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1.
Luminescence ; 39(5): e4772, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38712470

RESUMO

The current study presents the first spectrofluorimetric approach for the estimation of lactoferrin, depending on the measurement of its native fluorescence at 337 nm after excitation at 230 nm, without the need for any hazardous chemicals or reagents. It was found that the fluorescence intensity versus concentration calibration plot was linear over the concentration range of 0.1-10.0 µg/mL with quantitation and detection limits of 0.082 and 0.027 µg/mL, respectively. The method was accordingly validated according to the ICH recommendations. The developed method was applied for the estimation of lactoferrin in different dosage forms, including capsules and sachets with high percent recoveries (97.84-102.53) and low %RSD values (<1.95). Lactoferrin is one of the key nutrients in milk powder and a significant nutritional fortifier. In order to assess the quality of milk powder, it is essential to rapidly and accurately quantify the lactoferrin content of the product. Therefore, the presented study was successfully applied for the selective estimation of lactoferrin in milk powder with acceptable percent recoveries (96.45-104.92) and %RSD values (≤3.607). Finally, the green profile of the method was estimated using two assessment tools: Green Analytical Procedure Index (GAPI) and Analytical GREEnness (AGREE), which demonstrated its excellent greenness.


Assuntos
Química Verde , Fórmulas Infantis , Lactoferrina , Preparações Farmacêuticas , Animais , Humanos , Lactente , Fórmulas Infantis/química , Fórmulas Infantis/análise , Lactoferrina/análise , Limite de Detecção , Leite/química , Preparações Farmacêuticas/análise , Preparações Farmacêuticas/química , Espectrometria de Fluorescência/métodos
2.
J Trace Elem Med Biol ; 84: 127457, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-38692231

RESUMO

The aim of this paper was the quantitative determination of some macro and trace elements, especially potentially toxic elements in the samples of infant baby formulae and baby food cereals commercially available in Serbia using the inductively coupled plasma optical emission spectrometry (ICP OES) method. Among the macro elements, K is the most abundant in all infant formulae samples, followed by Ca, P, Na and Mg. On the other hand, the analysis of food cereals showed that P is presents in the highest contents, followed by K, Ca, Na, and Mg. Potentially toxic elements As, Pb, Hg, and Cd were not detected in any sample of infant formulae, while Cd was detected and quantified in cereal foods. Also, the calculated values of Estimated Tolerable Weekly Intake (ETWI) as well as the Estimated Tolerable Monthly Intake (ETMI) were lower than recommended values for a tolerable weekly intake (TWI) and provisional tolerable monthly intake (PTMI).


Assuntos
Grão Comestível , Alimentos Infantis , Fórmulas Infantis , Oligoelementos , Sérvia , Grão Comestível/química , Humanos , Lactente , Oligoelementos/análise , Alimentos Infantis/análise , Fórmulas Infantis/análise , Fórmulas Infantis/química
3.
Molecules ; 29(9)2024 Apr 29.
Artigo em Inglês | MEDLINE | ID: mdl-38731536

RESUMO

The quality of fat in infant milk is determined by the fatty acid profile and selected indices describing nutritional value. The aim of this study was to analyze the fatty acid profile and lipid quality indices of infant formulas and compare these data with breast milk. The study material included seven types of cow's milk-based follow-on infant formulas and samples of mature breast milk. The determination of fatty acids was performed using the gas chromatography (GC) technique. Lipid quality indices were calculated based on the relevant equations. Infant formulas contained more medium-chain fatty acids (MCFAs) and oleic acid. Moreover, they contained more than 30% more linoleic acid and more than twice as much α-linolenic acid and docosahexaenoic acid. In contrast, significant amounts of trans fatty acids (TFAs) were noted in breast milk, while infant formulas contained trace amounts. Infant formulas were characterized by a lower AI (Index of Atherogenicity) (0.49-0.98) and TI (Index of Thrombogenicity) (0.48-0.60) and a higher H/H (hypocholesterolemic/hypercholesterolemic) ratio (1.93-2.30) compared with breast milk (1.47, 1.60, and 1.21, respectively). The composition of infant formulas depended on the type of fat added at the production stage and differed significantly from breast milk, particularly in terms of polyunsaturated fatty acids and lipid quality indices.


