1
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Dold CA, Bavaro SL, Chen Y, Callanan MJ, Kennedy D, Cassidy J, Tobin J, Sahin AW, Lawlor PG, Brodkorb A, Giblin L. Infant milk formula, produced by membrane filtration, promotes mucus production in the upper small intestine of young pigs. Food Res Int 2024; 187:114343. [PMID: 38763636 DOI: 10.1016/j.foodres.2024.114343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 04/15/2024] [Accepted: 04/17/2024] [Indexed: 05/21/2024]
Abstract
Human breast milk promotes maturation of the infant gastrointestinal barrier, including the promotion of mucus production. In the quest to produce next generation infant milk formula (IMF), we have produced IMF by membrane filtration (MEM-IMF). With a higher quantity of native whey protein, MEM-IMF more closely mimics human breast milk than IMF produced using conventional heat treatment (HT-IMF). After a 4-week dietary intervention in young pigs, animals fed a MEM-IMF diet had a higher number of goblet cells, acidic mucus and mucin-2 in the jejunum compared to pigs fed HT-IMF (P < 0.05). In the duodenum, MEM-IMF fed pigs had increased trypsin activity in the gut lumen, increased mRNA transcript levels of claudin 1 in the mucosal scrapings and increased lactase activity in brush border membrane vesicles than those pigs fed HT-IMF (P < 0.05). In conclusion, MEM-IMF is superior to HT-IMF in the promotion of mucus production in the young gut.
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Affiliation(s)
- Cathal A Dold
- Teagasc Food Research Centre, Moorepark, Fermoy, Co. Cork, P61 C996, Ireland; School of Food and Nutritional Sciences, University College Cork, Cork T12 CY82, Ireland.
| | - Simona L Bavaro
- ISPA-CNR, Institute of Sciences of Food Production of National Research Council of Italy, Via Provinciale Lecce-Monteroni, 73100 Lecce, Italy.
| | - Yihong Chen
- Teagasc Food Research Centre, Moorepark, Fermoy, Co. Cork, P61 C996, Ireland.
| | - Michael J Callanan
- Department of Biological Sciences, Munster Technological University, Cork T12 P928, Ireland.
| | - Deirdre Kennedy
- Teagasc Food Research Centre, Moorepark, Fermoy, Co. Cork, P61 C996, Ireland.
| | - Joe Cassidy
- School of Veterinary Medicine, Veterinary Science Centre, University College Dublin, Belfield, Dublin 4, Ireland.
| | - John Tobin
- Teagasc Food Research Centre, Moorepark, Fermoy, Co. Cork, P61 C996, Ireland.
| | - Aylin W Sahin
- School of Food and Nutritional Sciences, University College Cork, Cork T12 CY82, Ireland.
| | - Peadar G Lawlor
- Pig Development Department, Teagasc Animal and Grassland Research and Innovation Centre, Moorepark, Fermoy, Co. Cork, P61 C996, Ireland.
| | - André Brodkorb
- Teagasc Food Research Centre, Moorepark, Fermoy, Co. Cork, P61 C996, Ireland.
| | - Linda Giblin
- Teagasc Food Research Centre, Moorepark, Fermoy, Co. Cork, P61 C996, Ireland.
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2
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Yu J, Lu H, Zhang X, Tang J, Liu Z, Jin Q, Wei W, Wang X. The triacylglycerol structures are key factors influencing lipid digestion in preterm formulas during in vitro digestion. Food Chem 2024; 443:138546. [PMID: 38301557 DOI: 10.1016/j.foodchem.2024.138546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 01/16/2024] [Accepted: 01/21/2024] [Indexed: 02/03/2024]
Abstract
Preterm formulas are usually supplemented with medium-chain triacylglycerols (MCT) whereas breast milk contains more medium and long-chain triacylglycerols (MLCT). Different types of triacylglycerol (TAG) containing medium-chain fatty acids may influence lipid digestion. In this study, the digestive characteristics of breast milk and preterm formulas with different MCT contents were evaluated using a dynamic in vitro system simulating the gastrointestinal tract of preterm infants. The lipolysis products, including diacylglycerols, monoacylglycerols (MAGs), free fatty acids, and undigested TAGs, were analyzed. Formulas with MCT addition has significantly (P < 0.05) lower lipolysis degree (LD, 69.35%-71.28%) than breast milk (76.93%). Higher amounts of C8:0 and C10:0 were released in the formulas with MCT addition. Breast milk released more C18:1n-9, C18:2n-6, and MAG containing C16:0, whereas formulas released more free C16:0. The Pearson correlation heatmap showed that the LD value was significantly and positively (P < 0.05) related to the MLCT and sn-2 C16:0 content.
