1
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France TC, Bot F, Kelly AL, Crowley SV, O'Mahony JA. Physicochemical properties of micellar casein retentates generated at different microfiltration temperatures. J Dairy Sci 2024; 107:2721-2732. [PMID: 38101742 DOI: 10.3168/jds.2023-23918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Accepted: 11/18/2023] [Indexed: 12/17/2023]
Abstract
Processing temperature has a significant influence on the composition and functionality of the resulting streams following microfiltration (MF) of skim milk. In this study, MF and diafiltration (DF) were performed at 4 or 50°C to produce β-casein (β-CN)-depleted and nondepleted (i.e., native casein profile) micellar casein isolate retentates, respectively. Microfiltration combined with extensive DF resulted in a 40% depletion of β-CN at 4°C, whereas no β-CN depletion occurred at 50°C. Microfiltration at 4°C led to higher transmission of calcium into permeates, with retentate generated at 4°C containing less total calcium compared with retentate generated at 50°C, based on the volume of retentate remaining. Higher heat stability at 120°C was measured for retentates generated at 4°C compared with those at 50°C, across all pH values measured. Retentates generated at 4°C also had significantly lower ionic calcium values at each pH compared with those generated at 50°C. Higher apparent viscosities at 4°C were measured for retentates generated at 4°C compared with retentates generated at 50°C, likely due to increased voluminosity of β-CN-depleted casein micelles. The results of this study provide new information on how changing the composition of MF retentate, by appropriate control of processing temperature and DF, can alter physicochemical properties of casein micelles, with potential implications for ingredient functionality.
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Affiliation(s)
- Thomas C France
- School of Food and Nutritional Sciences, University College Cork, Cork T12 Y337, Ireland
| | - Francesca Bot
- Department of Food and Drug, University of Parma, 43124 Parma, Italy
| | - Alan L Kelly
- School of Food and Nutritional Sciences, University College Cork, Cork T12 Y337, Ireland
| | - Shane V Crowley
- School of Food and Nutritional Sciences, University College Cork, Cork T12 Y337, Ireland
| | - James A O'Mahony
- School of Food and Nutritional Sciences, University College Cork, Cork T12 Y337, Ireland.
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2
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Gai N, Uniacke-Lowe T, O'Regan J, Goulding DA, Kelly AL. Influence of β-casein genotype on physicochemical properties and functionality of bovine milk. J Dairy Sci 2023; 106:8357-8367. [PMID: 37641250 DOI: 10.3168/jds.2023-23687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Accepted: 07/02/2023] [Indexed: 08/31/2023]
Abstract
Several studies have been focused on the effect of milk protein genetic variants on milk physicochemical properties and functionality in recent years. β-casein, an important protein related to milk processibility, has been reported to have 2 main genetic variants A1 and A2, for which cows may be homozygous or heterozygous. In this study, several physicochemical properties of milk with β-casein variants A1A1, A1A2, and A2A2 from 3 collection occasions were analyzed. Higher manganese content and lower pH were found to be associated with the A1A1 variant compared with the other 2 genotypes. Better rennet and acid coagulation were found in A1A1 milk compared with A1A2 and A2A2 milk (although P > 0.05), whereas A2A2 milk was more stable to creaming compared with the other 2 genotypes, which may be linked to its smaller fat globule size. Thus, milk from cows with A1A1 genotype could be preferable for cheese making, while that with A2A2 variant can be used in formulations requiring good stability against creaming, and for example, yogurt making, where the softer yogurt texture may be easier to digest.
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Affiliation(s)
- N Gai
- School of Food and Nutritional Sciences, University College Cork, Cork, T12 YN60, Ireland
| | - T Uniacke-Lowe
- School of Food and Nutritional Sciences, University College Cork, Cork, T12 YN60, Ireland
| | - J O'Regan
- Nestlé Development Centre Nutrition, Wyeth Nutritionals Ireland, Askeaton, Co. Limerick, V94 E7P9, Ireland
| | - D A Goulding
- Nestlé Development Centre Nutrition, Wyeth Nutritionals Ireland, Askeaton, Co. Limerick, V94 E7P9, Ireland
| | - A L Kelly
- School of Food and Nutritional Sciences, University College Cork, Cork, T12 YN60, Ireland.
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3
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Digvijay, Kelly AL, Lamichhane P. Ice crystallization and structural changes in cheese during freezing and frozen storage: implications for functional properties. Crit Rev Food Sci Nutr 2023:1-24. [PMID: 37971852 DOI: 10.1080/10408398.2023.2277357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2023]
Abstract
Temperature-mediated preservation techniques offer a simple, scalable, effective, and fairly efficient method of long-term storage of food products. In order to ensure the uninterrupted availability of cheese across the globe, a critical understanding of its techno-functional properties as affected by freezing and frozen storage is essential. Detailed studies of temperature-mediated molecular dynamics are available for relatively simpler and homogeneous systems like pure water, proteins, and carbohydrates. However, for heterogeneous systems like cheese, inter-component interactions at sub-zero temperatures have not been extensively covered. Ice crystallization during freezing causes dehydration of caseins and the formation of concentration gradients within the cheese matrix, causing undesirable changes in texture-functional attributes, but findings vary due to experimental conditions. A suitable combination of sample size, freezing rate, aging, and tempering can extend the shelf life of high- and low-moisture Mozzarella cheese. However, limited studies on other cheeses suggest that effects and suitability differ by cheese type, in most cases adversely affecting texture and functional attributes. This review presents an overview of the understanding of the effects of refrigeration, freezing techniques, and frozen storage on structural components of cheese, most prominently Mozzarella cheese, and the corresponding impact on microstructure and functionality. Also included are the mechanism of ice formation and relevant mathematical models for estimation of the thermophysical properties of cheese to assist in designing optimized schemes for their frozen storage. The review also highlights the lack of unanimity in critical understanding concerning the effect of freezing on the long-term storage of Mozzarella cheese with respect to its functionality.
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Affiliation(s)
- Digvijay
- Department of Food Chemistry and Technology, Teagasc Food Research Center, Fermoy, Cork, Ireland
- School of Food and Nutritional Sciences, University College Cork, Cork, Ireland
| | - Alan L Kelly
- School of Food and Nutritional Sciences, University College Cork, Cork, Ireland
| | - Prabin Lamichhane
- Department of Food Chemistry and Technology, Teagasc Food Research Center, Fermoy, Cork, Ireland
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4
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Zhu Y, Hamill RM, Mullen AM, Kelly AL, Gagaoua M. Molecular mechanisms contributing to the development of beef sensory texture and flavour traits and related biomarkers: Insights from early post-mortem muscle using label-free proteomics. J Proteomics 2023; 286:104953. [PMID: 37390894 DOI: 10.1016/j.jprot.2023.104953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 06/12/2023] [Accepted: 06/14/2023] [Indexed: 07/02/2023]
Abstract
Beef sensory quality comprises a suite of traits, each of which manifests its ultimate phenotype through interaction of muscle physiology with environment, both in vivo and post-mortem. Understanding variability in meat quality remains a persistent challenge, but omics studies to uncover biological connections between natural variability in proteome and phenotype could provide validation for exploratory studies and offer new insights. Multivariate analysis of proteome and meat quality data from Longissimus thoracis et lumborum muscle samples taken early post-mortem from 34 Limousin-sired bulls was conducted. Using for the first-time label-free shotgun proteomics combined with liquid chromatography-tandem mass spectrometry (LC-MS/MS), 85 proteins were found to be related with tenderness, chewiness, stringiness and flavour sensory traits. The putative biomarkers were classified in five interconnected biological pathways; i) muscle contraction, ii) energy metabolism, iii) heat shock proteins, iv) oxidative stress, v) regulation of cellular processes and binding. Among the proteins, PHKA1 and STBD1 correlated with all four traits, as did the GO biological process 'generation of precursor metabolites and energy'. Optimal regression models explained a high level (58-71%) of phenotypic variability with proteomic data for each quality trait. The results of this study propose several regression equations and biomarkers to explain the variability of multiple beef eating quality traits. Thanks to annotation and network analyses, they further suggest protein interactions and mechanisms underpinning the physiological processes regulating these key quality traits. SIGNIFICANCE: The proteomic profiles of animals with divergent quality profiles have been compared in numerous studies; however, a wide range of phenotypic variation is required to better understand the mechanisms underpinning the complex biological pathways correlated with beef quality and protein interactions. We used multivariate regression analyses and bioinformatics to analyse shotgun proteomics data to decipher the molecular signatures involved in beef texture and flavour variations with a focus on multiple quality traits. We developed multiple regression equations to explain beef texture and flavour. Additionally, potential candidate biomarkers correlated with multiple beef quality traits are suggested, which could have utility as indicators of beef overall sensory quality. This study explained the biological process responsible for determining key quality traits such as tenderness, chewiness, stringiness, and flavour in beef, which will provide support for future beef proteomics studies.
