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Al-Thaibani A, Mostafa H, Alshamsi O, Moin A, Bansal N, Mudgil P, Maqsood S. Spray drying and ultrasonication processing of camel whey protein concentrate: Characterization and impact on bioactive properties. J Dairy Sci 2024:S0022-0302(24)00951-2. [PMID: 38908705 DOI: 10.3168/jds.2024-24900] [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: 03/12/2024] [Accepted: 05/30/2024] [Indexed: 06/24/2024]
Abstract
The production of whey protein concentrates (WPCs) from camel milk whey represents an effective approach to valorize this processing by-product. These concentrates harbor active ingredients with significant bioactive properties. Camel WPCs were spray-dried (SD) at inlet temperature of 170, 185 and 200°C, or Ultrasonicated (US) for 5, 10 and 15 min, then freeze-dried to obtain fine powder. The impact of both treatments on protein degradation was studied by sodium dodecyl sulfate-PAGE and reverse-phase ultraperformance liquid chromatography (RP-UPLC) techniques. Significantly enhanced protein degradation was observed after US treatment when compared with SD. Both SD and US treatments slightly enhanced the WPCs samples' antioxidant activities. The US exposure for 15 min exhibited highest 2,2'-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) scavenging activity (12.12 mmol TE/g). Moreover, US treatment for 10 min exhibited the highest in vitro anti-diabetic properties (α-amylase and α-glucosidase inhibition), and dipeptidyl-peptidase-IV inhibitory activity among all samples. In addition, the ultrasonication for 10 min and SD at 170°C showed the lowest IC50 values for in vitro anti-hypercholesterolemic activities in terms of pancreatic lipase and cholesteryl esterase inhibition. Conclusively, these green techniques can be adapted in the preservation and processing of camel milk whey into active ingredients with high bioactive properties.
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Affiliation(s)
- Alanoud Al-Thaibani
- Department of Food Science, College of Agriculture and Veterinary Medicine, United Arab Emirates University, Al Ain, 15551, United Arab Emirates
| | - Hussein Mostafa
- Department of Food Science, College of Agriculture and Veterinary Medicine, United Arab Emirates University, Al Ain, 15551, United Arab Emirates; Department of Food Science and Agricultural Chemistry, McGill University, Ste Anne de Bellevue, Quebec, H9X 3V9, Canada
| | - Ohood Alshamsi
- Department of Food Science, College of Agriculture and Veterinary Medicine, United Arab Emirates University, Al Ain, 15551, United Arab Emirates
| | - Abeera Moin
- Department of Food Science and Technology, University of Karachi, 75270, Pakistan
| | - Nidhi Bansal
- School of Agriculture and Food Sustainability, The University of Queensland, Brisbane, 4072, QLD, Australia
| | - Priti Mudgil
- Department of Food Science, College of Agriculture and Veterinary Medicine, United Arab Emirates University, Al Ain, 15551, United Arab Emirates
| | - Sajid Maqsood
- Department of Food Science, College of Agriculture and Veterinary Medicine, United Arab Emirates University, Al Ain, 15551, United Arab Emirates; Zayed Center for Health, United Arab Emirates University, Al-Ain, 15551, United Arab Emirates.
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2
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Seifu E. Camel milk products: innovations, limitations and opportunities. FOOD PRODUCTION, PROCESSING AND NUTRITION 2023. [DOI: 10.1186/s43014-023-00130-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
Abstract
AbstractCamel milk is the mainstay for millions of people in arid and semi-arid environments. In these areas, it is mainly consumed raw or after it spontaneously turns sour. Although some attempts have been made to produce dairy products from camel milk, processing of camel milk is generally considered to be difficult and the quality of the final products made from camel milk do not correspond to their bovine milk counterparts. This paper reports a comprehensive analysis of the literature on camel milk products and presents synthesis of the latest developments, limitations pertaining processing and opportunities for development of new and improved camel milk products. The protein composition and colloidal structure of camel milk differs from cow milk. It is characterized by absence of β-lactoglobulin, low κ-casein content, high proportion of β-casein, larger casein micelles and smaller fat globules. These differences lead to the difficulty of making dairy products from camel milk using the same technologies as for bovine milk. Some of the challenges of camel milk processing include poor stability of the milk during UHT treatment, impaired rennetability, formation of weak and fragile curd during coagulation, longer fermentation time, and low thermal stability of the milk during drying. Despite these difficulties, it has now become possible to produce a range of commercial and traditional dairy products from camel milk. Some of the strategies that could be applied to improve the quality and characteristics of camel milk products are discussed.