Assuntos
Ácidos Graxos , Fórmulas Infantis , Lipídeos , Leite Humano , Fórmulas Infantis/química , Fórmulas Infantis/análise , Humanos , Ácidos Graxos/análise , Leite Humano/química , Lactente , Lipídeos/análise , Feminino , Valor Nutritivo , Animais
4.
Carbohydr Res ; 541: 109149, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-38796900

RESUMO

As the evidence supporting the beneficial effects of human milk oligosaccharides (HMOs) grows, so does the commercial interest in their inclusion in infant formula products. This also requires analytical methods capable of their quantification from finished infant formula products as well as from premixed ingredients in some cases. The objective of the present study was the development and single-laboratory validation of a method that can be used for this purpose for seven HMOs: 2'-fucosyllactose (2'FL), 3-fucosyllactose (3FL), difucosyllactose (DFL), 3'-sialyllactose (3'SL), 6'-sialyllactose (6'SL), lacto-N-tetraose (LNT), and lacto-N-neotetraose (LNnT). The present method uses labeling by reductive amination, with 4-aminobenzoic acid ethyl ester (benzocaine) as the labeling reagent and picoline borane as the reducing agent, then applies HPLC separation with UV detection. The seven HMOs could be analyzed from infant formula and premix samples with recoveries between 91 and 108 %, relative standard deviations of 4.3 % or lower across all replicates, and limits of quantitation between 0.001 % and 0.004 % of powder sample by weight. The method was found to be rapid and reliable, with a runtime of only 14 min per injection, in contrast to other methods found in literature which typically use nearly or more than an hour. In addition, it uses instrumentation that's readily available in most analytical laboratories.


Assuntos
Fórmulas Infantis , Leite Humano , Oligossacarídeos , Oligossacarídeos/análise , Oligossacarídeos/química , Leite Humano/química , Humanos , Fórmulas Infantis/química , Fórmulas Infantis/análise , Cromatografia Líquida de Alta Pressão/métodos , Lactente , Fatores de Tempo , Trissacarídeos
5.
Artigo em Inglês | MEDLINE | ID: mdl-38422382

RESUMO

Glycidyl esters (GEs) and 3-monochloropropanediol esters (3-MCPDEs) are process contaminants commonly found in refined edible oils which are often added to infant formulas. The Taiwan Food and Drug Administration (TFDA) launched regulations for GEs in infant formulas that went into effect on 1 July 2021. To investigate levels of GEs and 3-MCPDEs in infant formula powder, 45 products were sampled and analysed during 2020-2021. The contents of GEs and 3-MCPDEs in formulas of different brands significantly varied, but their concentrations in all of the formulas complied with European Union (EU) regulations. Infant formulas containing palm oil had significantly higher 3-MCPDE levels in both extracted oils and milk powder than those without palm oil. Concentrations of GEs and 3-MCPDEs in infant formula powder and extracted oils were significantly lower in products from Europe than those from Australia and New Zealand. Infants aged 0-1 years in Taiwan who consumed only infant formula showed a margin of exposure (MoE) exceeding 25,000. Mean consumer exposures to 3-MCPDEs stayed below the tolerable daily intake (TDI), while high exposures at the 95th percentile (P95) exceeded the TDI by 1.7-fold. Herein, we present the changing trends in the risk assessment results of infant formula across various countries in the decade. Implementation of regulations and mitigation strategy effectively reduced the risk of infants being exposed to GEs and 3-MCPDEs through infant formula.


