Tài liệu Sử dụng chiết xuất Beta-Glucan từ rong biển để tăng sức đề kháng cho tôm biển.pdf

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103

SỬ DỤNG CHIẾT SUẤT β-GLUCAN TỪ RONG

BIỂN ĐỂ TĂNG SỨC ĐỀ KHÁNG CỦA TÔM BIỂN:

TỔNG QUAN

Huỳnh Trường Giang1

, Vũ Ngọc Út1

và Trương Quốc Phú1

ABSTRACT

Seaweed is considered to be a rich source of polysaccharides. The

polysaccharide extracted from seaweed to be described having an interesting

biological activity was probably the β-glucan. Among seaweed species, agar

and carrageenan are names given to various β-glucan extracted from the red

seaweeds, which are mainly comprised of galactose and agarose. Fucoidan,

laminarin, and alginate are β-glucans from the brown seaweeds containing

glucose, fucose, manose, and gulose.

Shrimp lack an adaptive immune system and their defense mechanisms depend

exclusively on innate immunity consisting of physical barrier, cellular and

humoral components that can recognize and eliminate foreign particles in

which haemocytes play important roles in innate immune response of shrimp.

β-glucans showed ability to stimulate the proliferation of haemocytes, and

triggered release of defensive enzymes and antimicrobial peptides (AMPs). β￾glucans have successfully been used to increase immune response and

resistance against vibriosis and viral infection in penaeid shrimp such as tiger

shrimp Penaeus monodon, kuruma shrimp Marsupenaeus japonicus, white

shrimp Litopenaeus vannamei, fleshy shrimp Fenneropenaeus chinensis,

yellowleg shrimp Farfantepenaeus californiensis and Sao Paulo shrimp

Farfantepenaeus paulensis. Administration of β-glucan through immersion is

considered as a practical way of stimulating shrimp immunity. However, oral

administration is non-stressful and allows mass administration regardless of

shrimp size. For the effective use of β-glucans, the timing, dosages and route of

administration need to be taken into consideration.

Keywords: seaweed extract, shrimp, immunostimulant, innate immunity, β￾glucan, immune response.

Tittle: Use of β-glucan extracted from seaweed in shrimp immunity

enhancement: A review

TÓM TẮT

Rong biển chứa nhiều các hợp chất polysaccharide. Các hỗn hợp

1

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