Aqueous solutions of alkaline glutaraldehyde (buffered at pH 8.5) inactivated a standard suspension of Mycobacterium tuberculosis H37Rv faster than the corresponding acid (pH 3.7 preparation. Quantitative differences in the rate of inactivation of eight other species of Mycobacterium were determined using a 1% solution of alkaline glutaraldehyde and inactivation of residual glutaraldehyde with ...

introduction safflower (carthamus tinctorius l.) is an important oilseed crop grown throughout the semiarid regions in many parts of the world. it has been cultivated for its oil and flowers and as a meal. alkaline stress is caused by alkaline salts such as na2co3 or nahco3 in the soil. alkaline stress, is widespread environmental constraint affecting crop productivity ,which can inhibit absorp...

To clarify the formation process of acid metarhodopsin in the cephalopod rhodopsin cycle, changes in the difference spectrum of squid (Todarodes pacificus) rhodopsin in acid (pH 5.7, or pH 6.1) and alkaline (pH 10.2) solutions were studied at various temperatures by applying the flash photolytic technique. An intermediate with an absorption maximum at about 475 nm was transformed from lumirhodo...