  The paper deals with Hawking radiation related to non-static spherically
symmetric black hole. Quantum corrections are incorporated using
Hamilton-Jacobi method beyond semi-classical approximation. It is found that
different order correction terms satisfy identical differential equation as the
semiclassical action and are solved by a typical technique. It has been shown
that with proper choice of the proportionality factors, one loop back reaction
effect in the space time can be obtained. Finally, using the law of black hole
mechanics, a general modified form of the black hole entropy is obtained
considering modified Hawking temperature.
