Extraction of antioxidants from Chlorella sp. using subcritical water treatment
Chlorella sp. microalgae is one of the main source of natural bioactive compounds used in the food and pharmaceutical industries. Subcritical water extraction is the technique that offers an efficient, non-toxic, and environmental-friendly method to obtain natural ingredients. In this work, the extr...
| Main Authors: | , , , , |
|---|---|
| Format: | Conference or Workshop Item |
| Language: | English |
| Published: |
2017
|
| Online Access: | http://psasir.upm.edu.my/id/eprint/61829/ http://psasir.upm.edu.my/id/eprint/61829/1/Extraction%20of%20antioxidants%20from%20Chlorella%20sp.%20using%20subcritical.pdf |
| _version_ | 1848854498445885440 |
|---|---|
| author | Zakaria, Siti Maisurah Mustapa Kamal, Siti Mazlina Harun, Mohd Razif Omar, Rozita Siajam, Shamsul Izhar |
| author_facet | Zakaria, Siti Maisurah Mustapa Kamal, Siti Mazlina Harun, Mohd Razif Omar, Rozita Siajam, Shamsul Izhar |
| author_sort | Zakaria, Siti Maisurah |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Chlorella sp. microalgae is one of the main source of natural bioactive compounds used in the food and pharmaceutical industries. Subcritical water extraction is the technique that offers an efficient, non-toxic, and environmental-friendly method to obtain natural ingredients. In this work, the extracts of Chlorella sp. microalgae was evaluated in terms of: chemical composition, extraction (polysaccharides) yield and antioxidant activity, using subcritical water extraction. Extractions were performed at temperatures ranging from 100°C to 300°C. The results show that by using subcritical water, the highest yield of polysaccharides is 23.6 that obtained at 150°C. Analysis on the polysaccharides yield show that the contents were highly influenced by the extraction temperature. The individual antioxidant activity were evaluated by in vitro assay using a free radical method. In general, the antioxidant activity of the extracts obtained at different water temperatures was high, with values of 31.08-54.29 . The results indicated that extraction by subcritical water was effective and Chlorella sp. can be a useful source of natural antioxidants. |
| first_indexed | 2025-11-15T11:10:49Z |
| format | Conference or Workshop Item |
| id | upm-61829 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T11:10:49Z |
| publishDate | 2017 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-618292019-02-19T07:11:14Z http://psasir.upm.edu.my/id/eprint/61829/ Extraction of antioxidants from Chlorella sp. using subcritical water treatment Zakaria, Siti Maisurah Mustapa Kamal, Siti Mazlina Harun, Mohd Razif Omar, Rozita Siajam, Shamsul Izhar Chlorella sp. microalgae is one of the main source of natural bioactive compounds used in the food and pharmaceutical industries. Subcritical water extraction is the technique that offers an efficient, non-toxic, and environmental-friendly method to obtain natural ingredients. In this work, the extracts of Chlorella sp. microalgae was evaluated in terms of: chemical composition, extraction (polysaccharides) yield and antioxidant activity, using subcritical water extraction. Extractions were performed at temperatures ranging from 100°C to 300°C. The results show that by using subcritical water, the highest yield of polysaccharides is 23.6 that obtained at 150°C. Analysis on the polysaccharides yield show that the contents were highly influenced by the extraction temperature. The individual antioxidant activity were evaluated by in vitro assay using a free radical method. In general, the antioxidant activity of the extracts obtained at different water temperatures was high, with values of 31.08-54.29 . The results indicated that extraction by subcritical water was effective and Chlorella sp. can be a useful source of natural antioxidants. 2017 Conference or Workshop Item PeerReviewed text en http://psasir.upm.edu.my/id/eprint/61829/1/Extraction%20of%20antioxidants%20from%20Chlorella%20sp.%20using%20subcritical.pdf Zakaria, Siti Maisurah and Mustapa Kamal, Siti Mazlina and Harun, Mohd Razif and Omar, Rozita and Siajam, Shamsul Izhar (2017) Extraction of antioxidants from Chlorella sp. using subcritical water treatment. In: 29th Symposium of Malaysian Chemical Engineers (SOMChE) 2016, 1-3 Dec. 2016, Miri Marriott Resort & Spa, Miri, Sarawak, Malaysia. (pp. 1-9). https://iopscience.iop.org/article/10.1088/1757-899X/206/1/011001/meta 10.1088/1757-899X/206/1/012035 |
| spellingShingle | Zakaria, Siti Maisurah Mustapa Kamal, Siti Mazlina Harun, Mohd Razif Omar, Rozita Siajam, Shamsul Izhar Extraction of antioxidants from Chlorella sp. using subcritical water treatment |
| title | Extraction of antioxidants from Chlorella sp. using subcritical water treatment |
| title_full | Extraction of antioxidants from Chlorella sp. using subcritical water treatment |
| title_fullStr | Extraction of antioxidants from Chlorella sp. using subcritical water treatment |
| title_full_unstemmed | Extraction of antioxidants from Chlorella sp. using subcritical water treatment |
| title_short | Extraction of antioxidants from Chlorella sp. using subcritical water treatment |
| title_sort | extraction of antioxidants from chlorella sp. using subcritical water treatment |
| url | http://psasir.upm.edu.my/id/eprint/61829/ http://psasir.upm.edu.my/id/eprint/61829/ http://psasir.upm.edu.my/id/eprint/61829/ http://psasir.upm.edu.my/id/eprint/61829/1/Extraction%20of%20antioxidants%20from%20Chlorella%20sp.%20using%20subcritical.pdf |