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Affiliation(s)
- Jiahui Yu
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, School of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Huijia Lu
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, School of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Xinghe Zhang
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, School of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Juncheng Tang
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, School of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Zuoliang Liu
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, School of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Qingzhe Jin
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, School of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Wei Wei
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, School of Food Science and Technology, Jiangnan University, Wuxi, China.
| | - Xingguo Wang
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, School of Food Science and Technology, Jiangnan University, Wuxi, China.
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3
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Huppertz T, Shkembi B, Brader L, Geurts J. Dairy Matrix Effects: Physicochemical Properties Underlying a Multifaceted Paradigm. Nutrients 2024; 16:943. [PMID: 38612977 PMCID: PMC11013626 DOI: 10.3390/nu16070943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2024] [Revised: 03/22/2024] [Accepted: 03/23/2024] [Indexed: 04/14/2024] Open
Abstract
When food products are often considered only as a source of individual nutrients or a collection of nutrients, this overlooks the importance of interactions between nutrients, but also interactions between nutrients and other constituents of food, i.e., the product matrix. This product matrix, which can be defined as 'The components of the product, their interactions, their structural organization within the product and the resultant physicochemical properties of the product', plays a critical role in determining important product properties, such as product stability, sensory properties and nutritional and health outcomes. Such matrix effects can be defined as 'the functional outcome of specific component(s) as part of a specific product matrix'. In this article, dairy matrix effects are reviewed, with particular emphasis on the nutrition and health impact of dairy products. Such matrix effects are critical in explaining many effects of milk and dairy products on human nutrition and health that cannot be explained solely based on nutrient composition. Examples hereof include the low glycemic responses of milk and dairy products, the positive impact on dental health, the controlled amino acid absorption and the absence of CVD risk despite the presence of saturated fatty acids. Particularly, the changes occurring in the stomach, including, e.g., coagulation of casein micelles and creaming of aggregated fat globules, play a critical role in determining the kinetics of nutrient release and absorption.
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Affiliation(s)
- Thom Huppertz
- Food Quality & Design Group, Wageningen University & Research, 6808 WG Wageningen, The Netherlands
- FrieslandCampina, 3818 LE Amersfoort, The Netherlands;
| | - Blerina Shkembi
- Food Quality & Design Group, Wageningen University & Research, 6808 WG Wageningen, The Netherlands
| | - Lea Brader
- Arla Innovation Center, 8200 Aarhus, Denmark
| | - Jan Geurts
- FrieslandCampina, 3818 LE Amersfoort, The Netherlands;
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4
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Zhang S, Hao J, Xie Q, Pi X, Peng Z, Sun Y, Cheng J. pH-induced physiochemical and structural changes of milk proteins mixtures and its effect on foaming behavior. Int J Biol Macromol 2024; 254:127838. [PMID: 37923034 DOI: 10.1016/j.ijbiomac.2023.127838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 10/18/2023] [Accepted: 10/31/2023] [Indexed: 11/07/2023]
Abstract
Milk proteins are well known to produce aerated food due to the amphiphilicity. However, milk proteins are commonly added in blends for the desirable properties in food industry. In this study, the foaming properties of milk protein mixtures (MPM), a mixtures of whey protein isolated (WPI) and milk protein concentrate (MPC), was studied through foaming capacity (FC), foam stability (FS), and foam morphology at pH 3.0-9.0. Physiochemical, structural, surface properties, and Pearson correlation analysis were measured to gain insight into foaming behavior. Results indicated that MPM showed excellent FC (113.0-114.3 %) and FS (90.7-93.0 %) at pH 6.0-9.0, and foam displayed a smaller size and uniform distribution. MPM solutions showed smaller particles, higher solubility, and lower apparent viscosity at pH 6.0-9.0, which resulted in an increase in surface pressure and adsorption rate (Kdiff), facilitating more protein absorbed to interface. To further investigate structural changes, various spectral methods were used, in which the structure of MPM was changed with pH. Correlation analysis further suggests that Kdiff and solubility positively affect the formation of foam, while free sulfhydryl and β-sheet contributed to stabilizing foams. These findings provide valuable information on MPM as ingredients for aerated foods under acidic, neutral, and alkaline conditions.
