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Demircan B, Velioglu YS, Giuffrè AM. Effects of washing with boric acid solutions on residual boric acid content, microbiological load, and quality of fresh-cut spinach. Heliyon 2024; 10:e31974. [PMID: 38845991 PMCID: PMC11152976 DOI: 10.1016/j.heliyon.2024.e31974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 04/18/2024] [Accepted: 05/24/2024] [Indexed: 06/09/2024] Open
Abstract
Insufficient disinfection of fresh-cut spinach poses significant health risks, along with potential issues like odor, color changes, and softening during short-term storage. To address these challenges, boric acid solutions were explored as an alternative to chlorine washes, which are known to produce toxic compounds. Among various concentrations, 1 % boric acid exhibited the most effective microbial inactivation, leading to substantial reductions in total mesophilic aerobic bacteria, total yeast and mold, and Enterobacteriaceae counts, with reductions of 1.64, 1.38, and 1.77 logs, respectively. Additionally, washing spinach leaves with this solution for 1 min maintained quality parameters, with enhanced antioxidant activity (55.26 mg kg-1 Trolox equivalent), increased total phenolic content (1214.06 mg kg-1 gallic acid equivalent), retention of chlorophyll a (839.16 mg kg-1), chlorophyll b (539.61 mg kg-1) and ascorbic acid content (264.72 mg kg-1). Mechanical properties such as puncture strength (1.81 N) and puncture distance (52.78 mm) also showed favorable outcomes, alongside optimal moisture content at 89.81 %. Notably, residual boric acid content was lowest in spinach leaves (1252.49 mg kg-1) and highest in the wash water (53.88 mg kg-1) after treatment. Scanning electron microscopy images demonstrated maintained tissue integrity, while Hunter Lab readings indicated minimal color changes post-washing. Additionally, sensory evaluations and various physicochemical analyses further supported the efficacy of boric acid washing. Consequently, washing spinach leaves with a 1 % boric acid solution for 1 min yielded favorable results across multiple quality parameters. These findings suggest the potential of boric acid as a safe and effective alternative disinfectant in the fresh-cut produce industry, highlighting its practical implications for food safety and quality. Future research should focus on exploring long-term effects and optimizing washing protocols for broader applications.
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Affiliation(s)
- Bahar Demircan
- Department of Food Engineering, Faculty of Engineering, Ankara University, Ankara, Türkiye
| | - Yakup Sedat Velioglu
- Department of Food Engineering, Faculty of Engineering, Ankara University, Ankara, Türkiye
| | - Angelo Maria Giuffrè
- Department of AGRARIA, Università degli Studi Mediterranea, di Reggio Calabria, Italy
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2
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Șerban A, Năstase G, Beșchea GA, Câmpean ȘI, Fetecău C, Popescu I, Botea F, Neacșu I. Prototype isochoric preservation device for large organs. Front Bioeng Biotechnol 2024; 12:1335638. [PMID: 38524196 PMCID: PMC10959385 DOI: 10.3389/fbioe.2024.1335638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Accepted: 02/27/2024] [Indexed: 03/26/2024] Open
Abstract
This paper presents the design and prototype of a constant volume (isochoric) vessel that can be used for the preservation of large organs in a supercooled state. This prototype is a preliminary version of a more advanced design. The device consists of a cooling bath operated by a mechanical vapor compression refrigeration unit and an isochoric chamber made of stainless steel. The preservation of organs using supercooling technology in an isochoric chamber requires a continuous temperature and pressure monitoring. While the device was initially designed for pig liver experiments, its innovative design and preservation capabilities suggest potential applications for preserving other organs as well. The isochoric reactor may be used to accommodate a variety of organ types, opening the door for further research into its multi-organ preservation capabilities. All the design details are presented in this study with the purpose of encouraging researchers in the field to build their own devices, and by this to improve the design. We chose to design the device for isochoric supercooling as the method of preservation to avoid the ice formation.