Graphical Abstract
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3
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Analysis of milk with liquid chromatography–mass spectrometry: a review. Eur Food Res Technol 2023. [DOI: 10.1007/s00217-022-04197-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Abstract
AbstractAs a widely consumed foodstuff, milk and dairy products are increasingly studied over the years. At the present time, milk profiling is used as a benchmark to assess the properties of milk. Modern biomolecular mass spectrometers have become invaluable to fully characterize the milk composition. This review reports the analysis of milk and its components using liquid chromatography coupled with mass spectrometry (LC–MS). LC–MS analysis as a whole will be discussed subdivided into the major constituents of milk, namely, lipids, proteins, sugars and the mineral fraction.
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Mehra R, Kumar S, Singh R, Kumar N, Rathore D, Nayik GA, Alabdallah NM, Monteiro A, Guiné RF, Kumar H. Biochemical, dielectric and surface characteristics of freeze-dried bovine colostrum whey powder. Food Chem X 2022; 15:100364. [PMID: 35761882 PMCID: PMC9233230 DOI: 10.1016/j.fochx.2022.100364] [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: 09/02/2021] [Revised: 05/18/2022] [Accepted: 06/12/2022] [Indexed: 11/03/2022] Open
Abstract
Whey powder prepared by freeze-drying of bovine colostrum obtained from high altitude cow breed Himachali Pahari. Freeze-dried BCWP contained a considerable amount of amino acids, minerals and IgG. BCWP has a resistance of ∼57 M-ohm (Ω) which decreases with frequency and temperature. BCWP can find utilization as a functional food ingredient in health and infants’ formula.
Colostrum samples of recently registered cow breed “Himachali Pahari” were assorted from high altitude zone (901–2200 m). Prepared bovine colostrum whey powder (BCWP) was analysed for chemical composition, amino acids, minerals, surface morphology (SEM-EDS), FTIR and dielectric properties. Results showed that freeze-dried BCWP contained a considerable amount of nutritional parameters viz IgG (18.55 g/100 g), protein (71.72 g/100 g) and total amino acids (69.64 g/100 g). Additionally, the concentration of essential minerals was found to be adequate, and there was no presence of heavy metals. The BCWP exhibits good dielectric properties (resistance ∼57 M-Ω). SEM-EDS showed the broken up-wards layer structure with the uniform distribution of minerals on the surface. The FTIR spectra confirmed the presence of a higher proportion of β-sheets and β-turn structures in BCWP. Thus, on account of good functional and nutritive properties, BCWP could be foreseen as the future of functional food.
