The abilities of scavenging O2-and · OH of crude extract,the portion extracted by n-butanol and the aqueous portion remained of bamboo leaves were studied by chemiluminescence.The results showed that all of the t...The abilities of scavenging O2-and · OH of crude extract,the portion extracted by n-butanol and the aqueous portion remained of bamboo leaves were studied by chemiluminescence.The results showed that all of the three extracts had strong antioxidant activity.Crude extract was higher than the portion extracted by n-butanol.The antioxidant effective positions of the aqueous portion were further tested qualitatively and found to be probably tannin and δ-OH-Lys etc.From the above,we can draw the following conclusion:the extract of bamboo leaves was a complex and synergistic mixture.It was no effective on antioxidant activity to purify further.展开更多
The article studied the resonance light scattering of protein red alizarin with the simple fluorescence spectrophotometer first.In Britton Robinson butter of 4.10,the red alizarin combined with proteins by intermolecu...The article studied the resonance light scattering of protein red alizarin with the simple fluorescence spectrophotometer first.In Britton Robinson butter of 4.10,the red alizarin combined with proteins by intermolecular forces to form complexes,causing an enhance of resonance light scattering(RLS) at maximum wavelength of about 360nm.Based on the enhancement of resonance light scattering a novel method for the determination of proteins using red alizarin was developed.Though it affected by the limit of the filter of spectrophotometer the experiment used the wavelength of incident light doesn’t lie in the maximum wavelength,the method has better linear range within 0～10.0μg/ml,determination limits being 0.04μg/ml.The method had been used to determine total proteins in human serum samples and with accuracy and torelant to many foreign substance.展开更多
Tetrabenzoporphyrine (H 2TBP) of plane structure and its Co 2+ ,Ni 2+ ,Zn 2+ complexes have been synthesized.The strueture of these complexes were studies by visible spectrum.IR and elemental analysis.
文摘The abilities of scavenging O2-and · OH of crude extract,the portion extracted by n-butanol and the aqueous portion remained of bamboo leaves were studied by chemiluminescence.The results showed that all of the three extracts had strong antioxidant activity.Crude extract was higher than the portion extracted by n-butanol.The antioxidant effective positions of the aqueous portion were further tested qualitatively and found to be probably tannin and δ-OH-Lys etc.From the above,we can draw the following conclusion:the extract of bamboo leaves was a complex and synergistic mixture.It was no effective on antioxidant activity to purify further.
文摘The article studied the resonance light scattering of protein red alizarin with the simple fluorescence spectrophotometer first.In Britton Robinson butter of 4.10,the red alizarin combined with proteins by intermolecular forces to form complexes,causing an enhance of resonance light scattering(RLS) at maximum wavelength of about 360nm.Based on the enhancement of resonance light scattering a novel method for the determination of proteins using red alizarin was developed.Though it affected by the limit of the filter of spectrophotometer the experiment used the wavelength of incident light doesn’t lie in the maximum wavelength,the method has better linear range within 0～10.0μg/ml,determination limits being 0.04μg/ml.The method had been used to determine total proteins in human serum samples and with accuracy and torelant to many foreign substance.
文摘Tetrabenzoporphyrine (H 2TBP) of plane structure and its Co 2+ ,Ni 2+ ,Zn 2+ complexes have been synthesized.The strueture of these complexes were studies by visible spectrum.IR and elemental analysis.
