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Jiang P, Kang Z, Zhao S, Meng N, Liu M, Tan B. Effect of Dynamic High-Pressure Microfluidizer on Physicochemical and Microstructural Properties of Whole-Grain Oat Pulp. Foods 2023; 12:2747. [PMID: 37509839 PMCID: PMC10378919 DOI: 10.3390/foods12142747] [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: 06/15/2023] [Revised: 07/14/2023] [Accepted: 07/17/2023] [Indexed: 07/30/2023] Open
Abstract
By avoiding the filtration step and utilizing the whole components of oats, the highest utilization rate of raw materials, improving the nutritional value of products and reducing environmental pollution, can be achieved in the production of whole-grain oat drinks. This study innovatively introduced a dynamic high-pressure microfluidizer (DHPM) into the processing of whole-grain oat pulp, which aimed to achieve the efficient crushing, homogenizing and emulsification of starch, dietary fiber and other substances. Due to DHPM processing, the instability index and slope value were reduced, whereas the β-glucan content, soluble protein content and soluble dietary fiber content were increased. In the samples treated with a pressure of 120 MPa and 150 MPa, 59% and 67% more β-glucan content was released, respectively. The soluble dietary fiber content in the samples treated with a pressure of 120 MPa and 150 MPa was increased by 44.8% and 43.2%, respectively, compared with the sample treated with a pressure of 0 MPa. From the perspective of the relative stability of the sample and nutrient enhancement, the processing pressure of 120 MPa was a good choice. In addition, DHPM processing effectively reduced the average particle size and the relaxation time of the water molecules of whole-grain oat pulp, whereas it increased the apparent viscosity of whole-grain oat pulp; all of the above changes alleviated the gravitational subsidence of particles to a certain extent, and thus the overall stability of the system was improved. Furthermore, CLSM and AFM showed that the samples OM-120 and OM-150 had a more uniform and stable structural system as a whole. This study could provide theoretical guidance for the development of a whole-grain oat drink with improved quality and consistency.
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Affiliation(s)
- Ping Jiang
- Institute of Cereal and Oil Science and Technology, Academy of National Food and Strategic Reserves Administration, Beijing 100037, China
| | - Ziyue Kang
- Institute of Cereal and Oil Science and Technology, Academy of National Food and Strategic Reserves Administration, Beijing 100037, China
| | - Su Zhao
- Institute of Cereal and Oil Science and Technology, Academy of National Food and Strategic Reserves Administration, Beijing 100037, China
| | - Ning Meng
- Institute of Cereal and Oil Science and Technology, Academy of National Food and Strategic Reserves Administration, Beijing 100037, China
| | - Ming Liu
- Institute of Cereal and Oil Science and Technology, Academy of National Food and Strategic Reserves Administration, Beijing 100037, China
| | - Bin Tan
- Institute of Cereal and Oil Science and Technology, Academy of National Food and Strategic Reserves Administration, Beijing 100037, China
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2
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Xu F, Xue L, Ma Y, Niu T, Zhao P, Wu Z, Wang Y. Effects of Ultra-High-Pressure Jet Processing on Casein Structure and Curdling Properties of Skimmed Bovine Milk. Molecules 2023; 28:molecules28052396. [PMID: 36903641 PMCID: PMC10005577 DOI: 10.3390/molecules28052396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 02/26/2023] [Accepted: 02/27/2023] [Indexed: 03/08/2023] Open
Abstract
Ultra-high-pressure jet processing (UHPJ) is a new non-thermal processing technique that can be employed for the homogenization and the sterilization of dairy products. However, the effects on dairy products are unknown when using UHPJ for homogenization and sterilization. Thus, this study aimed to investigate the effects of UHPJ on the sensory and curdling properties of skimmed milk and the casein structure in skimmed milk. Skimmed bovine milk was treated with UHPJ using different pressures (100, 150, 200, 250, 300 MPa) and casein was extracted by isoelectric precipitation. Subsequently, the average particle size, Zeta potential, contents of free sulfhydryl and disulfide bonds, secondary structure, and surface micromorphology were all used as evaluation indicators to explore the effects of UHPJ on the