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Affiliation(s)
- Siyu Zhang
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China
| | - Junli Hao
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China
| | - Qinggang Xie
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China; HeiLongJiang FeiHe Dairy Co., Ltd., Beijing 100015, China
| | - Xiaowen Pi
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China
| | - Zeyu Peng
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China
| | - Yuxue Sun
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China.
| | - Jianjun Cheng
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China.
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5
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Hettinga K, Pellis L, Rombouts W, Du X, Grigorean G, Lönnerdal B. Effect of pH and protein composition on proteolysis of goat milk proteins by pepsin and pancreatin. Food Res Int 2023; 173:113294. [PMID: 37803606 DOI: 10.1016/j.foodres.2023.113294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 07/15/2023] [Accepted: 07/17/2023] [Indexed: 10/08/2023]
Abstract
The roles of protein composition, pH and enzymes in goat milk protein hydrolysis is still unclear and the proteolysis of low abundant goat milk proteins has received limited attention. The aim of this study was to study the impact of protein composition and proteolytic conditions on goat milk protein hydrolysis in a simplified digestion model. Both whole milk and infant formula were hydrolyzed at pH 2 and 4, using pepsin as well as pepsin combined with pancreatin. Intact proteins were separated from digests using spin filters, followed by bottom-up proteomics of the separated proteins. Results show that under all conditions, caseins are hydrolyzed quickly. Goat casein hydrolysis in infant formula was slightly faster than in goat whole milk, possibly due to less casein coagulation during pepsin hydrolysis at both pH 2 and 4. Several low abundant immunoactive goat milk proteins, especially immunoglobulins, GLYCAM-1 and osteopontin, resisted proteolysis more than high abundant proteins, independent of the pH and enzyme used for hydrolysis. Fast hydrolysis of casein and slow hydrolysis of immunoactive proteins may indicate a good balance between protein utilization and protection of the infant by goat milk proteins.
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Affiliation(s)
- Kasper Hettinga
- Dairy Science and Technology, Food Quality & Design Group, Wageningen University, 6708WG Wageningen, the Netherlands.
| | | | | | - Xiaogu Du
- University of California, Department of Nutrition, Davis, CA 95616, USA
| | | | - Bo Lönnerdal
- University of California, Department of Nutrition, Davis, CA 95616, USA
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6
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Byrne ME, Arranz E, Bot F, Gómez-Mascaraque LG, Tobin JT, O’Mahony JA, O’Callaghan TF. The Protein Composition and In Vitro Digestive Characteristics of Animal- versus Plant-Based Infant Nutritional Products. Foods 2023; 12:foods12071469. [PMID: 37048290 PMCID: PMC10094249 DOI: 10.3390/foods12071469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 03/17/2023] [Accepted: 03/24/2023] [Indexed: 03/31/2023] Open
Abstract
The protein composition and digestive characteristics of four commercially available infant formulae (IF) manufactured using bovine (B-IF), caprine (C-IF), soy (S-IF), and rice (R-IF) as a protein source were examined in this study. Plant-based formulae had significantly higher crude protein and non-protein nitrogen (NPN) concentrations. Static in vitro gastrointestinal digestion of these formulae, and subsequent analysis of their digestates, revealed significantly higher proteolysis of B-IF at the end of gastrointestinal digestion compared to the other formulae, as indicated by the significantly higher concentration of free amine groups. Furthermore, differences in structure formation during the gastric phase of digestion were observed, with formation of a more continuous, firmer coagulum by C-IF, while R-IF demonstrated no curd formation likely due to the extensive hydrolysis of these proteins during manufacture. Differences in digestive characteristics between formulae manufactured from these different protein sources may influence the bio-accessibility and bioavailability of nutrients, warranting additional study.
