Investigation of the relationship between skin-emitted volatile fatty acids and skin surface acidity in healthy participants—a pilot study

2021 ◽  
Vol 15 (3) ◽  
pp. 037101
Author(s):  
Tasneem Shetewi ◽  
Melissa Finnegan ◽  
Shane Fitzgerald ◽  
Shuai Xu ◽  
Emer Duffy ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Pilot Study ◽  
Volatile Fatty Acids ◽  
Surface Acidity ◽  
Skin Surface ◽  
The Relationship ◽  
Healthy Participants

scholarly journals Short-Chain Fatty Acids

2020 ◽  
Author(s):  
Paulina Markowiak-Kopeć ◽  
Katarzyna Śliżewska
Keyword(s):  
Fatty Acids ◽  
Volatile Fatty Acids ◽  
Short Chain Fatty Acids ◽  
Short Chain ◽  
Intestinal Microbiome ◽  
Test Results ◽  
And Function ◽  
The Relationship ◽  
Normal Health ◽  
Chain Fatty Acids

The relationship between diet and the diversity and function of the intestinal microbiomeand its importance for human health is currently the subject of many studies. The type and proportionof microorganisms found in the intestines can determine the energy balance of the host. Intestinalmicroorganisms perform many important functions, one of which is participation in metabolicprocesses, e.g., in the production of short-chain fatty acids—SCFAs (also called volatile fatty acids).These acids represent the main carbon flow from the diet to the host microbiome. Maintainingintestinal balance is necessary to maintain the host’s normal health and prevent many diseases.The results of many studies confirm the beneficial effect of probiotic microorganisms on the balanceof the intestinal microbiome and produced metabolites, including SCFAs. The aim of this review is tosummarize what is known on the effects of probiotics on the production of short-chain fatty acidsby gut microbes. In addition, the mechanism of formation and properties of these metabolites isdiscussed and verified test results confirming the effectiveness of probiotics in human nutrition bymodulating SCFAs production by intestinal microbiome is presented.

scholarly journals Bioproducts generation from carboxylate platforms by the non-conventional yeast Yarrowia lipolytica

2021 ◽  
Author(s):  
Young-Kyoung Park ◽  
Cristina González-Fernández ◽  
Raúl Robles-Iglesias ◽  
Lea Vidal ◽  
Pierre Fontanille ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Yarrowia Lipolytica ◽  
Volatile Fatty Acids ◽  
Oleaginous Yeast ◽  
Current Knowledge ◽  
Value Added ◽  
Building Blocks ◽  
Renewable Sources ◽  
The Relationship ◽  
Yeast Yarrowia Lipolytica

Abstract In recent years, there has been a growing interest in the use of renewable sources for bio-based production aiming at developing sustainable and feasible approaches towards a circular economy. Among these renewable sources, organic wastes (OWs) can be anaerobically digested to generate carboxylates like volatile fatty acids (VFAs), lactic acid, and longer-chain fatty acids that are regarded as novel building blocks for the synthesis of value-added compounds by yeasts. This review discusses on the processes that can be used to create valuable molecules from OW-derived VFAs; the pathways employed by the oleaginous yeast Yarrowia lipolytica to directly metabolize such molecules; and the relationship between OW composition, anaerobic digestion, and VFA profiles. The review also summarizes the current knowledge about VFA toxicity, the pathways by which VFAs are metabolized, and the metabolic engineering strategies that can be employed in Y. lipolytica to produce value-added biobased compounds from VFAs.

scholarly journals The Effect of Probiotics on the Production of Short-Chain Fatty Acids by Human Intestinal Microbiome

Nutrients ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 1107 ◽  
Author(s):  
Paulina Markowiak-Kopeć ◽  
Katarzyna Śliżewska
Keyword(s):  
Fatty Acids ◽  
Volatile Fatty Acids ◽  
Short Chain Fatty Acids ◽  
Short Chain ◽  
Intestinal Microbiome ◽  
Test Results ◽  
And Function ◽  
The Relationship ◽  
Normal Health ◽  
Chain Fatty Acids

The relationship between diet and the diversity and function of the intestinal microbiome and its importance for human health is currently the subject of many studies. The type and proportion of microorganisms found in the intestines can determine the energy balance of the host. Intestinal microorganisms perform many important functions, one of which is participation in metabolic processes, e.g., in the production of short-chain fatty acids—SCFAs (also called volatile fatty acids). These acids represent the main carbon flow from the diet to the host microbiome. Maintaining intestinal balance is necessary to maintain the host’s normal health and prevent many diseases. The results of many studies confirm the beneficial effect of probiotic microorganisms on the balance of the intestinal microbiome and produced metabolites, including SCFAs. The aim of this review is to summarize what is known on the effects of probiotics on the production of short-chain fatty acids by gut microbes. In addition, the mechanism of formation and properties of these metabolites is discussed and verified test results confirming the effectiveness of probiotics in human nutrition by modulating SCFAs production by intestinal microbiome is presented.

The relationship between milk composition and volatile fatty acids in the rumen in cattle

2001 ◽  
Vol 2001 ◽  
pp. 194-194
Author(s):  
T. Yan ◽  
R. E. Agnew
Keyword(s):  
Fatty Acids ◽  
Dairy Cows ◽  
Milk Fat ◽  
Protein Concentration ◽  
Volatile Fatty Acids ◽  
Milk Composition ◽  
Empirical Relationships ◽  
The Relationship

It is well recognised that the fat and protein concentration in the milk of dairy cows is influenced by volatile fatty acids (VFAs) produced in the rumen. There has however been little information available on models to predict milk composition from rumen VFAs in the literature. The objective of the present study was to develop empirical relationships to predict milk fat and protein concentration using rumen VFA data.

scholarly journals Foraging behavior and ruminal fermentation of dairy cows grazing ryegrass pasture alone or with white clover

2012 ◽  
Vol 47 (3) ◽  
pp. 458-465 ◽  
Author(s):  
Henrique Mendonça Nunes Ribeiro Filho ◽  
Jean-Louis Peyraud ◽  
Rémy Delagarde
Keyword(s):  
Fatty Acids ◽  
Experimental Design ◽  
Dairy Cows ◽  
Perennial Ryegrass ◽  
White Clover ◽  
Volatile Fatty Acids ◽  
Rumen Fluid ◽  
Latin Square ◽  
Ruminal Fermentation ◽  
The Relationship

The objective of this work was to evaluate the influence of pasture composition and regrowth age on the relationship between feeding behavior and ruminal fermentation in dairy cows grazing perennial ryegrass with or without white clover. The experiment was carried out in a 2x2 factorial arrangement, with two sward types and two ages of regrowth. Swards of perennial ryegrass sown alone (PRG) and of perennial ryegrass mixed with white clover (GC) were evaluated. Twelve late-lactation Holstein cows, fistulated at the rumen, were distributed in a 4x4 latin square experimental design with four 12-day periods. Daily distribution of grazing was similar in the PRG and the GC swards, but the concentration of rumen volatile fatty acids (VFA) was higher and the proportion of propionate was lower on mixed swards during the day. Daily distribution of grazing was similar in pastures of different ages. However, in the oldest swards, rumen fluid pH increased and VFA concentration decreased after evening milking. Time spent grazing does not influence ruminal fermentation, which depends on the changes that occur as different sward layers are grazed.

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