Moisture adsorption and spoilage characteristics of pea under adverse storage conditions
Notice bibliographique
Résumé
Field pea is the most produced and exported pulse crop in Canada, and makes a major contribution to Western Canadian agricultural diversification programs.Canada is now the world largest exporter of pea, lentil and chickpea and is fourth in dry bean.The demand for Canadian pulse products is steadily rising and the export market would continue to rise with the expected increased in production.Field pea exported to countries with tropical climates is at particular risk due to rapid loss of quality.It is therefore important to develop practical strategies for safe storage of feed pea.Knowledge on the moisture adsorption and spoilage characteristics of pea stored in adverse storage conditions is important in the transportation and storage of this export commodity.This study was initiated to examine the conditions that lead to quality losses in storage and transport of pea.Tropical and subtropical conditions were simulated in airtight chambers.Relative humidities (RH) of 60, 70, 80 and 90% were created by saturated salt solutions in airtight chambers at temperatures of 10, 20 and 30C, while the same range of humidity was provided by dilute sulphuric acid in airtight chambers at 40C in environmental cabinets.The four RH levels at each temperature for both whole and feed-grade pea were tested in duplicate.The samples were observed for changes in moisture content (MC), mold appearance and RH in specific time intervals.The amount of produced carbon dioxide (CO 2 ) was measured in airtight chambers during storage to control the condition existing in sealed airtight chambers.Also, all components of feedgrade pea were exposed to RH of 90% and temperature of 40C in separate airtight chambers to find the effect of each component on mold appearance.Molds were identified after appearance on the samples in order to pinpoint potential toxicity.Both feed and whole sound peas became molded after a short time of storage at high temperatures and high RH, but those stored at 70% and below did not develop mold after 175 days at 30 and 40C (experiment duration) and 216 days at 10 and 20C (experiment duration).Molds were identified mostly as species of Aspergillus and Penicillium.The amount of CO 2 in the airtight chambers showed almost no difference from the ambient CO 2 except at high temperature and high RH when samples had gone molded.Moisture adsorption equations were developed based on the moisture adsorption data in dynamic environment.Although the Page model showed to fit the data better, the exponential model was chosen to fit the data because its parameters can be better expressed as a function of temperature and RH of the storage environment.The mold-free days for both feed pea and clean pea were modeled at temperatures of 10, 20, 30 and 40C and RH of 80 and 90%.v
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Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,001 |
| Méta-épidémiologie (sens large) | 0,001 | 0,000 |
| Bibliométrie | 0,001 | 0,001 |
| Études des sciences et des technologies | 0,000 | 0,001 |
| Communication savante | 0,000 | 0,002 |
| Science ouverte | 0,001 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,001 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule tête enseignante, pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».