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Saavedra J, de Oliveira Gomes B, Augusto PED, Rojas ML, Miano AC. Structure–process interaction in mass transfer processes: Application of ethanol and ultrasound in a vascular structure. J FOOD PROCESS ENG 2022. [DOI: 10.1111/jfpe.14187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Juan Saavedra
- Dirección de Investigación, Innovación y Responsabilidad Social Universidad Privada del Norte (UPN) Trujillo Peru
| | - Bruna de Oliveira Gomes
- Department of Agri‐food Industry, Food and Nutrition (LAN), Luiz de Queiroz College of Agriculture (ESALQ) University of São Paulo (USP) Piracicaba Brazil
| | - Pedro E. D. Augusto
- Department of Agri‐food Industry, Food and Nutrition (LAN), Luiz de Queiroz College of Agriculture (ESALQ) University of São Paulo (USP) Piracicaba Brazil
| | - Meliza Lindsay Rojas
- Dirección de Investigación, Innovación y Responsabilidad Social Universidad Privada del Norte (UPN) Trujillo Peru
| | - Alberto Claudio Miano
- Dirección de Investigación, Innovación y Responsabilidad Social Universidad Privada del Norte (UPN) Trujillo Peru
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Gomes BDO, Santos KC, Carvalho GR, Bitencourt BS, Guedes JS, Augusto PED. Uvaia fruit (
Eugenia pyriformis
Cambess) drying: Ethanol as pre‐treatment, convective drying kinetics and bioactive compounds. J FOOD PROCESS PRES 2022. [DOI: 10.1111/jfpp.16284] [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)
- Bruna de Oliveira Gomes
- Department of Agri‐food Industry, Food and Nutrition (LAN) Luiz de Quiroz College of Agriculture (ESALQ) University of São Paulo (USP) Piracicaba Brazil
| | - Karoline Costa Santos
- Department of Agri‐food Industry, Food and Nutrition (LAN) Luiz de Quiroz College of Agriculture (ESALQ) University of São Paulo (USP) Piracicaba Brazil
| | - Gisandro Reis Carvalho
- Department of Agri‐food Industry, Food and Nutrition (LAN) Luiz de Quiroz College of Agriculture (ESALQ) University of São Paulo (USP) Piracicaba Brazil
| | - Bruna Sousa Bitencourt
- Department of Agri‐food Industry, Food and Nutrition (LAN) Luiz de Quiroz College of Agriculture (ESALQ) University of São Paulo (USP) Piracicaba Brazil
- Department of Food Science (DCA) Federal University of Lavras (UFLA) Lavras Brazil
| | - Jaqueline Souza Guedes
- Department of Agri‐food Industry, Food and Nutrition (LAN) Luiz de Quiroz College of Agriculture (ESALQ) University of São Paulo (USP) Piracicaba Brazil
| | - Pedro Esteves Duarte Augusto
- Department of Agri‐food Industry, Food and Nutrition (LAN) Luiz de Quiroz College of Agriculture (ESALQ) University of São Paulo (USP) Piracicaba Brazil
- Food and Nutrition Research Center (NAPAN) University of São Paulo (USP) São Paulo Brazil
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Miano AC, Rojas ML, Augusto PED. Combining ultrasound, vacuum and/or ethanol as pretreatments to the convective drying of celery slices. ULTRASONICS SONOCHEMISTRY 2021; 79:105779. [PMID: 34649164 PMCID: PMC8517379 DOI: 10.1016/j.ultsonch.2021.105779] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Revised: 09/21/2021] [Accepted: 10/01/2021] [Indexed: 05/20/2023]
Abstract
This work studied three emerging approaches to improve the convective drying (50 °C, 0.8 m/s) of celery. Celery slices of 2 mm thick were pretreated for 5 min using ultrasound (32 W/L, 40 kHz), vacuum (75 kPa vacuum pressure) and ethanol (99.8% v/v, as drying accelerator) applied individually or in combination. To evaluate individual effects of ultrasound and vacuum, the treatments were also performed with distilled water or air medium, respectively. Moreover, the cavitational level was characterized in each condition. Drying kinetics was evaluated tending into account the drying time required by each treatment and the Page's model parameters. In addition, microstructural effects and shrinkage were evaluated. As results, ethanol combined with ultrasound significantly improved drying kinetics reducing drying time by around 38%. However, vacuum pretreatment did not affect drying kinetics even in combination with ethanol and/or ultrasound. Microstructural evaluation did not evidence cell disruption, suggesting changes in intercellular spaces, pores and/or cell wall permeability. The use of ethanol and vacuum showed a greater effect on shrinkage after pretreatment and after drying, respectively. In conclusion, at the studied conditions, the drying acceleration by vacuum and ultrasound is lower compared to the effect produced using ethanol.
