Search results for "diet"

CCDC 1555142: Experimental Crystal Structure Determination

2018

Related Article: Yann Bernhard, Philippe Richard, Richard A. Decréau|2018|Tetrahedron|74|1047|doi:10.1016/j.tet.2018.01.029

Prefractionation of aroma extracts from fat-containing food by high-performance size-exclusion chromatography

1996

A method for the prefractionation of aroma extracts of fat-containing food using high-performance size-exclusion chromatography is presented. The aim was to obtain a fraction of volatile compounds with a residual triglyceride content as low as possible, in order to allow its direct analysis by gas chromatography. Two different mobile phases, diethyl ether and dichloromethane, were tested and the elution volumes of triglycerides and a large variety of aroma compounds were measured. The quality of separation between triglycerides and volatile compounds as a function of column load was studied. The method was successfully applied to the analysis of goat cheese volatiles.

Retention behaviour of volatile compounds in normal-phase high-performance liquid chromatography on a diol column

1993

Abstract Retention data on a diol column for over 300 compounds of the chemical classes usually contained in aroma extracts of plants and foodstuffs are reported. A concept that largely corrects for minor fluctuations of the mobile phase composition and of the flow-rate was used to measure capacity factors. The mobile phase was composed of pentane and diethyl ether. The high volatility of these two solvents makes the method perfectly adaptable to the prefractionation of aroma extracts and the semi-preparative isolation of compounds. Non-polar compounds such as hydrocarbons are not retained on diol. Polar compounds can be readily eluted, with the exception of strong acids and bases.

Effect of onion consumption by rats on hepatic drug-metabolizing enzymes

2001

Fruits and vegetables or their natural constituents which increase detoxication enzymes and/or reduce activating enzymes are considered as good candidates to prevent chemically-induced carcinogenesis. In this study, rats were fed a diet supplemented with 20% onion powder for 9 days. Several cytochrome P450 (CYP)s enzymes (CYP 1A, 2B, 2E1, 3A), which are involved in carcinogen activation, were determined by measuring their enzyme activities using specific substrates. In addition, phase II enzymes activities such as UDP-glucuronosyltransferase (UGT) and glutathione S-transferase (GST), involved in detoxication of carcinogens, were measured. Protein levels of CYPs and GST A1/A2, A3/A5, Ml, M2 …

A multidisciplinary approach to Neolithic dietary reconstruction: the case of “le Vigneau” site (ca. 4400 BC; Indre-et-Loire, France)

2016

International audience

Co-creation of food solutions to sustain health and autonomy in older adults

2022

DIY Protein Fortification: What foods are suitable for UK older adults to fortify at home? The recipe for success

2022

Acceptance of health innovation in their food in French older consumers

2022

Development of innovative food-based fortification solutions to sustain health in older people using a co-creation approach

2022

Lipopolysaccharides and glucagon-like peptide 1 : from molecular mechanisms to pathophysiology

2016

Obesity and type 2 diabetes are metabolic diseases which have reached epidemic proportions worldwide. These metabolic disorders are related to a low grade inflammation whose molecular origin is still unknown. Previous studies have highlighted the involvement of the gut microbiota and especially components of the cell wall of Gram(-) bacteria: lipopolysaccharides (LPS). We have recently shown that LPS enhance glucagon-like peptide 1 (GLP-1) plasma levels, a hormone which is known to stimulate insulin secretion. Moreover there would be a link between the nutritional qualities of food and LPS plasma levels. Thus diet, LPS and GLP-1 may be closely related. The present work focuses on i) the mol…