Search results for "milieu"
showing 10 items of 19813 documents
Influence of label and location of testing on acceptability of cream cheese varying in fat content
1995
The acceptability of low-, medium- and high-fat versions of a cream cheese to consumers was measured in different conditions by rating overall distance from ideal. The influence of label (unlabelled vs. commercial package) differed according to the cream cheese fat-level habits of the assessors and to the fat level of the product. In labelled testing, high-fat cream cheese was more highly accepted by high- and medium-fat users and low-fat cream cheese seemed to be further from ideal for high-fat users. The location of testing (home vs. laboratory) affected the rating of only the high-fat product: consumers are more severe on it at home than in the laboratory.
Identité narrative, déprise et vécu du vieillissement
2018
Cet article se propose d’envisager le rapport entre deprise et recit de soi comme source de continuite identitaire dans une perspective philosophique, en reference a la notion d’identite narrative de Paul Ricœur. Si le recit de soi permet de mettre en forme le temps que l’on vit sans supposer un noyau non changeant de l’identite, ce recit devrait favoriser le processus de deprise. Mais cette mise en forme du temps par le recit se heurte a plusieurs obstacles : l’invisibilite de notre propre vieillissement qui ne nous laisse pas l’elaborer, sauf a souscrire aux regards exterieurs qui nous objectivent ; la difficulte d’articuler ce recit avec nos valeurs fondamentales dans la duree du temps d…
“Is there any sugar in bread?” A qualitative video analysis of student activating learning tasks in Home Economics
2021
The Norwegian Food and Health (FH) school subject aims to develop students' ability to understand the association between diet and health. Research on FH in Norway indicates that the main focus today is on cooking and the development of practical cooking skills, leaving little emphasis on activities related to the more theoretical aspects of the curriculum. To increase students’ knowledge and skills regarding nutrition and health, we aimed to evaluate three newly developed student-activating learning tasks. Three 6th grade FH classes in Southern Norway participated. Audio and video recording of the learning tasks were used to evaluate the activities. Also, data from focus group discussions …
A matching task as a potential technique for descriptive profile validation
2003
If panellists can successfully match products to the corresponding descriptive profiles, then the profiles can be regarded as product-relevant and valid. This work examined the ability of a trained panel to perform a matching task between products and their descriptive profiles. A 13-member panel, trained to assess eight cheeses in terms of 19 flavour attributes, performed the task based on their individually developed profiles. The panel's ability to match products to profiles was well above that expected by chance, and chi-square statistics for each of the products were significant (P<0.05). A correspondence analysis based on the group results indicated that all the products were relative…
Characterization of crustacyanin-A2 subunit as a component of the organic matrix of gastroliths from the crayfish Cherax quadricarinatus.
2009
AbstractLike the lobsters, some terrestrial crabs and other crayfishes, the Australian red claw crayfish, Cherax quadricarinatus, elaborates in its stomach wall calcium storage structures called gastroliths. For understanding the cyclic elaboration and stabilization of these amorphous calcified structures, we studied the organic matrix (OM) of these paired biomineralizations. After decalcification with acetic acid, we analysed the proteinaceous components of an acetic acid-insoluble fraction by two-dimensional electrophoresis. Nine spots were digested by trpsin and the tryptic peptides were sequenced by nanoLC-nanoESI-MS/MS mass spectrometry. About 100 peptidic sequences were compared to se…
Multisite field potential recordings and analysis of the impulse propagation pattern in cardiac cells culture
2007
To provide further insights into the impulse propagation between cardiac myocytes, we performed multiparametric studies of excitation spread with cellular resolution in confluent monolayers of cultured cardiomyocytes (CM). Simultaneous paired intracellular recordings of action potentials in two individual CM revealed slight periodic spontaneous advances/delays in the interspike time lag. Multisite field potential recordings performed with microelectrode arrays (MEA) confirmed random and iterative cycle-to-cycle changes in the direction of excitation spread. These local spontaneous variations in the cardiac impulse propagation pathways may be a safety process protecting against microscopical…
Influence of sugar and fat contents on preference for cream cheese: A preliminary study
1993
Abstract In order to assess the importance of fat and sugar in acceptability of semi-solid French cream cheese, 30 subjects gave a hedonic judgement, after consumption, for three formulations (150 g) varying in fat content which they were required to sweeten and for nine small previously sweetened samples (30 g). Subjects participated in five laboratory meals, cream cheese being the third part of a meal. After this period, the subjects filled out a questionnaire measuring attitudes, beliefs and intention of behaviour with regard to consumption of cream cheese. Sugar level had no significant effect on the hedonic judgement. However, the subjects added less sugar in the high fat cream cheese …
Balancing of mitochondrial translation through METTL8-mediated m3C modification of mitochondrial tRNAs.
2021
Mitochondria contain a specific translation machinery for the synthesis of mitochondria-encoded respiratory chain components. Mitochondrial tRNAs (mt-tRNAs) are also generated from the mitochondrial DNA and, similar to their cytoplasmic counterparts, are post-transcriptionally modified. Here, we find that the RNA methyltransferase METTL8 is a mitochondrial protein that facilitates 3-methyl-cytidine (m3C) methylation at position C32 of the mt-tRNASer(UCN) and mt-tRNAThr. METTL8 knockout cells show a reduction in respiratory chain activity, whereas overexpression increases activity. In pancreatic cancer, METTL8 levels are high, which correlates with lower patient survival and an enhanced resp…
Biomineralization toolkit: the importance of sample cleaning prior to the characterization of biomineral proteomes.
2013
In an interesting work published recently in PNAS, Drake et al. (1) presented a proteomic study of the skeleton from the stony coral Stylophora pistillata . This study identified proteins that are associated to the mineral phase (i.e., that potentially contribute to shape the skeleton). In other words, this set of proteins is supposed to represent the so-called “biomineralization toolkit.” Although some of the 36 proteins reported in Drake et al. (1) appear as genuine extracellular matrix (ECM) proteins related to biomineralization, such as coral acid-rich proteins or carbonic anhydrase, some others are obvious intracellular contaminants that should not be considered as skeletal organic mat…
Analysis of metabolic pathways by the growth of cells in the presence of organic solvents
1996
A new approach to the analysis of metabolic pathways involving poorly water-soluble intermediates is proposed. It relies upon the ability of the hydrophobic intermediates formed by a sequence of intracellular reactions to cross the membrane(s) and partition between aqueous and organic phases, when cells are incubated in the presence of a nonpolar and nontoxic organic solvent. As a result of this thermodynamically driven efflux of the formed intermediates from the cell, they accumulate in the organic medium in sufficient quantities for GC-MS analysis and identification. This enables direct determination of the sequence of chemical reactions involved with no requirement for the isolation of e…