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7
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Lin Q, Ouyang C, Luo N, Ye A. Coagulation of model infant formulae: Impact on their in vitro dynamic gastric digestion. Food Hydrocoll 2023. [DOI: 10.1016/j.foodhyd.2023.108667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2023]
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8
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Sabari S, Julmohammad N, Jahurul HAM, Matanjun P, Ab. Wahab N. In Vitro Infant Digestion of Whey Proteins Isolate-Lactose. Foods 2023; 12:foods12030667. [PMID: 36766193 PMCID: PMC9914322 DOI: 10.3390/foods12030667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 12/31/2022] [Accepted: 01/06/2023] [Indexed: 02/05/2023] Open
Abstract
The model in vitro protein digestion technique has received greater attention due to providing significant advantages compared to in vivo experiments. This research employed an in vitro infant digestive static model to examine the protein digestibility of whey proteins isolate-lactose (WPI-Lac). The polyacrylamide gel electrophoresis (PAGE) pattern for alpha-lactalbumin of WPI at 60 min showed no detectable bands, while the alpha-lactalbumin of the WPI-Lac was completely digested after 5 min of gastric digestion. The beta-lactoglobulin of the WPI-Lac was found to be similar to the beta-lactoglobulin of the WPI, being insignificant at pH 3.0. The alpha-lactalbumin of the WPI decreased after 100 min of duodenal digestion at pH 6.5, and the WPI-Lac was completely digested after 60 min. The peptides were identified as ~2 kilodalton (kDa) in conjugated protein, which indicated that the level of degradation of the protein was high, due to the hydrolysis progress. The conjugated protein increased the responsiveness to digestive proteolysis, potentially leading to the release of immunogenic protein by lactose, and to the creation of hypoallergenic protein.
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Affiliation(s)
- Sarizan Sabari
- Faculty of Food Science and Nutrition, Universiti Malaysia Sabah, Kota Kinabalu 88400, Sabah, Malaysia
| | - Norliza Julmohammad
- Faculty of Food Science and Nutrition, Universiti Malaysia Sabah, Kota Kinabalu 88400, Sabah, Malaysia
- Correspondence:
| | - Haque Akanda Md Jahurul
- Department of Agriculture, School of Agriculture, University of Arkansas, 1200 North University Dr., M/S 4913, Pine Bluff, AR 71601, USA
| | - Patricia Matanjun
- Faculty of Food Science and Nutrition, Universiti Malaysia Sabah, Kota Kinabalu 88400, Sabah, Malaysia
| | - Noorakmar Ab. Wahab
- Faculty of Food Science and Nutrition, Universiti Malaysia Sabah, Kota Kinabalu 88400, Sabah, Malaysia
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9
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Yang M, Ye A, Yang Z, Everett DW, Gilbert EP, Singh H. Pepsin-induced coagulation of casein micelles: Effect of whey proteins and heat treatment. Food Chem 2023; 402:134214. [DOI: 10.1016/j.foodchem.2022.134214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 08/28/2022] [Accepted: 09/09/2022] [Indexed: 11/27/2022]
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10
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Ahn N, Imm JY. Effect of phospholipid matrix on emulsion stability, microstructure, proteolysis, and in vitro digestibility in model infant formula emulsion. Food Res Int 2023; 163:112218. [PMID: 36596147 DOI: 10.1016/j.foodres.2022.112218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 11/15/2022] [Accepted: 11/20/2022] [Indexed: 11/25/2022]
Abstract
The effects of adding different phospholipid (PL) matrices [milk sphingomyelin (SM) vs soy phosphatidylcholine (PC)] on emulsion stability, microstructure, and in vitro simulated lipid digestion were examined using a Model Infant Formula Emulsion (MIFE). The emulsion stability of MIFE increased significantly with PL addition (0.1 and 0.2 %). Compared to sole MIFE or MIFE + PC, the incorporation of SM resulted in increased emulsion stability (p < 0.05) and a greater amount of free fatty acid release (p < 0.05) during in vitro simulated digestion. This was mainly due to the reduction of intensive droplet aggregation, thus providing a large surface area and improved digestibility. This is further experimentally supported by the evolution of particle size distribution, zeta-potential, and microstructure analysis using confocal laser scanning microscopy. The incorporation of SM in the emulsion formation significantly delayed digestion of β-lactoglobulin during in vitro digestion. Lipid digestibility in MIFE was altered depending on the type of PL matrix, and SM displayed a superior effect to PC. Thus, the creation of a novel emulsion interface by the appropriate selection of emulsifiers can be used to improve lipid digestion in infants and obtain desirable nutritional consequences.