Assuntos
Fórmulas Infantis , Propilenoglicóis , alfa-Cloridrina , Lactente , Humanos , Óleo de Palmeira , Fórmulas Infantis/análise , alfa-Cloridrina/análise , Ésteres/análise , Pós , Taiwan , Contaminação de Alimentos/análise , Medição de Risco , Óleos de Plantas/análise
6.
Food Chem ; 440: 138246, 2024 May 15.
Artigo em Inglês | MEDLINE | ID: mdl-38154286

RESUMO

Microplastics (MPs) are plastic particles between 0.1 and 5,000 µm in size that can contaminate food. Unfortunately, to date, little attention has been paid to analyzing the presence of such particles in baby foods. The present study aimed to determine the degree of contamination of infant formula with MPs. A total of thirty products were subjected to analysis. The research methodology used included the isolation of plastic particles, identification and characterization of MPs using advanced microscopic and spectroscopic techniques. Microplastics were detected in all tested samples. The most frequently identified polymers were polyamide, polyethylene, polypropylene, and poly(ethylene terephthalate). The particles exhibited diverse forms, including fibers, fragments, and films, displaying a range of colors such as colorless, black, and brown particles. Furthermore, the daily intake of MPs by children fed exclusively infant formula was estimated to be approximately 49 ± 32 MPs. This poses a potential health risk for the youngest.


Assuntos
Microplásticos , Poluentes Químicos da Água , Criança , Humanos , Microplásticos/análise , Plásticos , Fórmulas Infantis/análise , Poluentes Químicos da Água/análise , Monitoramento Ambiental
7.
J AOAC Int ; 107(2): 303-319, 2024 Mar 01.
Artigo em Inglês | MEDLINE | ID: mdl-38141208

RESUMO

BACKGROUND: A method for sugar profile analysis granted First Action 2018.16 was subjected to a multi-laboratory study. OBJECTIVE: Perform a multi-laboratory study with this method to determine the performance parameters of repeatability and reproducibility against the AOAC Standard Method Performance Requirements (AOAC SMPR 2018.001) for Final Action status. METHODS: Eleven laboratories from three different countries participated in the study. Each laboratory was provided practice materials for successful method setup. Each laboratory then proceeded with analysis of blind duplicates of 10 different products covering the scope of the method. Results were reported to the study directors with any modifications and assessed following the procedures of Appendix D of the AOAC Official Methods of AnalysisSM (guidelines for collaborative study procedures). RESULTS: The majority of results from the study met the SMPR requirements. The data is presented along with any outlying observations or modifications. The method was proven to be flexible across different instrumentation and laboratories, and the method was updated to provide further system suitability and guidelines to maintain the performance of the method across the large scope of matrixes. CONCLUSION: The results from the collaborative study supported the method for Final Action status. The Expert Review Panel reviewed and voted to move the method forward to Final Action and was followed by review from the Official Methods Board and granted approval. HIGHLIGHTS: The method was granted Final Action Official Methods status.


Assuntos
Fórmulas Infantis , Açúcares , Animais , Fórmulas Infantis/análise , Reprodutibilidade dos Testes , Suplementos Nutricionais/análise , Cromatografia , Ração Animal/análise , Ânions
8.
J Agric Food Chem ; 72(1): 773-782, 2024 Jan 10.
Artigo em Inglês | MEDLINE | ID: mdl-38109498

RESUMO

Infant formula is intended as an effective substitute for breast milk but is the main source of polychlorinated naphthalenes (PCNs) to nonbreastfed infants. We performed target and nontarget analyses to determine PCNs and identify other organic contaminants in infant formula. The mean PCN concentrations in infant formula, milk powder, and bovine milk were 106.1, 88.8, and 78.2 µg kg-1 of dry weight, respectively. The PCN congener profiles indicated that thermal processes and raw materials were probably the main sources of PCNs in infant formula. A health risk assessment indicated that PCNs in infant formula do not pose health risks to infants. Using gas chromatography-Orbitrap mass spectrometry, 352, 372, and 161 organic chemicals were identified in the infant formula, milk powder, and bovine milk samples, respectively. Phthalate esters were detected in all four plastic-packed milk powder samples. The results indicated milk becomes more contaminated with organic chemicals during manufacturing, processing, and packaging.


