High efficient column chromatographic extraction of curcumin from curcuma longa

... rhizome of Curcuma longa L. High- efficient column chromatographic extraction (CCE) proce- dures were developed for the extraction of curcumin from turmeric. Turmeric powder was loaded into a column ... communication High- efficient column chromatographic extraction of curcumin from Curcuma longa Pei-Yin Zhan a , Xue-Hua Zeng a , He-Ming Zhang b, ⇑ , Hai-...

Ngày tải lên: 01/07/2014, 13:23

... Effect of microwave irradiation on pre-soaked rhizomes. () % Extraction of curcumin using ethanol from ethanol soaked curcuma powder, ( ) % extraction of curcumin using ethanol from water soaked curcuma ... characteristic of the turmeric rhizome, is due to presence of 3–5% of curcuminoids. The curcuminoids includes curcumin, demethoxycurcumin, bisdemethoxycurcumi...

Ngày tải lên: 01/07/2014, 13:23

Ngày tải lên: 16/12/2012, 15:24

... polymer extraction methods (steaming extraction, NaOH extraction, SDS extraction, and washing extraction) were compared to develop an effective extraction method for bioflocculants from activated ... effective extraction method for bioflocculants from activated sludge. Microbial polymers obtained from activated sludge by four different extraction methods (steaming, NaOH, S...

Ngày tải lên: 05/09/2013, 09:08

... average, each solvent extracted higher TMA concen- trations at the higher extraction temperature of 80 ◦ C within each solid loading than at the lower extraction temperatures of 25 or 50 ◦ C. Solid loading ... average 89.7% of the dry matter. Change in starch content ranged from 67 to 78.3% of the dry matter, leaving a residual starch content of at least 11.4% of the dry mat...

Ngày tải lên: 05/05/2014, 08:39

... work, extraction efficiency (%) for MAE is defined as follows. Relative extraction efficiency (%) = Percentage extraction of curcumin (w/w) obtained from MAE × 100 Percentage extraction of curcumin ... The effect of the interaction of modifier volume with microwave power on extraction efficiency of curcumin. (c) The effect of the interaction of modifier volume with g...

Ngày tải lên: 01/07/2014, 13:23

... kinetic parameters of wild-type CysM from E. coli are in general agreement with those of the homolog CysM(salmo) [18,19]. Of the active center mutants produced, the deletion of a methyl group ... near Fig. 1. Stereo ribbon plot of the high resolu- tion structure of the CysM dimer, including the molecular twofold axis (black), which is crystallographic. The position of the su...

Ngày tải lên: 07/03/2014, 05:20

... its coverage. The size of grammars means tree schemata according to the number of sentences as shown in Figure 9. The coverage of grammar is the number of occurrences of unknown tree schemata ... ex- tracted grammar has the advantage of the coher- ence of extracted grammars and the rapidity of its development. However, as it always depends on the Treebank which the extr...

Ngày tải lên: 23/03/2014, 18:20

... cues are calculated from fast Fourier transforms (FFTs) of speech signals in terms of total amplitude or energy distribution ED across low, middle and high frequency parts of the vocal range ... The objects concerned wilh the extraction of cues from spectra, segmentation, manner-class sequencing and display of constituent structure, repairing effects of lenition and...

Ngày tải lên: 31/03/2014, 04:20

... simplic- ity, we suppress them in the example below. 108 Effect of Utilizing Terminology on Extraction of Protein-Protein Interaction Information from Biomedical Literature Junko Hosaka  Judice L.Y. Koh  Akihiko ... to the left of the "activat*" phrase. • Extract the highest NP/NPL. 4 "ACK-2" 4 Preliminary Evaluation We applied our extraction rules to two s...

Ngày tải lên: 31/03/2014, 20:20