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Lopez-Benitez K, Alcazar-Gonzalez P, El Qassim LA, Fernandez-Argüelles MT, Vicente F, Royo LJ, Menendez-Miranda M. Development of a Gold Nanoparticle-Based Sensor for Authentication of Organic Milk Based on Differential Levels of miRNA. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:1364. [PMID: 39195402 DOI: 10.3390/nano14161364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2024] [Revised: 08/08/2024] [Accepted: 08/10/2024] [Indexed: 08/29/2024]
Abstract
Dairy production systems significantly impact environmental sustainability, animal welfare, and human health. Intensive farming maximizes output through high-input practices, raising concerns about environmental degradation, animal welfare, and health risks from antibiotic residues. Conversely, organic farming emphasizes sustainable practices, animal welfare, and minimal synthetic inputs, potentially enhancing biodiversity, soil health, and milk quality. MicroRNAs (miRNAs), non-coding RNAs regulating gene expression, are promising biomarkers due to their response to various conditions. In this study, miRNAs bta-miR-103 and bta-miR-155, which are abundant in milk from pasture-fed cows, were selected. Additionally, bta-miR-215, which is abundant in milk fat from intensive systems, was also studied, in order to differentiate dairy production systems. A novel, cost-effective gold nanoparticle (AuNP)-based sensor was developed for miRNA detection, leveraging the unique plasmonic properties of AuNPs for visual detection. The method involves functionalizing AuNPs with complementary RNA probes and detecting miRNA-induced aggregation through colorimetric changes. This rapid, results in 30 min, and sensitive, visual limit of detection of 200 nM, assay requires minimal instrumentation and can be easily interpreted, offering significant advantages for field implementation in characterizing dairy production systems. This study demonstrates the successful application of this sensor in detecting miRNAs in 350 nM miRNA spiked raw milk, highlighting its potential for in situ dairy industry applications.
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Affiliation(s)
| | - Patricia Alcazar-Gonzalez
- Department of Physical and Analytical Chemistry, Faculty of Chemistry, University of Oviedo, 33006 Asturias, Spain
| | - Loubna Abou El Qassim
- Regional Service for Agrofood Research and Development (SERIDA), 33300 Asturias, Spain
| | | | - Fernando Vicente
- Regional Service for Agrofood Research and Development (SERIDA), 33300 Asturias, Spain
| | - Luis J Royo
- Regional Service for Agrofood Research and Development (SERIDA), 33300 Asturias, Spain
- Department of Functional Biology, Genetics, University of Oviedo, 33006 Oviedo, Spain
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Connolly C, Timlin M, Hogan SA, Murphy EG, O'Callaghan TF, Brodkorb A, Hennessy D, Fitzpartick E, O'Donavan M, McCarthy K, Murphy JP, Yin X, Brennan L. Impact of dietary regime on the metabolomic profile of bovine buttermilk and whole milk powder. Metabolomics 2024; 20:93. [PMID: 39096405 PMCID: PMC11297810 DOI: 10.1007/s11306-024-02157-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Accepted: 07/20/2024] [Indexed: 08/05/2024]
Abstract
INTRODUCTION Bovine milk contains a rich matrix of nutrients such as carbohydrates, fat, protein and various vitamins and minerals, the composition of which is altered by factors including dietary regime. OBJECTIVES The objective of this research was to investigate the impact of dietary regime on the metabolite composition of bovine whole milk powder and buttermilk. METHODS Bovine whole milk powder and buttermilk samples were obtained from spring-calving cows, consuming one of three diets. Group 1 grazed outdoors on perennial ryegrass which was supplemented with 5% concentrates; group 2 were maintained indoors and consumed a total mixed ration diet; and group 3 consumed a partial mixed ration diet consisting of perennial ryegrass during the day and total mixed ration maintained indoors at night. RESULTS Metabolomic analysis of the whole milk powder (N = 27) and buttermilk (N = 29) samples was preformed using liquid chromatography-tandem mass spectrometry, with 504 and 134 metabolites identified in the samples respectively. In whole milk powder samples, a total of 174 metabolites from various compound classes were significantly different across dietary regimes (FDR adjusted p-value ≤ 0.05), including triglycerides, of which 66% had their highest levels in pasture-fed samples. Triglycerides with highest levels in pasture-fed samples were predominantly polyunsaturated with high total carbon number. Regarding buttermilk samples, metabolites significantly different across dietary regimes included phospholipids, sphingomyelins and an acylcarnitine. CONCLUSION In conclusion the results reveal a significant impact of a pasture-fed dietary regime on the metabolite composition of bovine dairy products, with a particular impact on lipid compound classes.
