5Yamane H, Sasai K, Takano M, et al. Poly(D-lactie acid) as a rheologieal modifier of poly ( L-lactic acid): Shear and biaxial extension alflow behavior[J]. Journal of Rheology,2004,48(3):599-609.
6Richard A Gross, Bhanu Kalra. Biodegradable Polymers for the Environment[J]. Green Chemistly,2002,297:803-807.
7Aljundia I H, Belovich J M, Talub O. Adsorption of lactic acid from fermentation broth and aqueous solutions on Zeolite molecular sieves[J]. Chemical Engineering Science,2005,60(18) :5004-5009.
8Vijayakumar J, Aravindan R, Viruthagiri T. Recent trends in the production, purification and application of lactic acid[J]. Chemical and Biochemical Engineering Quarterly,2008,22(2):245-264.
9Hofvendahl K, Hahna Hagerdal B. Factors affecting the fermentative lactic acid production from renewable resources[J]. Enzyme and Microbial Technology,2000,26(2- 4):87-107.
10Datsenko K A, Wanner B L. One-step inactivation of chromosomal genes in Escherichia coli K-12 using PCR products[J]. Proceedings of the National Academy of Science of the United States of America,2000,97(12):6640- 6645.