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Affiliation(s)
- Yao Zhu
- Food Quality and Sensory Science Department, Teagasc Ashtown Food Research Centre, Ashtown, D15KN3K Dublin 15, Ireland; School of Food and Nutritional Sciences, University College Cork, Cork T12 K8AF, Ireland
| | - Ruth M Hamill
- Food Quality and Sensory Science Department, Teagasc Ashtown Food Research Centre, Ashtown, D15KN3K Dublin 15, Ireland.
| | - Anne Maria Mullen
- Food Quality and Sensory Science Department, Teagasc Ashtown Food Research Centre, Ashtown, D15KN3K Dublin 15, Ireland
| | - Alan L Kelly
- School of Food and Nutritional Sciences, University College Cork, Cork T12 K8AF, Ireland
| | - Mohammed Gagaoua
- Food Quality and Sensory Science Department, Teagasc Ashtown Food Research Centre, Ashtown, D15KN3K Dublin 15, Ireland; PEGASE, INRAE, Institut Agro, 35590 Saint-Gilles, France.
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5
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Meng F, Uniacke-Lowe T, Lanfranchi E, Meehan G, O'Shea CA, Dennehy T, Ryan AC, Stanton C, Kelly AL. A longitudinal study of fatty acid profiles, macronutrient levels, and plasmin activity in human milk. Front Nutr 2023; 10:1172613. [PMID: 37229467 PMCID: PMC10203173 DOI: 10.3389/fnut.2023.1172613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Accepted: 04/11/2023] [Indexed: 05/27/2023] Open
Abstract
Introduction Human milk provides nutrients essential for infant growth and health, levels of which are dynamic during lactation. Methods In this study, changes in macronutrients, fatty acids, and plasmin activities over the first six months of lactation in term milk were studied. Results There was a significant influence of lactation stage on levels of protein and plasmin activities, but not on levels of fat and carbohydrate in term milk. Concerning fatty acids in term milk, levels of caproic acid and α-linolenic acid increased significantly (p < 0.05), whereas those of arachidonic acid and docosahexaenoic acid decreased, in the six months after birth. Significant impacts of maternal pre-pregnancy BMI and infant gender on fatty acid profiles were also found. Multivariate statistical analysis showed that protein level, plasmin activity, and several fatty acids (α-linolenic acid, lignoceric acid, and docasadienoic acid) contributed strongly to discrimination of milk from different lactational stages. Discussion The study demonstrates that not all but some fatty acids were influenced by lactation, whereas protein and protease levels showed clear decreasing trends during lactation, which may help in understanding the nutritional requirements of infants.
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Affiliation(s)
- Fanyu Meng
- School of Food and Nutritional Sciences, University College Cork, Cork, Ireland
| | | | - Elisa Lanfranchi
- School of Food and Nutritional Sciences, University College Cork, Cork, Ireland
| | - Grainne Meehan
- Department of Neonatology, Cork University Maternity Hospital, Cork, Ireland
| | - Carol-Anne O'Shea
- Department of Neonatology, Cork University Maternity Hospital, Cork, Ireland
| | - Theresa Dennehy
- School of Food and Nutritional Sciences, University College Cork, Cork, Ireland
| | - Anthony C. Ryan
- Brookfield School of Medicine and Health, University College Cork, Cork, Ireland
| | - Catherine Stanton
- Teagasc Food Research Centre, Moorepark, Cork, Ireland
- APC Microbiome, Cork, Ireland
| | - Alan L. Kelly
- School of Food and Nutritional Sciences, University College Cork, Cork, Ireland
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6
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France TC, Kelly AL, Crowley SV, O’Mahony JA. Influence of processing temperature on plasmin activity and proteolysis in process streams from cold microfiltration of skim milk. Int Dairy J 2023. [DOI: 10.1016/j.idairyj.2023.105590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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7
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Xia X, Arju G, Taivosalo A, Lints T, Kriščiunaite T, Vilu R, Corrigan BM, Gai N, Fenelon MA, Tobin JT, Kilcawley K, Kelly AL, McSweeney PL, Sheehan JJ. Effect of β-casein reduction and high heat treatment of micellar casein concentrate on proteolysis, texture and the volatile profile of resultant Emmental cheese during ripening. Int Dairy J 2022. [DOI: 10.1016/j.idairyj.2022.105540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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8
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Ouyang H, Kilcawley KN, Miao S, Fenelon MA, Kelly AL, Sheehan JJ. Effect of konjac glucomannan and soy soluble polysaccharides on the rheological, microstructural and syneretic properties of rennet gels. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2022.113905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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9
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Poulsen KO, Meng F, Lanfranchi E, Young JF, Stanton C, Ryan CA, Kelly AL, Sundekilde UK. Dynamic Changes in the Human Milk Metabolome Over 25 Weeks of Lactation. Front Nutr 2022; 9:917659. [PMID: 35911093 PMCID: PMC9331903 DOI: 10.3389/fnut.2022.917659] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 06/13/2022] [Indexed: 12/11/2022] Open
Abstract
Human milk (HM) provides essential nutrition for ensuring optimal infant growth and development postpartum. Metabolomics offers insight into the dynamic composition of HM. Studies have reported the impact of lactation stage, maternal genotype, and gestational age on HM metabolome. However, the majority of the studies have considered changes within the first month of lactation or sampled with large intervals. This leaves a gap in the knowledge of progressing variation in HM composition beyond the first month of lactation. The objective of this study was to investigate whether the HM metabolome from mothers with term deliveries varies beyond 1 month of lactation, during the period in which HM is considered fully mature. Human milk samples (n = 101) from 59 mothers were collected at weeks 1–2, 3–5, 7–9, and 20–25 postpartum and analyzed using 1H nuclear magnetic resonance spectroscopy. Several metabolites varied over lactation and exhibited dynamic changes between multiple time points. Higher levels of HM oligosaccharides, cis-aconitate, O-phosphocholine, O-acetylcarnitine, gluconate, and citric acid were observed in early lactation, whereas later in lactation, levels of lactose, 3-fucosyllactose, glutamine, glutamate, and short- and medium-chain fatty acids were increased. Notably, we demonstrate that the HM metabolome is dynamic during the period of maturity.
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Affiliation(s)
- Katrine Overgaard Poulsen
- Department of Food Science, Aarhus University, Aarhus, Denmark
- Sino-Danish Center for Education and Research, Aarhus, Denmark
- *Correspondence: Katrine Overgaard Poulsen,
| | - Fanyu Meng
- School of Food and Nutritional Sciences, University College Cork, Cork, Ireland
| | - Elisa Lanfranchi
- School of Food and Nutritional Sciences, University College Cork, Cork, Ireland
- ACIB – Austrian Centre of Industrial Biotechnology, Graz, Austria
| | | | | | - C. Anthony Ryan
- Brookfield School of Medicine and Health, University College Cork, Cork, Ireland
| | - Alan L. Kelly
- School of Food and Nutritional Sciences, University College Cork, Cork, Ireland
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10
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Meng F, Uniacke-Lowe T, Kelly AL. Factors affecting the creaming of raw bovine milk: A comparison of natural and accelerated methods. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2022.113288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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11
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Lamichhane P, Sharma P, Kelly AL, Sheehan JJ. Effect of chymosin‐induced hydrolysis of α
S1
‐casein on the tribological behaviour of brine‐salted semihard cheeses. INT J DAIRY TECHNOL 2022. [DOI: 10.1111/1471-0307.12863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Prabin Lamichhane
- Department of Food Chemistry and Technology Teagasc Food Research Centre Moorepark Cork P61C996Ireland
- School of Food and Nutritional Sciences University College Cork Cork T12YN60 Ireland
| | - Prateek Sharma
- Department of Food Chemistry and Technology Teagasc Food Research Centre Moorepark Cork P61C996Ireland
| | - Alan L Kelly
- School of Food and Nutritional Sciences University College Cork Cork T12YN60 Ireland
| | - Jeremiah J Sheehan
- Department of Food Chemistry and Technology Teagasc Food Research Centre Moorepark Cork P61C996Ireland
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12
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Lyons KE, Shea CAO, Grimaud G, Ryan CA, Dempsey E, Kelly AL, Ross RP, Stanton C. The human milk microbiome aligns with lactation stage and not birth mode. Sci Rep 2022; 12:5598. [PMID: 35379843 PMCID: PMC8979980 DOI: 10.1038/s41598-022-09009-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Accepted: 03/03/2022] [Indexed: 12/13/2022] Open
Abstract
We analysed the human milk microbiome in a cohort of 80 lactating women and followed the dynamics in taxa over the course of lactation from birth to 6 months. Two hundred and thirty one milk samples were collected from full-term lactating women at 1, 4, 8 and 24 weeks following birth and analysed for microbiota composition using 16S rRNA sequencing. A significant decrease in milk microbiota diversity was observed throughout the first 6 months of lactation, with the greatest difference seen between week 8 and week 24. Nine genera predominated in milk over lactation from week 1 to week 24, comprising of Staphylococcus, Streptococcus, Pseudomonas, Acinetobacter, Bifidobacterium, Mesorhizobium, Brevundimonas, Flavobacterium, and Rhodococcus; however, fluctuations in these core genera were apparent over time. There was a significant effect of stage of lactation on the microbiome, while no effect of birth mode, infant sex and maternal BMI was observed throughout lactation. Streptococcus had the highest mean relative abundance at week 1 and 24 (17.3% and 24% respectively), whereas Pseudomonas predominated at week 4 (22%) and week 8 (19%). Bifidobacterium and Lactobacillus had the highest mean relative abundance at week 4 (5% and 1.4% respectively), and occurred at a relative abundance of ≤ 1% at all other time points. A decrease in milk microbiota diversity throughout lactation was also observed. This study concluded that lactation stage was the primary driving factor in milk microbiota compositional changes over lactation from birth to 6 months, while mode of delivery was not a factor driving compositional changes throughout human lactation.
