Exploring the link between microbial community structure and flavour compounds of traditional fermented yak milk in Gannan region

Li, Hongqiang; Yang, Xiaoling; Tang, Defu; Xi, Bin; Li, Weihong; Chen, Zhaohui; Bao, Yongqing; Dingkao, Renqing; Gao, Yaqin; Wang, Peng; Wang, Hongbo

doi:10.1016/j.foodchem.2023.137553

Cited by 5 publications

(3 citation statements)

References 36 publications

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“…In addition, it is operated under normal pressure and uses nitrogen as a carrier gas, which reduces the operation cost. Furthermore, a wide array of VOCs in different samples can be screened by these technologies when combined with chemometrics such as PCA, partial least squares-discriminant analysis (PLS-DA), orthogonal partial least squares-discriminant analysis (OPLS-DA), etc [ [17] , [18] , [19] ]. Meanwhile, several studies have used GC-MS and GC-IMS to examine differences in volatile flavor substances in various food products [ 20 ].…”

Section: Introductionmentioning

confidence: 99%

GC-IMS and multivariate analyses of volatile organic components in different Chinese breeds of chickens

Li,

Zhao,

Qin

et al. 2024

Heliyon

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Section: Introductionmentioning

confidence: 99%

GC-IMS and multivariate analyses of volatile organic components in different Chinese breeds of chickens

Li,

Zhao,

Qin

et al. 2024

Heliyon

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“…In China, tens of thousands of tons of yak milk and its dairy products are produced every year [ 8 ]. Gannan yaks are grazed in natural pastures all year round without using additives and antibiotic drugs [ 9 ]. Therefore, Yak milk has great potential for development and utilization, and is an ideal raw material for producing various dairy products such as butter, ghee, cheese, yogurt, etc.…”

Section: Introductionmentioning

confidence: 99%

Association between Single Nucleotide Polymorphisms of PRKD1 and KCNQ3 Gene and Milk Quality Traits in Gannan Yak (Bos grunniens)

Ma,

Yang,

Zhang

et al. 2024

Foods

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Protein kinase D1 (PRKD1) functions primarily in normal mammary cells, and the potassium voltage-gated channel subfamily Q member 3 (KCNQ3) gene plays an important role in controlling membrane potential and neuronal excitability, it has been found that this particular gene is linked to the percentage of milk fat in dairy cows. The purpose of this study was to investigate the relationship between nucleotide polymorphisms (SNPs) of PRKD1 and KCNQ3 genes and the milk quality of Gannan yak and to find molecular marker sites that may be used for milk quality breeding of Gannan yak. Three new SNPs were detected in the PRKD1 (g.283,619T>C, g.283,659C>A) and KCNQ3 gene (g.133,741T>C) of 172 Gannan lactating female yaks by Illumina yak cGPS 7K liquid-phase microarray technology. Milk composition was analyzed using a MilkoScanTM milk composition analyzer. We found that the mutations of these three loci significantly improved the lactose, milk fat, casein, protein, non-fat milk solid (SNF) content and acidity of Gannan yaks. The lactose content of the TC heterozygous genotype population at g.283,619T>C locus was significantly higher than that of the TT wild-type population (p < 0.05); the milk fat content of the CA heterozygous genotype population at g.283,659C>A locus was significantly higher than that of the CC wild-type and AA mutant populations (p < 0.05); the casein, protein and acidity of the CC mutant and TC heterozygous groups at the g.133,741T>C locus were significantly higher than those of the wild type (p < 0.05), and the SNF of the TC heterozygous group was significantly higher than that of the mutant group (p < 0.05). The results showed that PRKD1 and KCNQ3 genes could be used as candidate genes affecting the milk traits of Gannan yak.

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“…In addition, yak milk and its dairy products are also the foundation and main source of nutrition for the daily food intake of Tibetan herdsmen. Compared with cow milk, yak milk has a lower yield, but its protein content, fat content, and dry matter content are all higher than cow milk, and it has more comprehensive bioactive ingredients and unique microbial resources [ 4 , 5 ]. In recent years, with the continuous improvement of people’s living standards, the demand for high-quality dairy products has been increasing.…”

Section: Introductionmentioning

confidence: 99%

Polymorphisms within the PRKG1 Gene of Gannan Yaks and Their Association with Milk Quality Characteristics

Feng,

Yang,

et al. 2024

Foods

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Yak milk, known as the “liquid gold”, is a nutritious food with extensive consumption. Compared with cow milk, yak milk contains higher levels of nutrients such as dry matter, milk fat, and milk protein, which demonstrates great potential for exploitation and utilization. Protein kinase cGMP-dependent 1 (PRKG1) is an important functional molecule in the cGMP signaling pathway, and its significant influence on milk fatty acids has been discovered. The aim of this study is to explore the correlation between single nucleotide polymorphisms (SNPs) in the PRKG1 gene and the quality traits of Gannan yak milk in order to identify candidate molecular markers for Gannan yak breeding. In this study, genotyping was performed on 172 healthy, 4–5-year-old lactating Gannan yaks with similar body types, naturally grazed, and two to three parity. Three SNPs (g.404195C>T, g.404213C>T, and g.760138T>C) were detected in the PRKG1 gene of Gannan yaks, which were uniformly distributed in the yak population. Linkage disequilibrium analysis was conducted, revealing complete linkage disequilibrium between g.404195C>T and g.404213C>T. After conducting a correlation analysis between SNPs in the PRKG1 gene and milk quality in Gannan yaks, we found that PRKG1 SNPs significantly increased the content of casein, protein, and SNFs in yak milk. Among them, the TT homozygous genotype at the PRKG1 g.404195C>T loci exhibited higher casein and protein contents compared to the CC and CT genotypes (p < 0.05). The SNP g.760138T>C locus was associated with casein, protein, SNFs, and TS traits (p < 0.05). The CC genotype had higher casein and protein contents than the TT and TA genotypes (p < 0.05). However, there were no significant differences in milk fat, lactose, and acidity among the three genotypes (p > 0.05). In summary, PRKG1 gene polymorphism can serve as a candidate molecular marker for improving milk quality in Gannan yaks.

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Exploring the link between microbial community structure and flavour compounds of traditional fermented yak milk in Gannan region

Cited by 5 publications

References 36 publications

GC-IMS and multivariate analyses of volatile organic components in different Chinese breeds of chickens

GC-IMS and multivariate analyses of volatile organic components in different Chinese breeds of chickens

Association between Single Nucleotide Polymorphisms of PRKD1 and KCNQ3 Gene and Milk Quality Traits in Gannan Yak (Bos grunniens)

Polymorphisms within the PRKG1 Gene of Gannan Yaks and Their Association with Milk Quality Characteristics

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