Assuntos
Fórmulas Infantis , Naftalenos , Lactente , Humanos , Pós , Naftalenos/análise , Fórmulas Infantis/análise , Cromatografia Gasosa-Espectrometria de Massas , Leite Humano/química , Monitoramento Ambiental
9.
J Agric Food Chem ; 72(1): 670-678, 2024 Jan 10.
Artigo em Inglês | MEDLINE | ID: mdl-38135877

RESUMO

Human milk is important for infant growth, and oligosaccharides are one of its main functional nutrients. To enable a systematic comparison of free oligosaccharide and glycoconjugate content in milk from different species, the phenol-sulfuric acid and resorcinol assays were combined to determine the content. Using real samples, the method revealed that human milk contained the highest amount of total, neutral (9.84 ± 0.31 g/L), and sialylated (3.21 ± 0.11 g/L) free oligosaccharides, followed by goat milk, with neutral (0.135 ± 0.015 g/L) and sialylated (0.192 ± 0.016 g/L) free oligosaccharides and at a distance by bovine and yak milk. The highest total glycoconjugate content was detected in yak milk (0.798 ± 0.011 g/L), followed by human, bovine, and goat milk. These findings suggest that goat milk is the best source of free oligosaccharides in infant formula and functional dairy products and yak milk is the best source of glycoconjugates.


Assuntos
Leite Humano , Leite , Lactente , Animais , Bovinos , Humanos , Leite/química , Leite Humano/química , Oligossacarídeos/análise , Glicoconjugados , Fórmulas Infantis/análise , Cabras
10.
Nutrients ; 15(21)2023 Nov 04.
Artigo em Inglês | MEDLINE | ID: mdl-37960327

RESUMO

The evaluation of secondary parameters of a prospective, randomised, controlled, multicentre intervention trial aimed to analyse gastrointestinal tolerance of an infant formula manufactured from extensively hydrolysed whey protein (eHF) compared to intact cow's milk protein (control formula, CF) in healthy term infants. Infants ≤ 25 days of age, who were exclusively formula-fed, were randomised to receive eHF or CF for at least three months up to 120 days of age. An exclusively breastfed reference group (BF) was included for descriptive comparison. Infants' gastrointestinal tolerance was evaluated based on stool parameters, the Amsterdam Infant Stool Scale (AISS), the Infant Gastrointestinal Symptom Questionnaire (IGSQ), and sleeping patterns. Of 359 infants included, 297 randomised (eHF: n = 149, CF: n = 148) and 41 BF infants completed the study per protocol. All tolerance parameters were comparable between eHF and CF. Stool was predominantly soft and yellow in colour. Stool was more frequently green in eHF than CF. BF infants had more frequent stools, which were mainly watery or soft and yellow, and comparable IGSQ scores (descriptive). Irrespective of group, all gastrointestinal and sleep parameters showed signs of maturation with increasing age. In conclusion, eHF showed gastrointestinal tolerance as good as CF in healthy infants. Both formulae were well-tolerated.


Assuntos
Gastroenteropatias , Hipersensibilidade a Leite , Animais , Feminino , Bovinos , Lactente , Humanos , Fórmulas Infantis/análise , Estudos Prospectivos , Aleitamento Materno , Proteínas do Soro do Leite , Fezes
11.
Artigo em Inglês | MEDLINE | ID: mdl-37682685

RESUMO

Esters of 2- and 3-monochloropropanediol (2-MCPDE, 3-MCPDE) and glycidol (GE) are regarded as process contaminants that are found in refined vegetable oils and oil-based foods. Since glycerol is produced during fat splitting, saponification and biodiesel production, it is important to have methods for determining contaminants that might be formed during these processes. Due to the use of glycerol as a food additive, data on the presence of compounds of toxicological concern, including 3-MCPD, are of interest. This study focuses on modifying the indirect analysis of 2-MCPDE, 3-MCPDE and GE using GC-MS based on the AOCS Official Method Cd 29a-13, validating the modified method, and quantifying 2-MCPDE, 3-MCPDE and GE in glycerol. The AOCS Cd 29a-13 method was modified at the initial stage of sample preparation in which the targeted esters were extracted from glycerol by vortex-assisted extraction before sample analysis. This modification was performed based on the polarity of all compounds involved. The calibration functions for all analytes were fitted to linear regression with R2 above 0.99. Limits of detection (LOD) 0.02, 0.01 and 0.02 mg kg-1 were obtained for 2-MCPDE, 3-MCPDE and GE, respectively. Spiked glycerol with 3-MCPDE and 2-MCPDE (0.25, 0.51 and 1.01 mg kg-1) and GE (0.58, 1.16 and 2.32 mg kg-1) were used for recovery and precision measurements. Recoveries of 100-108%, 101-103%, and 93-99% were obtained for 2-MCPDE, 3-MCPDE and GE, respectively. Acceptable precision levels with relative standard deviations ranged from 3.3% to 8.3% were obtained for repeatability and intermediate precision. The validated method was successfully applied for the analysis of the target compounds in refined glycerol from commercial plants, which showed that 2-MCPDE, 3-MCPDE and GE levels in the analysed samples were below the detection limit.


