Đăng nhập
 
Tìm kiếm nâng cao
 
Tên bài báo
Tác giả
Năm xuất bản
Tóm tắt
Lĩnh vực
Phân loại
Số tạp chí
 

Bản tin định kỳ
Báo cáo thường niên
Tạp chí khoa học ĐHCT
Tạp chí tiếng anh ĐHCT
Tạp chí trong nước
Tạp chí quốc tế
Kỷ yếu HN trong nước
Kỷ yếu HN quốc tế
Book chapter
Bài báo - Tạp chí
Số 04 (2016) Trang: 71-80
Tải về

Article info.

 

ABSTRACT

Received date: 31/08/2015

Accepted date: 30/11/2016

 

The aims of this study were to evaluate antioxidant activity of polysaccharide extracted from S. microcystum and examine its positive effect on growth performance and survival of whiteleg shrimp (Litopenaeus vannamei). Polysaccharides from brown seaweed Sargassum microcystum were extracted by four methods (1) hot-water within 3 h, (2) hot-water within 6 h, (3) 0.1N HCl (100°C) within 3 h, and (4) 0.1N HCl (100°C) within 6 h. The extracts were then analyzed for chemical composition and antioxidant activities. The extract showed the highest antioxidant activity could be used to examine its effectiveness on whiteleg shrimp culture via dietary administration. For trial on shrimp, whiteleg shrimp were reared in a recirculating seawater system with 500-L tanks and fed the pellet diets containing 0.5, 1.0, and 2.0% of hot-water extract. Shrimp were fed the diet without extract supplemented served as control group (0%). After 60 days of feeding, survival rate and growth parameters of shrimp were evaluated. The results showed that protein concentrations of polysaccharide extracts were low and varied from 1.3 to 6.8%. The polysaccharide extracted with hot-water within 6h was higher phlorotannin, glucose and L-fucose concentrations than those in other extracts. However, higher SO42- concentration was found in 0.1N HCl extract within 3 h extract. The significant interactions between solvent and extraction time were observed that affecting yield of polysaccharide and chemical composition as phlorotannin, glucose and SO42- concentrations. Hot-water within 6 h extract showed the highest antioxidant activity indicating by high DPPH free radical scavenging (IC50 = 0.434 mg mL-1) and ferric reducing power activity (OD0.5 = 2.55 mg mL-1). Whiteleg shrimp that being fed the diets incorporating with hot-water extracts at 1.0% had significantly higher growth performance than those in the control diet. However, there was no significant differences in daily length gain and survival rates among treatments. Therefore, it is concluded that polysaccharide extracted from S. microcystum could be growth promoter in whiteleg shrimp culture.

Keywords

Antioxidant activity, growth performance, polysaccharide, Sargassum microcystum, Litopenaeus vananmei

Cited as: Giang, H.T., Giang, T.T., Oanh, D.T.H., Ngoc, T.S. and Ut, V.N., 2016. Chemical composition, antioxidant activity of crude polysaccharide extracted from brown seaweed Sargassum microcystum and its effect on growth performance and survival of whiteleg shrimp Litopenaeus vannamei via dietary administration. Can Tho University Journal of Science. Vol 4: 71-80.

Các bài báo khác
Số 25 (2013) Trang: 183-191
Tải về
Số 02 (2016) Trang: 69-76
Tải về
(2014) Trang: 24
Tạp chí: Aquaculture and Fisheries: A Focus in the Mekong Delta, Viet Nam, April 3-5, 2014, Can Tho University, Can Tho city, Viet Nam
(2014) Trang: 42
Tạp chí: Aquaculture and Environment:A focus in the Mekong delta, Viet Nam, April 3-5, 2014, Can Tho University, Can Tho city, Viet Nam
(2014) Trang: 202
Tạp chí: 4th International Fisheries Symposium, JW Marriot Hotel-Surabaya-Indonesia, October 30-31th, 2014
 

Crossref DOI of CTUJoS


BC thường niên 2018


Con số ấn tượng (VN | EN)


Bản tin ĐHCT


TCKH tiếng Việt


TCKH tiếng Anh

 
 
Vui lòng chờ...