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Record W2104664751 · doi:10.5650/jos.50.339

Analysis of Dietary Trans Fatty Acids.

2001· article· en· W2104664751 on OpenAlex

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.

Bibliographic record

VenueJournal of Oleo Science · 2001
Typearticle
Languageen
FieldNursing
TopicFatty Acid Research and Health
Canadian institutionsHealth Canada
Fundersnot available
KeywordsCis–trans isomerismStructural isomerChemistryFatty acidGas chromatographyLinoleic acidChromatographyOrganic chemistry

Abstract

fetched live from OpenAlex

In partially hydrogenated vegetable oils (PHVO) more than 40 cis and trans fatty acids, primarily of the C18 chain length are possible. Partially hydrogenated fish oils (PHFO), invariably have much more complex fatty acid profiles because of the large number of possible isomers of the chain lengths ranging from C16 to C22. Traditionally, total trans content was determined by infrared (IR) spectroscopic techniques that do not quantify individual fatty acids. Nowadays, a satisfactory, and near quantitative analysis of fatty acid profile of PHVO can be achieved by gas chromatography (GC) using 100 m long capillary columns coated with highly polar cyanolsilicone stationary phases. In these columns, there is very little overlap of cis and trans isomers. Almost all the cyanosilicone capillary columns are capable of readily separating the low delta value trans 18:1 isomers (up to and including 12t-18:1) from the cis-18:1 isomers. If appropriate GC operating conditions are selected, then some cyanosilicone columns, especially, SP-2560 and CP-Sil 88, could provide a satisfactory saparation of the high delta isomers (13t-18:1, 14t-18:1, 16t-18:1) from the cis isomers. The 15t-18:1 is the only isomer that cannot be separated from the cis isomers. The geometric and positional isomers of linoleic and α-linolenic acids that are normally encountered in dietary fats could also be easily separated on cyanosilicone capillary columns. For applications requiring more precise trans fatty acid data and detailed information of individual isomers, it is necessary to couple capillary GC analysis with either silver nitrate-thin-layer or -high pressure liquid chromatography.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.002
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.580
Threshold uncertainty score0.199

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0020.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0010.003
Science and technology studies0.0000.001
Scholarly communication0.0000.001
Open science0.0010.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.051
GPT teacher head0.369
Teacher spread0.318 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it