structure of casein. The results showed that with an increase of pressure, the free sulfhydryl group content changed irregularly, while the disulfide bond content increased from 1.085 to 3.0944 μmol/g. The content of α-helix and random coil in the casein decreased, while the β-sheet content increased at 100, 150, 200 MPa pressure. However, treatment with higher pressures of 250 and 300 MPa had the opposite effect. The average particle size of the casein micelles first decreased to 167.47 nm and then increased up to 174.63 nm; the absolute value of Zeta potential decreased from 28.33 to 23.77 mV. Scanning electron microscopy analysis revealed that the casein micelles had fractured into flat, loose, porous structures under pressure instead of into large clusters. After being ultra-high-pressure jet-processed, the sensory properties of skimmed milk and its fermented curd were analyzed concurrently. The results demonstrated that UHPJ could alter the viscosity and color of skimmed milk, shortening curdling time from 4.5 h to 2.67 h, and that the texture of the curd fermented with this skimmed milk could be improved to varying degrees by changing the structure of casein. Thus, UHPJ has a promising application in the manufacture of fermented milk due to its ability to enhance the curdling efficiency of skimmed milk and improve the texture of fermented milk.
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Affiliation(s)
- Fei Xu
- Tianjin Key Laboratory of Food Biotechnology, College of Biotechnology and Food Science, Tianjin University of Commerce, Tianjin 300134, China
- Mengniu Hi-Tech Dairy (Beijing) Co., Ltd., Beijing 101107, China
| | - Lu Xue
- Tianjin Key Laboratory of Food Biotechnology, College of Biotechnology and Food Science, Tianjin University of Commerce, Tianjin 300134, China
- Correspondence: (L.X.); (Y.W.)
| | - Yanfeng Ma
- Mengniu Hi-Tech Dairy (Beijing) Co., Ltd., Beijing 101107, China
| | - Tianjiao Niu
- Mengniu Hi-Tech Dairy (Beijing) Co., Ltd., Beijing 101107, China
| | - Pei Zhao
- Tianjin Key Laboratory of Food Biotechnology, College of Biotechnology and Food Science, Tianjin University of Commerce, Tianjin 300134, China
| | - Zijian Wu
- Tianjin Key Laboratory of Food Biotechnology, College of Biotechnology and Food Science, Tianjin University of Commerce, Tianjin 300134, China
| | - Yanfa Wang
- Mengniu Hi-Tech Dairy (Beijing) Co., Ltd., Beijing 101107, China
- Correspondence: (L.X.); (Y.W.)
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3
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Whole peanut milk prepared by an industry-scale microfluidization system: Physical stability, microstructure, and flavor properties. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2022.114140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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4
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Suhag R, Dhiman A, Prabhakar PK, Sharma A, Singh A, Upadhyay A. Microfluidization of liquid egg yolk: Modelling of rheological characteristics and interpretation of flow behavior under a pipe flow. INNOV FOOD SCI EMERG 2022. [DOI: 10.1016/j.ifset.2022.103119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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5
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Microfluidization: A promising food processing technology and its challenges in industrial application. Food Control 2022. [DOI: 10.1016/j.foodcont.2021.108794] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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6
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Wang C, Wu J, Wang C, Mu C, Ngai T, Lin W. Advances in Pickering emulsions stabilized by protein particles: Toward particle fabrication, interaction and arrangement. Food Res Int 2022; 157:111380. [DOI: 10.1016/j.foodres.2022.111380] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 05/10/2022] [Accepted: 05/11/2022] [Indexed: 11/26/2022]
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7
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Herrera-Chávez B, Trujillo AJ, Calero P, Falconí MI, Sánchez-Macías D. Effects of colostrum in milk on the effectiveness of the pasteurization process and cheese milk quality. JOURNAL OF APPLIED ANIMAL RESEARCH 2022. [DOI: 10.1080/09712119.2022.2056466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Byron Herrera-Chávez
- Animal Production and Industrialization Research Unit, Faculty of Engineering, Universidad Nacional de Chimborazo, Riobamba, Ecuador