Assuntos
alfa-Cloridrina , Cromatografia Gasosa-Espectrometria de Massas , alfa-Cloridrina/análise , Glicerol/análise , Ésteres/análise , Cádmio/análise , Contaminação de Alimentos/análise , Óleos de Plantas/análise , Fórmulas Infantis/análise
12.
Food Chem Toxicol ; 179: 113978, 2023 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-37532171

RESUMO

3-monochloropropane-1,2-diol esters (3-MCPDEs) and glycidyl esters (GEs) are food contaminants and have arisen continuous attention due to their toxicity, especially towards infants. Current risk assessment of these contaminants was mostly employing deterministic approaches, lacking quantitative characterization of the likelihood, incidence, or severity of the risks involved. Herein, 3-MCPDE and GE levels in 46 representative infant formulas (IFs) from Chinese market were determined by GC-MS/MS. Then, combining the occurrence data and consumption data from China National Food Consumption Survey, the Monte Carlo simulation-based probabilistic model for risk assessment of 3-MCPDEs and GEs in IFs from Chinese market was established. The results showed that all P90 (90th percentiles) hazard quotient values were below 1, demonstrating 3-MCPDEs didn't pose health risks to most populations aged 0-36 months old. However, for 0-12 months old groups, P10 (10th percentiles) margin of exposure values were all below 25000, indicating GEs may pose potential risks to 10% of this group. Uncertainty analysis revealed that the probabilistic model had considered uncertainties of model input and distribution, and realized refined assessment. This study is the first report on probabilistic assessment of 3-MCPDEs and GEs in IFs, which also provided references for the formulation of related regulatory limits in China.


Assuntos
Contaminação de Alimentos , alfa-Cloridrina , Lactente , Humanos , Recém-Nascido , Pré-Escolar , Contaminação de Alimentos/análise , Fórmulas Infantis/análise , Ésteres , Espectrometria de Massas em Tandem , Método de Monte Carlo , alfa-Cloridrina/análise , Medição de Risco
13.
Nutrients ; 15(14)2023 Jul 10.
Artigo em Inglês | MEDLINE | ID: mdl-37513505

RESUMO

Breastmilk is the optimal source of infant nutrition, with short-term and long-term health benefits. Some of these benefits are mediated by human milk oligosaccharides (HMOs), a unique group of carbohydrates representing the third most abundant solid component of human milk. We performed the first clinical study on infant formula supplemented with five different HMOs (5HMO-mix), comprising 2'-fucosyllactose, 3-fucosyllactose, lacto-N-tetraose, 3'-sialyllactose and 6'-sialyllactose at a natural total concentration of 5.75 g/L, and here report the analysis of the infant fecal microbiome. We found an increase in the relative abundance of bifidobacteria in the 5HMO-mix cohort compared with the formula-fed control, specifically affecting bifidobacteria that can produce aromatic lactic acids. 5HMO-mix influenced the microbial composition as early as Week 1, and the observed changes persisted to at least Week 16, including a relative decrease in species with opportunistic pathogenic strains down to the level observed in breastfed infants during the first 4 weeks. We further analyzed the functional potential of the microbiome and observed features shared between 5HMO-mix-supplemented and breastfed infants, such as a relative enrichment in mucus and tyrosine degradation, with the latter possibly being linked to the aromatic lactic acids. The 5HMO-mix supplement, therefore, shifts the infant fecal microbiome closer to that of breastfed infants.


