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J Food Sci

Title:		"Sensory and physicochemical characterization of juices made with pomegranate and blueberries, blackberries, or raspberries"
Author(s):		Vazquez-Araujo L; Chambers Et; Adhikari K; Carbonell-Barrachina AA;
Address:		"The Sensory Analysis Center, Dept. of Human Nutrition, Kansas State Univ., Manhattan, KS 66506-1407, USA. lvazquez@umh.es"
Journal Title:		J Food Sci
Year:		2010
Volume:		75
Issue:		7
Page Number:		S398 - S404
DOI:		10.1111/j.1750-3841.2010.01779.x
ISSN/ISBN:		1750-3841 (Electronic) 0022-1147 (Linking)
Abstract:		"The quality parameters of 1 commercial pomegranate juice mixed with 5 different concentrations of blueberry, blackberry, or raspberry juices were studied. The pH, total soluble solids content, titratable acidity, and total phenolic content were determined. To understand the aroma differences of the juices, solid phase microextraction-gas chromatography-mass spectrometry was used to determine the volatile compounds present in the mixtures. A consumer study also was carried out to relate consumer ratings to the instrumental data and to determine acceptance and possible modifications of the designed juices. Four juices received the highest scores in overall consumer liking: pomegranate/blueberry juice with 20% and 50% of blueberry, pomegranate/blackberry with 10% of blackberry, and pomegranate/raspberry with 10% of raspberry. The main characteristics in these juices were: a high maturity index (from 13.9 to 16.5), low acidity (0.79 to 1.09 g citric acid 100 per milliliter juice), and the presence of aromatic compounds typical in blueberries such as 6-methyl-5-hepten-2-one, alpha-terpineol, and E-nerol. The total phenolic content was significantly higher in the pomegranate/blackberry 90%/10% sample, raising around 3500 mg gallic acid equivalents per liter, and could be a positive determinant for consumers interested in purchasing healthful products. PRACTICAL APPLICATION: The data presented in this article will help the juice industry, in the United States and elsewhere, to understand the consumer's preferences for pomegranate blended juices. Pomegranate juices have high antioxidant content, which makes these juices more desirable for the health-conscious consumer of today"
Keywords:		Acyclic Monoterpenes Adolescent Adult Aged Beverages/*analysis Blueberry Plants/*chemistry Chemical Phenomena Cyclohexane Monoterpenes Cyclohexenes/analysis Female Food Preferences Fruit/*chemistry Humans Hydrogen-Ion Concentration Kansas Ketones/analysis;
Notes:		"MedlineVazquez-Araujo, Laura Chambers, Edgar 4th Adhikari, Koushik Carbonell-Barrachina, Angel A eng 2011/05/04 J Food Sci. 2010 Sep; 75(7):S398-404. doi: 10.1111/j.1750-3841.2010.01779.x"