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Felfoul I, Bouazizi A, Burgain J, Perroud C, Gaiani C, Scher J, Attia H, Petit J. Enzymatic coagulation of raw and reconstituted skim dromedary and cows’ milk powders: kinetics, rheological and morphological properties. Int Dairy J 2022. [DOI: 10.1016/j.idairyj.2022.105509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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6
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Zou Z, Duley JA, Cowley DM, Reed S, Arachchige BJ, Bhandari B, Shaw PN, Bansal N. Physicochemical Properties and Whey Proteomes of Camel Milk Powders Produced by Different Concentration and Dehydration Processes. Foods 2022; 11:foods11050727. [PMID: 35267360 PMCID: PMC8909633 DOI: 10.3390/foods11050727] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 02/22/2022] [Accepted: 02/25/2022] [Indexed: 02/04/2023] Open
Abstract
Camel milk powder production is an alternative to preserve the perishable milk for later-date consumption. However, the impacts of dehydration processes on bioactive compounds in camel milk are largely unknown. Hence, the present study attempted to compare the physicochemical properties and protein profiles of camel milk powders produced by different concentration and dehydration processes. Six camel milk powders were produced by freeze- and spray-drying methods in conjunction with two liquid concentration techniques, namely spray dewatering and reverse osmosis. The results of proteomic analysis showed that direct freeze-dried camel milk powder had the least changes in protein profile, followed by direct spray-dried powder. The camel milk powders that underwent concentration processes had more profound changes in their protein profiles. Among the bioactive proteins identified, lactotransferrin and oxidase/peroxidase had the most significant decreases in concentration following processing. On the contrary, glycosylation-dependent cell adhesion molecule 1, peptidoglycan recognition protein 1, and osteopontin increased in concentration. The results revealed that direct freeze drying was the most ideal method for preserving the bioactive proteins during camel milk powder production. However, the freeze-drying technique has cost and scalability constraints, and the current spray-drying technique needs improvement to better retain the bioactivity of camel milk during powder processing.
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Affiliation(s)
- Zhengzheng Zou
- School of Agriculture and Food Sciences, The University of Queensland, St. Lucia, QLD 4072, Australia; (Z.Z.); (B.B.)
| | - John A. Duley
- School of Pharmacy, The University of Queensland, Woolloongabba, QLD 4102, Australia; (J.A.D.); (P.N.S.)
| | - David M. Cowley
- Mater Research Institute, The University of Queensland, Woolloongabba, QLD 4102, Australia;
| | - Sarah Reed
- Centre for Clinical Research, The University of Queensland, Herston, QLD 4006, Australia; (S.R.); (B.J.A.)
| | - Buddhika J. Arachchige
- Centre for Clinical Research, The University of Queensland, Herston, QLD 4006, Australia; (S.R.); (B.J.A.)
| | - Bhesh Bhandari
- School of Agriculture and Food Sciences, The University of Queensland, St. Lucia, QLD 4072, Australia; (Z.Z.); (B.B.)
| | - Paul N. Shaw
- School of Pharmacy, The University of Queensland, Woolloongabba, QLD 4102, Australia; (J.A.D.); (P.N.S.)
| | - Nidhi Bansal
- School of Agriculture and Food Sciences, The University of Queensland, St. Lucia, QLD 4072, Australia; (Z.Z.); (B.B.)
- School of Pharmacy, The University of Queensland, Woolloongabba, QLD 4102, Australia; (J.A.D.); (P.N.S.)
- Correspondence: ; Tel.: +61-7-33651673; Fax: +61-7-33651177
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Ho TM, Zou Z, Bansal N. Camel milk: A review of its nutritional value, heat stability, and potential food products. Food Res Int 2022; 153:110870. [DOI: 10.1016/j.foodres.2021.110870] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 11/23/2021] [Accepted: 12/02/2021] [Indexed: 02/02/2023]
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8
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Nunes L, Lima de Paula I, Cristianini M, Stephani R, Tavares GM. Aging of infant formulas containing proteins from different sources. Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2021.112299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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9
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Lima de Paula I, Scaldini Teixeira EB, Francisquini JD, Stephani R, Perrone ÍT, Fernandes de Carvalho A, Cappa de Oliveira LF. Buffalo powder dairy products with and without lactose hydrolysis: Physical-chemical and technical-functional characterizations. Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2021.112124] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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10
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Łopusiewicz Ł, Bogusławska-Wąs E, Drozłowska E, Trocer P, Dłubała A, Mazurkiewicz-Zapałowicz K, Bartkowiak A. The Application of Spray-Dried and Reconstituted Flaxseed Oil Cake Extract as Encapsulating Material and Carrier for Probiotic Lacticaseibacillus rhamnosus GG. MATERIALS (BASEL, SWITZERLAND) 2021; 14:5324. [PMID: 34576543 PMCID: PMC8471581 DOI: 10.3390/ma14185324] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Revised: 09/10/2021] [Accepted: 09/10/2021] [Indexed: 12/28/2022]
Abstract
Agro-industrial by-products are promising source of biopolymers, including proteins and polysaccharides. This study was designed to evaluate the flaxseed oil cake extract (FOCE) as natural encapsulating material and carrier for probiotic Lacticaseibacillus rhamnous GG (LGG). The powders were obtained using three spray drying inlet temperatures (110 °C, 140 °C, 170 °C), and reconstituted. The influence of temperature on water activity, morphology, chemical composition, flowability and cohesiveness of the powders was estimated. For all variants, the survival of bacteria during spray drying, and simulated passage through the gastrointestinal tract was evaluated. The preservation of LGG probiotic features such as cholesterol reduction, hydrophobicity and adhesion to mucin were examined. Results revealed that all physicochemical and functional characteristics of the powders were affected by the inlet temperature. This study demonstrated that FOCE is an appropriate matrix for spray drying (due to flaxseed proteins and polysaccharides) providing high survivability of bacteria (89.41-96.32%), that passed meaningfully through the simulated gastrointestinal tract (4.39-5.97 log reduction), largely maintaining their probiotic properties, being a promising environmentally-friendly carrier for probiotic LGG.
