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Please use this identifier to cite or link to this item: http://cmuir.cmu.ac.th/jspui/handle/6653943832/72096
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dc.contributor.authorWipawee Yothipitaken_US
dc.contributor.authorPraiya Thanaen_US
dc.contributor.authorMotonobu Gotoen_US
dc.contributor.authorArtiwan Shotipruken_US
dc.date.accessioned2021-04-23T08:50:39Z-
dc.date.available2021-04-23T08:50:39Z-
dc.date.issued2008en_US
dc.identifier.citationChiang Mai Journal of Science 35, 1 (January 2008),109-115en_US
dc.identifier.issn2465-3845en_US
dc.identifier.urihttps://epg.science.cmu.ac.th/ejournal/dl.php?journal_id=347en_US
dc.identifier.urihttp://cmuir.cmu.ac.th/jspui/handle/6653943832/72096-
dc.descriptionThe Chiang Mai Journal of Science is an international English language peer-reviewed journal which is published in open access electronic format 6 times a year in January, March, May, July, September and November by the Faculty of Science, Chiang Mai University. Manuscripts in most areas of science are welcomed except in areas such as agriculture, engineering and medical science which are outside the scope of the Journal. Currently, we focus on manuscripts in biology, chemistry, physics, materials science and environmental science. Papers in mathematics statistics and computer science are also included but should be of an applied nature rather than purely theoretical. Manuscripts describing experiments on humans or animals are required to provide proof that all experiments have been carried out according to the ethical regulations of the respective institutional and/or governmental authorities and this should be clearly stated in the manuscript itself. The Editor reserves the right to reject manuscripts that fail to do so.en_US
dc.description.abstractIn this study, experimental design was employed in order to investigate the effects of operating condition on supercritical carbon dioxide extraction of astaxanthin from Haematococcus pluvialis and essential oils from Amomum krevanh Pierre. The factors investigated for astaxanthin were operating temperature (40-80 oC), the operating pressure (300-500 bar), and the extraction time (1-4 hours). The results showed that the main effect of operating pressure, the main effect of extraction time, and the interaction effect between operating temperature and operating pressure were significant factors for the astaxanthin yields. From the response surface model of the experimental data, an optimal condition for astaxanthin content was found to be at the temperature of 90oC, the pressure of 640 bar, and the extraction time of 2.9 hours. This condition yields the highest amount of astaxanthin extract of 22.66 mg/g dry algae. The factors investigated for essential oil were operating temperature (30-70oC), the operating pressure (90-260 bar), and the extraction time (20-70 min).en_US
dc.language.isoEngen_US
dc.publisherFaculty of Science, Chiang Mai Universityen_US
dc.subjectSupercritical carbon dioxideen_US
dc.subjectHaematococcus pluvialisen_US
dc.subjectAmomum krevanh Pierreen_US
dc.subjectAstaxanthinen_US
dc.subjectEssential oilen_US
dc.subjectCentral composite designen_US
dc.titleExperiments and Statistical Analysis of Supercritical Carbon Dioxide Extractionen_US
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