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Affiliation(s)
| | - Gabriel Năstase
- Department of Building Services, Transilvania University of Brasov, Brasov, Romania
| | | | - Ștefan-Ioan Câmpean
- Department of Building Services, Transilvania University of Brasov, Brasov, Romania
| | - Cătălin Fetecău
- Faculty of Mechanical Engineering, Dunarea de Jos University of Galati, Galati, Romania
| | - Irinel Popescu
- Center of General Surgery and Liver Transplantation, Fundeni Clinical Institute, Bucharest, Romania
| | - Florin Botea
- Center of General Surgery and Liver Transplantation, Fundeni Clinical Institute, Bucharest, Romania
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3
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Lou L, Takeoka G, Rubinsky B, Bilbao-Sainz C. Isochoric freezing to extend the shelf life of pomegranate juice. J Food Sci 2024; 89:1347-1360. [PMID: 38258913 DOI: 10.1111/1750-3841.16941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 11/21/2023] [Accepted: 12/30/2023] [Indexed: 01/24/2024]
Abstract
Pomegranate juice was treated by isochoric freezing (-15°C/130 MPa) for 24 h and then stored under three different conditions for up to 4 weeks: 4°C/0.1 MPa, 24°C/0.1 MPa, and -10°C/100 MPa. The juice microbiological stability and quality were compared to those using heat treatment at 95°C for 15 s followed by cold storage at 4°C. Heat-treated and isochoric frozen (IF) pomegranate juice stored under isochoric conditions showed no spoilage microorganisms after 4 weeks of storage. Also, IF juice stored at 4 or 24°C for 4 weeks had lower microbial loads than those in fresh pomegranate juice. IF juice stored under isochoric conditions showed greater color stability, antioxidant capacity, and nutrient retention (anthocyanins, ascorbic acid, and total phenolic compounds) than heat-treated juices stored at 4°C. IF juice stored at 4°C also showed greater anthocyanin and ascorbic acid contents compared with heat-treated juice. PRACTICAL APPLICATION: Isochoric freezing storage at -10°C can be used to preserve the quality properties of fresh pomegranate juice. Isochoric freezing at -15°C for 24 h can also be used as a pretreatment to extend the shelf life of refrigerated pomegranate juice since the applied pressures reached total inactivation levels of spoilage microorganisms.
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Affiliation(s)
- Leo Lou
- Department of Bioengineering, University of California, Berkeley, Berkeley, California, USA
| | - Gary Takeoka
- Western Regional Research Center, USDA, Albany, California, USA
| | - Boris Rubinsky
- Department of Bioengineering, University of California, Berkeley, Berkeley, California, USA
- Department of Mechanical Engineering, University of California, Berkeley, Berkeley, California, USA
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4
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Bilbao-Sainz C, Olsen C, Chiou BS, Rubinsky B, Wu VCH, McHugh T. Benefits of isochoric freezing for carrot juice preservation. J Food Sci 2024; 89:1324-1336. [PMID: 38317403 DOI: 10.1111/1750-3841.16963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Revised: 10/24/2023] [Accepted: 01/13/2024] [Indexed: 02/07/2024]
Abstract
Isochoric freezing (IF) at -5°C/77 and -10°C/100 MPa was used to preserve carrot juice for 12 weeks. The juice qualities were compared to those using heat treatment (HT) at 95°C for 15 s followed by cold storage at 4°C. The native population of total aerobic bacteria, yeasts, and molds in isochoric frozen juice remained below the detection limit for 12 weeks. In comparison, microbes started to grow in heat-treated juices after 3 weeks of refrigeration. The color of isochoric frozen juice appeared more deep orange than the fresh juice due to an increase in carotenoid extractability. IF was not effective in reducing the activities of peroxidase, polyphenol oxidase, and pectin methyl esterase compared with HT. However, the isochoric samples showed higher carotenoid content, polyphenol content, and antioxidant capacity compared to the fresh and heat-treated juices. PRACTICAL APPLICATION: Isochoric freezing was used to produce carrot juice with extended shelf life. Isochoric freezing could be a beneficial alternative to conventional heat treatment for carrot juice processing as the applied pressures reached total inactivation levels of spoilage microorganisms. Moreover, the low processing temperatures better retained desirable compounds and quality attributes of fresh juice throughout its shelf life.
