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Taha A, Casanova F, Talaikis M, Stankevič V, Žurauskienė N, Šimonis P, Pakštas V, Jurkūnas M, Gomaa MAE, Stirkė A. Effects of Pulsed Electric Field on the Physicochemical and Structural Properties of Micellar Casein. Polymers (Basel) 2023; 15:3311. [PMID: 37571205 PMCID: PMC10422647 DOI: 10.3390/polym15153311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 07/28/2023] [Accepted: 08/03/2023] [Indexed: 08/13/2023] Open
Abstract
Pulsed electric field (PEF) as a green processing technology is drawing greater attention due to its eco-friendliness and potential to promote sustainable development goals. In this study, the effects of different electric field strengths (EFS, 0-30 kV/cm) on the structure and physicochemical features of casein micelles (CSMs) were investigated. It was found that the particle sizes of CSMs increased at low EFS (10 kV/cm) but decreased at high EFS (30 kV/cm). The absolute ζ-potential at 30 kV/cm increased from -26.6 (native CSMs) to -29.5 mV. Moreover, it was noticed that PEF treatment leads to changes in the surface hydrophobicity; it slightly increased at low EFS (10 kV/cm) but decreased at EFS > 10 kV/cm. PEF enhanced the protein solubility from 84.9 (native CSMs) to 87.1% (at 10 kV/cm). PEF at low EFS (10 kV/cm) intensified the emission fluorescence spectrum of CSMs, while higher EFS reduced the fluorescence intensity compared to native CSMs. Moreover, the analysis of the Amide Ι region showed that PEF-treated CSMs reduced the α-helix and increased the β-sheet content. Raman spectra confirmed that PEF treatment > 10 kV/cm buried tyrosine (Tyr) residues in a hydrophobic environment. It was also found that PEF treatment mainly induced changes in the disulfide linkages. In conclusion, PEF technology can be employed as an eco-friendly technology to change the structure and physiochemical properties of CSMs; this could improve their techno-functional properties.
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Affiliation(s)
- Ahmed Taha
- State Research Institute Center for Physical Sciences and Technology, Saulėtekio al. 3, LT-10257 Vilnius, Lithuania (A.S.)
| | - Federico Casanova
- Food Production Engineering, National Food Institute, Technical University of Denmark, 2800 Lyngby, Denmark;
| | - Martynas Talaikis
- State Research Institute Center for Physical Sciences and Technology, Saulėtekio al. 3, LT-10257 Vilnius, Lithuania (A.S.)
| | - Voitech Stankevič
- State Research Institute Center for Physical Sciences and Technology, Saulėtekio al. 3, LT-10257 Vilnius, Lithuania (A.S.)
| | - Nerija Žurauskienė
- State Research Institute Center for Physical Sciences and Technology, Saulėtekio al. 3, LT-10257 Vilnius, Lithuania (A.S.)
| | - Povilas Šimonis
- State Research Institute Center for Physical Sciences and Technology, Saulėtekio al. 3, LT-10257 Vilnius, Lithuania (A.S.)
| | - Vidas Pakštas
- State Research Institute Center for Physical Sciences and Technology, Saulėtekio al. 3, LT-10257 Vilnius, Lithuania (A.S.)
| | - Marijus Jurkūnas
- State Research Institute Center for Physical Sciences and Technology, Saulėtekio al. 3, LT-10257 Vilnius, Lithuania (A.S.)
| | - Mohamed A. E. Gomaa
- Department of Food Science, Faculty of Agriculture (Saba Basha), Alexandria University, Alexandria 21531, Egypt
| | - Arūnas Stirkė
- State Research Institute Center for Physical Sciences and Technology, Saulėtekio al. 3, LT-10257 Vilnius, Lithuania (A.S.)