- Centre d'Innovació, Recerca i Transferència en Tecnologia dels Aliments (CIRTTA), TECNIO, XIA, Departament de Ciència Animal i del Aliments, Facultat de Veterinària, Universitat Autònoma de Barcelona, Bellaterra, Spain
| | - Antonio José Trujillo
- Centre d'Innovació, Recerca i Transferència en Tecnologia dels Aliments (CIRTTA), TECNIO, XIA, Departament de Ciència Animal i del Aliments, Facultat de Veterinària, Universitat Autònoma de Barcelona, Bellaterra, Spain
| | - Paola Calero
- Animal Production and Industrialization Research Unit, Faculty of Engineering, Universidad Nacional de Chimborazo, Riobamba, Ecuador
| | - María Inés Falconí
- Animal Production and Industrialization Research Unit, Faculty of Engineering, Universidad Nacional de Chimborazo, Riobamba, Ecuador
| | - Davinia Sánchez-Macías
- Animal Production and Industrialization Research Unit, Faculty of Engineering, Universidad Nacional de Chimborazo, Riobamba, Ecuador
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Díaz-Bustamante ML, Fernández-Niño M, Reyes LH, Alvarez Solano OA. Multiscale Approach to Dairy Products Design. FRONTIERS IN CHEMICAL ENGINEERING 2022. [DOI: 10.3389/fceng.2022.830314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Dairy products are among the most popular nutritious foods in the world. Understanding the relationship between the composition, process, and structural properties at different scales (molecular, microscopic, and macroscopic) is fundamental to designing dairy products. This review highlights the need to analyze this relationship from different scales as an essential step during product design through a multiscale approach.
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Torres‐Haro A, Arellano‐Plaza M, Mateos‐Díaz JC, Espinosa‐Andrews H, Castillo‐Herrera GA. Non‐conventional high‐pressure extraction process: A comparative study for astaxanthin recovery from
Xanthophyllomyces dendrorhous. Int J Food Sci Technol 2022. [DOI: 10.1111/ijfs.15466] [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)
- Alejandro Torres‐Haro
- Industrial Biotechnology Centro de Investigacion y Asistencia en Tecnologia y Diseno del Estado de Jalisco Guadalajara Mexico
| | - Melchor Arellano‐Plaza
- Industrial Biotechnology Centro de Investigacion y Asistencia en Tecnologia y Diseno del Estado de Jalisco Guadalajara Mexico
| | - Juan C. Mateos‐Díaz
- Industrial Biotechnology Centro de Investigacion y Asistencia en Tecnologia y Diseno del Estado de Jalisco Guadalajara Mexico
| | - Hugo Espinosa‐Andrews
- Food Technology Centro de Investigacion y Asistencia en Tecnologia y Diseno del Estado de Jalisco Guadalajara Mexico
| | - Gustavo A. Castillo‐Herrera
- Food Technology Centro de Investigacion y Asistencia en Tecnologia y Diseno del Estado de Jalisco Guadalajara Mexico
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10
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Comprehensive review on potential applications of microfluidization in food processing. Food Sci Biotechnol 2021; 31:17-36. [DOI: 10.1007/s10068-021-01010-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Revised: 10/30/2021] [Accepted: 11/04/2021] [Indexed: 01/28/2023] Open
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11
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Role of Pascalization in Milk Processing and Preservation: A Potential Alternative towards Sustainable Food Processing. PHOTONICS 2021. [DOI: 10.3390/photonics8110498] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Renewed technology has created a demand for foods which are natural in taste, minimally processed, and safe for consumption. Although thermal processing, such as pasteurization and sterilization, effectively limits pathogenic bacteria, it alters the aroma, flavor, and structural properties of milk and milk products. Nonthermal technologies have been used as an alternative to traditional thermal processing technology and have the ability to provide safe and healthy dairy products without affecting their nutritional composition and organoleptic properties. Other than nonthermal technologies, infrared spectroscopy is a nondestructive technique and may also be used for predicting the shelf life and microbial loads in milk. This review explains the role of pascalization or nonthermal techniques such as high-pressure processing (HPP), pulsed electric field (PEF), ultrasound (US), ultraviolet (UV), cold plasma treatment, membrane filtration, micro fluidization, and infrared spectroscopy in milk processing and preservation.