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Affiliation(s)
- Cristina Bilbao-Sainz
- U.S. Department of Agriculture, Western Regional Research Center, Albany, California, USA
| | - Carl Olsen
- U.S. Department of Agriculture, Western Regional Research Center, Albany, California, USA
| | - Bor-Sen Chiou
- U.S. Department of Agriculture, Western Regional Research Center, Albany, California, USA
| | - Boris Rubinsky
- Department of Mechanical Engineering, University of California, Berkeley, California, USA
| | - Vivian C H Wu
- U.S. Department of Agriculture, Western Regional Research Center, Albany, California, USA
| | - Tara McHugh
- U.S. Department of Agriculture, Western Regional Research Center, Albany, California, USA
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5
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Grover Y, Negi PS. Recent developments in freezing of fruits and vegetables: Striving for controlled ice nucleation and crystallization with enhanced freezing rates. J Food Sci 2023; 88:4799-4826. [PMID: 37872804 DOI: 10.1111/1750-3841.16810] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 07/26/2023] [Accepted: 10/05/2023] [Indexed: 10/25/2023]
Abstract
Fruits and vegetables are rich in essential nutrients such as minerals, vitamins, and antioxidants; however, they have short shelf life. Freezing is a superior method of preservation compared to other techniques with respect to nutrient retention and maintenance of sensory attributes. However, several physical and textural quality changes associated with freezing and thawing pose a serious problem to the quality of frozen products. Some of the disadvantages associated with the currently employed methods for freezing fruits and vegetables include low rates of heat exchange in blast freezers, shape limitation in plate freezers, high cost of operation in cryogenic freezing, and freezing solution dilution in immersion freezing. Therefore, novel freezing technologies have been developed to achieve controlled ice nucleation and crystallization, enhanced freezing rate, decreased phase transition time, and maintained temperature stability. This review discusses some of the most recent approaches employed in freezing and points to their adoption for maintaining the quality of fruits and vegetables with extended storage.
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Affiliation(s)
- Yashmita Grover
- Department of Fruit and Vegetable Technology, CSIR-Central Food Technological Research Institute, Mysuru, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Pradeep Singh Negi
- Department of Fruit and Vegetable Technology, CSIR-Central Food Technological Research Institute, Mysuru, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
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6
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Câmpean ȘI, Beșchea GA, Tăbăcaru MB, Scutaru LM, Dragomir G, Brezeanu AI, Șerban A, Năstase G. Preservation of black grapes by isochoric freezing. Heliyon 2023; 9:e17740. [PMID: 37455964 PMCID: PMC10344757 DOI: 10.1016/j.heliyon.2023.e17740] [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: 02/03/2023] [Revised: 06/20/2023] [Accepted: 06/27/2023] [Indexed: 07/18/2023] Open
Abstract
Fruits are perishable. It's crucial to have an efficient preservation technique that may extend storage duration while maintaining the physical quality and nutritional values to avoid wastage. The majority of long-term storage solutions for fruits use refrigeration. In this study, we evaluate the potential of isochoric freezing as an alternative method of preservation for black grapes (Vitis vinifera L.). We compare the properties of black grapes preserved for 7 days in trehalose solution at -4 °C in isochoric conditions (average pressure 34.2 MPa) with those of fresh black grapes and with grapes preserved isobarically in four conditions (room temperature, in the fridge, in the freezer, and in a plastic bag filled with trehalose solution). The results indicate that grapes preserved by isochoric freezing at temperatures below the freezing point of water do not lose weight; on the contrary, they resulted in a very small (2%) weight gain. Freezing under isochoric conditions did not result in significant changes in terms of macroscopic appearance, colour, firmness, °Brix values, or pH. We consider that isochoric freezing has the potential to be used as a preservation method for grapes while maintaining physicochemical parameters similar to those of fresh fruits.
