Mechanism of the increase in the photoelectric sensitivity in systems of organic acceptors with conjugated polymers

Conclusions An increase in the photoconductivity was established in systems containing polymers with conjugated bonds and organic acceptors. The possible causes of this phenomenon are discussed.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 5, pp. 1069–1074, May, 1972.     

A study of the products of the hydrolysis of the xylan ofMelilotus albus by endo-1 4-β-xylanase

The enzymatic hydrolysis of a 4-0-methylglucuronoxylan of white sweetclover (Melilotus albus) by a highly purified homogeneous endo-1, 4-β-xylanase fromAspergillus niger 14 has shown that the enzyme hydrolyzes 97% of the polysaccharide in 72 h. Acidic and neutral oligosaccharides were found in the hydrolysate after the action of the enzyme. An investigation of the hexauronic acid isolated has shown that the glucuronic acid is attached to the nonreducing end of the xylooligosaccharide, which demonstrates the specific action of the enzyme on the polysaccharide.