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13
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Lin D, Kelly AL, Miao S. The impact of pH on mechanical properties, storage stability and digestion of alginate-based and soy protein isolate-stabilized emulsion gel beads with encapsulated lycopene. Food Chem 2022; 372:131262. [PMID: 34628120 DOI: 10.1016/j.foodchem.2021.131262] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 09/24/2021] [Accepted: 09/27/2021] [Indexed: 12/16/2022]
Abstract
In alginate-based emulsion gels containing protein-coated droplets, pH can influence the gelation mechanism of alginate gels, and the interactions between alginate molecules and protein-coated droplets, and thus properties of emulsion gels. This study investigated the impact of pH 3-7 on the properties (e.g., surface structures of droplets, mechanical properties, storage stability, digestion behavior) of alginate gel beads containing soy protein isolate(SPI)-stabilized oil droplets. Emulsion droplets were SPI-coated droplets at pH 6-7 and alginate/SPI-coated droplets at pH 3-5. Emulsion droplet flocculation only occurred in emulsions at pH 7.0. Emulsion gel beads at pH 3.0 had lower mechanical strength, higher storage stability, faster release of encapsulated lycopene during in-vitro digestion, and higher bioaccesibility of lycopene after 2 h of intestinal digestion than those at pH 7.0 and 5.0. The findings of this study are crucial to emulsion gel beads with controlled release and improved storage stability of encapsulated compounds by changing the pH of emulsions.
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Affiliation(s)
- Duanquan Lin
- Teagasc Food Research Centre, Moorepark, Fermoy, Co. Cork, Ireland; School of Food and Nutritional Sciences, University College Cork, Cork, Ireland
| | - Alan L Kelly
- School of Food and Nutritional Sciences, University College Cork, Cork, Ireland
| | - Song Miao
- Teagasc Food Research Centre, Moorepark, Fermoy, Co. Cork, Ireland.
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14
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Li B, Waldron DS, Drake M, Lyne J, Kelly AL, McSweeney PL. Suitability of a novel camel (Camelus dromedarius) chymosin as a coagulant for Cheddar cheese manufacture. Int Dairy J 2022. [DOI: 10.1016/j.idairyj.2022.105346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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15
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Barone G, O'Regan J, Kelly AL, O'Mahony JA. Interactions between whey proteins and calcium salts and implications for the formulation of dairy protein‐based nutritional beverage products: A review. Compr Rev Food Sci Food Saf 2022; 21:1254-1274. [DOI: 10.1111/1541-4337.12884] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 11/20/2021] [Accepted: 11/30/2021] [Indexed: 01/29/2023]
Affiliation(s)
- Giovanni Barone
- School of Food and Nutritional Sciences University College Cork Cork Ireland
| | - Jonathan O'Regan
- Nestlé Development Centre Nutrition Wyeth Nutritionals Ireland Askeaton Limerick Ireland
| | - Alan L. Kelly
- School of Food and Nutritional Sciences University College Cork Cork Ireland
| | - James A. O'Mahony
- School of Food and Nutritional Sciences University College Cork Cork Ireland
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16
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Alehosseini A, Wall C, Segat A, Tiwari BK, Sharma P, Kelly AL, Sheehan JJ. A preliminary evaluation of the impact of pulsed electric field and high‐pressure processing treatments on mobility of norbixin molecules through rennet‐induced casein matrices. J FOOD PROCESS ENG 2021. [DOI: 10.1111/jfpe.13935] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ali Alehosseini
- Food Chemistry and Technology Department Teagasc Food Research Centre, Moorepark Fermoy Ireland
- Dairy Processing Technology Centre (DPTC) Limerick Ireland
| | - Catherine Wall
- Food Chemistry and Technology Department Teagasc Food Research Centre, Moorepark Fermoy Ireland
- Dairy Processing Technology Centre (DPTC) Limerick Ireland
| | - Annalisa Segat
- Food Chemistry and Technology Department Teagasc Food Research Centre, Moorepark Fermoy Ireland
- Dairy Processing Technology Centre (DPTC) Limerick Ireland
| | - Brijesh K. Tiwari
- Food Chemistry and Technology Department Teagasc Food Research Centre Ashtown Ireland
| | - Prateek Sharma
- Food Chemistry and Technology Department Teagasc Food Research Centre, Moorepark Fermoy Ireland
- Dairy Processing Technology Centre (DPTC) Limerick Ireland
| | - Alan L. Kelly
- Dairy Processing Technology Centre (DPTC) Limerick Ireland
- School of Food and Nutritional Sciences University College Cork Cork Ireland
| | - Jeremiah J. Sheehan
- Food Chemistry and Technology Department Teagasc Food Research Centre, Moorepark Fermoy Ireland
- Dairy Processing Technology Centre (DPTC) Limerick Ireland
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17
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McCarthy NA, Magan JB, Kelleher CM, Kelly AL, O’Mahony JA, Murphy EG. Heat treatment of milk: effect on concentrate viscosity, powder manufacture and end-product functionality. Int Dairy J 2021. [DOI: 10.1016/j.idairyj.2021.105289] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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18
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Lin D, Kelly AL, Miao S. Alginate-based emulsion micro-gel particles produced by an external/internal O/W/O emulsion-gelation method: Formation, suspension rheology, digestion, and application to gel-in-gel beads. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2021.106926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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19
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Gai N, Uniacke-Lowe T, O’Regan J, Faulkner H, Kelly AL. Effect of Protein Genotypes on Physicochemical Properties and Protein Functionality of Bovine Milk: A Review. Foods 2021; 10:2409. [PMID: 34681458 PMCID: PMC8535582 DOI: 10.3390/foods10102409] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 09/29/2021] [Accepted: 09/30/2021] [Indexed: 12/05/2022] Open
Abstract
Milk protein comprises caseins (CNs) and whey proteins, each of which has different genetic variants. Several studies have reported the frequencies of these genetic variants and the effects of variants on milk physicochemical properties and functionality. For example, the C variant and the BC haplotype of αS1-casein (αS1-CN), β-casein (β-CN) B and A1 variants, and κ-casein (κ-CN) B variant, are favourable for rennet coagulation, as well as the B variant of β-lactoglobulin (β-lg). κ-CN is reported to be the only protein influencing acid gel formation, with the AA variant contributing to a firmer acid curd. For heat stability, κ-CN B variant improves the heat resistance of milk at natural pH, and the order of heat stability between phenotypes is BB > AB > AA. The A2 variant of β-CN is more efficient in emulsion formation, but the emulsion stability is lower than the A1 and B variants. Foaming properties of milk with β-lg variant B are better than A, but the differences between β-CN A1 and A2 variants are controversial. Genetic variants of milk proteins also influence milk yield, composition, quality and processability; thus, study of such relationships offers guidance for the selection of targeted genetic variants.
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Affiliation(s)
- Nan Gai
- School of Food and Nutritional Sciences, University College Cork, T12 YN60 Cork, Ireland; (N.G.); (T.U.-L.)
| | - Therese Uniacke-Lowe
- School of Food and Nutritional Sciences, University College Cork, T12 YN60 Cork, Ireland; (N.G.); (T.U.-L.)
| | - Jonathan O’Regan
- Nestlé Development Centre Nutrition, Wyeth Nutritionals Ireland, Askeaton, Co., V94 E7P9 Limerick, Ireland; (J.O.); (H.F.)
| | - Hope Faulkner
- Nestlé Development Centre Nutrition, Wyeth Nutritionals Ireland, Askeaton, Co., V94 E7P9 Limerick, Ireland; (J.O.); (H.F.)
| | - Alan L. Kelly
- School of Food and Nutritional Sciences, University College Cork, T12 YN60 Cork, Ireland; (N.G.); (T.U.-L.)