Assuntos
Aleitamento Materno , Microbiota , Humanos , Lactente , Feminino , Leite Humano/química , Fórmulas Infantis/análise , Oligossacarídeos/análise
14.
J AOAC Int ; 106(6): 1505-1524, 2023 Nov 02.
Artigo em Inglês | MEDLINE | ID: mdl-37462536

RESUMO

BACKGROUND: Chlorate is an effective herbicide, but also a byproduct of chlorinating agents used to disinfect water, which is one of the reasons why it is regularly found in food. Perchlorate is a ubiquitous contaminant, which is naturally occurring in the environment but also released from anthropogenic sources such as the industrial use of certain natural fertilizers. Chlorate affects the hematological system, and perchlorate the thyroid. OBJECTIVE: Implement and validate a simple and robust analytical method for the accurate determination of chlorate and perchlorate in baby food, infant and adult formulas, and ingredients thereof, which is suited for its application in routine environments where a broad variety of food commodities must be analyzed simultaneously. METHOD: Typically, analytes are extracted with a mixture of water, acidified methanol, and dichloromethane. Optionally, for dairy products and byproducts, extraction can be performed with water, acidified methanol, and EDTA, followed by two steps of cleanup (freezing out and dispersive solid-phase extraction with C18 in acetonitrile). Quantitative determination is carried out by isotopic dilution liquid chromatography tandem mass spectrometry (LC-MS/MS). RESULTS: The method was single-laboratory validated in five Nestlé Quality Assurance Centers (NQACs) in a comprehensive range of representative matrixes of different categories such as baby foods, infant/adult formulas, and ingredients, with results generally in agreement with the acceptance criteria of the Standard Method Performance Requirement (SMPR®) 2021.001 defined by AOAC INTERNATIONAL, in terms of representative matrixes validated, LOQs, trueness, and precision.The data generated during validation show that the method proposed is simple, accurate and robust enough to be implemented and applied in routine environments. CONCLUSION: The data generated during validation show that the method proposed is simple, accurate and robust enough to be implemented and applied in routine environments. HIGHLIGHTS: The AOAC Expert Review Panel approved the present method as AOAC Official First Action 2022.06.


Assuntos
Cloratos , Espectrometria de Massas em Tandem , Humanos , Lactente , Adulto , Cromatografia Líquida/métodos , Cloratos/análise , Percloratos/análise , Metanol , Fórmulas Infantis/análise , Água , Cromatografia Líquida de Alta Pressão
15.
Artigo em Inglês | MEDLINE | ID: mdl-37410932

RESUMO

To enable the monitoring of a wide scope of per- and polyfluoroalkyl substances (PFAS) in the ng/kg level in foodstuffs, an LC-MS/MS method comprising 57 analytes was developed and validated in seven different matrices (milk powder, milk-based infant formula, meat-based baby food puree, fish and fish oil, fresh egg, and soluble coffee). The analytical approach was based on an acetonitrile:water extraction followed by solid phase extraction clean-up with subsequent quantification of the extracted analytes either by isotope dilution (55 compounds) or by standard addition (2 compounds) mass spectrometry. The validation criteria followed the guidance document for the analysis of PFAS issued by the European Union Reference Laboratory for Halogenated Persistent Organic Pollutants. The lowest limits of quantification (LOQs) for the four recently regulated compounds (L-PFOS, PFOA, PFNA, L-PFHxS) were set at 0.010 µg/kg in baby and infant foods (as sold) but also in dairy ingredients. Exception was for PFOA in milk powder due to too large variability in the repeatability. Applicability of the method was further demonstrated in 37 commodity check matrices. Overall validation data demonstrated the robustness of the method for most of the compounds and the LOQs achieved were low enough to ensure compliance with Commission Regulation EU 2022/2388 but also to support future collection of occurrence data in ng/kg level in food.


