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Ultrason Sonochem

Title:		Effect of ultrasound-assisted freezing on the physico-chemical properties and volatile compounds of red radish
Author(s):		Xu BG; Zhang M; Bhandari B; Cheng XF; Islam MN;
Address:		"State Key Laboratory of Food Science and Technology, Jiangnan University, 214122 Wuxi, Jiangsu, China. State Key Laboratory of Food Science and Technology, Jiangnan University, 214122 Wuxi, Jiangsu, China. Electronic address: min@jiangnan.edu.cn. School of Agriculture and Food Sciences, The University of Queensland, Brisbane, QLD 4072, Australia"
Journal Title:		Ultrason Sonochem
Year:		2015
Volume:		20150512
Issue:
Page Number:		316 - 324
DOI:		10.1016/j.ultsonch.2015.04.014
ISSN/ISBN:		1873-2828 (Electronic) 1350-4177 (Linking)
Abstract:		"Power ultrasound, which can enhance nucleation rate and crystal growth rate, can also affect the physico-chemical properties of immersion frozen products. In this study, the influence of slow freezing (SF), immersion freezing (IF) and ultrasound-assisted freezing (UAF) on physico-chemical properties and volatile compounds of red radish was investigated. Results showed that ultrasound application significantly improved the freezing rate; the freezing time of ultrasound application at 0.26 W/cm(2) was shorten by 14% and 90%, compared to IF and SF, respectively. UAF products showed significant (p<0.05) reduction in drip loss and phytonutrients (anthocyanins, vitamin C and phenolics) loss. Compared to SF products, IF and UAF products showed better textural preservation and higher calcium content. The radish tissues exhibited better cellular structures under ultrasonic power intensities of 0.17 and 0.26 W/cm(2) with less cell separation and disruption. Volatile compound data revealed that radish aromatic profile was also affected in the freezing process"
Keywords:		Anthocyanins/analysis Ascorbic Acid/analysis Calcium/analysis *Chemical Phenomena Food Handling/*methods *Freezing Nutritive Value Phenols/analysis Pigmentation Raphanus/*chemistry Time Factors *Ultrasonic Waves Volatile Organic Compounds/*chemistry Calci;
Notes:		"MedlineXu, Bao-Guo Zhang, Min Bhandari, Bhesh Cheng, Xin-Feng Islam, Md Nahidul eng Research Support, Non-U.S. Gov't Netherlands 2015/07/19 Ultrason Sonochem. 2015 Nov; 27:316-324. doi: 10.1016/j.ultsonch.2015.04.014. Epub 2015 May 12"