0.0 2.5 5.0 7.5

 time (min)


10.0 12.5


Figure 6-1. Heat-induced degradation of UDPGA (boiling in 0.25 M H2PO4 buffer)

 my
 UD PGA









 UMP -UDP
 10 UM?







 000 5:00 10:00 15:00 20:00 25:00 30:00



Figure 6-2. Decomposition of UDPGA to UDP and UMP after boiling in 0.25 M H2PO4
 buffer for 10 minutes