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Dewantier GR, Torley PJ, Blanch EW. Identifying Chemical Differences in Cheddar Cheese Based on Maturity Level and Manufacturer Using Vibrational Spectroscopy and Chemometrics. Molecules 2023; 28:8051. [PMID: 38138541 PMCID: PMC10745544 DOI: 10.3390/molecules28248051] [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: 10/23/2023] [Revised: 12/03/2023] [Accepted: 12/07/2023] [Indexed: 12/24/2023] Open
Abstract
Cheese is a nutritious dairy product and a valuable commodity. Internationally, cheddar cheese is produced and consumed in large quantities, and it is the main cheese variety that is exported from Australia. Despite its importance, the analytical methods to that are used to determine cheese quality rely on traditional approaches that require time, are invasive, and which involve potentially hazardous chemicals. In contrast, spectroscopic techniques can rapidly provide molecular information and are non-destructive, fast, and chemical-free methods. Combined with partner recognition methods (chemometrics), they can identify small changes in the composition or condition of cheeses. In this work, we combined FTIR and Raman spectroscopies with principal component analysis (PCA) to investigate the effects of aging in commercial cheddar cheeses. Changes in the amide I and II bands were the main spectral characteristics responsible for classifying commercial cheddar cheeses based on the ripening time and manufacturer using FTIR, and bands from lipids, including β'-polymorph of fat crystals, were more clearly determined through changes in the Raman spectra.
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Affiliation(s)
- Gerson R. Dewantier
- Applied Chemistry and Environmental Science, School of Science, Royal Melbourne Institute of Technology University, Melbourne, VIC 3001, Australia;
| | - Peter J. Torley
- Biosciences and Food Technology, School of Science, Royal Melbourne Institute of Technology University, Bundoora, VIC 3083, Australia;
| | - Ewan W. Blanch
- Applied Chemistry and Environmental Science, School of Science, Royal Melbourne Institute of Technology University, Melbourne, VIC 3001, Australia;
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2
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Abstract
Microscopy is often used to assist the development of cheese products, but manufacturers can benefit from a much broader application of these techniques to assess structure formation during processing and structural changes during storage. Microscopy can be used to benchmark processes, optimize process variables, and identify critical control points for process control. Microscopy can also assist the reverse engineering of desired product properties and help troubleshoot production problems to improve cheese quality. This approach can be extended using quantitative analysis, which enables further comparisons between structural features and functional measures used within industry, such as cheese meltability, shreddability, and stretchability, potentially allowing prediction and control of these properties. This review covers advances in the analysis of cheese microstructure, including new techniques, and outlines how these can be applied to understand and improve cheese manufacture.
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Affiliation(s)
- Lydia Ong
- Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Parkville, Victoria, Australia; .,Dairy Innovation Hub, Department of Chemical Engineering, The University of Melbourne, Parkville, Victoria, Australia
| | - Xu Li
- Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Parkville, Victoria, Australia;
| | - Adabelle Ong
- Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Parkville, Victoria, Australia; .,Dairy Innovation Hub, Department of Chemical Engineering, The University of Melbourne, Parkville, Victoria, Australia
| | - Sally L Gras
- Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Parkville, Victoria, Australia; .,Dairy Innovation Hub, Department of Chemical Engineering, The University of Melbourne, Parkville, Victoria, Australia
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3
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Bagel A, Sergentet D. Shiga Toxin-Producing Escherichia coli and Milk Fat Globules. Microorganisms 2022; 10:microorganisms10030496. [PMID: 35336072 PMCID: PMC8953591 DOI: 10.3390/microorganisms10030496] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 02/09/2022] [Accepted: 02/17/2022] [Indexed: 02/04/2023] Open
Abstract
Shiga toxin-producing Escherichia coli (STEC) are zoonotic Gram-negative bacteria. While raw milk cheese consumption is healthful, contamination with pathogens such as STEC can occur due to poor hygiene practices at the farm level. STEC infections cause mild to serious symptoms in humans. The raw milk cheese-making process concentrates certain milk macromolecules such as proteins and milk fat globules (MFGs), allowing the intrinsic beneficial and pathogenic microflora to continue to thrive. MFGs are surrounded by a biological membrane, the milk fat globule membrane (MFGM), which has a globally positive health effect, including inhibition of pathogen adhesion. In this review, we provide an update on the adhesion between STEC and raw MFGs and highlight the consequences of this interaction in terms of food safety, pathogen detection, and therapeutic development.
