Carotenoprotein from Pacific white shrimp (<i>Litopenaeus vannamei</i>) shells extracted using trypsin from albacore tuna (<i>Thunnus alalunga</i>) spleen: Antioxidant activity and its potential in model systems
Bibliographic record
Abstract
Antioxidative activities of carotenoprotein from Pacific white shrimp shells extracted by trypsin from albacore tuna spleen were investigated. Carotenoprotein exhibited increased DPPH, ABTS radical scavenging activities, ferric reducing antioxidant power (FRAP), metal chelating activity, hydrogen peroxide, and hydroxyl radical scavenging activities as concentration increased up to 5 mg/mL (p < .05). ABTS radical scavenging activity of carotenoprotein was stable over a wide pH range (2–11) and temperature up to 100°C for 180 min. It was also stable in a simulated gastrointestinal tract model system. Carotenoprotein was able to reduce lipid oxidation in a dose-dependent manner. During storage at room temperature, light and dark, 4°C and −20°C for 12 weeks, the ABTS radical scavenging activity of carotenoprotein was stable with more than 75.75% activity retention. Therefore, Pacific white shrimp carotenoprotein may be used as an alternative source of natural antioxidants. Practical applications Carotenoprotein from Pacific white shrimp shells, the by-products from shrimp processing industry, can be extracted using tuna trypsin. This product possessed antioxidative activities and could serve as natural antioxidant to prevent lipid oxidation in foods.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot 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.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
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.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
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".