scholarly journals Odd- and branched-chain fatty acids in milk fat – characteristic and health properties

2014 ◽  
Vol 68 ◽  
pp. 998-1007 ◽  
Author(s):  
Agata Adamska ◽  
Jarosława Rutkowska
Keyword(s):  
Fatty Acids ◽  
Milk Fat ◽  
Branched Chain Fatty Acids ◽  
Branched Chain ◽  
Chain Fatty Acids

scholarly journals The use of clustering techniques in the elucidation or confirmation of metabolic pathways Application to the branched-chain fatty acids present in the milk fat of lactating goats

1981 ◽  
Vol 196 (2) ◽  
pp. 611-618 ◽  
Author(s):  
A M Massart-Leën ◽  
D L Massart
Keyword(s):  
Fatty Acids ◽  
Metabolic Pathways ◽  
Milk Fat ◽  
Saturated Fatty Acids ◽  
Straight Chain ◽  
Branched Chain Fatty Acids ◽  
Lactating Goats ◽  
Mathematical Techniques ◽  
Branched Chain ◽  
Chain Fatty Acids

The aim of this paper is 2-fold. (1) To propose the use of a group of mathematical techniques, called clustering, in the elucidation of complex metabolic relationships. (2) To apply clustering for the identification of related groups of saturated fatty acids having a common metabolic pathway for their biosynthesis in the milk fat of lactating goats. In this way, four groups of branched-chain fatty acids and two groups of straight-chain fatty acids are identified; the odd-numbered iso-, the even-numbered iso-, the anteiso-acids and the branched-chain fatty acids with methyl substitution in the chain, the odd-numbered straight-chain and the even-numbered straight-chain fatty acids. The long-chain fatty acids are not part of any group. The different metabolic pathways for their biosynthesis are discussed. From the results, it is concluded that clustering is indeed a potentially useful tool in the study of complex metabolic relationships.

Application of a linear regression model to study the origin of C17 branched-chain fatty acids in caprine milk fat

2019 ◽  
Vol 86 (4) ◽  
pp. 461-463
Author(s):  
Pilar Gómez-Cortés ◽  
Alfonso Cívico ◽  
Miguel Angel de la Fuente ◽  
Andrés L. Martínez Marín
Keyword(s):  
Fatty Acids ◽  
Linear Regression ◽  
Regression Model ◽  
Linear Regression Model ◽  
Milk Fat ◽  
Linseed Oil ◽  
Dairy Goats ◽  
Branched Chain Fatty Acids ◽  
Branched Chain ◽  
Chain Fatty Acids

AbstractThis research communications addresses the hypothesis that a part of iso 17:0 and anteiso 17:0 in milk fat could come from endogenous extraruminal tissue synthesis. In order to confirm this a linear regression model was applied to calculate the proportions of iso 17:0 and anteiso 17:0 in milk fat that could come from elongation of their putative precursors iso 15:0 and anteiso 15:0, respectively. Sixteen dairy goats were allocated to two simultaneous experiments, in a crossover design with four animals per treatment and two experimental periods of 25 d. In both experiments, alfalfa hay was the sole forage and the forage to concentrate ratio (33 : 67) remained constant. Experimental diets differed on the concentrate composition, either rich in starch or neutral detergent fibre, and they were administered alone or in combination with 30 g/d of linseed oil. Iso 15:0, anteiso 15:0, iso 17:0 and anteiso 17:0, the most abundant branched-chain fatty acids in milk fat, were determined by gas chromatography using two different capillary columns. The regression model resolved that 49% of iso 17:0 and 60% of anteiso 17:0 in milk fat was formed extraruminally from iso 15:0 and anteiso 15:0 elongation.

scholarly journals Short- and Branched-Chain Fatty Acids as Fecal Markers for Microbiota Activity in Vegans and Omnivores

Nutrients ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 1808
Author(s):  
Iris Trefflich ◽  
Stefan Dietrich ◽  
Annett Braune ◽  
Klaus Abraham ◽  
Cornelia Weikert
Keyword(s):  
Fatty Acids ◽  
Ammonia Concentration ◽  
Cross Sectional Study ◽  
Vegan Diet ◽  
Microbiota Composition ◽  
Cross Sectional ◽  
Branched Chain Fatty Acids ◽  
Branched Chain ◽  
Fecal Ph ◽  
Chain Fatty Acids

A vegan diet could impact microbiota composition and bacterial metabolites like short-chain (SCFA) and branched-chain fatty acids (BCFA). The aim of this study was to compare the concentrations of SCFA, BCFA, ammonia, and fecal pH between vegans and omnivores. In this cross-sectional study (vegans n = 36; omnivores n = 36), microbiota composition, fecal SCFA, BCFA, and ammonia concentrations and pH were analyzed in complete stool samples. A random forest regression (RFR) was used to identify bacteria predicting SCFA/BCFA concentrations in vegans and omnivores. No significant differences in SCFA and BCFA concentrations were observed between vegans and omnivores. Fecal pH (p = 0.005) and ammonia concentration (p = 0.01) were significantly lower in vegans than in omnivores, while fiber intake was higher (p < 0.0001). Shannon diversity was higher in omnivores compared to vegans on species level (p = 0.04) only. In vegans, a cluster of Faecalibacterium prausnitzii, Prevotella copri, Dialister spp., and Eubacterium spp. was predictive for SCFA and BCFA concentrations. In omnivores, Bacteroides spp., Clostridium spp., Ruminococcus spp., and Prevotella copri were predictive. Though SCFA and BCFA did not differ between vegans and omnivores, the results of the RFR suggest that bacterial functionality may be adapted to varying nutrient availability in these diets.

scholarly journals Chicken-eaters and pork-eaters have different gut microbiota and tryptophan metabolites

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Jie Shi ◽  
Di Zhao ◽  
Fan Zhao ◽  
Chong Wang ◽  
Galia Zamaratskaia ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Gut Microbiota ◽  
Short Chain Fatty Acids ◽  
Short Chain ◽  
Branched Chain Fatty Acids ◽  
Tryptophan Metabolites ◽  
Branched Chain ◽  
Spearman’S Correlation ◽  
Gut Microbiota Composition ◽  
Chain Fatty Acids

AbstractThis study was aimed to evaluate the differences in the composition of gut microbiota, tryptophan metabolites and short-chain fatty acids in feces between volunteers who frequently ate chicken and who frequently ate pork. Twenty male chicken-eaters and 20 male pork-eaters of 18 and 30 years old were recruited to collect feces samples for analyses of gut microbiota composition, short-chain fatty acids and tryptophan metabolites. Chicken-eaters had more diverse gut microbiota and higher abundance of Prevotella 9, Dialister, Faecalibacterium, Megamonas, and Prevotella 2. However, pork-eaters had higher relative abundance of Bacteroides, Faecalibacterium, Roseburia, Dialister, and Ruminococcus 2. In addition, chicken-eaters had high contents of skatole and indole in feces than pork-eaters, as well as higher contents of total short chain fatty acids, in particular for acetic acid, propionic acid, and branched chain fatty acids. The Spearman’s correlation analysis revealed that the abundance of Prevotella 2 and Prevotella 9 was positively correlated with levels of fecal skatole, indole and short-chain fatty acids. Thus, intake of chicken diet may increase the risk of skatole- and indole-induced diseases by altering gut microbiota.

Sign in / Sign up

Export Citation Format

Share Document