Influence of acetic and lactic acids on cocoa flavan-3-ol degradation through fermentation-like incubations
Bibliographic record
Abstract
The biochemical reactions occurring inside cocoa beans during fermentation are mostly due to penetration of lactic and acetic acids issued from microbial activities. In the present study, fresh, ripe cocoa beans were subjected to three fermentation-like incubation schemes: incubation for 2 days at pH 4 in a solution of acetic acid, lactic acid, or both, followed by a 3-days incubation at pH 5 in acetic acid solution. After each treatment applied, the fermentation index was above 1 and a cut test revealed a brown color, characteristic of well-fermented beans. As shown by RP-HPLC-ESI(−)-MS/MS analysis, the main flavan-3-ols found in German Cocoa (Amelonado group) and ICS 40 (Trinitario group) ranked as follows: epicatechin > C1 > B2 > catechin > B5 > dehydrodiepicatechin A. In both natural fermentations and fermentation-like incubations, these compounds showed a sharp decrease, this effect being strongest when acetic acid was present from the start. Lactic acid exhibited a somewhat polyphenol-protective effect. Two procyanidins with a molecular weight of 576, undetected before fermentation, were evidenced here for the first time in both incubated and naturally fermented cocoa beans.
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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) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| 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".