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Postharvest Biol Technol

Title:		From laboratory to industrial storage - Translating volatile organic compounds into markers for assessing garlic storage quality
Author(s):		Ludlow RA; Evans G; Graz M; Marti G; Martinez PC; Rogers HJ; Muller CT;
Address:		"School of Biosciences, Cardiff University, Sir Martin Evans Building, Cardiff CF10 3AX, UK. Neem Biotech, Units G&H Roseheyworth Business Park, Abertillery NP13 1SX, UK. Coopaman S.C.L., Ctra de las Penas, km 1'6, 02006 Albacete, Spain"
Journal Title:		Postharvest Biol Technol
Year:		2022
Volume:		191
Issue:
Page Number:		111976 -
DOI:		10.1016/j.postharvbio.2022.111976
ISSN/ISBN:		0925-5214 (Print) 0925-5214 (Electronic) 0925-5214 (Linking)
Abstract:		"Garlic (Allium sativum L.) has long been grown for its culinary and health-promoting qualities. The seasonal nature of garlic cropping requires that bulbs be stored for many months after harvest to ensure a year-round supply. During this time, quality is known to deteriorate, and efforts have been made to improve the longevity of stored bulbs. Cold temperatures within the stores prolong shelf life, but fine temperature control is needed to avoid freezing damage or cold induced stress. Here, quality traits (alliinase activity, firmness, and water content) are measured in response to a 96 h - 5 degrees C cold stress, to simulate the effect of non-isothermic temperature control in a - 1.5 degrees C warehouse. Volatile organic compounds (VOCs) are measured by thermal desorption gas chromatography time of flight mass spectrometry to identify markers of non-isothermic storage in garlic. 129 compounds were putatively identified and four (L-lactic acid, 2,6-dimethylhetpadecane, 4-methyldodecane, and methylcyclopentane) showed high predictive accuracy for cold stress. VOCs were also sampled directly from a cold storage facility and the whole profile discriminated between sampling time points. Five VOCS were highly predictive for storage time in the warehouse but were different to VOCs previously shown to discriminate between storage times in a laboratory setting. This indicates the need for realistic warehouse experiments to test quality markers"
Keywords:		Alliinase Allium sativum Gc-ms Storage Voc;
Notes:		"PubMed-not-MEDLINELudlow, Richard A Evans, Gareth Graz, Michael Marti, Gracia Martinez, Puri Castillo Rogers, Hilary J Muller, Carsten T eng Netherlands 2022/09/06 Postharvest Biol Technol. 2022 Sep; 191:111976. doi: 10.1016/j.postharvbio.2022.111976"