Nghiên cứu phương pháp thủy phân phế thải rong nâu sử dụng kết hợp axit và enzym
Đỗ Trung Sỹ1, Hoàng Thị Bích2, Đỗ Quang Kháng1, Ngô Quốc Anh1
1Viện Hóa học, Viện Hàn lâm Khoa học và Công nghệ Việt Nam
2Viện Hóa học các hợp chất thiên nhiên, Viện Hàn lâm Khoa học và Công nghệ Việt Nam
Brown seaweed waste is a byproduct from the process of extracting alginate and containing large amounts of cellulose. The amount of waste during the alginate processing is very high around 6 tonnes of waste over 1 ton of product. Seaweed waste is treated with dilute sulfuric acid followed by hydrolysis with enzymes Celiac Tech2. Under optimum conditions of the process with dilute acid pretreatment (0.1%, 1200C, 1h) then hydrolyzation by the enzyme (500C, pH 5.0, 50h) the highest obtained glucose is 215 mg / g. Transformation of hydrolyzed products into ethanol by Saccharomyces cerevisiae 7028 V at room temperature for 36h achieved yield of 46.9%, equivalent to 92% of theoretical yield. These results showed that the seaweed waste is promising potential raw material for the production of bioethanol.
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