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Food Chem

Title:		Floral aroma improvement of Muscat spirits by packed column distillation with variable internal reflux
Author(s):		Matias-Guiu P; Rodriguez-Bencomo JJ; Orriols I; Perez-Correa JR; Lopez F;
Address:		"Departament d'Enginyeria Quimica, Facultat d'Enologia, Universitat Rovira I Virgili, Av. Paisos Catalans 26, 43007 Tarragona, Spain. Departament d'Enginyeria Quimica, Facultat d'Enologia, Universitat Rovira I Virgili, Av. Paisos Catalans 26, 43007 Tarragona, Spain. Electronic address: jrbencomo@gmail.com. Estacion Enologica de Galicia, Ponte San Clodio - Leiro, 32427 Leiro, Spain. ASIS, Departamento de Ingenieria Quimica y Bioprocesos, Pontificia Universidad Catolica de Chile, Avenida Vicuna Mackenna 4860, Casilla 306, Santiago 22, Chile"
Journal Title:		Food Chem
Year:		2016
Volume:		20160620
Issue:
Page Number:		40 - 48
DOI:		10.1016/j.foodchem.2016.06.054
ISSN/ISBN:		1873-7072 (Electronic) 0308-8146 (Linking)
Abstract:		"The organoleptic quality of wine distillates depends on raw materials and the distillation process. Previous work has shown that rectification columns in batch distillation with fixed reflux rate are useful to obtain distillates or distillate fractions with enhanced organoleptic characteristics. This study explores variable reflux rate operating strategies to increase the levels of terpenic compounds in specific distillate fractions to emphasize its floral aroma. Based on chemical and sensory analyses, two distillate heart sub-fractions obtained with the best operating strategy found, were compared with a distillate obtained in a traditional alembic. Results have shown that a drastic reduction of the reflux rate at an early stage of the heart cut produced a distillate heart sub-fraction with a higher concentration of terpenic compounds and lower levels of negative aroma compounds. Therefore, this sub-fraction presented a much more noticeable floral aroma than the distillate obtained with a traditional alembic"
Keywords:		Alcoholic Beverages/*analysis Distillation/*methods Fructose/chemistry Glucose/chemistry Humans Hydrogen-Ion Concentration Kinetics Odorants/*analysis Terpenes/chemistry Vitis/metabolism Wine/*analysis Muscat Packed column Terpenic compounds Volatile comp;
Notes:		"MedlineMatias-Guiu, Pau Rodriguez-Bencomo, Juan Jose Orriols, Ignacio Perez-Correa, Jose Ricardo Lopez, Francisco eng England 2016/07/28 Food Chem. 2016 Dec 15; 213:40-48. doi: 10.1016/j.foodchem.2016.06.054. Epub 2016 Jun 20"