Document Type : Research Paper
Authors
Research Institute of Forests and Rangelands, P.O.Box 13185 – 116, Tehran, Iran
Abstract
The source of agar is a family of red seaweeds (Rhodophyceae) of which Gracilaria canaliculata and Gracilaria foliifera are examples of commercially important genera. Agar is a strongly gelling seaweed hydrocolloid composed of polysaccharides. The main structure of agar is chemically characterized by the repeating units of D-galactose and 3,6-anhydro- L- galactose with a few variations, as well as by low ester sulphate content.
In this investigation two samples of the Gracilaria to be harvested in Qeshm shores in Hormozgane provine (2001) for agar production. With Ethanol 95% and 75% carbohydrate of Agar extracted. Then solution Extracted centrifuged in 3500 U/min for 10 mint. We used, solution extract for determination of carbohydrate from Antron methods by Spectrophotometry (HITACHI 340) in 625 nm. The total carbohydrate content in Gracilaria canaliculata is 10.79% and Gracilaria foliifera 12.03%.
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