... mng bỏn th m ch n l c nh: PE (Polyetylen), LDPE (Low Density Polyetylen) , HDPE (High Density Polyetylen), PP (Polypropylen), PVC (Polyvinylclorua), ORT (Oxygen Rate Tranmission) B o qu n qu b ... chớnh l b nh thỏn th (Colletotrichum gleosporioides) v th i cu ng qu (Diplodia sp .) Tuy nhiờn, ch cú 8% s h x l thu c phũng tr n m b nh (Benomyl 50WP ủ c s d ng nhi u nh t v i li u l ng 2-5 gam /l t ... polygalacturonase l enzyme cú tỏc d ng lm phỏ v liờn k t - acid galacturonic, tham gia lm m m qu chớn Ngoi cũn cú m t s enzyme phỏ h y thnh t bo khỏc ủ c phỏt hi n qu chớn nh cellulases, pgalactosidase,...