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France TC, Kelly AL, Crowley SV, O’Mahony JA. Cold Microfiltration as an Enabler of Sustainable Dairy Protein Ingredient Innovation. Foods 2021; 10:foods10092091. [PMID: 34574201 PMCID: PMC8468473 DOI: 10.3390/foods10092091] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 08/29/2021] [Accepted: 09/01/2021] [Indexed: 11/22/2022] Open
Abstract
Classically, microfiltration (0.1–0.5 µm) of bovine skim milk is performed at warm temperatures (45–55 °C), to produce micellar casein and milk-derived whey protein ingredients. Microfiltration at these temperatures is associated with high initial permeate flux and allows for the retention of the casein fraction, resulting in a whey protein fraction of high purity. Increasingly, however, the microfiltration of skim milk and other dairy streams at low temperatures (≤20 °C) is being used in the dairy industry. The trend towards cold filtration has arisen due to associated benefits of improved microbial quality and reduced fouling, allowing for extended processing times, improved product quality and opportunities for more sustainable processing. Performing microfiltration of skim milk at low temperatures also alters the protein profile and mineral composition of the resulting processing streams, allowing for the generation of new ingredients. However, the use of low processing temperatures is associated with high mechanical energy consumption to compensate for the increased viscosity, and thermal energy consumption for inline cooling, impacting the sustainability of the process. This review will examine the differences between warm and cold microfiltration in terms of membrane performance, partitioning of bovine milk constituents, microbial growth, ingredient innovation and process sustainability.
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Zhu Y, Gagaoua M, Mullen AM, Viala D, Rai DK, Kelly AL, Sheehan D, Hamill RM. Shotgun proteomics for the preliminary identification of biomarkers of beef sensory tenderness, juiciness and chewiness from plasma and muscle of young Limousin-sired bulls. Meat Sci 2021; 176:108488. [DOI: 10.1016/j.meatsci.2021.108488] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 02/27/2021] [Accepted: 03/02/2021] [Indexed: 12/22/2022]
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Ross MM, Crowley SV, Crotty S, Oliveira J, Morrison AP, Kelly AL. Parameters affecting the printability of 3D-printed processed cheese. INNOV FOOD SCI EMERG 2021. [DOI: 10.1016/j.ifset.2021.102730] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Magan JB, O Callaghan TF, Kelly AL, McCarthy NA. Compositional and functional properties of milk and dairy products derived from cows fed pasture or concentrate-based diets. Compr Rev Food Sci Food Saf 2021; 20:2769-2800. [PMID: 33949109 DOI: 10.1111/1541-4337.12751] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 02/24/2021] [Accepted: 03/12/2021] [Indexed: 12/11/2022]
Abstract
Worldwide milk production is predominantly founded on indoor, high-concentrate feeding systems, whereas pasture-based feeding systems are most common in New Zealand and Ireland but have received greater attention recently in countries utilizing conventional systems. Consumer interest in 'pasture-fed' dairy products has also increased, arising from environmental, ethical, and nutritional concerns. A substantial body of research exists describing the effect of different feeding strategies on the composition of milk, with several recent studies focusing on the comparison of pasture- and concentrate-based feeding regimes. Significant variation is typically observed in the gross composition of milk produced from different supplemental feeds, but various changes in the discrete composition of macromolecular components in milk have also been associated with dietary influence, particularly in relation to the fatty acid profile. Changes in milk composition have also been shown to have implications for milk and dairy product processability, functionality and sensory properties. Methods to determine the traceability of dairy products or verify marketing claims such as 'pasture-fed' have also been established, based on compositional variation due to diet. This review explores the effects of feed types on milk composition and quality, along with the ultimate effect of diet-induced changes on milk and dairy product functionality, with particular emphasis placed on pasture- and concentrate-based feeding systems.
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Affiliation(s)
- Jonathan B Magan
- Food Chemistry and Technology, Teagasc Food Research Centre, Cork, Ireland.,School of Food and Nutritional Sciences, University College Cork, Cork, Ireland
| | - Tom F O Callaghan
- School of Food and Nutritional Sciences, University College Cork, Cork, Ireland
| | - Alan L Kelly
- School of Food and Nutritional Sciences, University College Cork, Cork, Ireland
| | - Noel A McCarthy
- Food Chemistry and Technology, Teagasc Food Research Centre, Cork, Ireland
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France TC, Bot F, Kelly AL, Crowley SV, O'Mahony JA. The influence of temperature on filtration performance and fouling during cold microfiltration of skim milk. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.118256] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Parmar P, Lopez‐Villalobos N, Tobin JT, Murphy E, Buckley F, Crowley SV, Kelly AL, Shalloo L. Effect of temperature on raw whole milk density and its potential impact on milk payment in the dairy industry. Int J Food Sci Technol 2021. [DOI: 10.1111/ijfs.14869] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Puneet Parmar
- Livestock Systems Department Teagasc Food Research Centre Moorepark Fermoy Co. CorkP61 C996Ireland
- School of Food and Nutritional Sciences University College Cork CorkT12 K8AFIreland
| | | | - John T. Tobin
- Food Chemistry and Technology Department Teagasc Food Research Centre Moorepark Fermoy Co. CorkP61 C996Ireland
| | - Eoin Murphy
- Food Chemistry and Technology Department Teagasc Food Research Centre Moorepark Fermoy Co. CorkP61 C996Ireland
| | - Frank Buckley
- Animal and Bioscience Department Teagasc Food Research Centre Moorepark Fermoy Co. CorkP61 C996Ireland
| | - Shane V. Crowley
- School of Food and Nutritional Sciences University College Cork CorkT12 K8AFIreland
| | - Alan L. Kelly
- School of Food and Nutritional Sciences University College Cork CorkT12 K8AFIreland
| | - Laurence Shalloo
- Livestock Systems Department Teagasc Food Research Centre Moorepark Fermoy Co. CorkP61 C996Ireland
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France TC, Kelly AL, Crowley SV, O'Mahony JA. The effects of temperature and transmembrane pressure on protein, calcium and plasmin partitioning during microfiltration of skim milk. Int Dairy J 2021. [DOI: 10.1016/j.idairyj.2020.104930] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Barone G, O'Regan J, Kelly AL, O'Mahony JA. Physicochemical and bulk handling properties of micronised calcium salts and their application in calcium fortification of whey protein-based solutions. J FOOD ENG 2021. [DOI: 10.1016/j.jfoodeng.2020.110213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Lin D, Kelly AL, Maidannyk V, Miao S. Effect of structuring emulsion gels by whey or soy protein isolate on the structure, mechanical properties, and in-vitro digestion of alginate-based emulsion gel beads. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2020.106165] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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Lin D, Kelly AL, Maidannyk V, Miao S. Effect of concentrations of alginate, soy protein isolate and sunflower oil on water loss, shrinkage, elastic and structural properties of alginate-based emulsion gel beads during gelation. Food Hydrocoll 2020. [DOI: 10.1016/j.foodhyd.2020.105998] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Parmar P, Lopez‐Villalobos N, Tobin JT, Murphy E, Crowley SV, Kelly AL, Shalloo L. Development and evaluation of a processing sector model for butter manufacture using a mass balance technique at two dairy processing sites. INT J DAIRY TECHNOL 2020. [DOI: 10.1111/1471-0307.12737] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Puneet Parmar
- Livestock Systems Department AGRIC, Teagasc Food Research Centre Moorepark Fermoy Co. CorkIreland
- School of Food and Nutritional Sciences University College, Cork Room 240 Food Science Building Cork Ireland
| | | | - John T Tobin
- Food Chemistry and Technology Department Teagasc Food Research Centre Moorepark, Moorepark West Fermoy Co. CorkP61 C996Ireland
| | - Eoin Murphy
- Food Chemistry and Technology Department Teagasc Food Research Centre Moorepark, Moorepark West Fermoy Co. CorkP61 C996Ireland
| | - Shane V Crowley
- School of Food and Nutritional Sciences University College, Cork Room 240 Food Science Building Cork Ireland
| | - Alan L Kelly
- School of Food and Nutritional Sciences University College, Cork Room 240 Food Science Building Cork Ireland
| | - Laurence Shalloo
- Livestock Systems Department AGRIC, Teagasc Food Research Centre Moorepark Fermoy Co. CorkIreland
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Li B, Waldron DS, Tobin JT, Subhir S, Kelly AL, McSweeney PL. Evaluation of production of Cheddar cheese from micellar casein concentrate. Int Dairy J 2020. [DOI: 10.1016/j.idairyj.2020.104711] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Parmar P, Lopez-Villalobos N, Tobin JT, Murphy E, McDonagh A, Crowley SV, Kelly AL, Shalloo L. The Effect of Compositional Changes Due to Seasonal Variation on Milk Density and the Determination of Season-Based Density Conversion Factors for Use in the Dairy Industry. Foods 2020; 9:foods9081004. [PMID: 32726926 PMCID: PMC7466286 DOI: 10.3390/foods9081004] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 07/16/2020] [Accepted: 07/23/2020] [Indexed: 12/16/2022] Open
Abstract
The objective of this study was to determine the effect of seasonal variation on milk composition and establish an algorithm to predict density based on milk composition to enable the calculation of season-based density conversion calculations. A total of 1035 raw whole milk samples were collected from morning and evening milking of 60 spring-calving individual cows of different genetic groups, namely Jersey, Elite HF (Holstein–Friesian) and National Average HF, once every two weeks for a period of 9 months (March–November, 2018). The average mean and standard deviation for milk compositional traits were 4.72 ± 1.30% fat, 3.85 ± 0.61% protein and 4.69 ± 0.30% lactose and density was estimated at 1.0308 ± 0.002 g/cm3. The density of the milk samples was evaluated using three methods: a portable density meter, DMA 35; a standard desktop version, DMA 4500M; and an Association of Official Agricultural Chemists (AOAC) method using 100-mL glass pycnometers. Statistical analysis using a linear mixed model showed a significant difference in density of milk samples (p < 0.05) across seasonal and compositional variations adjusted for the effects of days in milk, parity, the feeding treatment, the genetic group and the measurement technique. The mean density values and standard error of mean estimated for milk samples in each season, i.e., spring, summer and autumn were 1.0304 ± 0.00008 g/cm3, 1.0314 ± 0.00005 g/cm3 and 1.0309 ± 0.00007 g/cm3, respectively.
