabolic reconfiguration towards the synthesis of protective metabolites of those fruits can possibly confer enhanced tolerance to postharvest abiotic stresses. Finally, results from the linear modelling identified metabolites which could be used as biomarkers to assess strawberry quality during its postharvest shelf life.
草莓果实由于水分含量高和质地柔软，容易腐烂，但具有宜人的感官和营养特性。在这里，我们进行了代谢组学驱动的分析，然后进行线性建模，以剖析草莓采后过程中的分子过程。从五个品种中采摘果实，并在三种不同的环境下冷藏：环境、富 CO2 和富 O2。这些分析表明，与感官和营养特性相关的代谢物；（ii）对压力的耐受性表现出与持续时间和采后处理有关的水平。富氧气氛似乎可以抵消采后对果实的负面影响，与在环境气氛中保存的果实相比，富氧气氛下果实中的发酵代谢物水平较低。此外，这些果实向保护性代谢物合成的代谢重排可能赋予其对采后非生物胁迫的更高耐受性。最后，线性建模的结果确定了一些代谢物，可以用作标志物来评估草莓在采后货架期的质量。
