1[9]POLITIS I. Environmental factors affecting plasmin activity in milk[J].J Dairy Sic, 1989, 72:1 713 - 1 718.
2[10]MANJI B, KAKUDA Y. Effect of storage temperature on age gelation of ultra-high temperature milk processed by direct and indirect heating system[J]. J Dairy Sci, 1986, 69:2 944-3 001.
3[11]KOHLMANN K L, NIELSEN S S. Effects of serine proteolytic enzymes(trypsin and plasmin), trypsin inhibitor, and plasmiuogen activator addition to ultra-high temperature processed milk[J]. J Dairy Sci, 1988,71:1 728-1 739.
4[12]KOHLMANN K L, NIELSEN S S. Effects of a low concentration of added serine proteolytic plasmin, trypsin inhibitor on ultra-high temperature processed milk[J]. J Dairy Sci, 1991, 74:1 151 - I 156.
5[13]POLITIS I. Enzyme assay for the combined determination of plasmin plus plasminogen in milk: revisited[J]. J Dairy Sci, 1993, 76:1 260 -1267.
6[1]SNOEREN T H M. Proteolysis during the storage of UHT-sterilized whole milk. 1. Experiments with milk heated by the direct system for 4 seconds at 142 ℃ [J]. Neth Milk Dairy J, 1979, 33:31 -39.
7[2]DE KONING P J. Age-thinning and gelation inconcentrated and concentrated UHT-sterilized skim milk[J]. Neth Milk Dairy J, 1985,39:71-87.
8[3]KOUGH B P. Influence of enzyme activity of bacteria and leucocytes in raw milk on age gelation after UHT processing[J]. J Food Prot,1984, 47:105 - 110.
9[4]KUMURA H. Autolysis of the proteinase from Pseudomonas fluorescens [J].J Dairy Sci, 1999, 82:2 078 -2 083.
10[5]SNOEREN T H M. Proteolysis during the storage of UHT-sterilized whole milk. 2. Experiments with milk heated by the indirect system for 4 seconds at 142 ℃ [J]. Neth, Milk Dairy J, 1981, 35:113 - 119.