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Affiliation(s)
- Puneet Parmar
- Livestock Systems Department, Teagasc Food Research Centre, Moorepark, Fermoy, Cork, Ireland; (P.P.); (A.M.)
- School of Food and Nutritional Sciences, University College Cork, Cork, Ireland; (S.V.C.); (A.L.K.)
| | | | - John T. Tobin
- Food Chemistry and Technology Department, Teagasc Food Research Centre, Moorepark, Fermoy, Cork, Ireland; (J.T.T.); (E.M.)
| | - Eoin Murphy
- Food Chemistry and Technology Department, Teagasc Food Research Centre, Moorepark, Fermoy, Cork, Ireland; (J.T.T.); (E.M.)
| | - Arleen McDonagh
- Livestock Systems Department, Teagasc Food Research Centre, Moorepark, Fermoy, Cork, Ireland; (P.P.); (A.M.)
| | - Shane V. Crowley
- School of Food and Nutritional Sciences, University College Cork, Cork, Ireland; (S.V.C.); (A.L.K.)
| | - Alan L. Kelly
- School of Food and Nutritional Sciences, University College Cork, Cork, Ireland; (S.V.C.); (A.L.K.)
| | - Laurence Shalloo
- Livestock Systems Department, Teagasc Food Research Centre, Moorepark, Fermoy, Cork, Ireland; (P.P.); (A.M.)
- Correspondence:
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Paludetti LF, O'Callaghan TF, Sheehan JJ, Gleeson D, Kelly AL. Effect of Pseudomonas fluorescens proteases on the quality of Cheddar cheese. J Dairy Sci 2020; 103:7865-7878. [PMID: 32600766 DOI: 10.3168/jds.2019-18043] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Accepted: 04/10/2020] [Indexed: 12/31/2022]
Abstract
The objective of this study was to investigate the effect of adding different levels of a thermoresistant protease produced by a Pseudomonas fluorescens strain to milk on the manufacture and quality of Cheddar cheese. Fresh raw milk was collected, standardized, and pasteurized at 72°C for 15 s, and the enzyme was added to give a protease activity of 0.15 or 0.60 U/L (treatments P1 and P4, respectively), while one sample had no enzyme added (control). Milk was stored at 4°C for 48 h and Cheddar cheese was manufactured after 0 and 48 h of storage. Results indicated that the protease was active in milk during 48 h of storage; however, its effect on milk composition was minimal. The protein that was preferentially hydrolyzed by the protease over storage was β-casein, followed by κ-casein. The mean cheese yield and recovery of fat and protein obtained for all cheeses were not affected by protease activity. The protease showed low activity during cheese manufacture, possibly because of unfavorable conditions, including low pH. One of the factors that might have influenced protease activity was the pH of the curd (approximately 6.55 after acidification and 5.35 at milling), which was lower than that at which the enzyme would have optimum activity (pH 7 to 9). Consequently, the composition, pH, patterns of proteolysis, and hardness of all cheeses produced were similar and in accordance with values expected for that type of cheese, independently of the protease activity level. However, slight increases in proteolysis were observed in P4 cheeses and produced using milk stored for 48 h. Both the P1 and P4 cheeses had higher concentrations of free amino acids (FAA) compared with the control, whereas urea-PAGE electrophoretograms indicated a greater breakdown of caseins in the P4 cheese samples, which may be related to possible increases in numbers of proteolytic bacteria in milk during storage. Therefore, the thermoresistant psychrotrophic bacterial protease(s) tested in this study may affect the manufacture or quality of Cheddar cheese during ripening to a relatively limited extent. However, controlling initial levels of proteolytic bacteria in raw milk remains essential, because proteolysis affects the development of flavor and texture in cheese.
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Affiliation(s)
- Lizandra F Paludetti
- Teagasc Animal & Grassland Research and Innovation Centre, Moorepark, Fermoy, P61 C996 County Cork, Ireland; School of Food and Nutritional Sciences, University College Cork, T12 K8AF County Cork, Ireland
| | - Tom F O'Callaghan
- Teagasc Food Research Centre, Moorepark, Fermoy, P61 C996 County Cork, Ireland
| | - Jeremiah J Sheehan
- Teagasc Food Research Centre, Moorepark, Fermoy, P61 C996 County Cork, Ireland.
| | - David Gleeson
- Teagasc Animal & Grassland Research and Innovation Centre, Moorepark, Fermoy, P61 C996 County Cork, Ireland
| | - Alan L Kelly
- School of Food and Nutritional Sciences, University College Cork, T12 K8AF County Cork, Ireland
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Magan JB, O’Callaghan TF, Zheng J, Zhang L, Mandal R, Hennessy D, Fenelon MA, Wishart DS, Kelly AL, McCarthy NA. Effect of Diet on the Vitamin B Profile of Bovine Milk-Based Protein Ingredients. Foods 2020; 9:E578. [PMID: 32375412 PMCID: PMC7278826 DOI: 10.3390/foods9050578] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 04/20/2020] [Accepted: 04/24/2020] [Indexed: 12/21/2022] Open
Abstract
The influence of diet on the water-soluble vitamin composition of skim milk powder and whey protein ingredients produced from the milk of cows fed pasture or concentrate-based diets was examined. Fifty-one Holstein-Friesian cows were randomly assigned into three diets (n=17) consisting of outdoor grazing of perennial ryegrass (GRS), perennial ryegrass/white clover (CLV), or indoor feeding of total mixed ration (TMR) for an entire lactation. Raw mid-lactation milk from each group was processed into skim milk powder and further processed to yield micellar casein whey and acid whey. Sweet whey was also produced by renneting of pasteurised whole milk from each system. The water-soluble vitamin profile of each sample was analysed using a combination of direct injection mass spectrometry and reverse-phase liquid chromatography-mass spectrometry. Vitamin B3 and B3-amide concentrations were significantly higher (p < 0.05) in TMR-derived samples than in those from CLV and GRS, respectively. Vitamin B1, B2, and B7 concentrations were significantly higher in GRS and CLV-derived samples than those from TMR. Significant differences in vitamins B1, B2, and B3-amide were also observed between protein ingredient types. This study indicates that bovine feeding systems have a significant effect on B vitamin composition across a range of protein ingredient types.
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Affiliation(s)
- Jonathan B. Magan
- Food Chemistry & Technology Department, Teagasc Food Research Centre, Moorepark, Fermoy, P61 C996 Cork, Ireland; (J.B.M.); (T.F.O.); (M.A.F.)
