The Fucoxanthin content and antioxidant properties of Undaria Pinnatifida from Marlborough Sound, New Zealand

aut.embargoNoen_NZ
aut.thirdpc.containsNoen_NZ
aut.thirdpc.permissionNoen_NZ
aut.thirdpc.removedNoen_NZ
dc.contributor.advisorLu, Jun
dc.contributor.advisorHamid, Nazimah
dc.contributor.authorFung, Adah Yee Chuen
dc.date.accessioned2012-09-04T02:46:02Z
dc.date.available2012-09-04T02:46:02Z
dc.date.copyright2012
dc.date.created2012
dc.date.issued2012
dc.date.updated2012-09-03T05:49:10Z
dc.description.abstractUndaria pinnatifida (U.pinnatifida) is a type of brown seaweed native to the temperate shores of Japan, Korea and China. It was introduced to New Zealand accidently through ships travelling from Asia in 1987. Since then, it has widely spread to areas frequented by vessels in New Zealand. This study was carried out to investigate the fucoxanthin content and antioxidant properties of U.pinnatifida collected from the Marlborough Sounds, New Zealand. U.pinnatifida was collected from two locations - Port Underwood and Pelorus Sound of the Marlborough Sounds, from their appearance in late autumn (June) to the onset of senescence in early summer (November), 2011. Results showed that freeze dried U.pinnatifida harvested from Port Underwood had higher fucoxanthin content in the blade particularly in July, August and September compared to Pelorus Sound. The sporophyll which is usually discarded when processing U.pinnatifida as a dried food product was also found to contain a significant amount of fucoxanthin, but all lower than that in the blade, throughout the harvest season. New Zealand U.pinnatifida was further processed in this study to produce cut wakame, which was the most popular form of commercially dried products available in New Zealand. The New Zealand processed U.pinnatifida was compared to four other commercial dried products from Korea (Ottogi and Chung Jung Won) and Japan (Wako Shokai and Riken) in terms of their fucoxanthin content and antioxidant activities. For antioxidant measurement, 1,1- diphenyl-2-picrylhydrazyl assay (DPPH) and cupric reducing antioxidant capacity (CUPRAC) were utilised. Processed U.pinnatifida had lower fucoxanthin content and antioxidant capacities compared to the freeze-dried U.pinnatifida. Fucoxanthin content and antioxidant activity of New Zealand processed U.pinnatifida was not significantly different from other commercial samples. In conclusion, sporophyll is a useful resource for fucoxanthin extraction, and New Zealand U.pinnatifida is a valuable food or nutraceuticals resource, as it has similar fucoxanthin content and antioxidant activity compared with Japanese and Korean U.pinnatifida products.en_NZ
dc.identifier.urihttps://hdl.handle.net/10292/4589
dc.language.isoenen_NZ
dc.publisherAuckland University of Technology
dc.rights.accessrightsOpenAccess
dc.subjectFucoxanthinen_NZ
dc.subjectAntioxidanten_NZ
dc.subjectUndaria Pinnatifidaen_NZ
dc.titleThe Fucoxanthin content and antioxidant properties of Undaria Pinnatifida from Marlborough Sound, New Zealanden_NZ
dc.typeThesis
thesis.degree.discipline
thesis.degree.grantorAuckland University of Technology
thesis.degree.levelMasters Theses
thesis.degree.nameMaster of Applied Scienceen_NZ
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