- Micro and Nanodevices Laboratory, Institute of Solid State Physics, University of Latvia, Kengaraga Str. 8, LV-1063 Riga, Latvia
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Tirgarian B, Farmani J, Farahmandfar R, Milani JM, Van Bockstaele F. Switchable pH-responsive Biopolymeric Stabilizers Made by Sonothermal Glycation of Sodium Caseinate with κappa-carrageenan. FOOD BIOPHYS 2023. [DOI: 10.1007/s11483-023-09778-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
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Pandiselvam R, Aydar AY, Kutlu N, Aslam R, Sahni P, Mitharwal S, Gavahian M, Kumar M, Raposo A, Yoo S, Han H, Kothakota A. Individual and interactive effect of ultrasound pre-treatment on drying kinetics and biochemical qualities of food: A critical review. ULTRASONICS SONOCHEMISTRY 2023; 92:106261. [PMID: 36516722 PMCID: PMC9755246 DOI: 10.1016/j.ultsonch.2022.106261] [Citation(s) in RCA: 20] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Revised: 11/25/2022] [Accepted: 12/06/2022] [Indexed: 05/03/2023]
Abstract
One of the earliest and most prevalent processing methods to increase the shelf-life of foods is drying. In recent years, there has been an increased demand to improve product quality while lowering processing times, expenses, and energy usage in the drying process. Pre-treatments are therefore effectively used before drying to enhance heat and mass transfer, increase drying efficiency, and lessen degradation of final product quality. When food is dried, changes are expected in its taste, color, texture, and physical, chemical, and microbial properties. This has led to the need for research and development into the creation of new and effective pre-treatment technologies including high-pressure processing, pulsed electric field, ultraviolet irradiation, and ultrasound. Sound waves that have a frequency >20 kHz, which is above the upper limit of the audible frequency range, are referred to as "ultrasound". Ultrasonication (US) is a non-thermal technology, that has mechanical, cavitational, and sponge effects on food materials. Ultrasound pre-treatment enhances the drying characteristics by producing microchannels in the food tissue, facilitating internal moisture diffusion in the finished product, and lowering the barrier to water migration. The goal of ultrasound pre-treatment is to save processing time, conserve energy, and enhance the quality, safety, and shelf-life of food products. This study presents a comprehensive overview of the fundamentals of ultrasound, its mechanism, and how the individual effects of ultrasonic pre-treatment and the interactive effects of ultrasound-assisted technologies affect the drying kinetics, bioactive components, color, textural, and sensory qualities of food. The difficulties that can arise when using ultrasound technology as a drying pretreatment approach, such as inadequate management of heat, the employment of ultrasound at a limited frequency, and the generation of free radicals, have also been explained.
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Affiliation(s)
- R Pandiselvam
- Physiology, Biochemistry and Post-Harvest Technology Division, ICAR-Central Plantation Crops Research Institute (CPCRI), Kasaragod 671 124, Kerala, India.
| | - Alev Yüksel Aydar
- Department of Food Engineering, Manisa Celal Bayar University, 45140, Yunusemre, Manisa, Turkiye.
| | - Naciye Kutlu
- Department of Food Processing, Aydıntepe Vocational College, Bayburt University, 69500 Aydıntepe, Bayburt, Turkiye
| | - Raouf Aslam
- Department of Processing and Food Engineering, Punjab Agricultural University, Ludhiana, Punjab, India
| | - Prashant Sahni
- College of Dairy and Food Technology, Agriculture University, Jodhpur, 342304, Rajasthan, India
| | - Swati Mitharwal
- Department of Food Science and Technology, National Institute of Food Technology Entrepreneurship & Management (NIFTEM), Kundli 131028, India
| | - Mohsen Gavahian
- Department of Food Science, National Pingtung University of Science and Technology, Pingtung 91201, Taiwan
| | - Manoj Kumar
- Chemical and Biochemical Processing Division, ICAR-Central Institute for Research on Cotton Technology, Matunga, Mumbai 400019, India
| | - António Raposo
- CBIOS (Research Center for Biosciences and Health Technologies), Universidade Lusófona de Humanidades e Tecnologias, Campo Grande 376, 1749-024 Lisboa, Portugal
| | - Sunghoon Yoo
- Audit Team, Hanmoo Convention (Oakwood Premier), 49, Teheran-ro 87-gil, Gangnam-gu, Seoul 06164, South Korea.
| | - Heesup Han
- College of Hospitality and Tourism Management, Sejong University, 98 Gunja-Dong, Gwanjin-Gu, Seoul 143-747, South Korea.
| | - Anjineyulu Kothakota
- Agro-Processing & Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (NIIST), Trivandrum 695019, Kerala, India
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Effect of Different Temperature-Controlled Ultrasound on the Physical and Functional Properties of Micellar Casein Concentrate. Foods 2021; 10:foods10112673. [PMID: 34828953 PMCID: PMC8625585 DOI: 10.3390/foods10112673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 10/28/2021] [Accepted: 10/29/2021] [Indexed: 11/17/2022] Open
Abstract
Micellar casein concentrate (MCC) is a novel dairy ingredient with high protein content. However, its poor functional properties impair its potential for further application, highlighting the importance of using innovative processing methods to produce modified MCC, such as ultrasound (US). This work investigated the impact of US on the physical and functional properties of MCC under temperature-controlled and -uncontrolled conditions for different time intervals. Under temperature-controlled ultrasound (TC-US) treatment, a reduction was found in the supernatant particle size of casein micelles. Soluble calcium content and hydrophobicity increased following ultrasound treatment at 20 °C, resulting in a remarkable improvement in emulsification. However, long-time ultrasonication led to an unstable state, causing the MCC solutions to show shear thinning behavior (pseudoplastic fluid). Compared with 50 °C temperature-controlled ultrasonication, ultrasonication at 20 °C had a greater influence on particle size, viscosity and hydrophobicity. These findings indicate that 20 °C TC-US could be a promising technology for the modification of MCC.
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