- School of Food and Nutritional Sciences, University College Cork, T12 YT20 Cork, Ireland;
| | - Tom F. O’Callaghan
- Food Chemistry & Technology Department, Teagasc Food Research Centre, Moorepark, Fermoy, P61 C996 Cork, Ireland; (J.B.M.); (T.F.O.); (M.A.F.)
| | - Jiamin Zheng
- The Metabolomics Innovation Centre, School of Biological Sciences, University of Alberta, Edmonton, AB T6G1C9, Canada; (J.Z.); (L.Z.); (R.M.); (D.S.W.)
| | - Lun Zhang
- The Metabolomics Innovation Centre, School of Biological Sciences, University of Alberta, Edmonton, AB T6G1C9, Canada; (J.Z.); (L.Z.); (R.M.); (D.S.W.)
| | - Rupasri Mandal
- The Metabolomics Innovation Centre, School of Biological Sciences, University of Alberta, Edmonton, AB T6G1C9, Canada; (J.Z.); (L.Z.); (R.M.); (D.S.W.)
| | - Deirdre Hennessy
- Teagasc Animal and Grassland Research & Innovation Centre, Moorepark, Fermoy, P61 C996 Cork, Ireland;
| | - Mark A. Fenelon
- Food Chemistry & Technology Department, Teagasc Food Research Centre, Moorepark, Fermoy, P61 C996 Cork, Ireland; (J.B.M.); (T.F.O.); (M.A.F.)
| | - David S. Wishart
- The Metabolomics Innovation Centre, School of Biological Sciences, University of Alberta, Edmonton, AB T6G1C9, Canada; (J.Z.); (L.Z.); (R.M.); (D.S.W.)
| | - Alan L. Kelly
- School of Food and Nutritional Sciences, University College Cork, T12 YT20 Cork, Ireland;
| | - Noel A. McCarthy
- Food Chemistry & Technology Department, Teagasc Food Research Centre, Moorepark, Fermoy, P61 C996 Cork, Ireland; (J.B.M.); (T.F.O.); (M.A.F.)
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Gaspard SJ, Sunds AV, Larsen LB, Poulsen NA, O'Mahony JA, Kelly AL, Brodkorb A. Influence of desialylation of caseinomacropeptide on the denaturation and aggregation of whey proteins. J Dairy Sci 2020; 103:4975-4990. [PMID: 32229125 DOI: 10.3168/jds.2019-17780] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Accepted: 01/24/2020] [Indexed: 11/19/2022]
Abstract
The effect of the addition of caseinomacropeptide (CMP) or desialylated CMP on the heat-induced denaturation and aggregation of whey proteins was investigated in the pH range 3 to 7 after heating at 80°C for 30 min. The rate and temperature of denaturation, the extent of aggregation, and the changes in secondary structure of the whey proteins heated in presence of CMP or desialylated CMP were measured. The sialic acid bound to CMP favored the denaturation and aggregation of whey proteins when the whey proteins were oppositely charged to CMP at pH 4. A transition occurred at pH 6, below which the removal of sialic acid enhanced the stabilizing properties of CMP against the denaturation and aggregation of the whey proteins. At pH >6, the interactions between desialylated CMP and the whey proteins led to more extensive denaturation and aggregation. Sialic acid bound to CMP influenced the denaturation and aggregation behavior of whey proteins in a pH-dependent manner, and this should be considered in future studies on the heat stability of such systems containing CMP.
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Affiliation(s)
- Sophie J Gaspard
- Teagasc Food Research Centre, Moorepark, Fermoy, Co. Cork, P61 C996, Ireland; School of Food and Nutritional Sciences, University College Cork, T12 YN60, Ireland
| | - Anne V Sunds
- Department of Food Science, Faculty of Technical Sciences, Aarhus University, 8200 Aarhus N Denmark
| | - Lotte B Larsen
- Department of Food Science, Faculty of Technical Sciences, Aarhus University, 8200 Aarhus N Denmark
| | - Nina A Poulsen
- Department of Food Science, Faculty of Technical Sciences, Aarhus University, 8200 Aarhus N Denmark
| | - James A O'Mahony
- School of Food and Nutritional Sciences, University College Cork, T12 YN60, Ireland
| | - Alan L Kelly
- School of Food and Nutritional Sciences, University College Cork, T12 YN60, Ireland
| | - André Brodkorb
- Teagasc Food Research Centre, Moorepark, Fermoy, Co. Cork, P61 C996, Ireland.
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Paludetti LF, Kelly AL, Gleeson D. Effect of thermoresistant protease of Pseudomonas fluorescens on rennet coagulation properties and proteolysis of milk. J Dairy Sci 2020; 103:4043-4055. [PMID: 32147268 DOI: 10.3168/jds.2019-17771] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Accepted: 12/26/2019] [Indexed: 01/05/2023]
Abstract
This study aimed to investigate the effect of different activity levels of a thermoresistant protease, produced by Pseudomonas fluorescens (ATCC 17556), on the cheesemaking properties of milk and proteolysis levels. Sterilized reconstituted skim milk powder was inoculated with the bacteria, and after incubation, centrifuged to obtain a supernatant-containing protease. Raw milk was collected and inoculated to obtain a protease activity of 0.15, 0.60, and 1.5 U/L of milk (treatments P1, P4, and P10, respectively). One sample was not inoculated (control) and noninoculated supernatant was added to a fifth sample to be used as a negative control. Samples were stored at 4°C for 72 h. After 0, 48, and 72 h, the rennet coagulation properties and proteolysis levels were assessed. The protease produced was thermoresistant, as no significant differences were observed in the activity in the pasteurized (72°C for 15 s) and nonpasteurized supernatants. The chromatograms and electrophoretograms indicated that the protease preferably hydrolyzed κ-casein and β-casein, and levels of proteolysis increased with added protease activity over storage time. The hydrolysis of αS-caseins and major whey proteins increased considerably in P10 milk samples. At 0 h, the increase in the level of protease activity decreased the rennet coagulation time (RCT, min) of the samples, possibly due to synergistic proteolysis of κ-casein into para-κ-casein. However, over prolonged storage, hydrolysis of β-casein and αS-casein increased in P4 and P10 samples. The RCT of P4 samples increased over time and the coagulum became softer, whereas P10 samples did not coagulate after 48 h of storage. In contrast, the RCT of P1 samples decreased over time and a firmer coagulum was obtained, possibly due to a lower rate of hydrolysis of β-casein and αS-casein. Increased levels of protease could result in further hydrolysis of caseins, affecting the processability of milk over storage time.
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Affiliation(s)
- Lizandra F Paludetti
- Teagasc, Animal and Grassland Research and Innovation Centre, Moorepark, Fermoy, County Cork P61 C996, Ireland; School of Food and Nutritional Sciences, University College Cork, County Cork T12 K8AF, Ireland
| | - Alan L Kelly
- School of Food and Nutritional Sciences, University College Cork, County Cork T12 K8AF, Ireland
| | - David Gleeson
- Teagasc, Animal and Grassland Research and Innovation Centre, Moorepark, Fermoy, County Cork P61 C996, Ireland.
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39
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Kelleher CM, Aydogdu T, Murphy KM, O'Mahony JA, Kelly AL, O'Callaghan DJ, McCarthy NA. The effect of protein profile and preheating on denaturation of whey proteins and development of viscosity in milk protein beverages during heat treatment. INT J DAIRY TECHNOL 2020. [DOI: 10.1111/1471-0307.12679] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Clodagh M Kelleher
- Food Chemistry and Technology Department Teagasc Food Research Centre Cork Ireland
- School of Food and Nutritional Sciences University College Cork Cork Ireland
| | - Tugce Aydogdu
- Food Chemistry and Technology Department Teagasc Food Research Centre Cork Ireland
- School of Food and Nutritional Sciences University College Cork Cork Ireland
| | - Kevin M Murphy
- Food Chemistry and Technology Department Teagasc Food Research Centre Cork Ireland
| | - James A O'Mahony
- School of Food and Nutritional Sciences University College Cork Cork Ireland
| | - Alan L Kelly
- School of Food and Nutritional Sciences University College Cork Cork Ireland
| | - Donal J O'Callaghan
- Food Chemistry and Technology Department Teagasc Food Research Centre Cork Ireland
| | - Noel A McCarthy
- Food Chemistry and Technology Department Teagasc Food Research Centre Cork Ireland
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40
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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41
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Magan JB, O’Callaghan TF, Zheng J, Zhang L, Mandal R, Hennessy D, Fenelon MA, Wishart DS, Kelly AL, McCarthy NA. Impact of Bovine Diet on Metabolomic Profile of Skim Milk and Whey Protein Ingredients. Metabolites 2019; 9:metabo9120305. [PMID: 31861081 PMCID: PMC6950411 DOI: 10.3390/metabo9120305] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Revised: 12/13/2019] [Accepted: 12/14/2019] [Indexed: 02/07/2023] Open
Abstract
The influence of bovine diet on the metabolome of reconstituted skim milk powder (SMP) and protein ingredients produced from the milk of cows fed on pasture or concentrate-based diets was investigated. Cows were randomly assigned to diets consisting of perennial ryegrass only (GRS), perennial ryegrass/white clover sward (CLV), or indoor total mixed ration (TMR) for an entire lactation. Raw milk obtained from each group was processed at pilot scale, to produce SMP and sweet whey, and SMP was further processed at laboratory scale, to yield ideal whey and acid whey. The total amino acid composition and metabolome of each sample were analyzed, using high-performance cation exchange and a targeted combination of direct-injection mass spectrometry and reverse-phase liquid chromatography–tandem mass spectrometry (LC–MS/MS), respectively. The nitrogen composition of the products from each of the diets was similar, with one exception being the significantly higher nonprotein nitrogen content in TMR-derived skim milk powder than that from the GRS system. Total amino acid analysis showed significantly higher concentrations of glycine in GRS- and CLV-derived sweet whey and acid whey than in those from TMR. The cysteine contents of CLV-derived ideal whey and acid whey were significantly higher than for TMR, while the valine content of GRS-derived acid whey was significantly higher than TMR. The phenylalanine content of GRS-derived ideal whey was significantly higher than that from CLV. Metabolomic analysis showed significantly higher concentrations of the metabolites glutamine, valine, and phosphocreatine in each ingredient type derived from TMR than those from GRS or CLV, while the serine content of each GRS-derived ingredient type was significantly higher than that in TMR-derived ingredients. These results demonstrate that the type of bovine feeding system used can have a significant effect on the amino acid composition and metabolome of skim milk and whey powders and may aid in the selection of raw materials for product manufacture, while the clear separation between the samples gives further evidence for distinguishing milk products produced from different feeding systems based on LC–MS/MS.