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Affiliation(s)
- Ștefan Ioan Câmpean
- Transilvania University of Brasov, Department of Building Services, Brasov, Romania
| | | | | | | | - George Dragomir
- Transilvania University of Brasov, Department of Building Services, Brasov, Romania
| | - Alin Ionut Brezeanu
- Transilvania University of Brasov, Department of Building Services, Brasov, Romania
| | - Alexandru Șerban
- University Politehnica of Bucharest, Thermotechnics, Engines, Thermal and Refrigeration Equipment Department, Bucharest, Romania
| | - Gabriel Năstase
- Transilvania University of Brasov, Department of Building Services, Brasov, Romania
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7
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Solanki PK, Rabin Y. Is isochoric vitrification feasible? Cryobiology 2023; 111:9-15. [PMID: 36948380 DOI: 10.1016/j.cryobiol.2023.03.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 03/16/2023] [Accepted: 03/18/2023] [Indexed: 03/24/2023]
Abstract
This study investigates the feasibility of ice-free isochoric vitrification for cryopreservation applications using mathematical modeling, computation tools, and the underlying principles of thermo-mechanics. This study is triggered by an increasing interest in the possibility of isochoric vitrification, following promising experimental results of isochoric cryopreservation. In general, isochoric cryopreservation is the preservation of biological materials in subzero temperatures in a rigid-sealed container, where some ice crystallization creates favorable pressure elevation due to the anomaly of water expansion upon ice Ih formation. Vitrification on the other hand, is the transformation of liquid into an amorphous solid in the absence of any crystals, which is typically achieved by rapid cooling of a highly viscous solution. The current study presents a mathematical model for vitrification under variable pressure conditions, building upon a recently published thermo-mechanics modeling approach for isochoric cryopreservation. Using the physical properties of dimethyl sulfoxide (DMSO) as a representative cryoprotective agent (CPA), this study suggests that vitrification under isochoric conditions is not feasible, essentially since the CPA solution contracts more than the isochoric chamber by an order of magnitude. This differential contraction can lead to absolute zero pressure in the isochoric chamber, counteracting the premise of the isochoric cryopreservation process. It is concluded that the only alternative to prevent ice formation while benefiting from the potential advantages of higher pressures is to create the required pressures by external means, and not merely by passively enclosing the specimen in an isochoric chamber.
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Affiliation(s)
- Prem K Solanki
- Biothermal Technology Laboratory, Department of Mechanical Engineering, Carnegie Mellon University, Pittsburgh, PA, 15213, USA
| | - Yoed Rabin
- Biothermal Technology Laboratory, Department of Mechanical Engineering, Carnegie Mellon University, Pittsburgh, PA, 15213, USA.
