Purification of trypsin by affinity precipitation and combining with aqueous two-phase extraction Jyh-Ping ChenFong-Long Jang OriginalPaper Pages: 461 - 466
Improving the continuous production of lipolyzed butteroil with pregastric esterases immobilized in a hollow fiber reactor Hugo S. GarciaCharles G. Hill Jr. OriginalPaper Pages: 467 - 470
Immobilization of tyrosinase for use in nonaqueous media: Enzyme deactivation phenomena Stephen H. DayRaymond L. Legge OriginalPaper Pages: 471 - 476
Release of chloramphenicol acetyl transferase from recombinant Escherichia coli by sonication and the French press Lene JorgensenBrian K. O'NeillAnton P. J. Middelberg OriginalPaper Pages: 477 - 480
Determination of intraparticle immobilized enzyme distribution in porous support by confocal scanning microscopy M. C. PintoP. Macías OriginalPaper Pages: 481 - 486
Whey clarification by a soluble polycationic agent M. GrasselliL. E. DíazO. Cascone OriginalPaper Pages: 487 - 490
Improved molecular weight analysis of streptococcal hyaluronic acid by size exclusion chromatography David C. ArmstrongMichael R. Johns OriginalPaper Pages: 491 - 496
A plate assay for the detection of organophosphonate mineralization by environmental bacteria, and its modification as an activity stain for identification of the carbon — phosphorus bond cleavage enzyme phosphonoacetate hydrolase John W. McGrathJohn P. Quinn OriginalPaper Pages: 497 - 502
Simultaneous quantification of polymer and salt in polyethylene glycol / phosphate aqueous two-phase systems by HPLC M. J. SebastiãoJ. M. S. CabralM. R. Aires-Barros OriginalPaper Pages: 503 - 508
Transformation of the astaxanthin-producing yeast Phaffia rhodozyma J. L. AdrioM. Veiga OriginalPaper Pages: 509 - 512
Control of mites during isolation of yeasts from natural habitats J. F. T. SpencerDorothy M. SpencerE. Fengler OriginalPaper Pages: 519 - 520
A simple and modified manometric method for measuring oxygen uptake rate of plant cells in flask cultures Zhi-You WenJian-Jiang Zhong OriginalPaper Pages: 521 - 526
Procedures for scaling up the recombinant 18kDa-hsp lepra protein production Maria Helena B. da CostaCelina M. P. M. UedaIsaías Raw OriginalPaper Pages: 527 - 532
Reversible immobilization of chemically modified pullulanase Teresita DíazUlf St»hlJan Carlsson OriginalPaper Pages: 533 - 538
Selective release of superoxide dismutase from Saccharomyces cerevisiae with isopropanol Tan TianweiYang YuanzhongMo Xirong OriginalPaper Pages: 539 - 542