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Affiliation(s)
- Jonathan B. Magan
- Food Chemistry & Technology Department, Teagasc Food Research Centre, Moorepark, Fermoy, P61 C996 Cork, Ireland; (J.B.M.); (T.F.O.); (M.A.F.)
- School of Food and Nutritional Sciences, University College Cork, T12 YT20 Cork, Ireland;
| | - Tom F. O’Callaghan
- Food Chemistry & Technology Department, Teagasc Food Research Centre, Moorepark, Fermoy, P61 C996 Cork, Ireland; (J.B.M.); (T.F.O.); (M.A.F.)
| | - Jiamin Zheng
- The Metabolomics Innovation Centre, School of Biological Sciences, University of Alberta, Edmonton, AB T6G1C9, Canada; (J.Z.); (L.Z.); (R.M.); (D.S.W.)
| | - Lun Zhang
- The Metabolomics Innovation Centre, School of Biological Sciences, University of Alberta, Edmonton, AB T6G1C9, Canada; (J.Z.); (L.Z.); (R.M.); (D.S.W.)
| | - Rupasri Mandal
- The Metabolomics Innovation Centre, School of Biological Sciences, University of Alberta, Edmonton, AB T6G1C9, Canada; (J.Z.); (L.Z.); (R.M.); (D.S.W.)
| | - Deirdre Hennessy
- Teagasc Animal and Grassland Research & Innovation Centre, Moorepark, Fermoy, P61 C996 Cork, Ireland;
| | - Mark A. Fenelon
- Food Chemistry & Technology Department, Teagasc Food Research Centre, Moorepark, Fermoy, P61 C996 Cork, Ireland; (J.B.M.); (T.F.O.); (M.A.F.)
| | - David S. Wishart
- The Metabolomics Innovation Centre, School of Biological Sciences, University of Alberta, Edmonton, AB T6G1C9, Canada; (J.Z.); (L.Z.); (R.M.); (D.S.W.)
| | - Alan L. Kelly
- School of Food and Nutritional Sciences, University College Cork, T12 YT20 Cork, Ireland;
| | - Noel A. McCarthy
- Food Chemistry & Technology Department, Teagasc Food Research Centre, Moorepark, Fermoy, P61 C996 Cork, Ireland; (J.B.M.); (T.F.O.); (M.A.F.)
- Correspondence: ; Tel.: +353-(0)25-42202
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Li M, O'Mahony JA, Kelly AL, Brodkorb A. The influence of temperature- and divalent-cation-mediated aggregation of β-casein on the physical and microstructural properties of β-casein-stabilised emulsions. Colloids Surf B Biointerfaces 2019; 187:110620. [PMID: 31761519 DOI: 10.1016/j.colsurfb.2019.110620] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 10/20/2019] [Accepted: 10/28/2019] [Indexed: 11/17/2022]
Abstract
The objective of this study was to assess the influence of self-association of β-casein (β-CN) induced by both increasing temperature (5-55 °C) and divalent cation addition (Ca2+ or Mg2+) on the properties of β-CN-stabilised emulsions. The particle size of 0.5% (w/w) β-CN in 10 mM imidazole/HCl buffer (pH 6.8) was determined as a function of temperature and addition of divalent cations. Addition of CaCl2 caused a greater increase in protein particle size than MgCl2. Oil-in-water emulsions stabilised with 0.5% (w/w) β-CN, β-CN with added CaCl2 or MgCl2 (β-CN/Ca and β-CN/Mg, respectively) were also investigated as a function of temperature using light scattering, analytical centrifugation, rheology and confocal laser scanning microscopy (CLSM). Emulsions prepared with β-CN/Ca flocculated after incubation at 55 °C for 20 min and displayed significantly different physical properties (p < 0.05) compared to emulsions stabilised with β-CN or β-CN/Mg in the temperature range 5-55 °C. Based on CLSM analysis and analysis of the interfacial protein load, this flocculation was attributed to the interaction of adsorbed β-CN between droplets and the interaction of adsorbed and non-adsorbed β-CN aggregates in the aqueous phase via calcium bridges. Furthermore, the flocculation of β-CN/Ca emulsions was reversible upon cooling, which is similar to that of β-CN/Ca in solution. In conclusion, the temperature-dependent behaviour of β-CN-stabilised emulsions correlated to the temperature-induced aggregation of β-CN, particularly in the presence of Ca2+. Hence, the stability of β-CN-stabilised emulsions can be predicted from the extent of β-CN aggregation in aqueous solution (i.e., aggregate size).
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Affiliation(s)
- Meng Li
- Teagasc Food Research Centre, Moorepark, Fermoy, Co. Cork, Ireland; School of Food and Nutritional Sciences, University College Cork, Cork, Ireland
| | - James A O'Mahony
- School of Food and Nutritional Sciences, University College Cork, Cork, Ireland
| | - Alan L Kelly
- School of Food and Nutritional Sciences, University College Cork, Cork, Ireland
| | - André Brodkorb
- Teagasc Food Research Centre, Moorepark, Fermoy, Co. Cork, Ireland.
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43
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Lamichhane P, Sharma P, Kennedy D, Kelly AL, Sheehan JJ. Microstructure and fracture properties of semi-hard cheese: Differentiating the effects of primary proteolysis and calcium solubilization. Food Res Int 2019; 125:108525. [DOI: 10.1016/j.foodres.2019.108525] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 06/04/2019] [Accepted: 06/21/2019] [Indexed: 11/29/2022]
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44
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Panthi RR, Kelly AL, O'Callaghan DJ, Sheehan JJ. Measurement of syneretic properties of rennet-induced curds and impact of factors such as concentration of milk: A review. Trends Food Sci Technol 2019. [DOI: 10.1016/j.tifs.2019.07.023] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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45
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Magan JB, Tobin JT, O'Callaghan TF, Kelly AL, Fenelon MA, Hennessy D, McCarthy NA. Physicochemical properties of whole milk powder derived from cows fed pasture or total mixed ration diets. J Dairy Sci 2019; 102:9611-9621. [PMID: 31447155 DOI: 10.3168/jds.2019-16415] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Accepted: 07/02/2019] [Indexed: 11/19/2022]
Abstract
This study examined the effect of dietary factors on compositional and functional properties of whole milk powder (WMP) produced from bovine milk. Raw milk samples were obtained from 3 groups of 18 Holstein Friesian spring-calving cows randomly assigned to diets based on perennial ryegrass (GRS), perennial ryegrass/white clover sward (CLV), and total mixed ration (TMR). Raw milks obtained in late lactation were subsequently standardized for fat, heat-treated (90°C for 30 s), evaporated, and homogenized before spray drying. The WMP produced from each diet were analyzed to determine differences in color, particle size distribution, heat coagulation time, yogurt gelation, texture profile, and protein profile due to each diet. Significant differences in heat coagulation time were observed between the CLV and TMR samples, whereas color values were significantly different between GRS and TMR samples. No significant differences in gross composition, protein profile, or whey protein nitrogen index were found between the 3 WMP samples. Average D90 values (the particle size at which 90% of the particles were smaller than the specified size) for fat globules were significantly lower in the TMR sample compared with the GRS and CLV samples. Yogurts produced from GRS- and CLV-derived WMP had significantly higher elastic moduli (G') than those produced from TMR-derived WMP. Similarly, texture profile analysis revealed significantly higher firmness values in yogurt samples derived from CLV compared with TMR samples. Our data characterize the effect of these diets on the composition and functional properties of fat-standardized WMP, suggesting better yogurt functionality and thermal stability in WMP derived from pasture-based bovine diets.
