Chemical composition of yak colostrum and transient milk

Cui, Na; Wen, Pengcheng; Liang, Qi; Liu, H. N.; Zhang, W. B.; Wang, P. J.; Guo, Huiyuan; Ren, Fazheng

doi:10.1111/jpn.12282

Cited by 9 publications

(8 citation statements)

References 36 publications

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“…Moreover, we found a positive correlation between high proteins in day-1 colostrum with choline, N-acetyl glucosamine, N-acetyl galactosamine, and creatinine (Figure 2; Table 3) as also reported in mature milk by Sundekilde et al (2014). Nevertheless, inconsistent changes in isoleucine, histidine, and butyrate in bovine colostrum during the first week postpartum were reported in several works (Cui et al, 2015;Meklati et al, 2019;O'Callaghan et al, 2020;Zándoki et al, 2006). This contradiction may be attributed to variations among animals, experimental environments, and detection methods.…”

Section: Tasj-32598_revised By Authorsupporting

confidence: 77%

Changes in Bovine Colostrum Metabolites during Early Postpartum Period Revealed by 1H-NMR Metabolomics Approach

Settachaimongkon

Wannakajeepiboon

Arunpunporn

et al. 2021

Trop. Anim. Sci. J.

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The objectives of this study were to characterize and compare non-volatile polar metabolite profiles of bovine colostrum, collected within 1 h and at 72 h after parturition, from crossbred Holstein cows raised in northeastern Thailand. The colostrum serum was characterized and compared using a non-targeted proton nuclear magnetic resonance (1H-NMR) technique combined with chemometric analysis. Results demonstrated that the main effect of post-parturition time provided a significant impact on the physical properties and major chemical constituents of colostrum, while the influence of farm origin and sampling month were likely undetectable. The 1H-NMR technique enabled to identify 45 non-volatile polar metabolites in the samples. Partial least-squares-discriminant analysis (PLS-DA) allowed discrimination of colostrum metabolome not only according to different times after parturition, but also the origins of the farm as well as sampling months. Differential metabolites were statistically identified as potential biomarkers accountable for the discrimination. Besides basic nutritive compounds (amino acids and sugars), several bioactive metabolites such as ascorbate, creatine, carnitine, choline, acetylcarnitine, N-acetylglucosamine, ornithine, orotate, and UPD-glucose could be successfully elucidated. Our finding reveals the application of non-targeted 1H-NMR metabolomics as an effective tool to assess the biomolecular profiles of bovine colostrum and their essential dynamics during the first three days after parturition.

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Section: Tasj-32598_revised By Authorsupporting

confidence: 77%

Changes in Bovine Colostrum Metabolites during Early Postpartum Period Revealed by 1H-NMR Metabolomics Approach

Settachaimongkon

Wannakajeepiboon

Arunpunporn

et al. 2021

Trop. Anim. Sci. J.

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“…Changes in fatty acid (FA) composition are also reported in yak colostrum. Yak colostrum produced at the earlier stages had lower SFA and higher monounsaturated FA (MUFA) and poly unsaturated FA (PUFA) levels than the colostrum collected in subsequent days [38].…”

Section: Discussionmentioning

confidence: 99%

Rapid Liquid AP-MALDI MS Profiling of Lipids and Proteins from Goat and Sheep Milk for Speciation and Colostrum Analysis

et al. 2020

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Rapid profiling of the biomolecular components of milk can be useful for food quality assessment and for food fraud detection. Differences in commercial value and availability of milk from specific species are often the reasons for the illicit and fraudulent sale of milk whose species origin is wrongly declared. In this study, a fast, MS-based speciation method is presented to distinguish sheep from goat milk and sheep colostrum at different phases. Using liquid atmospheric pressure (AP)-matrix-assisted laser desorption/ionisation (MALDI) MS, it was possible to classify samples of goat and sheep milk with 100% accuracy in one minute of data acquisition per sample. Moreover, an accuracy of 98% was achieved in classifying pure sheep milk samples and sheep milk samples containing 10% goat milk. Evaluating colostrum quality and postnatal stages represents another possible application of this technology. Classification of sheep colostrum samples that were collected within 6 hours after parturition and 48 hours later was achieved with an accuracy of 84.4%. Our data show that substantial changes in the lipid profile can account for the accurate classification of colostrum collected at the early and late time points. This method applied to the analysis of protein orthologs of different species can, as in this case, allow unequivocal speciation analysis.

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“…During the extrusion process, the solidified casein is retained in the mesh drum, while the whey liquid passes through the mesh and collects in a liquid container. After being extruded under different pressures, the moisture content of each sample was measured using the method of Cui et al [1]. Briefly, the gravimetric determination was conducted by drying the samples in a forced-convection oven (DHG-9013A, Shanghai Shanzhi instrument Equipment Co., Ltd., Shanghai, China) at 105 • C until a constant weight was achieved.…”

Section: Preparation and Drying Of Yak Milk Caseinmentioning

confidence: 99%

“…Casein is one of the most abundant proteins in dairy products, accounting for about 80% of total milk protein. It is a highly nutritious protein that contains a large amount of essential amino acids, particularly leucine and tryptophan, which are critical for normal physiological functions in humans [1,2]. Yak milk casein (also known as Qula in Tibetan), is primarily produced in the provinces of Gansu, Qinghai, Inner Mongolia, and Xinjiang in China.…”

Section: Introductionmentioning

confidence: 99%

Impact of the Pre-Dehydration and Drying Methods on the Mass Transfer and Quality Attributes of Yak Milk Casein

Wang,

Cao,

Gao

et al. 2024

Foods

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Drying is an important preservation method of casein. Traditional natural draining and drying processes have low efficiency, long processing time, and poor product quality, which urgently need to be improved. This study investigated the effects of pre-dehydration intensities (30 N 30 min (PreD1) and 50 N 30 min (PreD2)) and drying methods (including pulsed vacuum drying (PVD), infrared drying (IRD), and hot air drying (HAD)) on the drying kinetics, drying modeling, and quality of yak milk casein. These findings reveal that PreD2 and PVD both had a positive impact on shortening the drying time. Compared to other combined treatments, PreD2-PVD had the shortest drying time of 6 h. The Midilli–Kucuk mathematical model effectively predicted the drying of casein. The yak milk casein powder treated with PreD2-PVD possessed a higher content of gross compositions, superior color, lower levels of fat oxidation and 5-hydroxymethylfurfural (5-HMF), and higher emulsifying activity index (EAI) and emulsion stability index (ESI) values. Overall, combining pre-dehydration with PVD proved effective in improving the drying rate and maintaining a good quality of yak milk casein, showing promising potential for industrial applications.

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Chemical composition of yak colostrum and transient milk

Cited by 9 publications

References 36 publications

Changes in Bovine Colostrum Metabolites during Early Postpartum Period Revealed by 1H-NMR Metabolomics Approach

Changes in Bovine Colostrum Metabolites during Early Postpartum Period Revealed by 1H-NMR Metabolomics Approach

Rapid Liquid AP-MALDI MS Profiling of Lipids and Proteins from Goat and Sheep Milk for Speciation and Colostrum Analysis

Impact of the Pre-Dehydration and Drying Methods on the Mass Transfer and Quality Attributes of Yak Milk Casein

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