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Affiliation(s)
- Claire Connolly
- UCD School of Agriculture and Food Science, Institute of Food and Health, UCD, Belfield, Dublin 4, D04 V1W8, Ireland
- UCD Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Dublin, D04 V1W8, Ireland
- Food for Health Ireland, UCD, Belfield, Dublin 4, D04 V1W8, Ireland
| | - Mark Timlin
- UCD School of Agriculture and Food Science, Institute of Food and Health, UCD, Belfield, Dublin 4, D04 V1W8, Ireland
- Food for Health Ireland, UCD, Belfield, Dublin 4, D04 V1W8, Ireland
- Teagasc, Food Research Centre, Moorepark, Fermoy, P61 C996, Co. Cork, Ireland
| | - Sean A Hogan
- Teagasc, Food Research Centre, Moorepark, Fermoy, P61 C996, Co. Cork, Ireland
| | - Eoin G Murphy
- Food for Health Ireland, UCD, Belfield, Dublin 4, D04 V1W8, Ireland
- Teagasc, Food Research Centre, Moorepark, Fermoy, P61 C996, Co. Cork, Ireland
| | - Tom F O'Callaghan
- Food for Health Ireland, Teagasc Food Research Centre, Moorepark, Fermoy, P61 C996, Co. Cork, Ireland
- School of Food and Nutritional Sciences, University College Cork, Cork, T12 Y337, Co. Cork, Ireland
| | - André Brodkorb
- UCD School of Agriculture and Food Science, Institute of Food and Health, UCD, Belfield, Dublin 4, D04 V1W8, Ireland
- Teagasc, Food Research Centre, Moorepark, Fermoy, P61 C996, Co. Cork, Ireland
- Teagasc, Animal and Grassland Research and Innovation Centre, Moorepark, Fermoy, P61 P302, Co. Cork, Ireland
| | - Deirdre Hennessy
- Teagasc, Animal and Grassland Research and Innovation Centre, Moorepark, Fermoy, P61 P302, Co. Cork, Ireland
- School of Biological, Earth and Environmental Sciences, University College Cork, Cork, T23 N73K, Co. Cork, Ireland
| | - Ellen Fitzpartick
- Teagasc, Environmental Research Centre, Johnstown Castle, Y35 Y521, Co. Wexford, Ireland
| | - Michael O'Donavan
- Teagasc, Animal and Grassland Research and Innovation Centre, Moorepark, Fermoy, P61 P302, Co. Cork, Ireland
| | - Kieran McCarthy
- Teagasc, Animal and Grassland Research and Innovation Centre, Moorepark, Fermoy, P61 P302, Co. Cork, Ireland
| | - John P Murphy
- Teagasc, Animal and Grassland Research and Innovation Centre, Moorepark, Fermoy, P61 P302, Co. Cork, Ireland
| | - Xiaofei Yin
- UCD School of Agriculture and Food Science, Institute of Food and Health, UCD, Belfield, Dublin 4, D04 V1W8, Ireland
- UCD Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Dublin, D04 V1W8, Ireland
| | - Lorraine Brennan
- UCD School of Agriculture and Food Science, Institute of Food and Health, UCD, Belfield, Dublin 4, D04 V1W8, Ireland.
- UCD Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Dublin, D04 V1W8, Ireland.
- Food for Health Ireland, UCD, Belfield, Dublin 4, D04 V1W8, Ireland.