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Affiliation(s)
- Arthur Bagel
- ‘Bacterial Opportunistic Pathogens and Environment’ Research Team, Université de Lyon, UMR5557 Ecologie Microbienne Lyon, CNRS (National Center of Scientific Research), VetAgro Sup, Marcy-l’Etoile, 69280 Lyon, France;
| | - Delphine Sergentet
- ‘Bacterial Opportunistic Pathogens and Environment’ Research Team, Université de Lyon, UMR5557 Ecologie Microbienne Lyon, CNRS (National Center of Scientific Research), VetAgro Sup, Marcy-l’Etoile, 69280 Lyon, France;
- Laboratoire d’Etudes des Microorganismes Alimentaires Pathogènes-French National Reference Laboratory for Escherichia coli Including Shiga Toxin-Producing E. coli (NRL-STEC), VetAgro Sup—Campus Vétérinaire, Université de Lyon, Marcy-l’Etoile, 69280 Lyon, France
- Correspondence:
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4
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Katsara K, Kenanakis G, Viskadourakis Z, Papadakis VM. Polyethylene Migration from Food Packaging on Cheese Detected by Raman and Infrared (ATR/FT-IR) Spectroscopy. MATERIALS 2021; 14:ma14143872. [PMID: 34300791 PMCID: PMC8303366 DOI: 10.3390/ma14143872] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 07/01/2021] [Accepted: 07/06/2021] [Indexed: 11/16/2022]
Abstract
For multiple years, food packaging migration has been a major concern in food and health sciences. Plastics, such as polyethylene, are continuously utilized in food packaging for preservation and easy handling purposes during transportation and storage. In this work, three types of cheese, Edam, Kefalotyri and Parmesan, of different hardness were studied under two complementary vibrational spectroscopy methods, ATR-FTIR and Raman spectroscopy, to determine the migration of low-density polyethylene from plastic packaging to the surface of cheese samples. The experimental duration of this study was set to 28 days due to the degradation time of the selected cheese samples, which is clearly visible after 1 month in refrigerated conditions at 4 °C. Raman and ATR-FTIR measurements were performed at a 4–3–4–3 day pattern to obtain comparative results. Initially, consistency/repeatability measurement tests were performed on Day0 for each sample of all cheese specimens to understand if there is any overlap between the characteristic Raman and ATR-FTIR peaks of the cheese with the ones from the low-density polyethylene package. We provide evidence that on Day14, peaks of low-density polyethylene appeared due to polymeric migration in all three cheese types we tested. In all cheese samples, microbial outgrowth started to develop after Day21, as observed visually and under the bright-field microscope, causing peak reverse. Food packaging migration was validated using two different approaches of vibrational spectroscopy (Raman and FT-IR), revealing that cheese needs to be consumed within a short time frame in refrigerated conditions at 4 °C.
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Affiliation(s)
- Klytaimnistra Katsara
- Institute of Molecular Biology and Biotechnology, Foundation for Research and Technology-Hellas, N. Plastira 100, GR-70013 Heraklion, Greece;
| | - George Kenanakis
- Institute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas, N. Plastira 100, GR-70013 Heraklion, Greece; (G.K.); (Z.V.)
| | - Zacharias Viskadourakis
- Institute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas, N. Plastira 100, GR-70013 Heraklion, Greece; (G.K.); (Z.V.)