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12
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Structure and physicochemical properties of starch affected by dynamic pressure treatments: A review. Trends Food Sci Technol 2021. [DOI: 10.1016/j.tifs.2021.07.036] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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13
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Ozturk OK, Turasan H. Applications of microfluidization in emulsion-based systems, nanoparticle formation, and beverages. Trends Food Sci Technol 2021. [DOI: 10.1016/j.tifs.2021.07.033] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Ghanghas N, Prabhakar PK, Sharma S, Mukilan M. Microfluidization of fenugreek (Trigonella foenum graecum) seed protein concentrate: Effects on functional, rheological, thermal and microstructural properties. Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2021.111830] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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15
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The nutritional and physicochemical properties of whole corn slurry prepared by a novel industry-scale microfluidizer system. Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2021.111096] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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16
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Khalesi M, FitzGerald RJ. Insolubility in milk protein concentrates: potential causes and strategies to minimize its occurrence. Crit Rev Food Sci Nutr 2021; 62:6973-6989. [PMID: 33856251 DOI: 10.1080/10408398.2021.1908955] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Milk protein concentrates (MPCs), which are produced from skim milk following a series of manufacturing steps including pasteurization, membrane filtration, evaporation and spray drying, represent a relatively new category of dairy ingredients. MPC powders mainly comprise caseins and whey proteins in the same ratio of occurrence as in milk. While bovine MPCs have applications as an ingredient in several protein enriched food products, technofunctional concerns, e.g., reduced solubility and emulsification properties, especially after long-term storage, limit their widespread and consistent utilization in many food products. Changes in the surface and internal structure of MPC powder particles during manufacture and storage occur via casein-casein and casein-whey protein interactions and also via the formation of casein crosslinks in the presence of calcium ions which are associated with diminishment of MPCs functional properties. The aggregation of micellar caseins as a result of these interactions has been considered as the main cause of insolubility in MPCs. In addition, the occurrence of lactose-protein interactions as a result of the promotion of the Maillard reaction mainly during storage of MPC may lead to greater insolubility. This review focuses on the solubility of MPC with an emphasis on understanding the factors involved in its insolubility along with approaches which may be employed to overcome MPC insolubility. Several strategies have been developed based on manipulation of the manufacturing process, along with composition, physical, chemical and enzymatic modifications to overcome MPC insolubility. Despite many advances, dairy ingredient manufacturers are still investigating technical solutions to resolve the insolubility issues associated with the large-scale manufacture of MPC.
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17
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Gómez-López VM, Pataro G, Tiwari B, Gozzi M, Meireles MÁA, Wang S, Guamis B, Pan Z, Ramaswamy H, Sastry S, Kuntz F, Cullen PJ, Vidyarthi SK, Ling B, Quevedo JM, Strasser A, Vignali G, Veggi PC, Gervilla R, Kotilainen HM, Pelacci M, Viganó J, Morata A. Guidelines on reporting treatment conditions for emerging technologies in food processing. Crit Rev Food Sci Nutr 2021; 62:5925-5949. [PMID: 33764212 DOI: 10.1080/10408398.2021.1895058] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
In the last decades, different non-thermal and thermal technologies have been developed for food processing. However, in many cases, it is not clear which experimental parameters must be reported to guarantee the experiments' reproducibility and provide the food industry a straightforward way to scale-up these technologies. Since reproducibility is one of the most important science features, the current work aims to improve the reproducibility of studies on emerging technologies for food processing by providing guidelines on reporting treatment conditions of thermal and non-thermal technologies. Infrared heating, microwave heating, ohmic heating and radiofrequency heating are addressed as advanced thermal technologies and isostatic high pressure, ultra-high-pressure homogenization sterilization, high-pressure homogenization, microfluidization, irradiation, plasma technologies, power ultrasound, pressure change technology, pulsed electric fields, pulsed light and supercritical CO2 are approached as non-thermal technologies. Finally, growing points and perspectives are highlighted.
