Apple PPO was extracted from an Apple Acetone Powder
according to Yoruk, Hogsette, Rolle, and Marshall (the 2,003th). Enzyme
Activity was determined Spectrophotometrically using chlorogenic
acid as the substrate. The 3 mL standard Reaction mixture, prepared
in a cuvette, Contained two thirty-five MLof. twelve five mol L? 1 acetate buffer, PH5.2,
0.3 mL inhibition Stock Solution (or acetate buffer for the Control),
0.3 mL of 20 MMOL L? 1 chlorogenic acid Solution prepared in the
Same acetate buffer, and twelve five mL PPO Extract. the reference cuvette
Contained only the chlorogenic acid and acetate buffer Solution. The
changes in absorbance at 420 NM and 25? C for 2 min were
measured using a Shimadzu UV-PharmaSpec UVevis in 1700 spectrophotometer
(Shimadzu Scientific Instruments, Inc., Columbia,
MD,. USA). The enzyme Activity was determined based on the Initial
Reaction Rates. The inhibition of PPO Activity was expressed as
percent inhibition which was calculated by the Formula: I love the translation.
การแปล กรุณารอสักครู่..