Assuntos
Fluorocarbonos , Espectrometria de Massas em Tandem , Animais , Cromatografia Líquida , Pós/análise , Leite/química , Fórmulas Infantis/análise , Fluorocarbonos/análise
16.
J Dairy Sci ; 106(9): 5970-5987, 2023 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-37500443

RESUMO

Aroma is an important attribute of infant formula (IF). In this study, 218 volatiles and 62 odor-active compounds were detected from IF by dynamic headspace sampling combined with comprehensive 2-dimensional gas chromatography-olfactometry-mass spectrometry. Aldehydes and ketones were determined as the most abundant odor-active compounds. Among them, the contents of pentanal and hexanal were the most abundant, while 1-octen-3-one had the highest flavor dilution factor and odor activity value in most of the IF. Sensory evaluation and electronic nose analysis showed that the skimming process, the fatty acid composition, and powdered or liquid milk base used for the production of IF may be important factors resulting in their differences in aroma profiles and compounds. These differences were assumed to be mainly ascribed to the Maillard reaction and lipid oxidation, which were largely influenced by the temperature and water activity.


Assuntos
Odorantes , Compostos Orgânicos Voláteis , Animais , Odorantes/análise , Fórmulas Infantis/análise , Compostos Orgânicos Voláteis/análise , Olfatometria/métodos , Olfatometria/veterinária , Leite/química
17.
J AOAC Int ; 106(5): 1230-1236, 2023 Sep 01.
Artigo em Inglês | MEDLINE | ID: mdl-37389424

RESUMO

BACKGROUND: Taurine is recognized as an essential growth factor and as being critical in the maintenance of functional tissue regulation. OBJECTIVE: To evaluate the analytical performance of a hydrophilic interaction liquid chromatography-tandem mass spectrometry (HILIC-MS/MS) method for compliance with AOAC Standard Method Performance Requirements (SMPR®) for taurine analysis described in SMPR 2014.013. METHOD: Following protein precipitation with Carrez solutions, taurine is extracted and separated by HILIC with detection by triple quadrupole MS using multiple reaction monitoring (MRM). Stable isotope labeled (SIL) taurine internal standard is used for quantification to correct for losses in extraction and variations in ionization in the ion source. RESULTS: The method was shown to meet the requirements specified in the SMPR with a linear range of 0.27-2700 mg/hg RTF (ready-to-feed), a limit of detection of 0.14 mg/hg RTF, acceptable recovery of 97.2-100.1%, and acceptable repeatability of 1.6-6.4% relative standard deviation. Additionally, the method was found to have no statistically significant bias compared with reference values for National Institute of Standards and Technology (NIST) 1849a certified reference material (CRM) (P-value = 0.95) and 1869 CRM (P-value = 0.31), and with results from AOAC 997.05 (P-value = 0.10). CONCLUSIONS: A recent review of the method and validation data by the Stakeholder Program on Infant Formula and Adult Nutritionals (SPIFAN) Expert Review Panel (ERP) found that this method met all the criteria for analysis of taurine specified in SMPR 2014.013 and voted to adopt this method as First Action AOAC Official MethodSM2022.03. HIGHLIGHTS: A method for the analysis of taurine in infant formulas and adult nutritionals by HILIC-MS/MS is described. A single-laboratory validation (SLV) study demonstrated the applicability of the method to meet requirements of SMPR 2014.013. In December 2022, the SPIFAN ERP voted to adopt this method as First Action AOAC Official Method 2022.03.


Assuntos
Fórmulas Infantis , Mercúrio , Lactente , Humanos , Adulto , Fórmulas Infantis/análise , Taurina/análise , Espectrometria de Massas em Tandem/métodos , Cromatografia Líquida/métodos , Interações Hidrofóbicas e Hidrofílicas , Mercúrio/análise , Alimentos Formulados/análise
18.
Food Chem ; 423: 136302, 2023 Oct 15.
Artigo em Inglês | MEDLINE | ID: mdl-37167671

RESUMO

Infant formula is related to children's life and health. However, the existing identification methods for infant formula are time-consuming, costly and prone to environmental pollution. Therefore, a simple, efficient and less polluting identification method for infant formula is urgently needed. The aim of this study was to distinguish between goat and cow infant formula using HS-SPME-GC-MS and E-nose combined with triple-channel models. The results indicated that the main difference of them attributed to thirteen volatile compounds and three sensor variables. Based on this, the linear discriminant and partial least squares discriminant analyses were conducted, and a multilayer perceptron neural network model was constructed to identify the commercial samples. There was a high percentage of correct classifications (>90%) in samples. Together, our work demonstrated that the volatile compounds of infant formula combined with chemometric analysis were effective and rapid for detecting two infant formulas.