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Affiliation(s)
- Vicente M Gómez-López
- Departamento de Ciencia y Tecnología de Alimentos, Universidad Católica de Murcia (UCAM), Guadalupe, Murcia, Spain
| | - Gianpiero Pataro
- Department of Industrial Engineering, University of Salerno, Fisciano, SA, Italy
| | - Brijesh Tiwari
- Food Biosciences Department, Teagasc Food Research Centre, Dublin, Ireland
| | - Mario Gozzi
- Catelli Food Technology Group; CFT S.p.A., Parma, Italy
| | - María Ángela A Meireles
- Department of Chemical Engineering, Institute of Environmental, Chemical and Pharmaceutical Sciences, Universidade Federal de São Paulo, Diadema, SP, Brazil
| | - Shaojin Wang
- College of Mechanical and Electronic Engineering, Northwest A&F University, Yangling, Shaanxi, China
| | - Buenaventura Guamis
- Centre d'Innovació, Recerca i Transferència en Tecnologia dels Aliments (CIRTTA), TECNIO, XaRTA, Departament de Ciència Animal i dels Aliments, Facultat de Veterinària, Universitat Autònoma de Barcelona, Bellaterra, Spain
| | - Zhongli Pan
- Department of Biological and Agricultural Engineering, University of California, Davis, California, USA
| | - Hosahalli Ramaswamy
- Department of Food Science and Agricultural Chemistry, McGill University, Macdonald Campus, Montreal, Quebec, Canada
| | - Sudhir Sastry
- Department of Food, Agricultural and Biological Engineering, The Ohio State University, Columbus, Ohio, USA
| | | | - Patrick J Cullen
- School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, NSW, Australia
| | - Sriram K Vidyarthi
- Department of Biological and Agricultural Engineering, University of California, Davis, California, USA
| | - Bo Ling
- College of Mechanical and Electronic Engineering, Northwest A&F University, Yangling, Shaanxi, China
| | - Joan Miquel Quevedo
- SPTA-Servei Planta Tecnologia Aliments, Universitat Autònoma de Barcelona, Bellaterra, Barcelona, Spain
| | | | - Giuseppe Vignali
- Department of Engineering and Architecture, University of Parma, Parma, Italy
| | - Priscilla C Veggi
- Department of Food Engineering, School of Food Engineering, University of Campinas (UNICAMP), Campinas, SP, Brazil
| | - Ramon Gervilla
- SPTA-Servei Planta Tecnologia Aliments, Universitat Autònoma de Barcelona, Bellaterra, Barcelona, Spain
| | | | | | - Juliane Viganó
- Department of Food Engineering, School of Food Engineering, University of Campinas (UNICAMP), Campinas, SP, Brazil
| | - Antonio Morata
- Dept. Química y Tecnología de Alimentos, ETSIAAB, Universidad Politécnica de Madrid, Madrid, Spain
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Li YT, Chen MS, Deng LZ, Liang YZ, Liu YK, Liu W, Chen J, Liu CM. Whole soybean milk produced by a novel industry-scale micofluidizer system without soaking and filtering. J FOOD ENG 2021. [DOI: 10.1016/j.jfoodeng.2020.110228] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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19
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Kumar A, Badgujar PC, Mishra V, Sehrawat R, Babar OA, Upadhyay A. Effect of microfluidization on cholesterol, thermal properties and in vitro and in vivo protein digestibility of milk. Lebensm Wiss Technol 2019. [DOI: 10.1016/j.lwt.2019.108523] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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20
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Van Hekken DL, Iandola S, Tomasula PM. Short communication: Volatiles in microfluidized raw and heat-treated milk. J Dairy Sci 2019; 102:8819-8824. [PMID: 31378497 DOI: 10.3168/jds.2018-15776] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Accepted: 06/04/2019] [Indexed: 11/19/2022]
Abstract