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Mierlita D, Mierlita S, Struti DI, Mintas OS. Effects of Hemp Seed on the Production, Fatty Acid Profile, and Antioxidant Capacity of Milk from Goats Fed Hay or a Mixed Shrubs-Grass Rangeland. Animals (Basel) 2023; 13:3435. [PMID: 38003053 PMCID: PMC10668719 DOI: 10.3390/ani13223435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 11/04/2023] [Accepted: 11/05/2023] [Indexed: 11/26/2023] Open
Abstract
The research objective was to evaluate the effect of dietary incorporation of hemp seeds in goats fed with hay or mixed shrubs-grass rangeland on the production, FA profile and health-related lipid indices, antioxidant content and total antioxidant capacity of milk, with the purpose to increase the content of beneficial ingredients in milk and to improve its functional activity. Forty indigenous Carpathian goats were allocated into two groups according to the type of basic forage in their diet: hay (H) or mixed shrubs-grass rangeland (SG); each of them was further divided into two subgroups according to the presence of Hs in the concentrate mixture (250 g/kg) or not. Milk production was determined, and milk samples were collected and analyzed for fat, protein, lactose, and cholesterol content, as well as FA profile, lipophilic antioxidant content (α-tocopherol and retinol), and milk TAC. SG goats gave less milk (p < 0.01) but with higher milk fat (p < 0.001) and lower cholesterol content (p < 0.01) than H goats, while milk protein and lactose contents were not affected. Supplementing the diet with Hs caused a significant increase in milk production (p < 0.05) and milk fat content (p < 0.001) and a decrease in cholesterol content (p < 0.05). Grazing compared to indoor feeding but also supplementing the diet with Hs had the effect of decreasing the proportion of SFAs and increasing the concentrations of polyunsaturated FA (PUFA) in goat milk fat (p < 0.01). Fats in the milk of SG goats compared to H, but also in those supplemented with Hs, showed significantly higher proportions of vaccenic acid (VA), rumenic acid (CLA c-9,t-11) and omega-3 FA (α-linolenic acid (ALA), eicosapentaenoic acid (EPA), and docosapentaenoic acid (DPA)) which are considered healthy for consumers. The feeding system based on SG and the diet supplementation with Hs ensured the best nutritional and functional quality of milk, confirmed by the FA profile, antioxidant content, and by the value of health-related lipid indices (n-6/n-3 FA ratio and hypo-/hypercholesterolemia, atherogenic index (AI), thrombogenic index (TI), and health promotion index (HPI)). The results of our work will be useful for the development of optimal nutritional strategies that improve the FA profile and the antioxidants content in goat milk, with beneficial effects on human health.
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Affiliation(s)
- Daniel Mierlita
- Department of Animal Nutrition, Faculty of Environmental Protection, University of Oradea, 1 University St., 410087 Oradea, Romania; (D.M.); (O.S.M.)
| | - Stefania Mierlita
- Department of Accounting and Audit, Faculty of Economics and Business Administration, Babes-Bolyai University, 58-60 Teodor Mihali St., 400372 Cluj-Napoca, Romania;
| | - Danut Ioan Struti
- Department of Technological Science, Faculty of Animal Science and Biotechnologies, University of Agricultural Sciences and Veterinary Medicine, 3-5 Manastur St., 400372 Cluj-Napoca, Romania
| | - Olimpia Smaranda Mintas
- Department of Animal Nutrition, Faculty of Environmental Protection, University of Oradea, 1 University St., 410087 Oradea, Romania; (D.M.); (O.S.M.)
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Stobiecka M, Król J, Brodziak A, Klebaniuk R, Kowalczuk-Vasilev E. Effects of Supplementation with an Herbal Mixture on the Antioxidant Capacity of Milk. Animals (Basel) 2023; 13:2013. [PMID: 37370523 DOI: 10.3390/ani13122013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 06/06/2023] [Accepted: 06/15/2023] [Indexed: 06/29/2023] Open
Abstract
The aim of this study was to assess the effect of the addition of a standardized herbal mixture to the feed ration for Holstein-Friesian cows on the antioxidant capacity of milk. The study was carried out on a farm specialized in breeding dairy cattle. The exact study involved 30 cows in lactation III, which were in the first phase of lactation at the beginning of the experiment (15 cows-control group; 15 cows-experimental group). The nutrition supplied to the cows was based on the TMR (total mixed ration) system, with roughage and concentrate fodder used as the basis of the feed ration. The addition of a standardized blend of dried herbs, i.e., oregano (Origanum vulgare), thyme (Thymus vulgaris), purple coneflower (Echinacea purpurea), and cinnamon bark (Cinnamomum zeylanicum), was the experimental factor. Powdered herbs were administered as a component of the concentrate fodder at the dose of 3% DM ration/day/head. Milk samples were collected four times during the experiment (term 0 after the colostrum period and then after lactation weeks 2, 4, and 6). The following parameters were determined in the milk: the basic chemical composition, i.e., the content of total protein, fat, lactose, and casein; somatic cell count; content of selected whey proteins (α-lactalbumin, β-lactoglobulin, lactoferrin, BSA); and fat-soluble vitamins (A, D3, E). Additionally, the milk antioxidant capacity (ABTS, FRAP, DPPH) was determined and the degree of antioxidant protection (DAP) was calculated. It was shown that the milk from cows receiving the herbal blend-supplemented fodder had a higher content of casein, compared to the control group. The herbal supplementation contributed to a significant increase in the content of bioactive compounds, i.e., selected whey proteins (β-lactoglobulin, lactoferrin) and lipophilic vitamins (A, E). The milk was also characterized by significantly higher antioxidant potential (regardless of the measurement method) and a higher degree of antioxidant protection (DAP).