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8
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Letter to the editor: Response to “‘isochoric freezing’: Ambitions and reality”. J FOOD ENG 2023. [DOI: 10.1016/j.jfoodeng.2023.111461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
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9
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Thakur S, Jha B, Bhardwaj N, Singh A, Sawale PD, Kumar A. Isochoric freezing of foods; a review of instrumentation, mechanism, physico‐chemical influence and applications. J FOOD PROCESS PRES 2022. [DOI: 10.1111/jfpp.17113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sheetal Thakur
- Department of Food Science and Technology, MMICT & BH, MMDU Ambala India
| | - Bhavya Jha
- Department of Food Science and Technology Gautam Buddha University Noida India
| | - Naman Bhardwaj
- Department of Food Science and Technology Gautam Buddha University Noida India
| | - Ajay Singh
- Department of Food Technology Mata Gujri College Fatehgarh India
| | - Pravin D. Sawale
- Department of Dairy Technology College of Dairy Technology Yavatmal India
| | - Ashish Kumar
- Department of Food Science and Technology Gautam Buddha University Noida India
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10
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Temperature-pressure correlations of cryoprotective additives for the design of constant volume cryopreservation protocols. Cryobiology 2022; 108:42-50. [PMID: 35987387 DOI: 10.1016/j.cryobiol.2022.08.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2022] [Revised: 07/15/2022] [Accepted: 08/05/2022] [Indexed: 11/22/2022]
Abstract
In the recent years, the use of constant volume (isochoric) cryopreservation, in medicine and biotechnology has captured more attention from the research community and now there is an increasing interest in the use of this new technology. It has been established that the thermodynamics of isochoric freezing is different from that of isobaric (constant pressure) freezing. This study provides researchers in the field experimental results for various compositions of cryoprotectants commonly used in isobaric cryopreservation, in terms of temperature-pressure-molar concentration correlation. It also reveals experimental isochoric thermodynamic data for the following cryoprotectants, commonly used in isobaric cryopreservation: dimethyl sulfoxide, trehalose, ethylene glycol and diethylene glycol. Currently, the data on the pressure-temperature correlation in an isochoric system of cryoprotectants used in isobaric cryopreservation is not available. Our new experimental results indicate that the studied concentrations for each of the CPAs, lower and expands the range of temperatures in which cryopreservation by isochoric freezing can be safely practiced. We consider that these experiments will aid researchers developing new isochoric cryopreservation protocols.
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11
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Beşchea GA, Câmpean SI, Tăbăcaru MB, Vuţoiu BG, Şerban A, Năstase G. A State of the Art Review of Isochoric Cryopreservation and Cryoprotectants. CRYOLETTERS 2022. [DOI: 10.54680/fr22410110112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
There is a developing enthusiasm for discovering new methods, cryoprotectants, systems and devices for cells, tissues, and organ preservation in medicine, in sub-zero temperature conditions and a growing interest in developing more efficient and economical methods for long-term preservation
of food in a frozen state. Most of the preservation protocols currently used in medicine and food preservation involve the use of atmospheric pressure, and temperatures lower than normal body temperature in medicine, or lower than room temperature in the food industry. In this state of the
art review, we analyzed the results of a new preservation method that uses an isochoric system. We aimed to offer a clear overview of the potential of this new technology. Firstly, to study the origins of isochoric preservation, we searched using the WoS Database. A search with the world "isochoric"
returned 488 results. A more specific search of the term "isochoric freezing" returned 94 results. From these searches, we selected the 12 most relevant articles and discuss them here in detail. We present an overall characterization and criticism of the current use and potential of this new
preservation method that can be used in the medicine and food industry. The main findings indicate encouraging results for the tested biological matter, including for the preservation of food products (e.g.cherries, spinach, potatoes), biological organisms (e. g. Caenorhabditis elegans,
Escherichia coli, Listeria, Salmonella typhimurium), organs (e.g. rat hearts), tissues (e. g., tilapia fish filets) or cells (e. g., mammalian cells, pancreatic cells). Accordingly, we conclude that the isochoric system holds huge potential as a new technique in the
field of preservation.
