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Record W4384692847 · doi:10.22215/etd/2023-15561

In Vitro Antioxidant and Enzyme Inhibitory Activity of Oat Bran-Derived Protein Hydrolysates and Peptides and their effect on the Fat Accumulation in 3T3-L1 Cells

2023· dissertation· en· W4384692847 on OpenAlexfundno aff
Ramak Esfandi

Bibliographic record

Venuenot available
Typedissertation
Languageen
FieldBiochemistry, Genetics and Molecular Biology
TopicProtein Hydrolysis and Bioactive Peptides
Canadian institutionsnot available
FundersNatural Sciences and Engineering Research Council of Canada
KeywordsAntioxidantChemistryHydrolysateBiochemistryOxidative stressLipid oxidationInsulin resistanceFood scienceInsulinEndocrinologyBiologyHydrolysis

Abstract

fetched live from OpenAlex

In recent decades, there has been a surge in interest in the production, identification, and application of bioactive protein hydrolysates and peptides derived from dietary plant and animal sources.They can be antioxidants, antihypertensives, immunomodulators, hypoglycemics, antibacterial agents, antidiabetics, anti-obesity agents.Their activity is affected by the amino acid sequence, hydrophobicity, and peptide length.To promote health, these bioactive substances can quench free radicals, modify enzyme activity, and modulate gene/protein expression in biological pathways.In many situations, these peptides are multifunctional; however, only a limited number of studies have focused on assessing the multifunctionality of these bioactive molecules.Obesity, on the other hand, develops as a complex multifactorial disease because of excessive fat accumulation in adipocytes, which significantly alters gene and protein expression, and low-grade inflammation because of increased oxidative stress, leading to other complications such as cardiovascular disease or type 2 diabetes.Treatment with multifunctional bioactive peptides may minimize lipid accumulation and oxidative stress while regulating the expression of adipogenic-relevant genes and proteins.The study hypothesis was that enzymatically digested oat bran produces protein hydrolysates and bioactive peptides with multifunctional properties such as antioxidant activity, lipase and α-amylase inhibition, and reduction of fat accumulation in differentiated 3T3-L1 preadipocytes.Enzymatically digested oat bran generated a protein hydrolysate sample mixture (VPI-Pa) using viscozyme and papain to generate the hydrolysates that showed the maximum activity in peroxyl radical scavenging (866.9 ± 10.6 µM TE/g) and metal chelating activity (75.0 ± 0.4%).Although all the selected My first and foremost thanks go to my supervisors, Dr. Apollinaire Tsopmo and Dr. William Willmore.I am thankful for all the help, advice, motivating words, and patience you have given me.Next, I wish to

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.

How this classification was reachedexpand

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 score0.002
Threshold uncertainty score0.005

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0010.000
Meta-epidemiology (broad)0.0000.001
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.001
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 head0.011
GPT teacher head0.252
Teacher spread0.241 · 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

Citations1
Published2023
Admission routes1
Has abstractyes

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