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Affiliation(s)
- Łukasz Łopusiewicz
- Center of Bioimmobilisation and Innovative Packaging Materials, Faculty of Food Sciences and Fisheries, West Pomeranian University of Technology Szczecin, Janickiego 35, 71-270 Szczecin, Poland; (E.D.); (P.T.); (A.B.)
| | - Elżbieta Bogusławska-Wąs
- Department of Applied Microbiology and Human Nutrition Physiology, West Pomeranian University of Technology Szczecin, Papieża Pawła VI 3, 71-899 Szczecin, Poland; (E.B.-W.); (A.D.)
| | - Emilia Drozłowska
- Center of Bioimmobilisation and Innovative Packaging Materials, Faculty of Food Sciences and Fisheries, West Pomeranian University of Technology Szczecin, Janickiego 35, 71-270 Szczecin, Poland; (E.D.); (P.T.); (A.B.)
| | - Paulina Trocer
- Center of Bioimmobilisation and Innovative Packaging Materials, Faculty of Food Sciences and Fisheries, West Pomeranian University of Technology Szczecin, Janickiego 35, 71-270 Szczecin, Poland; (E.D.); (P.T.); (A.B.)
| | - Alicja Dłubała
- Department of Applied Microbiology and Human Nutrition Physiology, West Pomeranian University of Technology Szczecin, Papieża Pawła VI 3, 71-899 Szczecin, Poland; (E.B.-W.); (A.D.)
| | - Kinga Mazurkiewicz-Zapałowicz
- Department of Hydrobiology, Ichthyology and Biotechnology of Reproduction, West Pomeranian University of Technology in Szczecin, Kazimierza Królewicza 4, 71-899 Szczecin, Poland;
| | - Artur Bartkowiak
- Center of Bioimmobilisation and Innovative Packaging Materials, Faculty of Food Sciences and Fisheries, West Pomeranian University of Technology Szczecin, Janickiego 35, 71-270 Szczecin, Poland; (E.D.); (P.T.); (A.B.)
