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Record W2365249008

Effects of fructus forsythiae extracts on scavenging oxygen free radical and aliphatic free radical

2008· article· en· W2365249008 on OpenAlexaff
Qiuyun Tu

Bibliographic record

Venuenot available
Typearticle
Languageen
FieldAgricultural and Biological Sciences
TopicPhytochemistry and Biological Activities
Canadian institutionsCAE (Canada)
Fundersnot available
KeywordsChemistryScavengingEthanolAntioxidantRadicalActive ingredientTraditional medicineFood scienceChromatographyOrganic chemistryPharmacologyBiology
DOInot available

Abstract

The scavenging ability of fructus forsythiae ethanol extracts on R·,OH· and O2-· was evaluated by means of photometric method,using BHA as control sample.And the relationship between inhibitory behavior to free radical and extracts concentration and time was also investigated and compared.Experimental results demonstrated that fructus forsythiae ethanol extracts could scavenge R· and inhibit oil oxidization significantly,and it could also scavenge OH· and O2-· efficiently,and the scavenging content 50%(EC50) of extracts was about 1.2 mg/mL and 100 μg/mL respectively.Under parallel experimental conditions the antioxidative ability of fructus forsythiae extracts is better than that of BHA,and fructus forsythiae extracts could be developed as a natural effective antioxidant.

Stored with the screening record, where it is evidence for the labels above.

How this classification was reachedexpand

The three-model screen

all 5,600 screened works →

All three models called this out of scope.

stratum: aff_core · design weight: 5595.24 (the sample is stratified; any rate computed without the weight is wrong)
Claude Opus 4.8OUT
genre: empirical
about Canada: no
confidence: high

Phytochemistry study of free radical scavenging by Forsythia fruit extracts.

GPT-5.6 (high)OUT
genre: empirical
about Canada: no
confidence: high

It evaluates antioxidant activity of a plant extract, not research itself.

Grok 4.5OUT
genre: empirical
about Canada: no
confidence: high

Phytochemical antioxidant assay of plant extracts; domain chemistry/biology.

Full frame machine prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Bench or experimental · Consensus signal: Bench or experimental
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.001
Threshold uncertainty score0.000

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0010.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0010.000

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 head0.015
GPT teacher head0.199
Teacher spread0.184 · 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

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designBench or experimental
Domainnot available
GenreEmpirical

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations0
Published2008
Admission routes1
Has abstractyes

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