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Affiliation(s)
- Alberto Claudio Miano
- Dirección de Investigación y Desarrollo, Universidad Privada del Norte (UPN), Trujillo, Peru
| | - Meliza Lindsay Rojas
- Dirección de Investigación y Desarrollo, Universidad Privada del Norte (UPN), Trujillo, Peru
| | - Pedro E D Augusto
- Department of Agri-food Industry, Food and Nutrition (LAN), Luiz de Queiroz College of Agriculture (ESALQ), University of São Paulo (USP), Piracicaba, SP, Brazil; Food and Nutrition Research Center (NAPAN), University of São Paulo (USP), São Paulo, SP, Brazil
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Selected Quality Parameters of Air-Dried Apples Pretreated by High Pressure, Ultrasounds and Pulsed Electric Field-A Comparison Study. Foods 2021; 10:foods10081943. [PMID: 34441719 PMCID: PMC8393259 DOI: 10.3390/foods10081943] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 08/06/2021] [Accepted: 08/17/2021] [Indexed: 01/12/2023] Open
Abstract
The aim of this work was to compare selected physicochemical properties of air dried ‘Golden Delicious’ apples, pretreated either by high-pressure processing (HPP), ultrasound (US) or pulsed electric field (PEF). Following parameters of pretreatment were used: HPP–400 MPa for 15 min, US–21 kHz, 180 W for 45 min, PEF–1 kV/cm, 3.5 kJ/kg. The quality of materials was evaluated by their rehydration properties, hygroscopicity, color and total phenolic content. To compare the effectiveness of the utilized methods, determined properties were expressed as relative comparison values against the reference sample obtained without any pretreatment in the same conditions. The performed research demonstrated that properties can be shaped by the application of proper pretreatment methods. For instance, PEF was shown to be the best method for improving water uptake during rehydration, whereas HPP was the most effective in decreasing hygroscopic properties in comparison with untreated dried apples. Among the investigated methods, HPP resulted in the deepest browning and thus total color difference, while the effects of US and PEF were comparable. For all pretreated dried apples, the total phenolic content was lower when compared with reference material, though the smallest drop was found in sonicated samples.
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Influence of Ultrasound and the Conditions of Convective Drying with Dehumidified Air on the Course of the Process and Selected Properties of Apple Tissue. Foods 2021; 10:foods10081840. [PMID: 34441617 PMCID: PMC8391313 DOI: 10.3390/foods10081840] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 07/28/2021] [Accepted: 08/04/2021] [Indexed: 11/16/2022] Open
Abstract
The conditions of convective drying induce a negative effect on the quality of the dried products, and thus, innovative solutions, such as the utilization of ultrasound and dehumidified air are gaining importance. Therefore, the aim of this study was to evaluate the impact of ultrasound pretreatment and variable air temperature on the kinetics of convective drying with dehumidified air and the quality of dried apples. Apples were dried with dehumidified and non-dehumidified air at 55, 70 and 85 °C. Preliminary ultrasound treatment was conducted by immersion for 60 min. The effect of both ultrasound and dehumidified air utilization was more prominent in the terms of drying time reduction, when lower drying temperatures were used. Drying of apples with dehumidified air, preceded by ultrasound pretreatment, resulted in a greater rehydration capacity of the products, and limited the browning process. Dehumidified air increased the lightness of the dried products, while sonication darkened them. The use of ultrasound before drying coupled with a drying with dehumidified medium at a temperature of 70 °C reduced the exposure of the product to a high temperature and oxygen. Products treated before dehumidified air drying with ultrasounds were characterized by high total phenolic content and the greatest antioxidant activity. This was because such technological treatment reduced exposure of the product to a high temperature and oxygen.