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11
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Rodier LC, Hartel RW. Characterizing Maillard reaction kinetics and rheological changes in white chocolate over extended heating. J Food Sci 2021; 86:2553-2568. [PMID: 34056726 DOI: 10.1111/1750-3841.15772] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Revised: 04/15/2021] [Accepted: 04/16/2021] [Indexed: 11/29/2022]
Abstract
Molten white chocolate held at high temperatures for extended periods of time undergoes thickening and nonenzymatic browning reactions. Lactose and milk proteins participate in Maillard browning, which occurs more rapidly at higher temperatures. Crystallization of amorphous lactose and high temperature contribute to rheological changes over heating. In the present study, five white chocolates of varied compositions were sampled over time at different temperatures. White chocolates containing amorphous lactose showed increases in complex viscosity, while chocolates with crystalline or no lactose showed no change in rheological properties. Maillard browning was measured through both colorimetry and spectrophotometric analysis of brown pigments. Both markers showed the greatest browning for Nonfat dry milk (NFDM)-containing systems. Chocolates containing no NFDM (milk protein isolate, MPI, or crystalline lactose) showed no change in absorbance after clarification, but some browning in colorimetry results, likely due to residual amorphous lactose in the MPI or increased mobility of lactose from crystals at high temperatures. The evolution of fluorescent intermediates was visualized using fluorescence spectroscopy, revealing that these intermediates were formed prior to colored end stage products and were consumed as the reaction approaches completion. An excess of lactose in the system meant reducing sugar declines were relatively small throughout. Kinetic models were created to determine the influence of chocolate composition and temperature on thickening as related to complex viscosity (first order) and browning via colorimetry and absorbance (pseudo-zero order). Both thickening rate and Maillard reaction rates were faster in chocolates with greater levels of amorphous lactose and when held at higher temperatures. PRACTICAL APPLICATION: So-called "golden chocolate" is white chocolate that has been held at warm temperatures for a period of time to undergo Maillard browning. However, thickening of the chocolate during heating can cause processing problems. In this study, viscosity changes are correlated with Maillard browning kinetics to help chocolate manufacturers find optimal conditions for creating new products.
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Affiliation(s)
- Liana C Rodier
- Department of Food Science, University of Wisconsin-Madison, Madison, WI, USA
| | - Richard W Hartel
- Department of Food Science, University of Wisconsin-Madison, Madison, WI, USA
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12
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Ho TM, Ton TT, Gaiani C, Bhandari BR, Bansal N. Changes in surface chemical composition relating to rehydration properties of spray-dried camel milk powder during accelerated storage. Food Chem 2021; 361:130136. [PMID: 34051599 DOI: 10.1016/j.foodchem.2021.130136] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 05/14/2021] [Accepted: 05/14/2021] [Indexed: 11/19/2022]
Abstract
Alterations in surface chemical composition relating to rehydration properties of spray-dried camel milk powders during accelerated storage (11-33% RH, 37 °C) over 18 weeks were investigated. The results showed that the surface of the fresh spray-dried camel milk powder (t = 0) was dominated by lipids (78%), followed by proteins (16%) and lactose (6%). During storage, the surface protein and lactose content decreased while the surface lipid content increased, resulting in an increase in surface hydrophobicity and slight agglomeration of the powder, especially for powder kept at 33% RH. Although fresh camel milk powder had very poor wettability, it displayed very high dispersibility and solubility (99%). During storage, dispersibility and solubility declined with increasing storage time and increasing RH levels, which correlated with an increase in surface lipid content. However, at the end of the storage period, camel milk powder still retained very high solubility (>93%).
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Affiliation(s)
- Thao M Ho
- Department of Food and Nutrition, P.O. Box 66, 00014, The University of Helsinki, Finland; School of Agriculture and Food Sciences, The University of Queensland, St Lucia Campus, QLD, 4072, Australia
| | - Trinh T Ton
- School of Agriculture and Food Sciences, The University of Queensland, St Lucia Campus, QLD, 4072, Australia; Department of Food Engineering, Faculty of Food Science and Technology, Nong Lam University, Ho Chi Minh City, Viet Nam
| | - Claire Gaiani
- Université de Lorraine, Laboratoire d'Ingénierie des Biomolécules (LIBio), 2 avenue de la Forêt de Haye, TSA 40602, 54518 Vandoeuvre-lès-Nancy, France
| | - Bhesh R Bhandari
- School of Agriculture and Food Sciences, The University of Queensland, St Lucia Campus, QLD, 4072, Australia
| | - Nidhi Bansal
- School of Agriculture and Food Sciences, The University of Queensland, St Lucia Campus, QLD, 4072, Australia.
