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Title

COMPARISON OF PROXIMATE COMPOSITION IN WILD AND FARMED AZOLLA (AZOLLA FILICULOIDES)

Pages

 Start Page 45 | End Page 56

Abstract

 This study was conducted to evaluate the amount of moisture, protein, lipid and ash of wild and farmed Azolla (Azolla filiculoides) for nutritional application of livestock and human. Fatty acid composition of Azolla, a key component for making decision about the NUTRITIONAL VALUE, of both Wild and farmed types was also compared. The Azolla samples were collected from Pirbazar region, ANZALI WETLAND and cultured in aquarium containing appropriate medium to consider the process of growth and propagation. The fatty acid composition of wild and farmed samples was determined according to the Folch method for GC Analysis after the lipid esterification. No significant difference (p>0.05) was observed between wild and farmed Azolla in the amount of saturated FATTY ACIDS (SFAs), monounsaturated FATTY ACIDS (MUFAs), and polyunsaturated FATTY ACIDS (PUFAs). However, palmitic acid, margaric acid, oleic acid, cis-linoleic acid, and a-linolenic acid of wild Azolla was significantly higher than farmed type (p<0.05). In contrast, lignoceric acid amount of farmed Azolla was significantly (p<0.05) higher than wild Azolla. Given the appropriate amount of lipid, both types of wild and farmed Azolla could be used as feed for livestock, poultry and even human, although wild Azolla had more lipid content compared to the farmed type. Furthermore, speed of propagation followed by the short doubling time of Azolla in vitro provides the ability for adequate amounts of oil extraction from this fern.

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