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Affiliation(s)
- Magdalena Stobiecka
- Department of Quality Assessment and Processing of Animal Products, Faculty of Animal Sciences and Bioeconomy, University of Life Sciences in Lublin, Akademicka 13, 20-950 Lublin, Poland
| | - Jolanta Król
- Department of Quality Assessment and Processing of Animal Products, Faculty of Animal Sciences and Bioeconomy, University of Life Sciences in Lublin, Akademicka 13, 20-950 Lublin, Poland
| | - Aneta Brodziak
- Department of Quality Assessment and Processing of Animal Products, Faculty of Animal Sciences and Bioeconomy, University of Life Sciences in Lublin, Akademicka 13, 20-950 Lublin, Poland
| | - Renata Klebaniuk
- Institute of Animal Nutrition and Bromatology, Faculty of Animal Sciences and Bioeconomy, University of Life Sciences in Lublin, Akademicka 13, 20-950 Lublin, Poland
| | - Edyta Kowalczuk-Vasilev
- Institute of Animal Nutrition and Bromatology, Faculty of Animal Sciences and Bioeconomy, University of Life Sciences in Lublin, Akademicka 13, 20-950 Lublin, Poland
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ε-Polylysine Derived from Marine Bacteria-A Possible Natural Preservative for Raw Milk Storage. FERMENTATION-BASEL 2023. [DOI: 10.3390/fermentation9020156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
Despite the fact that researchers have been working on the preservation of raw milk at room temperature for several decades, most of the processes are limited to the use of chemical preservatives. One of the major problems of raw milk self-life is its spoilage at ambient temperature during the summer season. Therefore, in the present study, research has been conducted to control raw milk spoilage at 4 °C and 35 °C (considered in different regions’ ambient temperatures). ε-Polylysine, a natural preservative approved for food use, was isolated from the fermentation broth of Bacillus licheniformis PL26 grown in an M3G medium, and its antimicrobial preservation properties for milk applications were tested. The raw milk samples containing 0.02% w/v ε-polylysine could be stored at 4 °C for up to 16 days without spoilage, however, raw milk samples without ε-polylysine as preservative spoiled on the 8th day even at 4 °C refrigeration conditions. Raw milk containing 0.02% ε-polylysine in combination with 0.2% sodium bicarbonate (added to avoid acidification) could be stored at ambient temperature (35 °C) for up to 48 h. The changes in milk composition, especially of the casein, lactose, and fat stability, during storage under different conditions with/without ε-polylysine, were studied as well. The present study proves that ε-polylysine can be successfully used as a new biopreservative. Therefore, for the dairy industry, a natural preservative to store milk at room temperature during the summer season, replacing synthetic preservatives derived from renewable sources, can be proposed. Once again, marine bacteria seem to be one of the promising sustainable and renewable sources of biologically active compounds such as new food biopreservatives
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Mierlita D, Santa A, Mierlita S, Daraban SV, Suteu M, Pop IM, Mintas OS, Macri AM. The Effects of Feeding Milled Rapeseed Seeds with Different Forage:Concentrate Ratios in Jersey Dairy Cows on Milk Production, Milk Fatty Acid Composition, and Milk Antioxidant Capacity. LIFE (BASEL, SWITZERLAND) 2022; 13:life13010046. [PMID: 36675995 PMCID: PMC9862280 DOI: 10.3390/life13010046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 12/13/2022] [Accepted: 12/20/2022] [Indexed: 12/28/2022]
Abstract
We aimed to evaluate the effects of milled rapeseed (MR) supplementation of low- or high-concentrate diets on milk production and composition, fatty acids (FAs) profile, and antioxidant capacity. Sixteen Jersey dairy cows were used in a 4 × 4 Latin square design, for four periods of 4 weeks, and assigned to four treatments as a 2 × 2 factorial design. Dietary treatments consisted of iso-nitrogenated total mixed rations with high (65:35; LC-low concentrate) or low (50:50; HC-high concentrate) forage:concentrate (FC) ratios, supplemented with MR to provide 30 g oil/kg dry matter (DM) (LR and HR), or without MR supplement (L and H). Increasing the proportion of concentrates led to an increase in DM intake (DMI), net energy (NEL) intake, and milk production, but milk fat and protein content decreased. Supplementing diets with MR led to an increase in NEL intake and milk production, but did not affect DMI and milk composition. Diets supplemented with MR caused a decrease in the concentration of FAs with atherogenic effect and the increase in the level of FAs beneficial for human health (C18:1 cis-9, C18:1 trans-11, and C18:3 n-3), while the decrease in the FC ratio had a negative effect on omega-3 FAs. An improvement in the antioxidant capacity of milk was observed with diets with the high FC ratio but also by supplementing the feed with MR. These results could contribute to the development of effective strategies to improve the nutritional quality of milk without affecting the productive performance of cows.
