ZAKRIA PHARMACY

ENZYMES OBTAINED FROM PLANT SOURCE (PHYTO-ENZYMES) } DEFINITIONS } Enzymes are organic catalysts produced by living organisms. } Enzymes are important group of bio-molecules synthesized by the living } cells. They are catalysts of biological systems, colloidal, thermo-labile and } protein in nature. } Catalysts } A catalyst is an agent, which in minute amount increases the velocity of } reaction without appearing in the final product of the reaction. } Substrates } Substances on which enzymes act to convert them into products are called substrates. } DIFFERENCE BETWEEN ENZYMES & CATALYST } All the enzymes are organic } substances } • Enzymes mostly destroyed during } the reaction } • Enzymes are more specific in } Nature } • Enzymes are very complex in } Nature } • Speed of the enzyme reaction } does not depend on the } Concentration. } All the catalysts are inorganic } substances } • Catalysts are not destroyed in the } chemical reaction } • Cat...

 against pathogenic micro-organism.  Biologics can be classified into two general categories  1. Antigens  2. Antibodies ANTIGEN: An antigen is the material that provokes the immune response and it can be defined under three categories.  Biologically  Chemically  Physically a. Biologically definition of Antigens: An antigen is the substance that when introduced into the tissue of man or other vertebrates,causes the formation of antibodies. These antibodies then react specifically with the antigen that stimulated their production.   Properties of an antigen: Immunogenicity  Specificity  ANTIGENIC DETERMINATES(EPITOPES)   Small cemical sites on the antigen molecules called the antigenic determinates,the antibody combines with one or more these sites. b. Chemically definition of antigen:   Chemically antigens are Proteins, However some higher molecular weight polysacchar...