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13
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Effects of Physical Ripening Conditions and Churning Temperature on the Butter-Making Process and the Physical Characteristics of Camel Milk Butter. FOOD BIOPROCESS TECH 2021. [DOI: 10.1007/s11947-021-02649-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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14
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Konuspayeva G, Faye B. Recent Advances in Camel Milk Processing. Animals (Basel) 2021; 11:ani11041045. [PMID: 33917722 PMCID: PMC8068116 DOI: 10.3390/ani11041045] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 03/23/2021] [Accepted: 04/06/2021] [Indexed: 12/20/2022] Open
Abstract
Simple Summary The camel milk market was limited for a long time by its almost exclusive self-consumption use in nomadic camps. Significant development has been observed for the past two or three decades, including internationally, boosted by its reputation regarding its health effects for regular consumers. Such emergence has led the stakeholders in the sector to offer diversified products corresponding to the tastes of increasingly urbanized consumers, more sensitive to “modern” products. Thus, traditionally drunk in raw or naturally fermented form, camel milk has undergone unprecedented transformations such as pasteurization, directed fermentation, cheese or yoghurt processing, and manufacture of milk powder for the export market. However, the specific characteristics of this milk (composition, physical properties) mean that the technologies applied (copied from technologies used for cow milk) must be adapted. In this review, some technological innovations are presented, enabling stakeholders of the camel milk sector to satisfy the demand of manufacturers and consumers. Abstract Camel milk is a newcomer to domestic markets and especially to the international milk market. This recent emergence has been accompanied by a diversification of processed products, based on the technologies developed for milk from other dairy species. However, technical innovations had to be adapted to a product with specific behavior and composition. The transformation of camel milk into pasteurized milk, fermented milk, cheese, powder, or other products was supported, under the pressure of commercial development, by technological innovations made possible by a basic and applied research set. Some of these innovations regarding one of the less studied milk sources are presented here, as well as their limitations. Technical investigations for an optimal pasteurization, development of controlled fermentation at industrial scale, control of cheese technology suitable for standardized production, and improvements in processes for the supply of a high-quality milk powder are among the challenges of research regarding camel milk.
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Affiliation(s)
- Gaukhar Konuspayeva
- UMR SELMET, CIRAD-ES, 34398 Montpellier, France;
- Department of Biotechnology, Faculty of Biology and Biotechnology, Al-Farabi Kazakh National University, Almaty 050040, Kazakhstan
| | - Bernard Faye
- UMR SELMET, CIRAD-ES, 34398 Montpellier, France;
- Department of Biotechnology, Faculty of Biology and Biotechnology, Al-Farabi Kazakh National University, Almaty 050040, Kazakhstan
- Correspondence: ; Tel.: +33-671-355-928
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15
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Zouari A, Lajnaf R, Lopez C, Schuck P, Attia H, Ayadi MA. Physicochemical, techno-functional, and fat melting properties of spray-dried camel and bovine milk powders. J Food Sci 2020; 86:103-111. [PMID: 33295013 DOI: 10.1111/1750-3841.15550] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 10/25/2020] [Accepted: 11/08/2020] [Indexed: 11/30/2022]
Abstract
In this study, three skimmed and one whole-fat spray-dried camel milk powders were produced and their characteristics were compared to those of bovine milk powders. The physicochemical analysis of the produced powders indicated that camel milk powders (whether skimmed or not) presented higher ash and whey protein contents as compared to those of bovine milk powders. Our results indicated that the investigated camel and bovine milk powders exhibited a high solubility index (>99%) with poor dispersibility and wettability indexes due to their small particles size (d50 ≤ 12 µm) and their narrow size distribution (span ≤ 2). In addition, although camel and bovine milk powders presented the same total fat content, lower free fat content was measured for camel milk powders. Besides, the whey protein nitrogen index and the SDS-PAGE electrophoresis underlined that camel and bovine milk proteins remained intact after drying with low denaturation extent. It is worth noticed that camel milk proteins were less denaturized due to the absence of the heat-sensitive β-lactoglobulin in camel milk. Moreover, the low denaturation extent participated in the enhancing of the foaming capacity and stability of camel and bovine milk powders. Finally, the calorimetric analysis showed that higher fat melting temperatures were recorded in whole-fat camel milk powder and in their anhydrous form as compared to those of bovine milk. PRACTICAL APPLICATION: Camel milk powder is an emerging non-bovine dairy product. Understanding its rehydration ability and evaluating the impact of spray drying on its protein quality are promising approaches to obtain high-quality camel milk powder with high reconstitution ability. Findings of this study indicated that spray drying is a suitable technique to produce highly soluble camel milk powders with low denaturation extent. These results will benefit the research and development department of food industry (especially those producing camel milk powder) as well as the direct consumers.
