The absorption spectra of visual purple solutions extracted by various means were measured with a sensitive photoelectric spectrophotometer and compared with the classical visual purple absorption spectrum. Hardening the retinas in alum before extraction yielded visual purple solutions of much higher light transmission in the blue and violet, probably because of the removal of light-dispersing ...

A new reagent for the oxidation of hydrazones to diazo compounds is described. N-Iodo p-toluenesulfonamide (TsNIK, iodamine-T) allows the preparation of α-diazoesters, α-diazoamides, α-diazoketones and α-diazophosphonates in good yield and in high purity after a simple extractive work-up. α-Diazoesters were also obtained in high yield from the corresponding ketones through a one-pot process of ...

Rhizopus stolonifer is a fungus and one of the most common species of the genus Rhizopus. The organism has been a very important microbe used in the field of industrial microbiology. It has been used in the production of many hydrolytic and extracellular enzymes among which is the α-amylase. This enzyme has found various uses in the industry. Fruit juices are important sources of nutrients and ...

ABSTRACT Purpose The application of hyaluronidase in ophthalmology dates back 60 years, when it was first included in retrobulbar blocks. Now it is used routinely in retrobulbar, peribulbar, and sub-Tenon’s blocks. Until recently, the only sources of hyaluronidase were animal derived, either pharmaceutically manufactured or compounded. Animal-derived products have been associated with low purit...

Production and purification of human growth hormone using a simple method was studied in two recombinantEscherichia coli, D7-5 and C27-2 strains. The r-hGH was expressed in the form of inclusion body in a batchfermentation process and purified to 99% purity using a procedure based on acid precipitation of the hostderived proteins and other impurities. The effect of the pH and ...

The study was to investigate the protective effect of total flavonoid from Ba lotus leaf (BLLF) on reserpine (10 mg/kg)-induced gastric ulcer in KM (Kunming) mice. BLLF was given by gavage in mice, the serum and gastric tissue levels of MOT, SP, VIP, SS, SOD (T-SOD), GSH-Px and MDA were tested by experiment kits, the cytokine levels of TNF-α, IFN-γ, IL-6, and IL-12 were also checked by kits. Th...

patients and methods in a quasi-experiment trial, 40 type 2 diabetic patients were asked to consume 50 g of cpj daily for 4 weeks. anthropometric indices, dietary intake, blood pressure measurements, and fasting blood samples were conducted at baseline and 4 weeks after the intervention. results the intake of cpj produced a significant increase in both total and high-density lipoprotein cholest...