Morphological and physico-chemical characteristics of 'Red Creole' Allium cepa L. in three production areas in the Philippines
2016
Del Carmen, DR. | Espigol, A.M.D. | Nuevo, P.A. | Masilungan, G.D.
A survey was conducted in the three major onion growing areas in the Philippines, namely, Mindoro Occidental, Nueva Ecija, and Pangasinan to augment and update the limited available data on the local 'Red Creole' variety. This was followed by laboratory determination of the morphological and physico-chemical characteristics of bulb onions that affect the taste, flavor and postharvest behavior of the produce. Correlation between these characteristics was also investigated. These are deemed important as basis in developing effective interventions and/or strategies in the produce quality and marketing systems improvement. Results showed that onions obtained from Nueva Ecija are superior in terms of size and compressive strength while onions obtained from Mindoro have the highest pungency values. Onions from Pangasinan are small with the lowest weight value but have the thickest leaf sheath. Bulb weight is positively related to compressive strength, but is negatively related to total soluble solids. Bulb height also shows positive correlation with compressive strength and negative correlation with total solids. The bulb's equatorial diameter and firmness are also negatively correlated. Lastly, onion's outer leaf sheath thickness is also positively correlated with pungency.
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