High molecular weight pullulan and method for its production
US6387666B1 · kind B1 · utility
6Cited by
3References
14Claims
0Family size
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Key dates
| Filing date | Nov 30, 1993 |
| Grant date | May 14, 2002 |
| Priority date | — |
| Expiry date | Nov 30, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S435/911
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
A method for obtaining a substantially biologically pure culture strain of Aureobasidium pullulans from a wild type strain by enriching the collected strain for organisms which grow as fungal yeastlike cells, growing colonies from isolated yeastlike cells and selecting those yeastlike cells which exhibit reduced pigmentation. Biologically pure culture strains obtained by the invention as well as methods for producing pullulan having decreased pigmentation and/or increased molecular weight are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.