Assuntos
Fórmulas Infantis , Compostos Orgânicos Voláteis , Animais , Bovinos , Feminino , Fórmulas Infantis/análise , Cromatografia Gasosa-Espectrometria de Massas/métodos , Análise Discriminante , Nariz Eletrônico , Análise dos Mínimos Quadrados , Cabras , Compostos Orgânicos Voláteis/análise , Microextração em Fase Sólida/métodos
19.
Ecotoxicol Environ Saf ; 256: 114854, 2023 May.
Artigo em Inglês | MEDLINE | ID: mdl-37018855

RESUMO

The presence of melamine in food is one of the most significant threats to consumer health and food safety now confronting the communities. The goal of this systematic review and meta-analysis was to determine the melamine content of different food products available on the Iranian market. The pooled melamine concentration (95% confidence interval) on 484 samples of animal-based foodstuffs was as follows: 0.22 (0.08, 0.36 mg kg-1) for milk, 0.39 (0.25, 0.53 mg kg-1) for coffee mate, 1.45 (1.36, 1.54 mg kg-1) for dairy cream, 0.90 (0.50, 1.29 mg kg-1) for yoghurt, 1.25 (1.20, 1.29 mg kg-1) for cheese, 0.81 (-0.16, 1.78 mg kg-1) for hen eggs, 1.28 (1.25, 1.31 mg kg-1) for poultry meat, 0.58 (0.35, 0.80 mg kg-1) for chocolates, and 0.98 (0.18, 1.78 mg kg-1) for infant formula. Based on the results of health risk assessment study on toddlers under 2 years old who ingested infant formula (as a melamine-sensitive group), all groups of toddlers are at an acceptable level of non-carcinogenic risk (THQ ≤ 1). Toddlers were classified according to their ILCR (carcinogenic risk) levels due to infant formula consumption as follows: under 6 months (0.0000056), 6-12 months (0.0000077), 12-18 months (0.0000102), and 18-24 months (0.0000117). The melamine carcinogenicity in infant formula for children had an ILCR value of 0.000001-0.0001 in the investigation, which was considerable risk. According to the findings, Iranian food products (notably infant formula) should be analyzed for melamine contamination on a regular basis.


Assuntos
Contaminação de Alimentos , Fórmulas Infantis , Animais , Feminino , Irã (Geográfico) , Fórmulas Infantis/análise , Contaminação de Alimentos/análise , Galinhas , Medição de Risco , Triazinas/análise
20.
Nutrients ; 15(4)2023 Feb 07.
Artigo em Inglês | MEDLINE | ID: mdl-36839210

RESUMO

There is scarce evidence about early nutrition programming of dynamic aspects of glucose homeostasis. We analyzed the long-term effects of early nutrition on glycemic variability in healthy children. A total of 92 children participating in the COGNIS study were considered for this analysis, who were fed with: a standard infant formula (SF, n = 32), an experimental formula (EF, n = 32), supplemented with milk fat globule membrane (MFGM) components, long-chain polyunsaturated fatty acids (LC-PUFAs), and synbiotics, or were breastfed (BF, n = 28). At 6 years old, BF children had lower mean glucose levels and higher multiscale sample entropy (MSE) compared to those fed with SF. No differences in MSE were found between EF and BF groups. Normal and slow weight gain velocity during the first 6 months of life were associated with higher MSE at 6 years, suggesting an early programming effect against later metabolic disorders, thus similarly to what we observed in breastfed children. Conclusion: According to our results, BF and normal/slow weight gain velocity during early life seem to protect against glucose homeostasis dysregulation at 6 years old. EF shows functional similarities to BF regarding children's glucose variability. The detection of glucose dysregulation in healthy children would help to develop strategies to prevent the onset of metabolic disorders in adulthood.


Assuntos
Fórmulas Infantis , Leite Humano , Lactente , Feminino , Humanos , Criança , Fórmulas Infantis/análise , Seguimentos , Aleitamento Materno , Ácidos Graxos , Aumento de Peso , Homeostase
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