As innovative processing equipment is introduced to milk processing, it is essential to determine its effect on milk aroma, a critical factor in consumer acceptance of the final dairy product. Microfluidization is known to cause severe high-pressure homogenization of milk fat and, although severe processing is known to release undesired aromas, no information is available on the levels of the volatile compounds in milk immediately after microfluidization. We hypothesized that microfluidization would alter levels of volatile compounds in milk that may affect aroma. The concentration of 11 selected volatile compounds in raw, thermized, pasteurized, and UHT 3.0% fat milk samples were compared before and after microfluidization at 170 MPa and common 2-stage homogenization at 15 MPa. Overall, the different milk samples had similar trends in response to homogenization, although UHT milk started with lower values of nonanoic acid, and acetone and higher levels of hexanal and heptanol. In many cases, microfluidization did not significantly alter volatile levels compared with the starting milk. Heptanal was the only compound observed to increase in thermized and UHT milk, whereas nonanoic acid and acetone decreased in raw, thermized, and pasteurized milks and octanoic acid decreased in thermized and UHT milks. The highest levels of almost all of the volatiles were found in the 2-stage homogenized milk. Overall, microfluidization had minimal effect on the volatile compound profiles of milk, although sensory evaluation is needed to confirm effects on aroma and flavor.
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Affiliation(s)
- D L Van Hekken
- Dairy and Functional Foods Research Unit, Agricultural Research Service, USDA, Wyndmoor, PA 19038
| | - S Iandola
- Dairy and Functional Foods Research Unit, Agricultural Research Service, USDA, Wyndmoor, PA 19038
| | - P M Tomasula
- Dairy and Functional Foods Research Unit, Agricultural Research Service, USDA, Wyndmoor, PA 19038.
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Van Hekken DL, Renye J, Bucci AJ, Tomasula PM. Characterization of the physical, microbiological, and chemical properties of sonicated raw bovine milk. J Dairy Sci 2019; 102:6928-6942. [PMID: 31202661 DOI: 10.3168/jds.2018-15775] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Accepted: 12/23/2018] [Indexed: 11/19/2022]
Abstract
Innovative processing technologies, such as ultrasonication, can change the properties of milk, allowing for the improvement or development of dairy foods. Yet taking bench-scale equipment to pilot plant scale has been challenging. Raw milk, standardized to 3% fat and warmed to inlet temperatures of 42 or 54°C, was exposed to continuous, high-intensity, low-frequency ultrasonication (16/20 kHz, 1.36 kW/pass) at flow rates of 0.15, 0.30, and 0.45 L/min that resulted in resident times within the reaction cell of 6, 3, and 2 min per pass, respectively. Multiple passes (3, 5, and 7, respectively) were required to obtain a total exposure time of 14 to 18 min. Evaluation of fat droplet sizes, enzyme coagulation properties, and microstructure of milk and milk gels, as well as determining compositional and lipid properties, were conducted to determine the potential of the ultrasound system to effectively modify milk. Laser scanning particle sizing and confocal microscopy showed that the largest droplets (2.26 ± 0.13 µm) found in raw milk were selectively reduced in size with a concomitant increase in the number of submicron droplets (0.37 ± 0.06 µm), which occurred sooner when exposed to shorter bursts of ultrasonication (0.45 L/min flow rates) and at an inlet temperature of 54°C. Ultrasound processing with milk entering at 42°C resulted in faster gelling times and firmer curds at 30 min; however, extended processing at inlet temperature of 54°C reduced curd firmness and lengthened coagulation time. This showed that ultrasonication altered protein-protein and protein-lipid interactions, thus the strength of the enzyme-set curds. Scanning electron microscopy revealed a denser curd matrix with less continuous and more irregular shaped and clustered strands, whereas transmission electron microscopy showed submicron lipid droplets embedded within the protein strands of the curd matrix. Processing at inlet temperature of 54°C with flow rates of 0.30 and 0.45 L/min also reduced the total aerobic bacterial count by more than 1 log cfu/mL, and the number of psychrophiles below the limit of detection (10 cfu/mL) for this study. Ultrasonication exposures of 14 to 18 min had minimal effect on the milk composition, fatty acid profiles, and lipid heat capacity and enthalpy. The findings show that this continuous ultrasound system, which is conducive to commercial scale-up, modifies the physical and functional properties of milk under the parameters used in this study and has potential use in dairy processing.