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Affiliation(s)
- Nahyun Ahn
- Department of Interdisciplinary Program for Bio-health Convergence, Kookmin University, Seoul 02707, Republic of Korea.
| | - Jee-Young Imm
- Department of Interdisciplinary Program for Bio-health Convergence, Kookmin University, Seoul 02707, Republic of Korea; Department of Foods and Nutrition, Kookmin University, Seoul 02707, Republic of Korea.
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11
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Impact of casein-to-whey protein ratio on gastric emptying, proteolysis, and peptidome profile of fermented milk during in vitro dynamic gastrointestinal digestion in preschool children. Food Chem 2022; 405:134840. [DOI: 10.1016/j.foodchem.2022.134840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 09/30/2022] [Accepted: 10/31/2022] [Indexed: 11/06/2022]
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12
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How to adjust α-lactalbumin and β-casein ratio in milk protein formula to give a similar digestion pattern to human milk? J Food Compost Anal 2022. [DOI: 10.1016/j.jfca.2022.104536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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13
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Hellebois T, Gaiani C, Soukoulis C. Impact of alfalfa (Medicago sativa L.) galactomannan on the microstructural and physicochemical changes of milk proteins under static in-vitro digestion conditions. Food Chem X 2022; 14:100330. [PMID: 35615260 PMCID: PMC9125660 DOI: 10.1016/j.fochx.2022.100330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 05/04/2022] [Accepted: 05/15/2022] [Indexed: 12/04/2022] Open
Abstract
The impact of alfalfa galactomannan (AAG) on the digestibility of milk proteins was studied. AAG mediated the intragastric aggregation of both sodium caseinate and whey protein isolate. AAG affected only the peptic cleavage of caseins and β-lactoglobulin in the gastric chymes. AAG enhanced the free amino acids release in the gastric chymes regardless of the protein type. The free amino acids release rate in the intestinal chymes were adversely related to AAG content.
This paper reports on the impact of alfalfa galactomannan (AAG, 0.1, 0.5 or 1% wt.) on the colloidal changes and digestibility of sodium caseinate (NaCN) and whey protein isolate (WPI) dispersions (10% wt.) under static in-vitro digestion conditions. Static laser light scattering and confocal laser scanning microscopy-assisted assessment of the NaCN-based gastric chymes confirmed the ability of AAG to control the acid-induced protein coagulation phenomena. Contrarily, the presence of AAG in the WPI-based gastric chymes was associated with the formation of larger aggregates due to the occurrence of segregative microphase separation. The kinetic modelling of the SDS-PAGE densitometric data showed that the intragastric peptic cleavage rates were higher for caseins than whey proteins (β-lactoglobulin, α-lactalbumin). However, free amino acid (FAA) release rates did not exceed 12% under intragastric conditions, whilst notably higher release rates were achieved in the intestinal digesta (36–52%). In all cases, the FAA release rates significantly increased in the presence of AAG.
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14
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Jeong EW, Park GR, Kim J, Baek Y, Go GW, Lee HG. Whey Proteins-Fortified Milk with Adjusted Casein to Whey Proteins Ratio Improved Muscle Strength and Endurance Exercise Capacity without Lean Mass Accretion in Rats. Foods 2022; 11:foods11040574. [PMID: 35206050 PMCID: PMC8870883 DOI: 10.3390/foods11040574] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2021] [Revised: 02/12/2022] [Accepted: 02/13/2022] [Indexed: 02/01/2023] Open
Abstract
This study investigated the effects of the casein to whey proteins (CW) ratio in milk on body composition, muscle strength, and endurance exercise capacity in rats. Thirty rats were assigned into five groups, and each treatment was administered for eight weeks: (1) control (isocaloric lactose supplementation), (2) CW8:2 (regular milk), (3) CW6:4, (4) CW5:5, and (5) nitrogen-free (lactose). The milk concentration was converted from a human equivalent dose (400 mL/60 kg body weight/day). All the milk-administered groups showed significantly greater growth performance, including body weight and weight gain compared to the isocaloric lactose control (p < 0.05). However, different CW ratios in milk had no effect on growth performance. Additionally, body composition, i.e., lean body mass and adiposity, was not affected by the CW ratio. Interestingly, CW6:4 and CW5:5 had significantly higher plasma branched-chain amino acids concentrations than control and CW8:2 (p < 0.05). In addition, CW5:5 showed significantly increased grip strength by 12–24% and time to exhaustion by 8–62% compared to the other groups (p < 0.05), indicating that the higher whey proteins ratio improved physical performance. We concluded that whey proteins-fortified milk enhances muscle strength and endurance exercise capacity without altering lean mass in rats.