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Affiliation(s)
- Jonathan B Magan
- Teagasc Food Research Centre, Moorepark, Fermoy, Co. Cork, Ireland, P61 C996; School of Food and Nutritional Sciences, University College Cork, Cork, Co. Cork, Ireland, T12 YN60
| | - John T Tobin
- Teagasc Food Research Centre, Moorepark, Fermoy, Co. Cork, Ireland, P61 C996
| | - Tom F O'Callaghan
- Teagasc Food Research Centre, Moorepark, Fermoy, Co. Cork, Ireland, P61 C996
| | - Alan L Kelly
- School of Food and Nutritional Sciences, University College Cork, Cork, Co. Cork, Ireland, T12 YN60
| | - Mark A Fenelon
- Teagasc Food Research Centre, Moorepark, Fermoy, Co. Cork, Ireland, P61 C996
| | - Deirdre Hennessy
- Teagasc, Animal and Grassland Research and Innovation Centre, Moorepark, Fermoy, Co. Cork, Ireland, P61 P302
| | - Noel A McCarthy
- Teagasc Food Research Centre, Moorepark, Fermoy, Co. Cork, Ireland, P61 C996.
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46
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Amagliani L, O'Regan J, Schmitt C, Kelly AL, O'Mahony JA. Characterisation of the physicochemical properties of intact and hydrolysed rice protein ingredients. J Cereal Sci 2019. [DOI: 10.1016/j.jcs.2019.04.002] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Ryan PM, Stanton C, Ross RP, Kelly AL, Dempsey E, Ryan CA. Paediatrician's perspective of infant gut microbiome research: current status and challenges. Arch Dis Child 2019; 104:701-705. [PMID: 31113768 DOI: 10.1136/archdischild-2019-316891] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Revised: 03/26/2019] [Accepted: 03/27/2019] [Indexed: 01/16/2023]
Abstract
Due to its innately intriguing nature and recent genomic technological advances, gut microbiome research has been at the epicentre of medical research for over a decade now. Despite the degree of publicisation, a comprehensive understanding and, therefore, acceptance of the area as a whole may be somewhat lacking within the broader medical community. This paper summarises the main analytical techniques and tools currently applied to compositional microbiome research. In addition, we outline five major lessons learnt from a decade of infant microbiome research, along with the current research gaps. Finally, we aim to provide an introduction and general guidelines relating to infant gut microbiome research for the practising paediatrician.
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Affiliation(s)
| | - Catherine Stanton
- Teagasc Food Research Centre, Moorepark, Fermoy, Co. Cork, Ireland.,APC Microbiome Ireland, University College Cork, Cork, Ireland
| | - R Paul Ross
- APC Microbiome Ireland, University College Cork, Cork, Ireland
| | - Alan L Kelly
- School of Food and Nutritional Sciences, University College Cork, Cork, Ireland
| | - Eugene Dempsey
- Department of Paediatrics and Child Health, University College Cork, Cork, Ireland.,Department of Neonatology, Cork University Maternity Hospital, Cork, Ireland
| | - C Anthony Ryan
- Department of Paediatrics and Child Health, University College Cork, Cork, Ireland.,Department of Neonatology, Cork University Maternity Hospital, Cork, Ireland
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48
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Panthi RR, Kelly AL, McMahon DJ, Dai X, Vollmer AH, Sheehan JJ. Response surface methodology modeling of protein concentration, coagulum cut size, and set temperature on curd moisture loss kinetics during curd stirring. J Dairy Sci 2019; 102:4989-5004. [DOI: 10.3168/jds.2018-15051] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2018] [Accepted: 02/04/2019] [Indexed: 11/19/2022]
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49
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Panthi RR, Sundekilde UK, Kelly AL, Hennessy D, Kilcawley KN, Mannion DT, Fenelon MA, Sheehan JJ. Influence of herd diet on the metabolome of Maasdam cheeses. Food Res Int 2019; 123:722-731. [PMID: 31285022 DOI: 10.1016/j.foodres.2019.05.026] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 05/09/2019] [Accepted: 05/16/2019] [Indexed: 11/19/2022]
Abstract
The untargeted metabolic profiles of ripened Maasdam cheese samples prepared from milk derived from three herd groups, fed: (1) indoors on total mixed ration (TMR), or outdoors on (2) grass only pasture (GRA) or (3) grass and white clover pasture (CLO) were studied using high resolution nuclear magnetic resonance (1H NMR), high resolution magic angle spinning nuclear magnetic resonance (1H HRMAS NMR) and headspace (HS) gas chromatography mass spectrometry (GC-MS). A total of 31 compounds were identified using 1H NMR and 32 volatile compounds including 7 acids, 5 esters, 4 alcohols, 4 ketones, 4 sulfur compounds, 2 aldehydes, 3 hydrocarbons, 2 terpenes and a lactone were identified using GC-MS in Maasdam cheeses ripened for 97-d. On comparing the 1H NMR metabolic profiles, TMR-derived cheese had higher levels of citrate compared to GRA-derived cheese. The toluene content of cheese was significantly higher in GRA or CLO compared to TMR cheeses and dimethyl sulfide was identified only in CLO-derived cheese samples as detected using HS GC-MS. These compounds are proposed as indicator compounds for Maasdam cheese derived from pasture-fed milk. Clear differences between outdoor or indoor feeding systems in terms of cheese metabolites were detected in the lipid phase, as indicated by principal component analysis (PCA) from 1H HRMAS NMR spectra, although differences based on PCA of all 1H NMR spectra and HS-GC-MS were less clear. Overall, this study presented the metabolite profile and identified specific compounds which may be useful for discriminating between ripened Maasdam cheese and related cheese varieties manufactured from indoor or outdoor herd-feeding systems.
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Affiliation(s)
- Ram R Panthi
- Teagasc Food Research Centre Moorepark, Fermoy Co. Cork P61C996, Ireland; School of Food and Nutritional Sciences, University College Cork, Cork T12YN60, Ireland.
| | - Ulrik K Sundekilde
- Department of Food Science, Faculty of Science and Technology, Aarhus University, Kirstinebjergvej, Årslev DK-5792, Denmark.
| | - Alan L Kelly
- School of Food and Nutritional Sciences, University College Cork, Cork T12YN60, Ireland.
| | - Deirdre Hennessy
- Teagasc Food Research Centre Moorepark, Fermoy Co. Cork P61C996, Ireland.
| | - Kieran N Kilcawley
- Teagasc Food Research Centre Moorepark, Fermoy Co. Cork P61C996, Ireland.
| | - David T Mannion
- Teagasc Food Research Centre Moorepark, Fermoy Co. Cork P61C996, Ireland.
| | - Mark A Fenelon
- Teagasc Food Research Centre Moorepark, Fermoy Co. Cork P61C996, Ireland.
| | - Jeremiah J Sheehan
- Teagasc Food Research Centre Moorepark, Fermoy Co. Cork P61C996, Ireland.
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50
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Panthi RR, Kelly AL, Hennessy D, O'Sullivan MG, Kilcawley KN, Mannion DT, Fenelon MA, Sheehan JJ. Effect of pasture versus indoor feeding regimes on the yield, composition, ripening and sensory characteristics of Maasdam cheese. INT J DAIRY TECHNOL 2019. [DOI: 10.1111/1471-0307.12590] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Ram R Panthi
- Teagasc Food Research Centre Moorepark Fermoy P61C966 Co. CorkIreland
- School of Food and Nutritional Sciences University College Cork T12YN60 Cork Ireland
| | - Alan L Kelly
- School of Food and Nutritional Sciences University College Cork T12YN60 Cork Ireland
| | - Deirdre Hennessy
- Teagasc, Animal and Grassland Research and Innovation Centre Moorepark Fermoy P61C966 Co. Cork Ireland
| | - Maurice G O'Sullivan
- School of Food and Nutritional Sciences University College Cork T12YN60 Cork Ireland
| | | | - David T Mannion
- Teagasc Food Research Centre Moorepark Fermoy P61C966 Co. CorkIreland
| | - Mark A Fenelon
- Teagasc Food Research Centre Moorepark Fermoy P61C966 Co. CorkIreland
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