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Affiliation(s)
- D L Van Hekken
- Dairy & Functional Foods Research Unit, Eastern Regional Research Center, Agricultural Research Service, USDA, Wyndmoor, PA 19038
| | - J Renye
- Dairy & Functional Foods Research Unit, Eastern Regional Research Center, Agricultural Research Service, USDA, Wyndmoor, PA 19038
| | - A J Bucci
- Dairy & Functional Foods Research Unit, Eastern Regional Research Center, Agricultural Research Service, USDA, Wyndmoor, PA 19038
| | - P M Tomasula
- Dairy & Functional Foods Research Unit, Eastern Regional Research Center, Agricultural Research Service, USDA, Wyndmoor, PA 19038.
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Jo Y, Choi M, Chun J. Effect of high‐energy emulsification on properties of commercial low‐temperature pasteurised milk. INT J DAIRY TECHNOL 2019. [DOI: 10.1111/1471-0307.12596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Yeon‐Ji Jo
- Department of Agricultural, Food and Nutritional Science University of Alberta Alberta T6G 2P5 Canada
| | - Mi‐Jung Choi
- Department of Food Science and Biotechnology of Animal Resources Konkuk University Seoul 05029Korea
| | - Ji‐Yeon Chun
- Department of Food Bioengineering Jeju National University Jeju 63243 South Korea
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Castaneda N, Lee Y. Microstructure of a Model Fresh Cheese and Bioaccessibility of Vitamin D₃ Using In Vitro Digestion. Gels 2019; 5:E16. [PMID: 30857356 PMCID: PMC6473692 DOI: 10.3390/gels5010016] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Revised: 03/04/2019] [Accepted: 03/05/2019] [Indexed: 11/16/2022] Open
Abstract
In this study, the effect of a composition (protein to fat (P/F) ratio) and a processing condition (homogenization pressure for emulsification of cheese milk) on the texture, microstructure, and bioaccessibility of vitamin D₃ of a model acid coagulated fresh cheese was evaluated. It was hypothesized that increasing P/F ratios (0.9, 1.3, 1.7, and 2) and homogenization pressures (17, 50, 75, and 150 MPa) will decrease the particle size of the cheese milk emulsion. The decreased emulsion particle size will result in a more rigid and elastic cheese matrix with smaller pore sizes, with an increased interfacial surface area of fat particles, which will then improve the bioaccessibility of vitamin D₃. The P/F ratio exhibited a positive impact on the texture in a large deformation analysis. On the other hand, the effect of the P/F ratio and homogenization pressure was not significant on rheological properties of the cheese using a small deformation by means of a frequency sweep test, nor the porosity determined by environmental scanning electron microscopy (ESEM). These results suggested that the modification of the microstructure of acid coagulated fresh cheeses required other variables than P/F ratio and homogenization pressure probably due to a compression step after curd formation. Interestingly, the bioaccessibility of vitamin D₃ measured by in vitro digestion was reduced as P/F ratio and homogenization pressure increased, which may indicate a reinforced protein⁻protein interaction that affected protein hydrolysis.
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Affiliation(s)
- Nuria Castaneda
- Department of Food Science and Human Nutrition, University of Illinois, Urbana-Champaign, Champaign, IL 61801, USA.
| | - Youngsoo Lee
- Department of Food Science and Human Nutrition, University of Illinois, Urbana-Champaign, Champaign, IL 61801, USA.
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