Pseudomonas spp.細菌發酵烏賊軟骨生產生物活性物質及其應用

Abstract

Pseudomonas aeruginosa K-187 and Pseudomonas sp. TKU015 can be used for fermentation of squid pen in production of bioactive materials. The culture condition for K-187 and TKU015 was composed of 1% squid pen powder (SPP) (w/v), 0.1 % K2HPO4 and 0.05 % MgSO4．7H2O, and incubated in 100 mL of liquid medium in shaking flasks at 37℃ and 30℃. For deproteinization tests, K-187 fermentation of squid pen powder showed protein removal of 68% after 4 days, and TKU015 could removed chitin and retained protein content in spp. The squid pen powder was treated with 0.1% commercial papain and bromelain as a comparison, the deproteinization rate in combinations of 1% Pseudomonas spp. culture supernatant and 0.1% bromelain was all 99% while the rate was 59% and 69% in 0.1% papin with Pseudomonas spp. only. The chitinase of K-187 and TKU015 combined with 0.1% bromelain can hydrolyze squid pen powder efficiently which may apply to the productions of peptides, amino acids and chitoligosaccharides by useful for biological applications. N-Acetylglucosamine (GlcNAc) to N-acetylchitopentose (GlcNAc)5 were also produced from the culture supernatant by using K-187 strain for four days fermentation with 0.1% bromelain. Besides, The fourth day culture supernatant of Pseudomonas spp. showed maximal activity of 4-6 fold growth enhancing effect on Brassica chinensis Linn weight.