Composition of canola seed sprouts fermented by Aureobasidium pullulans, Neurospora crassa, and Trichoderma reesei under submerged-state fermentation
2021
Alhomodi, Ahmad F. | Zavadil, Andrea | Berhow, Mark | Gibbons, William R. | Karki, Bishnu
Seed sprouts are nutrient-rich components, and their use in human and animal diets have increased in recent times. Microbial fermentation of seed sprouts not only improves the nutrient digestibility but also elevates the nutritional characteristics by lowering the level of antinutritional factors (ANFs). This study evaluates the effect of sprouting followed by fungal fermentation on the nutritional characteristics of canola seed sprouts. Canola seeds were soaked overnight and sprouted over a 6-day period. Dried and ground seed sprouts were subjected to submerged fermentation for 5 days using three fungal strains (Aureobasidium pullulans, Trichoderma reesei, Neurospora crassa). Results showed an improvement in proteins and reduction in ANFs of sprouts when compared to seeds. Fermentation with T. reesei resulted in higher protein titers, while N. crassa fermented sprouts exhibited slight reduction in crude fiber. Sprouting prior to fermentation helped in enhancing the protein solubility of canola seed and reducing the overall fermentation duration. Based on these findings it could be concluded that sprouting prior to fermentation can potentially lead to the production of nutritionally enriched canola based high protein ingredient. However, further research needs to be conducted to develop a mechanism for minimizing the oil loss during seed sprouting process.
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