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Affiliation(s)
- George-Andrei Beşchea
- Transilvania University of Braşov, Faculty of Civil Engineering, Department of Building Services, Braşov, Romania
| | - Stefan-Ioan Câmpean
- Transilvania University of Braşov, Faculty of Civil Engineering, Department of Building Services, Braşov, Romania
| | - Maria-Bianca Tăbăcaru
- Transilvania University of Braşov, Faculty of Civil Engineering, Department of Building Services, Braşov, Romania
| | - Beatrice-Georgiana Vuţoiu
- Transilvania University of Braşov, Faculty of Civil Engineering, Department of Building Services, Braşov, Romania
| | - Alexandru Şerban
- Transilvania University of Braşov, Faculty of Civil Engineering, Department of Building Services, Braşov, Romania
| | - Gabriel Năstase
- University Politehnica of Bucharest, Faculty of Mechanical Mechatornics, Thermotechnics, engines, thermal and refrigeration equipment Department, Bucharest, Romania
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12
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Kumari A, Chauhan AK, Tyagi P. Isochoric freezing: An innovative and emerging technology for retention of food quality characteristics. J FOOD PROCESS PRES 2022. [DOI: 10.1111/jfpp.16704] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- Aparna Kumari
- Department of Dairy Science and Food Technology, Institute of Agricultural Science Banaras Hindu University Varanasi India
| | - Anil Kumar Chauhan
- Department of Dairy Science and Food Technology, Institute of Agricultural Science Banaras Hindu University Varanasi India
| | - Prachi Tyagi
- Department of Dairy Science and Food Technology, Institute of Agricultural Science Banaras Hindu University Varanasi India
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13
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Thermo-mechanics aspects of isochoric cryopreservation: A new modeling approach and comparison with experimental data. PLoS One 2022; 17:e0267852. [PMID: 35482795 PMCID: PMC9049319 DOI: 10.1371/journal.pone.0267852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 04/16/2022] [Indexed: 11/19/2022] Open
Abstract
A new mathematical model is proposed for the analysis of thermo-mechanics effects during isochoric cryopreservation. In that process, some ice crystallization in a fixed-volume container drives pressure elevation, which may be favorable to the preservation of biological material when it resides in the unfrozen portion of the same container. The proposed model is comprehensive, integrating for the first time concepts from the disparate fields of thermodynamics, heat transfer, fluid mechanics, and solid mechanics. The novelty in this study is in treating the cryopreserved material as having a pseudo-viscoelastic behavior over a very narrow temperature range, without affecting the mechanical behavior of the material in the rest of the domain. This unique approach permits treating the domain as a continuum, while avoiding the need to trace freezing fronts and sperate the analysis to liquid and solid subdomains. Consistent with the continuum approach, the heat transfer problem is solved using the enthalpy approach. The presented analysis focusses on isochoric cooling of pure water between standard atmospheric conditions and the triple point of liquid water, ice Ih, and ice III (-22°C and 207.4 MPa). The proposed model is also applicable to isochoric vitrification, by substituting the pseudo-viscoelastic material model with the real viscosity model of the vitrifying material. Results of this study display good agreement with phase-diagram data at steady state, and with experimental data from the literature. Furthermore, this study provides a venue to discussing experimentation aspects of isochoric cryopreservation. The proposed model is further demonstrated on a 3D problem, while discussing scale considerations, crystallization conditions, and transient effects. Notably, the new model can be used to bridge the gap between limited pressure and temperature measurements during cryopreservation and the analysis of the continuum. Arguably, this study presents the most advanced thermo-mechanics model to solve practical problems relating to isochoric cryopreservation.
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14
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Bilbao-Sainz C, Sinrod AJ, Dao L, Takeoka G, Williams T, Wood D, Chiou BS, Bridges DF, Wu VC, Lyu C, Powell-Palm MJ, Rubinsky B, McHugh T. Preservation of grape tomato by isochoric freezing. Food Res Int 2021; 143:110228. [DOI: 10.1016/j.foodres.2021.110228] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 02/08/2021] [Accepted: 02/14/2021] [Indexed: 02/09/2023]
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15
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Nida S, Moses JA, Anandharamakrishnan C. Isochoric Freezing and Its Emerging Applications in Food Preservation. FOOD ENGINEERING REVIEWS 2021. [DOI: 10.1007/s12393-021-09284-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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16
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Mass transfer into biological matter using isochoric freezing. Cryobiology 2021; 100:212-215. [PMID: 33757760 DOI: 10.1016/j.cryobiol.2021.03.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 02/12/2021] [Accepted: 03/16/2021] [Indexed: 11/20/2022]
Abstract
This paper is a theoretical study of a protocol for transport of high concentrations of cryoprotectants into biological matter, using isochoric freezing. Unlike isobaric freezing, where the entire system freezes at temperatures lower than the freezing temperature, in isochoric freezing a substantial portion of the system remains unfrozen at temperatures below freezing. In isochoric freezing cryopreservation, the system is designed in such a way that the biological matter remains unfrozen and surrounded by an unfrozen solution. The protocol in this study involves the freezing of an isochoric systems along the "liquidus line" at which water and ice are in thermodynamic equilibrium. Rejection of solutes by ice increases the concentration of the solutes in the unfrozen solution surrounding the unfrozen biological matter, leading, thereby, to transport of increasingly higher concentrations of cryoprotectants into the biological matter, as the temperature of the system is lowered and the toxicity of the cryoprotectants is reduced.