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Affiliation(s)
- Daniel Mierlita
- Department of Animal Science, Faculty of Environmental Protection, University of Oradea, 1 University St., 410087 Oradea, Romania
- Doctoral School of Agricultural Engineering Sciences, University of Agricultural Sciences and Veterinary Medicine, 3-5 Manastur St., 400372 Cluj-Napoca, Romania
| | - Anita Santa
- Doctoral School of Agricultural Engineering Sciences, University of Agricultural Sciences and Veterinary Medicine, 3-5 Manastur St., 400372 Cluj-Napoca, Romania
| | - Stefania Mierlita
- Department of Accounting and Audit, Faculty of Economics and Business Administration, Babeş-Bolyai University, 58-60 Teodor Mihali St., 400372 Cluj-Napoca, Romania
| | - Stelian Vasile Daraban
- Department of Technological Science, Faculty of Animal Science and Biotechnologies, University of Agricultural Sciences and Veterinary Medicine, 3-5 Manastur St., 400372 Cluj-Napoca, Romania
- Correspondence:
| | - Mihai Suteu
- Department of Technological Science, Faculty of Animal Science and Biotechnologies, University of Agricultural Sciences and Veterinary Medicine, 3-5 Manastur St., 400372 Cluj-Napoca, Romania
| | - Ioan Mircea Pop
- Department of Animal Nutrition, Faculty of Food and Animal Sciences, Ion Ionescu de la Brad University of Life Sciences Iasi, 3 Mihail Sadoveanu Alley, 700490 Iasi, Romania
| | - Olimpia Smaranda Mintas
- Department of Animal Science, Faculty of Environmental Protection, University of Oradea, 1 University St., 410087 Oradea, Romania
| | - Adrian Maximilian Macri
- Department of Animal Nutrition, Faculty of Veterinary Medicine, University of Agricultural Sciences and Veterinary Medicine, 3-5 Manastur St., 400372 Cluj-Napoca, Romania
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Milk Yield and Milk Fatty Acids from Crossbred F1 Dairy Cows Fed on Tropical Grasses and Supplemented with Different Levels of Concentrate. Animals (Basel) 2022; 12:ani12192570. [PMID: 36230310 PMCID: PMC9559261 DOI: 10.3390/ani12192570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 09/21/2022] [Accepted: 09/22/2022] [Indexed: 11/16/2022] Open
Abstract
Simple Summary The objective of this study was to determine milk fatty acids (FA) from crossbred F1 dairy cows fed on tropical grasses and supplemented with different levels of concentrate. Milk yield and milk composition were not affected while very mild effects were found in milk fatty acids. Overall, this study shows that adding up to 450 g/kg of concentrate to crossbred F1 dairy cows fed on tropical grasses does not have negative effects on milk yield and milk quality. Therefore, under these production conditions, farmers can avoid the use of concentrate, rely on tropical grasses, and reduce feeding costs. Abstract The objective of this study was to determine milk fatty acids from crossbred F1 dairy cows fed on tropical grasses and supplemented with different levels of concentrate. Twelve dairy cows (50% Holstein × 50% Brahman) with 60 days of lactation grazing tropical grasses were assigned to a Switchback design, with three periods of 15 days with different concentrate levels: 0, 150, 300 and 450 g /kg. Milk samples were obtained on the last five days of each experimental period. Milk yield and milk composition were not affected. Cows fed with 300 g/kg of concentrate had higher contents of C15:0 (p = 0.004), C22:0 (p = 0.031), and C24:0 (p = 0.013). C17:1 cis9 was higher (p = 0.039) with 150 g/kg and lowest with 450 g/kg. C18:1 cis9 was higher (p = 0.042) with 150 g/kg. C18:2n6trans was higher (p = 0.05) with 300 g/kg and lower (p = 0.018) with 450 g/kg. This study shows that adding up to 450 g/kg of concentrate to crossbred F1 dairy cows fed on tropical grasses does not have negative effects on milk yield and milk quality. Therefore, under these production conditions, farmers can rely on tropical grasses and reduce feeding costs.
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