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Food Chem

Title:		Not-from-concentrate pilot plant 'Wonderful' cultivar pomegranate juice changes: Volatiles
Author(s):		Beaulieu JC; Obando-Ulloa JM;
Address:		"Food Processing & Sensory Quality, United States Department of Agriculture, Agricultural Research Service, Southern Regional Research Center, 1100 Robert E. Lee Blvd., New Orleans, LA 70124, USA. Electronic address: John.Beaulieu@ars.usda.gov. Technology Institute of Costa Rica (ITCR), San Carlos Headquarter, P.O. Box 223-21001, Alajuela, San Carlos, Ciudad Quesada, Costa Rica. Electronic address: jaobando@itcr.ac.cr"
Journal Title:		Food Chem
Year:		2017
Volume:		20170224
Issue:
Page Number:		553 - 564
DOI:		10.1016/j.foodchem.2017.02.114
ISSN/ISBN:		1873-7072 (Electronic) 0308-8146 (Linking)
Abstract:		"Pilot plant ultrafiltration was used to mimic the dominant U.S. commercial pomegranate juice extraction method (hydraulic pressing whole fruit), to deliver a not-from-concentrate (NFC) juice that was high-temperature short-time pasteurized and stored at 4 and 25 degrees C. Recovered were 46 compounds, of which 38 were routinely isolated and subjected to analysis of variance to assess these NFC juices. Herein, 18 of the 21 consensus pomegranate compounds were recovered. Ultrafiltration resulted in significant decreases for many compounds. Conversely, pasteurization resulted in compound increases. Highly significant decreases in 12 consensus compounds were observed during storage. Principal component analysis demonstrated clearly which compounds were tightly associated, and how storage samples behaved very similarly, independent of temperature. Based on these data and previous work we reported, this solid-phase microextraction (SPME) method delivered a robust 'Wonderful' volatile profile in NFC juices that is likely superior qualitatively and perhaps quantitatively to typical commercial offerings"
Keywords:		"Fruit/*chemistry Lythraceae/*chemistry Volatile Organic Compounds/*analysis (E)-3-hexenol 1, 4-Cineole 1-Hexanol 2-Methyl-3-buten-2-ol 4-Terpineo Aroma Flavor Gas chromatography Mass spectrometry Pasteurization Punica granatum Solid phase microextraction l;"
Notes:		"MedlineBeaulieu, John C Obando-Ulloa, Javier M eng England 2017/04/05 Food Chem. 2017 Aug 15; 229:553-564. doi: 10.1016/j.foodchem.2017.02.114. Epub 2017 Feb 24"