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17
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Zhu Z, Li T, Sun DW. Pressure-related cooling and freezing techniques for the food industry: fundamentals and applications. Crit Rev Food Sci Nutr 2020; 61:2793-2808. [PMID: 33146020 DOI: 10.1080/10408398.2020.1841729] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Cooling and freezing are two widely used methods for food preservation. Conventional cooling and freezing techniques are usually with low efficiency and prone to damage foodstuffs. In order to increase cooling and freezing efficiencies and ensure better food quality, many efforts have been performed. As effective solutions, pressure-related techniques such as vacuum cooling (VC), vacuum film cooling (VFC), vacuum spray cooling (VSC), pressure shift freezing (PSF) and isochoric freezing (ICF) have attracted a lot of interests. The current review intends to provide an overview of pressure-related cooling and freezing techniques for the food industry. In the review, the fundamentals including principles, experimental systems, thermodynamic and kinetic mechanisms and their relevant mathematical models are presented, latest applications of these techniques in the food industry are summarized, and future trends concerning technological development and industrialization are highlighted. Pressure plays an important role in improving the cooling and freezing processes and ensuring food qualities, and mathematical modeling is an effective tool for understanding the thermodynamic and kinetic mechanisms of these processes. However, the latest researches showed that despite many merits of these pressure-related processes, limitations still exist in applying some of the techniques in the food industry. For achieving technological development and industrialization of the pressure-related processes, further researches should focus on improving model performance, integrating multiple technologies, and cost control.
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Affiliation(s)
- Zhiwei Zhu
- School of Food Science and Engineering, South China University of Technology, Guangzhou, China.,Academy of Contemporary Food Engineering, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou, China.,Engineering and Technological Research Centre of Guangdong Province on Intelligent Sensing and Process Control of Cold Chain Foods, and Guangdong Province Engineering Laboratory for Intelligent Cold Chain Logistics Equipment for Agricultural Products, Guangzhou Higher Education Mega Centre, Guangzhou, China
| | - Tian Li
- School of Food Science and Engineering, South China University of Technology, Guangzhou, China.,Academy of Contemporary Food Engineering, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou, China.,Engineering and Technological Research Centre of Guangdong Province on Intelligent Sensing and Process Control of Cold Chain Foods, and Guangdong Province Engineering Laboratory for Intelligent Cold Chain Logistics Equipment for Agricultural Products, Guangzhou Higher Education Mega Centre, Guangzhou, China
| | - Da-Wen Sun
- School of Food Science and Engineering, South China University of Technology, Guangzhou, China.,Academy of Contemporary Food Engineering, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou, China.,Engineering and Technological Research Centre of Guangdong Province on Intelligent Sensing and Process Control of Cold Chain Foods, and Guangdong Province Engineering Laboratory for Intelligent Cold Chain Logistics Equipment for Agricultural Products, Guangzhou Higher Education Mega Centre, Guangzhou, China.,Food Refrigeration and Computerized Food Technology (FRCFT), Agriculture and Food Science Centre, University College Dublin, National University of Ireland, Dublin 4, Ireland
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Transport phenomena and their effect on microstructure of frozen fruits and vegetables. Trends Food Sci Technol 2020. [DOI: 10.1016/j.tifs.2020.04.016] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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