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Affiliation(s)
- Eun Woo Jeong
- Department of Food and Nutrition, Hanyang University, Seoul 04763, Korea; (E.W.J.); (G.R.P.); (J.K.); (Y.B.)
| | - Gyu Ri Park
- Department of Food and Nutrition, Hanyang University, Seoul 04763, Korea; (E.W.J.); (G.R.P.); (J.K.); (Y.B.)
| | - Jiyun Kim
- Department of Food and Nutrition, Hanyang University, Seoul 04763, Korea; (E.W.J.); (G.R.P.); (J.K.); (Y.B.)
| | - Youjin Baek
- Department of Food and Nutrition, Hanyang University, Seoul 04763, Korea; (E.W.J.); (G.R.P.); (J.K.); (Y.B.)
| | - Gwang-woong Go
- Korean Living Science Research Center, Hanyang University, Seoul 04763, Korea
- Correspondence: (G.-w.G.); (H.G.L.); Tel.: +82-2-2220-1206 (G.-w.G.); +82-2-2220-1202 (H.G.L.)
| | - Hyeon Gyu Lee
- Department of Food and Nutrition, Hanyang University, Seoul 04763, Korea; (E.W.J.); (G.R.P.); (J.K.); (Y.B.)
- Correspondence: (G.-w.G.); (H.G.L.); Tel.: +82-2-2220-1206 (G.-w.G.); +82-2-2220-1202 (H.G.L.)
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15
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Jiang H, Gallier S, Feng L, Han J, Liu W. Development of the digestive system in early infancy and nutritional management of digestive problems in breastfed and formula-fed infants. Food Funct 2022; 13:1062-1077. [DOI: 10.1039/d1fo03223b] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Food digestion and absorption in infants are closely related to early growth and long-term health. Human milk and infant formula are the main food sources for 0-6 month-old infants. Due...
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16
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Mudgil P, Baba WN, Alneyadi M, Ali Redha A, Maqsood S. Production, characterization, and bioactivity of novel camel milk-based infant formula in comparison to bovine and commercial sources. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2021.112813] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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17
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Heat-induced unfolding facilitates plant protein digestibility during in vitro static infant digestion. Food Chem 2021; 375:131878. [PMID: 34952386 DOI: 10.1016/j.foodchem.2021.131878] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 12/13/2021] [Accepted: 12/14/2021] [Indexed: 11/22/2022]
Abstract
Soy protein is the main protein source for plant-based infant formula, whereas pea protein is considered as a potential alternative plant protein source. This study assessed the structural changes of soy and pea proteins after heating between 65 °C and 100 °C, and its effects on the in vitro digestibility in the context of infant digestion. We found that with increased heating intensity, both soy and pea proteins unfolded, manifested as the increased surface hydrophobicity, thereby potentially improving the accessibility to digestive enzymes. Their final in vitro digestibility increased from ∼ 30% of non-treated samples to ∼ 60% of 100 °C-heated samples for soy protein, and from ∼ 52% to ∼ 65% for pea protein. Surface hydrophobicity was strongly positively correlated to the overall digestibility. Therefore, the heating temperatures that enabled protein unfolding promoted the digestibility of soy and pea proteins under infant digestion conditions.
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Compositional and Functional Considerations for Bovine-, Caprine- and Plant-Based Infant Formulas. DAIRY 2021. [DOI: 10.3390/dairy2040054] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Breastmilk is the optimal source of nutrition for infants. However, in circumstances where breastfeeding is not possible or feasible, infant formula provides an essential alternative to fulfil the nutritional requirements of the developing infant. Traditionally, the manufacture of infant formula has involved utilisation of bovine milk as a base ingredient, formulated with other nutrients and bioactive ingredients to closely match the composition of human breastmilk. While it is the most widely available type of formula on the market, bovine-based infant formula is not suitable for all infants, and therefore alternatives such as those based on caprine milk, soy and rice protein are becoming increasingly available. This review provides a detailed examination of the composition of infant formula prepared from bovine milk, caprine milk, soy, and rice protein sources. Available literature on nutrient bio-accessibility and aspects of protein functionality relevant to infant formula is discussed.
