NGHIÊN CỨU THU NHẬN BỘT MÀU CHLOROPHYLL TỪ RONG NƯỚC LỢ CHEATOMORPHA SP. ĐỒNG BẰNG SÔNG CỬU LONG=THE RESEARCH ON CHLOROPHYLL POWDER FROM ALGAE CHAETOMORPHA SP. IN MEKONG DELTA

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Tác giả: Ánh Lê Thị Hồng, Nguyễn Minh Kiên, Trần Trung Kiên, Nhơn Hoàng Thị Ngọc

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Tạp chí Khoa học Công nghệ và Thực phẩm (Tên mới: Tạp chí Khoa học Đại học Công Thương), 2017

Mô tả vật lý: tr.30

Bộ sưu tập: Metadata

ID: 493731

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Chlorophyll is a natural pigment, it plays a key role in photosynthesis and it is very essential for surviving of most of plants, algae and cyanobacteria. Chlorophyll is used widespreadly not only in food technology as a food addition agent (E140) but also in cosmetic, in pharmaceutical industry because of their benefits for humans. In this study, we chose algae material Cheatomorpha sp. derived from Mekong Delta to carry out the chlorophyll extraction, then using vacuum evaporator to enhaned the content of chlorophyll before spray drying to obtain chlorophyll powder. The extraction stage used fresh algae and in the conditions of solvent extraction with ethanol 80%, the ratio of algea material/ethanol 1/15, in the time of 24 hours in the dark, adding MgCO3 0,5% compared with materials to help increase extraction capabilities. Results showed that there was 34,03mg/l chlorophyll in extraction solution. The concentrated samples was increased the dry matter concentration from 12%, to 13,5% by adding maltodextrin. After spray drying, the chlorophyll powder was soluble, moisture 5,4%, can be applied in food production. The recovery yield of chlorophyll was 62,96%. Keyword: Cheatomorpha sp., chlorophyllChlorophyll là một sắc tố màu tự nhiên đóng vai trò quan trọng trong quá trình quang hợp, rất cần thiết cho sự sinh tồn của hầu hết các thực vật, tảo và vi khuẩn cyanobacteria. Chlorophyll không những được sử dụng phổ biến trong công nghiệp thực phẩm như là một loại phụ gia trong sản xuất thực phẩm (E140) mà còn được dùng rộng rãi trong mỹ phẩm, dược phẩm bởi chúng có rất nhiều tác dụng cho cơ thể người. Trong nghiên cứu này, chúng tôi sử dụng nguyên liệu rong mền Cheatomorpha sp. được thu nhận ở khu vực đồng bằng Sông Cửu Long (huyện Đông Hải, tinh Bạc Liêu) để thực hiện quá trình trích ly chlorophyll, tiến hành cô đặc dịch trích ly bằng phương pháp cô quay chân không và sấy phun để thu được bột màu xanh chlorophyll. Nguyên liệu dạng rong tươi trích ly với dung môi ethanol 80%, tỉ lệ nguyên liệu/ethanol là 1/15 (w/v), thời gian trích ly 24 giờ trong điều kiện tối, sử dụng MgCO3 0,5% so với nguyên liệu để giúp tăng khả năng trích ly. Kết quả thu được dịch trích ly có lượng chlorophyll 34,03 mg/l. Tiến hành cô đặc mẫu bằng cô quay chân không ở nhiệt độ 480C, thu được dịch trích ly có nồng độ chât khô 12%, bổ sung maltodextrin đến 13,5%. Sấy phun thu được chế phẩm bột màu xanh chlorophyll mịn, độ ẩm 5,4%, tan tốt trong nước có thể ứng dụng trong sản xuât thực phẩm, hiệu suất thu hôi chlorophyll là 62,96%. Từ khóa: Cheatomorpha sp., chlorophyll.

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