Multi-frequency ultrasound:A potential method to improve the effects of surface decontamination and structural characteristics on large yellow croaker (Pseudosciaena crocea) during refrigerated storage

Xinyu Zhao; Weiqing Lan; Yuting Zhai; Jing Xie

Ultrasonics Sonochemistry (Nov 2021)

Multi-frequency ultrasound:A potential method to improve the effects of surface decontamination and structural characteristics on large yellow croaker (Pseudosciaena crocea) during refrigerated storage

Xinyu Zhao,
Weiqing Lan,
Yuting Zhai,
Jing Xie

Affiliations

Xinyu Zhao: College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China
Weiqing Lan: College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China; Shanghai Aquatic Products Processing and Storage Engineering Technology Research Center, Shanghai 201306, China; National Experimental Teaching Demonstration Center for Food Science and Engineering (Shanghai Ocean University), Shanghai 201306, China; Corresponding authors at: College of Food Science and Technology, Shanghai Ocean University, Shanghai, China.
Yuting Zhai: College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China
Jing Xie: College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China; Shanghai Aquatic Products Processing and Storage Engineering Technology Research Center, Shanghai 201306, China; National Experimental Teaching Demonstration Center for Food Science and Engineering (Shanghai Ocean University), Shanghai 201306, China; Corresponding authors at: College of Food Science and Technology, Shanghai Ocean University, Shanghai, China.

Journal volume & issue: Vol. 79
p. 105787

Abstract

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The effects of multi-frequency ultrasound on surface decontamination and structural characteristics of large yellow croaker (Pseudosciaena crocea) during refrigerated storage were evaluated. The results of total viable counts (TVCs) and psychrophilic bacteria counts (PBCs) demonstrated that multi-frequency ultrasound retarded the growth of microorganisms. The bacteriostatic effect was positively correlated with the increase of ultrasound frequencies. However, compared with triple-frequency ultrasound (TUS, 20/28/40 kHz) treatment, dual-frequency ultrasound (DUS, 20/28 kHz) treatment had higher water-holding capacity (WHC) and immobilized water content, better texture characteristics, lower pH and total volatile basic nitrogen (TVB-N). Through the results of myofibrillar fragmentation index (MFI), intrinsic fluorescence intensity (IFI) and atomic force microscope (AFM), multi-frequency ultrasound could effectively stabilize the myofibrillar protein structure of refrigerated large yellow croaker, which could maintain better texture characteristics. The effects of DUS were the most significant. Therefore, multi-frequency ultrasound treatment could inhibit the growth of microorganisms and improve the structural characteristics of large yellow croaker during refrigerated storage.

Published in Ultrasonics Sonochemistry

ISSN: 1350-4177 (Print); 1873-2828 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Science: Chemistry; Science: Physics: Acoustics. Sound
Website: https://www.journals.elsevier.com/ultrasonics-sonochemistry

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