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Screening of Malaysian indigenous microalgae for antioxidant properties and nutritional value

Fourteen indigenous microalgal samples from Malaysia were isolated, purified and cultured from fresh,brackish and marine waters. The ability of the microalgae to be natural sources of antioxidants was studied by a screening test using three antioxidant chemical assays[ferric thiocyanate (FTC), thiob...

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Main Authors: Mohd Ikhsan, Natrah Fatin, Md Yusoff, Fatimah, Mohamed Din, Mohamed Shariff, Abas, Faridah, Nor Shamsudin, Mariana
Format: Article
Language:English
English
Published: Springer Verlag 2007
Online Access:http://psasir.upm.edu.my/id/eprint/7288/1/Screening%20of%20Malaysian%20indigenous%20microalgae%20for%20antioxidant%20properties%20and%20nutritional%20value.pdf
http://psasir.upm.edu.my/id/eprint/7288/
http://dx.doi.org/10.1007/s10811-007-9192-5
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spelling my.upm.eprints.72882015-10-26T02:22:40Z http://psasir.upm.edu.my/id/eprint/7288/ Screening of Malaysian indigenous microalgae for antioxidant properties and nutritional value Mohd Ikhsan, Natrah Fatin Md Yusoff, Fatimah Mohamed Din, Mohamed Shariff Abas, Faridah Nor Shamsudin, Mariana Fourteen indigenous microalgal samples from Malaysia were isolated, purified and cultured from fresh,brackish and marine waters. The ability of the microalgae to be natural sources of antioxidants was studied by a screening test using three antioxidant chemical assays[ferric thiocyanate (FTC), thiobarbituric acid (TBA) and 1, 1’-diphenyl-2-picrylhydrazyl (DPPH)]. The results showed that six microalgal methanolic crude extracts(Isochrysis galbana, Chaetoceros calcitrans, Scenedesmus quadricauda, Chlorella vulgaris, Nannochloropsis oculata and Tetraselmis tetrathele) were active in inhibiting the lipid peroxidation of linoleic acid. Among all the microalgae, I. galbana and C. calcitrans showed the highest antioxidant activity (>90%) in FTC and TBA assays, indicating that these microalgae might contain active compounds for protection from lipid peroxidation. Nutritional analyses were performed on microalgae with high antioxidant activities (I. galbana and C. calcitrans) in order to investigate their nutritive value. Both microalgae were found to be rich in nutrients. For examples, I. galbana had average percentage composition of protein, carbohydrate,and lipid, as 47.9±2.5; 26.8±0.2; 14.5±1.4%, respectively,while the corresponding values for C. calcitrans were 36.4± 1.7; 27.4±3.0; 15.5±0.9%. In addition, they contained high levels of omega-3 polyunsatrated fatty acids (PUFA)(28.0%±0.7 in I. galbana and 28.5%±1.4 in C. calcitrans),omega-6 PUFA (6.5%±1.8 in I. galbana and 23.0%±2.5 in C. calcitrans) and a high composition of essential amino acids. This study illustrates that some microalgae such as I. galbana and C. calcitrans have the potential to be used as natural sources of antioxidants with high nutritional value. Springer Verlag 2007 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/7288/1/Screening%20of%20Malaysian%20indigenous%20microalgae%20for%20antioxidant%20properties%20and%20nutritional%20value.pdf Mohd Ikhsan, Natrah Fatin and Md Yusoff, Fatimah and Mohamed Din, Mohamed Shariff and Abas, Faridah and Nor Shamsudin, Mariana (2007) Screening of Malaysian indigenous microalgae for antioxidant properties and nutritional value. Journal of Applied Phycology, 19 (6). pp. 711-718. ISSN 0921-8971 http://dx.doi.org/10.1007/s10811-007-9192-5 10.1007/s10811-007-9192-5 English
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
English
description Fourteen indigenous microalgal samples from Malaysia were isolated, purified and cultured from fresh,brackish and marine waters. The ability of the microalgae to be natural sources of antioxidants was studied by a screening test using three antioxidant chemical assays[ferric thiocyanate (FTC), thiobarbituric acid (TBA) and 1, 1’-diphenyl-2-picrylhydrazyl (DPPH)]. The results showed that six microalgal methanolic crude extracts(Isochrysis galbana, Chaetoceros calcitrans, Scenedesmus quadricauda, Chlorella vulgaris, Nannochloropsis oculata and Tetraselmis tetrathele) were active in inhibiting the lipid peroxidation of linoleic acid. Among all the microalgae, I. galbana and C. calcitrans showed the highest antioxidant activity (>90%) in FTC and TBA assays, indicating that these microalgae might contain active compounds for protection from lipid peroxidation. Nutritional analyses were performed on microalgae with high antioxidant activities (I. galbana and C. calcitrans) in order to investigate their nutritive value. Both microalgae were found to be rich in nutrients. For examples, I. galbana had average percentage composition of protein, carbohydrate,and lipid, as 47.9±2.5; 26.8±0.2; 14.5±1.4%, respectively,while the corresponding values for C. calcitrans were 36.4± 1.7; 27.4±3.0; 15.5±0.9%. In addition, they contained high levels of omega-3 polyunsatrated fatty acids (PUFA)(28.0%±0.7 in I. galbana and 28.5%±1.4 in C. calcitrans),omega-6 PUFA (6.5%±1.8 in I. galbana and 23.0%±2.5 in C. calcitrans) and a high composition of essential amino acids. This study illustrates that some microalgae such as I. galbana and C. calcitrans have the potential to be used as natural sources of antioxidants with high nutritional value.
format Article
author Mohd Ikhsan, Natrah Fatin
Md Yusoff, Fatimah
Mohamed Din, Mohamed Shariff
Abas, Faridah
Nor Shamsudin, Mariana
spellingShingle Mohd Ikhsan, Natrah Fatin
Md Yusoff, Fatimah
Mohamed Din, Mohamed Shariff
Abas, Faridah
Nor Shamsudin, Mariana
Screening of Malaysian indigenous microalgae for antioxidant properties and nutritional value
author_facet Mohd Ikhsan, Natrah Fatin
Md Yusoff, Fatimah
Mohamed Din, Mohamed Shariff
Abas, Faridah
Nor Shamsudin, Mariana
author_sort Mohd Ikhsan, Natrah Fatin
title Screening of Malaysian indigenous microalgae for antioxidant properties and nutritional value
title_short Screening of Malaysian indigenous microalgae for antioxidant properties and nutritional value
title_full Screening of Malaysian indigenous microalgae for antioxidant properties and nutritional value
title_fullStr Screening of Malaysian indigenous microalgae for antioxidant properties and nutritional value
title_full_unstemmed Screening of Malaysian indigenous microalgae for antioxidant properties and nutritional value
title_sort screening of malaysian indigenous microalgae for antioxidant properties and nutritional value
publisher Springer Verlag
publishDate 2007
url http://psasir.upm.edu.my/id/eprint/7288/1/Screening%20of%20Malaysian%20indigenous%20microalgae%20for%20antioxidant%20properties%20and%20nutritional%20value.pdf
http://psasir.upm.edu.my/id/eprint/7288/
http://dx.doi.org/10.1007/s10811-007-9192-5
_version_ 1643823678489624576
score 13.211869

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