Carotenoid extraction from shrimp waste

Astaxanthin is a xanthophyll carotenoid, which exhibits many important biological activities including a high degree of antioxidant capacity (AOC) and antibacterial activity, hence has a significant applicability in food, pharmaceutical and cosmetic industries.

7p vijiraiya2711 27-05-2020 12 1   Download

In this study, factors affecting the extraction yield of carotenoids from dried shrimp waste by organic solvents have been studied. The results showed that the solvent ratio hexane: acetone = 3: 1 gave the highest carotenoid yield. At this ratio of solvent’s mixture, the carotenoid yield reached highest at temperature 60 C after 2 hours extraction, which was 44.64 µg/g raw shrimp waste (d.b.) (ratio of solvent to raw material 3/1). Ultrasound or vortexing gave higher extraction yield than in static conditions, which was 1.8- fold to 1.5- fold increase, respectively.

7p chauchaungayxua2 07-01-2020 9 1   Download

Carotenoprotein was extracted by a hydrolysis method using both inorganic and organic acids. Shrimp heads were firstly hydrolyzed by adding a 0.2% (w/v) hydrochloric acid solution at room temperature for an hour following by hydrolyzing with a 0.4% (v/w) formic acid solution for another 2 h at the same temperature. The obtained carotenoprotein consisted of high contents of protein (57.8 wt.%) and carotenoids (473.9 ppm). This method is facile and efficient for the extraction of carotenoprotein from other shrimp and crab wastes on a large scale.

6p vidanh27 08-12-2018 22 0   Download