| | - Vassilis M. Papadakis
- Institute of Molecular Biology and Biotechnology, Foundation for Research and Technology-Hellas, N. Plastira 100, GR-70013 Heraklion, Greece;
- Correspondence: ; Tel.: +30-281-03-912-67
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5
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Giha V, Ordoñez MJ, Villamil RA. How does milk fat replacement influence cheese analogue microstructure, rheology, and texture profile? J Food Sci 2021; 86:2802-2815. [PMID: 34146414 DOI: 10.1111/1750-3841.15799] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Revised: 05/07/2021] [Accepted: 05/09/2021] [Indexed: 12/19/2022]
Abstract
Over the past few years, the market for cheese substitutes has been growing on account of the simple and cost-effective production of these cheese-like products. It is well established that the functional properties of cheeses are directly related to their composition. Therefore, the variation of fat in cheese substitutes certainly affects the characteristics of the cheeses. The purpose of this review was to summarize the latest research on the effects of milk fat replacement with vegetable oils on the rheological, textural, and microstructural properties of cheese analogues. The findings suggest that the primary effects of modifying fat in cheese analogues are associated with an alteration in the interactions among the components of the protein matrix, which varies because of milk fat extraction. Overall, changes in the functional properties of analogous cheeses will depend on the type of oil, the percentage of fat modification, and the type of cheese produced.
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Affiliation(s)
- Valeria Giha
- Science Faculty, Pontificia Universidad Javeriana, Bogotá, Colombia
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6
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Alinovi M, Mucchetti G, Andersen U, Rovers TAM, Mikkelsen B, Wiking L, Corredig M. Applicability of Confocal Raman Microscopy to Observe Microstructural Modifications of Cream Cheeses as Influenced by Freezing. Foods 2020; 9:E679. [PMID: 32466185 PMCID: PMC7278691 DOI: 10.3390/foods9050679] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 05/21/2020] [Accepted: 05/22/2020] [Indexed: 11/16/2022] Open
Abstract
Confocal Raman microscopy is a promising technique to derive information about microstructure, with minimal sample disruption. Raman emission bands are highly specific to molecular structure and with Raman spectroscopy it is thus possible to observe different classes of molecules in situ, in complex food matrices, without employing fluorescent dyes. In this work confocal Raman microscopy was employed to observe microstructural changes occurring after freezing and thawing in high-moisture cheeses, and the observations were compared to those obtained with confocal laser scanning microscopy. Two commercially available cream cheese products were imaged with both microscopy techniques. The lower resolution (1 µm/pixel) of confocal Raman microscopy prevented the observation of particles smaller than 1 µm that may be part of the structure (e.g., sugars). With confocal Raman microscopy it was possible to identify and map the large water domains formed during freezing and thawing in high-moisture cream cheese. The results were supported also by low resolution NMR analysis. NMR and Raman microscopy are complementary techniques that can be employed to distinguish between the two different commercial formulations, and different destabilization levels.
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Affiliation(s)
- Marcello Alinovi
- Food and Drug, University of Parma, Parco Area delle Scienze, 47/A 43124 Parma, Italy;
| | - Germano Mucchetti
- Food and Drug, University of Parma, Parco Area delle Scienze, 47/A 43124 Parma, Italy;
| | - Ulf Andersen
- Arla Innovation Centre, Arla Foods, Agro Food Park 19, 8200 Aarhus, Denmark; (U.A.); (T.A.M.R.); (B.M.)
| | - Tijs A. M. Rovers
- Arla Innovation Centre, Arla Foods, Agro Food Park 19, 8200 Aarhus, Denmark; (U.A.); (T.A.M.R.); (B.M.)
| | - Betina Mikkelsen
- Arla Innovation Centre, Arla Foods, Agro Food Park 19, 8200 Aarhus, Denmark; (U.A.); (T.A.M.R.); (B.M.)
| | - Lars Wiking
- Department of Food Science and iFOOD Center for Innovative Food, Aarhus University, Agro Food Park 48, 8200 Aarhus, Denmark; (L.W.); (M.C.)
| | - Milena Corredig
- Department of Food Science and iFOOD Center for Innovative Food, Aarhus University, Agro Food Park 48, 8200 Aarhus, Denmark; (L.W.); (M.C.)
