The invention relates to an extracting and
processing technique of carrageen by utilizing
eucheuma, which comprises the procedures of cleaning, alkali treatment, washing,
enzymatic hydrolysis, extracting, filtering, potassic alteration,
dehydration, crushing and
drying. By adopting
enzyme biotechnology technology, the extraction rate and quality of
carrageenan are improved, while the
production cycle and
energy consumption thereof being lowered.
Colloid dissolves out of carrageen cells completely after the organization of
cellulose in carrageen
cell wall being destroyed during the procedure of
enzymatic hydrolysis, thus improving the extraction rate of
carrageenan. Meanwhile, the time of boiling procedure is shortened and the temperature thereof is lowered. The yield of products is increased and steam consumption during the process is reduced.
Small molecule pigments also dissolve out of carrageen cells during the procedure of
enzymatic hydrolysis, thus improving the transparency and purity of the obtained
carrageenan. Since
alcohol is adopted in
dehydration procedure, the
water content of the products is greatly reduced. Meanwhile,
bactericidal effect of
alcohol is favorable to inhibit the breeding of microorganisms during the process, thereby fulfilling the objective of disinfection and bacteriostasis. The above technique has the advantages of high extraction efficiency, high
utilization rate of raw materials and high transparency and purity of the obtained carrageenan.