7Shukla R, Cheryan M. Zein: The industrial protein from corn [J]. Industrial Crops and Products, 2001,13(3): 171-192.
8Lee D H,Zo Y Z,Kim S J. Nonradioactive methods to study genetic profiles of natural bacterial communities by PCR- single-strand- conformation polymorphlsm [J]. Applied and Environmental Microbiology, 1996,62 : 3112-3120.
9Simpson J M, McCracken V J, Gaskins H R, Mackie R I. Application of denaturant gradient gel electrophoresis for the analysis of the porcine gastrointestinal microbiota[J]. Journal of Microbiology Methods, 1999,36 : 167-179.
10Gibson G R, Roberfroid M B. Dietary manipulation of the human colonic microbiota, introd-uceing the concept of prebiotics[J]. Journal of Nutrition, 1995,125 : 1401-1412.
