Fructo-oligosaccharides in table grapes and response to storage
Blanch Rojo, María | Sánchez-Ballesta, M. Teresa | Escribano, M. Isabel | Merodio, Carmen | Ministerio de Ciencia e Innovación (España) | Comunidad de Madrid | Consejo Superior de Investigaciones Científicas (España) | Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
Fructo-oligosaccharides (FOS) have been recognized as health food ingredients with a protective effect against environmental stresses in plants. We have analyzed the profiles of individual FOS in Cardinal table grape pulp, until now undetected, and quantified their changes in response to low temperature and high CO2 levels. FOS separation and quantification was carried out using anion-exchange chromatography with pulsed amperometric detection (HPAEC-PAD), and the glucose, fructose and sucrose content of the grapes was also determined. Five FOS were identified and quantified: 1-kestose, neokestose, nystose, nystose b and kestopentaose. While in non-treated table grapes the endogenous FOS remained at steady state levels during storage at 0 °C, exposure to 20% CO2 for 3 days significant increases the levels of 1-kestose and kestopentaose, members of the inulin series. Considering the competitive advantage afforded by CO2-treated grapes, this transitory FOS accumulation could provide protection against damage caused by low temperature storage.
Показать больше [+] Меньше [-]The authors wish to thank the Spanish Ministry of Science and Innovation (Project AGL2008-02949/ALI) for financial support and the CSIC for the JAEDoc contract to M. Blanch.
Показать больше [+] Меньше [-]Peer reviewed
Показать больше [+] Меньше [-]Peer Reviewed
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