A two-step biotechnological process was developed using Bacillus licheniformis S6 to provide a simple and economical procedure which significantly improved feather meal nutrition value. Compared with IFM （initial fea...A two-step biotechnological process was developed using Bacillus licheniformis S6 to provide a simple and economical procedure which significantly improved feather meal nutrition value. Compared with IFM （initial feather meal） and CFM （commercial feather meal）, SFEFM （feather meal gained by solid fermentation and enzymolysis with continuous agitation） had a significant improvement （P〈0.05） in vitro digestibility, contents of oligopeptides and soluble protein released in digestive juice by pepsin- pancreatin digestion procedure, furthermore, some deficient essential amino acids in feather protein （histidine, methionine, lysine） were enhanced. Comapared with CFM, the oligopeptides released into digestive juice of ISFM （feather meal obtained by the biotechnological process described in the paper with intermittent shaking） was significantly enhanced （P〈O.05）, and its in vitro digestibility was statistically （P〉0.05） equivalent to CFM. The summary of the finding to IFM treatment and possible means of further improvements were also listed.展开更多
AIM: To investigate the chemical constituents and their biological activities of the aerial parts of Euphorbia tibetica. METHOD: Compounds were isolated and purified by various chromatographic methods, and their struc...AIM: To investigate the chemical constituents and their biological activities of the aerial parts of Euphorbia tibetica. METHOD: Compounds were isolated and purified by various chromatographic methods, and their structures were elucidated through the use of extensive spectroscopic techniques including 2D-NMR, the structures of compounds 5 and 6 were confirmed by single-crystal X-ray crystallography. Bioactivities of all the isolated compounds were evaluated by the MTT method on A549 and anti-angiogenesis assay. RESULTS: One new compound, methyl 4-epi-shikimate-3-O-gallate(1), together with twenty-three known constituents(2–24) were isolated from the aerial parts of E. tibetica. CONCLUSION: Compound 1 is new, and the other compounds were isolated from this plant for the first time. Compounds 5–7, 9, 11, 17, 18 and 20 exhibited inhibitory effects on the growth of human lung cancer cell A549 and compounds 5, 7, 12, 13, 17 and 19 showed anti-angiogenic effects in a zebrafish model.展开更多
文摘A two-step biotechnological process was developed using Bacillus licheniformis S6 to provide a simple and economical procedure which significantly improved feather meal nutrition value. Compared with IFM （initial feather meal） and CFM （commercial feather meal）, SFEFM （feather meal gained by solid fermentation and enzymolysis with continuous agitation） had a significant improvement （P〈0.05） in vitro digestibility, contents of oligopeptides and soluble protein released in digestive juice by pepsin- pancreatin digestion procedure, furthermore, some deficient essential amino acids in feather protein （histidine, methionine, lysine） were enhanced. Comapared with CFM, the oligopeptides released into digestive juice of ISFM （feather meal obtained by the biotechnological process described in the paper with intermittent shaking） was significantly enhanced （P〈O.05）, and its in vitro digestibility was statistically （P〉0.05） equivalent to CFM. The summary of the finding to IFM treatment and possible means of further improvements were also listed.
基金supported by National Natural Science Foundation of China(No.31300293)General Project of Applied Foundation Research,Yunnan Province(No.2013FB067)+1 种基金Basic Research Project of Ministry of Science and Technology of China(No.2012FY110300)Major State Basic Research Development Program(No.2010CB951704)
文摘AIM: To investigate the chemical constituents and their biological activities of the aerial parts of Euphorbia tibetica. METHOD: Compounds were isolated and purified by various chromatographic methods, and their structures were elucidated through the use of extensive spectroscopic techniques including 2D-NMR, the structures of compounds 5 and 6 were confirmed by single-crystal X-ray crystallography. Bioactivities of all the isolated compounds were evaluated by the MTT method on A549 and anti-angiogenesis assay. RESULTS: One new compound, methyl 4-epi-shikimate-3-O-gallate(1), together with twenty-three known constituents(2–24) were isolated from the aerial parts of E. tibetica. CONCLUSION: Compound 1 is new, and the other compounds were isolated from this plant for the first time. Compounds 5–7, 9, 11, 17, 18 and 20 exhibited inhibitory effects on the growth of human lung cancer cell A549 and compounds 5, 7, 12, 13, 17 and 19 showed anti-angiogenic effects in a zebrafish model.