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7
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Sharma P, Segat A, Kelly AL, Sheehan JJ. Colorants in cheese manufacture: Production, chemistry, interactions, and regulation. Compr Rev Food Sci Food Saf 2019; 19:1220-1242. [PMID: 33337089 DOI: 10.1111/1541-4337.12519] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Revised: 10/29/2019] [Accepted: 11/14/2019] [Indexed: 12/27/2022]
Abstract
Colored Cheddar cheeses are prepared by adding an aqueous annatto extract (norbixin) to cheese milk; however, a considerable proportion (∼20%) of such colorant is transferred to whey, which can limit the end use applications of whey products. Different geographical regions have adopted various strategies for handling whey derived from colored cheeses production. For example, in the United States, whey products are treated with oxidizing agents such as hydrogen peroxide and benzoyl peroxide to obtain white and colorless spray-dried products; however, chemical bleaching of whey is prohibited in Europe and China. Fundamental studies have focused on understanding the interactions between colorants molecules and various components of cheese. In addition, the selective delivery of colorants to the cheese curd through approaches such as encapsulated norbixin and microcapsules of bixin or use of alternative colorants, including fat-soluble/emulsified versions of annatto or beta-carotene, has been studied. This review provides a critical analysis of pertinent scientific and patent literature pertaining to colorant delivery in cheese and various types of colorant products on the market for cheese manufacture, and also considers interactions between colorant molecules and cheese components; various strategies for elimination of color transfer to whey during cheese manufacture are also discussed.
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Affiliation(s)
- Prateek Sharma
- Department of Food Chemistry and Technology, Teagasc Food Research Centre Moorepark, Fermoy, Ireland.,Dairy Processing Technology Centre (DPTC), Limerick, Ireland
| | - Annalisa Segat
- Department of Food Chemistry and Technology, Teagasc Food Research Centre Moorepark, Fermoy, Ireland.,Dairy Processing Technology Centre (DPTC), Limerick, Ireland
| | - Alan L Kelly
- School of Food and Nutritional Sciences, University College Cork, Cork, Ireland
| | - Jeremiah J Sheehan
- Department of Food Chemistry and Technology, Teagasc Food Research Centre Moorepark, Fermoy, Ireland.,Dairy Processing Technology Centre (DPTC), Limerick, Ireland
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8
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Hickey CD, Diehl BWK, Nuzzo M, Millqvist-Feurby A, Wilkinson MG, Sheehan JJ. Influence of buttermilk powder or buttermilk addition on phospholipid content, chemical and bio-chemical composition and bacterial viability in Cheddar style-cheese. Food Res Int 2017; 102:748-758. [PMID: 29196008 DOI: 10.1016/j.foodres.2017.09.067] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Revised: 08/31/2017] [Accepted: 09/24/2017] [Indexed: 11/27/2022]
Abstract
The effect of buttermilk powder addition post-curd formation or buttermilk addition to cheese milk on total and individual phospholipid content, chemical composition, enzyme activity, microbial populations and microstructure within Cheddar-style cheese was investigated. Buttermilk or buttermilk powder addition resulted in significant increases in total phospholipid content and their distribution throughout the cheese matrix. Addition of 10% buttermilk powder resulted in higher phospholipid content, moisture, pH and salt in moisture levels, and lower fat, fat in dry matter, L. helveticus and non-starter bacteria levels in cheeses. Buttermilk powder inclusion resulted in lower pH4.6/Soluble Nitrogen (SN) levels and significantly lower free amino acid levels in 10% buttermilk powder cheeses. Buttermilk addition provided a more porous cheese microstructure with greater fat globule coalescence and increased free fat pools, while also increasing moisture and decreasing protein, fat and pH levels. Addition of buttermilk in liquid or powdered form offers potential for new cheeses with associated health benefits.
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Affiliation(s)
- C D Hickey
- Teagasc Food Research Centre, Moorepark, Fermoy, Co. Cork, Ireland; University of Limerick, Castletroy, Limerick, Ireland.
| | - B W K Diehl
- Spectral service AG, Emil-Hoffmann-Straße 33, 50996 Köln, Germany.
| | - M Nuzzo
- RISE-Research Institutes of Sweden, Stockholm, Sweden
| | | | - M G Wilkinson
- University of Limerick, Castletroy, Limerick, Ireland.
| | - J J Sheehan
- Teagasc Food Research Centre, Moorepark, Fermoy, Co. Cork, Ireland.
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