Bioethanol production from edible insect excreta: a case study on frass from house crickets
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.
Bibliographic record
Abstract
House crickets are among the most promising edible insect species for inclusion in future agri-food systems. Their appeal stems from environmentally sustainable rearing practices, a high nutritional value, and a long history of traditional use as food. Additionally, their rearing produces a byproduct known as frass, which holds potential as a valuable biomaterial. The utilization of house cricket frass as a substrate for bioethanol production was explored. Frass was digested with cellulases at 10% enzyme/dry matter of substrate, 50°C, pH=5, 48 h. This hydrolysis was combined with different treatments, like acidic (1% sulfuric acid) and alkaline (1% sodium hydroxide), and compared to protease treatment (50°C, pH=6.8, 24 h). The production of sugar and free amino proteins reached 30 and 5 g/L, respectively. Several yeast strains, isolated and identified from various organic waste sources, were tested. The fermentation was performed with Saccharomyces cerevisiae for 48 h with frass hydrolysate, pretreated with sulfuric acid, and digested with proteases and cellulases. The addition of molasses at 0‒60 g/L was considered. Sugar consumption exceeded 80%, with ethanol concentrations reaching 12.56 g/L without molasses and 30.57 g/L with the addition of molasses. Cricket frass was utilized as a substrate for bioethanol production, and the process was significantly enhanced by supplementing it with sugar beet molasses.
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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 | 0.002 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.001 | 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 it