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dc.contributor.authorKumar, Vivek
dc.contributor.authorFotedar, Ravi
dc.identifier.citationKumar, Vivek and Fotedar, Ravi. 2009. Agar extraction process for Gracilaria cliftonii (Withell, Miller and Kraft, 1994). Carbohydrate Polymers. 78 (4): pp. 813-819.

Agar extraction process was developed for Gracilaria cliftonii by investigating the effects of various extraction variables and alkali treatments on agar yield and properties. The tested variables were soaking time, soaking temperature, seaweed to water ratio of, extraction temperatures and extraction time. Alkali treatments were carried out in alkali concentrations of 1%, 2%, 3% and 5% in a water bath at 60, 70 and 80 C prior to agar extraction. The results showed that agar yield was significantly affected by all the tested variables. The agar yield was maximised when extraction process was carried out with 1 h soaking time at 30 C with seaweed to water ratio of 1:150 and extracted for 3 h at 100 C. The alkali-temperature combinations significantly influenced agar yield and properties. Irrespective of temperature, alkali treatments at 3% and 5% significantly increased the gel strength.

dc.subjectExtraction temperature
dc.subjectAlkali treatment
dc.subjectSoaking temperature
dc.subjectSoaking time
dc.subjectSeaweed-water ratio
dc.subjectExtraction time
dc.titleAgar extraction process for Gracilaria cliftonii (Withell, Miller and Kraft, 1994)
dc.typeJournal Article
dcterms.source.titleCarbohydrate Polymers

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curtin.accessStatusFulltext not available
curtin.facultySchool of Agriculture and Environment
curtin.facultyDepartment of Applied Biosciences
curtin.facultyFaculty of Science and Engineering

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