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Affiliation(s)
- Ahmed Zouari
- Valuation, Security and Food Analysis Laboratory, National Engineering School of Sfax, Sfax University, Sfax, Tunisia.,INRAE, STLO, Rennes, F-35000, France
| | - Roua Lajnaf
- Valuation, Security and Food Analysis Laboratory, National Engineering School of Sfax, Sfax University, Sfax, Tunisia
| | | | | | - Hamadi Attia
- Valuation, Security and Food Analysis Laboratory, National Engineering School of Sfax, Sfax University, Sfax, Tunisia
| | - Mohamed Ali Ayadi
- Valuation, Security and Food Analysis Laboratory, National Engineering School of Sfax, Sfax University, Sfax, Tunisia
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16
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Effect of spray and freeze drying on physico-chemical, functional, moisture sorption and morphological characteristics of camel milk powder. Lebensm Wiss Technol 2020. [DOI: 10.1016/j.lwt.2020.110117] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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17
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Zouari A, Briard-Bion V, Gaucheron F, Schuck P, Gaiani C, Triki M, Attia H, Ayadi MA. Effect of pH on the physicochemical characteristics and the surface chemical composition of camel and bovine whey protein's powders. Food Chem 2020; 333:127514. [PMID: 32683259 DOI: 10.1016/j.foodchem.2020.127514] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 07/04/2020] [Accepted: 07/05/2020] [Indexed: 11/24/2022]
Abstract
This study investigated the effect of pH on the denaturation extent, the surface chemical composition, the water sorption isotherm and the glass transition temperature of camel and bovine whey protein's powders. The LC-MS analysis indicated that the β-Lactoglobulin was the most denatured protein in bovine whey powders regardless the pH value, while this protein was totally absent in camel whey. The α-Lactalbumin was relatively heat stable after drying and predominated the powder surface (X-ray photoelectron spectroscopy results) in both camel and bovine whey powders regardless the pH (neutral (6.7) or acidic (4.3 and 4.6)). Analysis of the water sorption isotherms indicated that decreasing the pH induced the increase of the water activity of lactose crystallization for camel and bovine whey powders. Finally, decreasing the pH led to the decrease of the glass transition temperature of camel and bovine whey powder (at 0.13, 0.23, and 0.33 of water activity).
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Affiliation(s)
- Ahmed Zouari
- Valuation, Security and Food Analysis Laboratory, National Engineering School of Sfax, Sfax University, Tunisia; UMR-STLO: Science and Technology of Milk and Egg, INRA, Agrocampus Rennes, France.
| | - Valérie Briard-Bion
- UMR-STLO: Science and Technology of Milk and Egg, INRA, Agrocampus Rennes, France
| | - Frédéric Gaucheron
- UMR-STLO: Science and Technology of Milk and Egg, INRA, Agrocampus Rennes, France
| | - Pierre Schuck
- UMR-STLO: Science and Technology of Milk and Egg, INRA, Agrocampus Rennes, France
| | - Claire Gaiani
- Université de Lorraine, Laboratoire d'Ingénierie des Biomolécules (LIBio), Nancy, France
| | - Mehdi Triki
- Valuation, Security and Food Analysis Laboratory, National Engineering School of Sfax, Sfax University, Tunisia
| | - Hamadi Attia
- Valuation, Security and Food Analysis Laboratory, National Engineering School of Sfax, Sfax University, Tunisia
| | - Mohamed Ali Ayadi
- Valuation, Security and Food Analysis Laboratory, National Engineering School of Sfax, Sfax University, Tunisia.
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