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Resumen del producto
Vergara-Rodarte, M.A., G., Hernández Carmona, Y.E., Rodríguez Montesinos, D.L., Arvizu Higuera, R., Riosmena-Rodriguez & J.I., Murillo-Álvarez
(2010).
Seasonal variation of agar from Gracilaria vermiculophylla, effect of alkali treatment time, and stability of its Colagar.
Journal of Applied Phycology.
22(6): 753-759.
DOI: 10.1007/s10811-010-9516-8.
Seasonal variation of agar from Gracilaria vermiculophylla, effect of alkali treatment time, and stability of its Colagar
Mario Antonio Vergara-Rodarte, Gustavo Hernández Carmona, Yoloxochilt Elizabeth Rodríguez Montesinos, Dora Luz Arvizu Higuera, Rafael Riosmena-Rodriguez y Jesús Iván Murillo-Álvarez
Gracilaria vermiculophylla, from Baja California Sur, Mexico, was studied in order to determine the seasonal variation of yield and quality of native and alkaline agar during 2007–2008. The highest alkaline agar yield was obtained in summer (17%) and the highest gel strength in spring (1,132 gcm?2). The highest melting temperature was 98°C (winter). The highest gelling temperature was 68°C (summer). The values obtained are within the range of the most important Gracilaria species harvested worldwide. During the agar extraction step, the best results were obtained after 30 min of alkali treatment with sodium hydroxide (7%), after which the quality decreased significantly. We produced Colagar from G. vermiculophylla which consists of the seaweeds treated with sodium hydroxide and dried. The yield and quality of the agar obtained from the Colagar shows stability in both yield and quality during 1 year of storage, suggesting that alkali treatment is a good method of avoiding agar hydrolysis during storage.
Palabras clave: Baja California Sur; polisacáridos; Gracilaria; Storage; Gel strength; Producción
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