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Rojas ML, Gomes BDO, Carvalho GR, Santos KC, Guedes JS, Bitencourt BS, Augusto PED. Convective drying of cambuci, a native fruit from the Brazilian Atlantic Forest: Effect of pretreatments with ethanol and freezing. J FOOD PROCESS ENG 2021. [DOI: 10.1111/jfpe.13822] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Meliza Lindsay Rojas
- Dirección de Investigación y Desarrollo Universidad Privada del Norte (UPN) Trujillo Peru
| | - Bruna de Oliveira Gomes
- Department of Agri‐food Industry, Food and Nutrition (LAN), Luiz de Queiroz College of Agriculture (ESALQ) University of São Paulo (USP) Piracicaba São Paulo Brazil
| | - Gisandro Reis Carvalho
- Department of Agri‐food Industry, Food and Nutrition (LAN), Luiz de Queiroz College of Agriculture (ESALQ) University of São Paulo (USP) Piracicaba São Paulo Brazil
| | - Karoline Costa Santos
- Department of Agri‐food Industry, Food and Nutrition (LAN), Luiz de Queiroz College of Agriculture (ESALQ) University of São Paulo (USP) Piracicaba São Paulo Brazil
| | - Jaqueline Souza Guedes
- Department of Agri‐food Industry, Food and Nutrition (LAN), Luiz de Queiroz College of Agriculture (ESALQ) University of São Paulo (USP) Piracicaba São Paulo Brazil
| | - Bruna Sousa Bitencourt
- Department of Agri‐food Industry, Food and Nutrition (LAN), Luiz de Queiroz College of Agriculture (ESALQ) University of São Paulo (USP) Piracicaba São Paulo Brazil
- Department of Food Science (DCA) Federal University of Lavras (UFLA) Lavras Minas Gerais Brazil
| | - Pedro Esteves Duarte Augusto
- Department of Agri‐food Industry, Food and Nutrition (LAN), Luiz de Queiroz College of Agriculture (ESALQ) University of São Paulo (USP) Piracicaba São Paulo Brazil
- Food and Nutrition Research Center (NAPAN) University of São Paulo (USP) São Paulo São Paulo Brazil
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Rojas ML, Augusto PED, Cárcel JA. Combining ethanol pre-treatment and ultrasound-assisted drying to enhance apple chips by fortification with black carrot anthocyanin. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2021; 101:2078-2089. [PMID: 32974925 DOI: 10.1002/jsfa.10830] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 09/03/2020] [Accepted: 09/24/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND An interesting approach to improve dried foods nutritional properties, functionality, and sensorial attributes, is by taking advantage of pre-treatments for incorporating components into the food matrix. Based on this, this work studied the incorporation of black carrot anthocyanins in apple tissue by using ethanol (concentrations 0-300 mL L-1 ) as a pre-treatment to ultrasound-assisted convective drying. Samples were pre-treated in acidified ethanol solutions, with and without anthocyanins, and then dried (50 °C, 1 m s-1 ) by convective and ultrasound-assisted convective (21.77 kHz, 20.5 kW m-3 ) drying. Both the drying process improvement and the obtained product properties were studied. RESULTS The anthocyanins did not influence the drying kinetics. In contrast, time reduction was > 50% by using both ethanol pre-treatments and ultrasound. Ethanol pre-treatments decreased the external resistance to mass transfer, while ultrasound decreased both internal and external resistances. The impregnation increased the anthocyanins (above 947%), which were retained after drying. Colour modifications after pre-treatments and after drying (L*, b*, h° decrease, and a* increase), and antioxidant capacity retention were observed in samples with anthocyanin addition. CONCLUSION The results point that ethanol pre-treatments and ultrasound application can accelerate drying, and through the natural colouring incorporation during pre-treatments, the nutritional properties of dried samples were better retained. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Meliza Lindsay Rojas
- Analysis and Simulation of Agro-food Processes Group (ASPA), Food Technology Department, Universitat Politècnica de València (UPV), Valencia, Spain
- Dirección de Investigación y Desarrollo, Universidad Privada del Norte, Trujillo, Peru
- Department of Agri-food Industry, Food and Nutrition (LAN), Luiz de Queiroz College of Agriculture (ESALQ), University of São Paulo (USP), Piracicaba, Brazil
| | - Pedro Esteves Duarte Augusto
- Department of Agri-food Industry, Food and Nutrition (LAN), Luiz de Queiroz College of Agriculture (ESALQ), University of São Paulo (USP), Piracicaba, Brazil
- Food and Nutrition Research Centre (NAPAN), University of São Paulo (USP), São Paulo, Brazil
| | - Juan Andrés Cárcel
- Analysis and Simulation of Agro-food Processes Group (ASPA), Food Technology Department, Universitat Politècnica de València (UPV), Valencia, Spain
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Current Applications of Ultrasound in Fruit and Vegetables Osmotic Dehydration Processes. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11031269] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Ultrasound (US) is a promising technology, which can be used to improve the efficacy of the processes in food technology and the quality of final product. US technique is used, e.g., to support mass and heat transfer processes, such as osmotic dehydration, drying and freezing, as well as extraction, crystallization, emulsification, filtration, etc. Osmotic dehydration (OD) is a well-known process applied in food processing; however, improvements are required due to the long duration of the process. Therefore, many recent studies focus on the development of OD combined with sonication as a pretreatment method and support during the OD process. The article describes the mechanism of the OD process as well as those of US and changes in microstructure caused by sonication. Furthermore, it focuses on current applications of US in fruits and vegetables OD processes, comparison of ultrasound-assisted osmotic dehydration to sonication treatment and synergic effect of US and other innovative technics/treatments in OD (such as innovative osmotic solutions, blanching, pulsed electric field, reduced pressure and edible coatings). Additionally, the physical and functional properties of tissue subjected to ultrasound pretreatment before OD as well as ultrasound-assisted osmotic dehydration are described.