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Abstract
The introduction of membrane filtration during infant milk formula (IMF) processing represents an innovative approach to increasing native protein content compared to standard IMF. The objective of this study was to compare IMF powder produced using a standard process and IMF produced from raw bovine skim milk with added whey protein isolate using a split-stream process incorporating a ceramic 1.4 μm filter followed by a polyvinylidene difluoride polymeric 0.2 μm filter. Retentates from 0.2 μm microfiltration (MF) were blended with fat, lactose, and minerals and subsequently high-temperature treated (125 °C × 5 s). The heat-treated retentate was merged with the permeate from the 0.2 μm MF, homogenised, and spray-dried (referred to as membrane-filtered IMF or MEM-IMF). A control IMF was also produced using standard treatment (referred to as high-temperature IMF or HT-IMF) without membrane filtration. Both IMF products were characterised by high-performance liquid chromatography, particle size, and enzyme activity assays. MEM-IMF powder had significantly higher amounts of native (1.1 g per 100 g powder) and monomeric (1.48 g per 100 g powder) whey proteins when compared to 0.18 and 0.46 g per 100 g powder in HT-IMF, respectively. MEM-IMF also exhibited a lower degree of protein aggregation compared to HT-IMF. Comparison of microbial and Maillard by-products markers demonstrated that a safe IMF product could be produced at scale, although levels of the Maillard by-product marker, carboxymethyl-lysine, were not significantly reduced in MEM-IMF. This study demonstrates how membrane filtration can be used to retain native proteins during IMF manufacture.
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Jeong EW, Park GR, Kim J, Yun SY, Imm JY, Lee HG. Effect of Modified Casein to Whey Protein Ratio on Dispersion Stability, Protein Quality and Body Composition in Rats. Food Sci Anim Resour 2021; 41:855-868. [PMID: 34632404 PMCID: PMC8460334 DOI: 10.5851/kosfa.2021.e42] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 07/29/2021] [Accepted: 08/05/2021] [Indexed: 11/29/2022] Open
Abstract
The present study was designed to investigate the effects of protein formula with different casein (C) to whey protein (W) ratios on dispersion stability, protein quality and body composition in rats. Modification of the casein to whey protein (CW) ratio affected the extent of protein aggregation, and heated CW-2:8 showed a significantly increased larger particle (>100 μm) size distribution. The largest protein aggregates were formed by whey protein self-aggregation. There were no significant differences in protein aggregation when the CW ratios changed from 10:0 to 5:5. Based on the protein quality assessment (CW-10:0, CW-8:2, CW-5:5, and CW-2:8) for four weeks, CW-10:0 showed a significantly higher feed intake (p<0.05), but the high proportion of whey protein in the diet (CW-5:5 and CW-2:8) increased the feed efficiency ratio, protein efficiency ratio, and net protein ratio compared to other groups. Similarly, CW-2:8 showed greater true digestibility compared to other groups. No significant differences in fat mass and lean mass analyzed by dual-energy x-ray absorptiometry were observed. A significant difference was found in the bone mineral density between the CW-10:0 and CW-2:8 groups (p<0.05), but no difference was observed among the other groups. Based on the results, CW-5:5 improved protein quality without causing protein instability problems in the dispersion.
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Affiliation(s)
- Eun Woo Jeong
- Department of Food and Nutrition, Hanyang
University, Seoul 04763, Korea
| | - Gyu Ri Park
- Department of Food and Nutrition, Hanyang
University, Seoul 04763, Korea
| | - Jiyun Kim
- Department of Food and Nutrition, Hanyang
University, Seoul 04763, Korea
| | - So-Yul Yun
- Department of Foods and Nutrition, Kookmin
University, Seoul 02707, Korea
| | - Jee-Young Imm
- Department of Foods and Nutrition, Kookmin
University, Seoul 02707, Korea
| | - Hyeon Gyu Lee
- Department of Food and Nutrition, Hanyang
University, Seoul 04763, Korea,Corresponding author : Hyeon
Gyu Lee, Department of Food and Nutrition, Hanyang University, Seoul 04763,
Korea. Tel: +82-2-2220-1201, Fax: +82-2-2292-1226, E-mail:
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