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The Assessment of the Possibility of Using Ethanol and Ultrasound to Design the Properties of Dried Carrot Tissue. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11020689] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The purpose of this study was to investigate the effect of pre-treatment in ethyl alcohol for 5, 15, 60 and 180 s with the application of ultrasound on the course of convective drying and properties of carrot tissue directly after the treatment and after the drying process. The treatment in ethanol resulted in loss of mass, increase of dry matter, ethanol conductivity, extractivity of carotenoids with a slight effect on the colour of carrot tissue after the treatment. The utilization of ultrasound during immersion in ethanol contributed to additional increase of conductivity of ethanol, and extractivity of carotenoids. The immersion in ethanol virtually did not affect the drying kinetics, which can be explained by the increase of shrinkage of the tissue in relation to the untreated dried tissue. Despite the lack of the influence on the drying course in the ethanol-immersed carrot, an increase of the carotenoid content (up to 135%) and the rehydration ability (up to 19%) was noted with the simultaneously unchanged colour of dried carrot in comparison to untreated dried material, which indicates the possibility to improve the quality of dried carrot after immersion in ethanol.
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Santos KC, Guedes JS, Rojas ML, Carvalho GR, Augusto PED. Enhancing carrot convective drying by combining ethanol and ultrasound as pre-treatments: Effect on product structure, quality, energy consumption, drying and rehydration kinetics. ULTRASONICS SONOCHEMISTRY 2021; 70:105304. [PMID: 32791464 PMCID: PMC7786590 DOI: 10.1016/j.ultsonch.2020.105304] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 07/16/2020] [Accepted: 08/03/2020] [Indexed: 05/07/2023]
Abstract
Ultrasound was combined with ethanol to improve different aspects of carrot convective drying, evaluating both processing and product quality. The ultrasound in water treatment resulted in cellular swelling and small impact on texture. Differently, the ultrasound in ethanol and ethanol treatments modified both carrot microstructure (cell wall modifications of parenchymatic tissue) and macrostructure (shrinkage and resistance to perforation). Pre-treatments with ultrasound in ethanol and ethanol improved the drying kinetics, reducing the processing time (~50%) and the energy consumption (42-62%). These pre-treatments also enhanced rehydration, whose initial rate and water retention were higher than the control. In addition, the carotenoid content was preserved after drying, for all the treatments. Any impact on shrinkage was observed. A mechanistic discussion, based on structural modification (microstructure and macrostructure) and physical properties of water and ethanol, was provided. As conclusion, this work not only described positive aspects of combining the technologies of ultrasound and ethanol as pre-treatments to convective drying, but also proposed mechanisms to explain the phenomena.
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Affiliation(s)
- Karoline Costa Santos
- Department of Agri-food Industry, Food and Nutrition (LAN), Luiz de Queiroz College of Agriculture (ESALQ), University of São Paulo (USP), Piracicaba, SP, Brazil
| | - Jaqueline Souza Guedes
- Department of Agri-food Industry, Food and Nutrition (LAN), Luiz de Queiroz College of Agriculture (ESALQ), University of São Paulo (USP), Piracicaba, SP, Brazil
| | - Meliza Lindsay Rojas
- Dirección de Investigación y Desarrollo, Universidad Privada del Norte (UPN), Trujillo, Peru
| | - Gisandro Reis Carvalho
- Department of Agri-food Industry, Food and Nutrition (LAN), Luiz de Queiroz College of Agriculture (ESALQ), University of São Paulo (USP), Piracicaba, SP, Brazil
| | - Pedro Esteves Duarte Augusto
- Department of Agri-food Industry, Food and Nutrition (LAN), Luiz de Queiroz College of Agriculture (ESALQ), University of São Paulo (USP), Piracicaba, SP, Brazil; Food and Nutrition Research Center (NAPAN), University of São Paulo (USP), São Paulo, SP, Brazil.
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Carvalho GR, Massarioli AP, Alvim ID, Augusto PED. Iron-Fortified Pineapple Chips Produced Using Microencapsulation, Ethanol, Ultrasound and Convective Drying. FOOD ENGINEERING REVIEWS 2020. [DOI: 10.1007/s12393-020-09259-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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