Yeast cultures are distributed to academic and industrial researchers around the globe for diverse study topics such as ecology, yeast taxonomy and classification, genomics, microbiology, regulation of enzyme expression, conversion of waste biomass to ethanol, mechanism of carotenoid synthesis, biological control of fungal plant pathogens, spoilage yeast biofilms formed during beverage production, and production of mycotoxins, to provide reference strains for microbiology teaching labs and research starter cultures for beer, bread and wine, and as sources for industrial enzymes, pigments, and nutraceuticals. Distribution is supported by user fees charged  to cover costs of sample preparation, shipping, and handling.

1. Cultures
Users of the collection are charged the following fees to cover the cost of sample preparation, shipping and handling:

Commercial researchers $150.00 per strain
Institutional researchers $100.00 per strain
Academic researchers $100.00 per strain

An invoice will be sent to your billing contact when the strains are shipped. Payment must be by check or electronic transfer, within 30 days of receipt of the strains. Contact collection personnel for details.

Minimum order $150
Extra shipping fee for overseas orders: $50

2. Identification service
We offer strain identification service utilizing ribosomal (D1/D2) sequencing. Cost for all clients is $100.00 per sample for the standard turn-around time (up to three weeks), or $150.00 per strain for identification in one week. Strain MUST be provided as a pure culture, and must be a yeast. This service includes PCR amplification, sequencing in one direction (both directions if necessary), and BLAST comparison to all published yeast species, as well as our extensive database of unpublished yeast species.

For more information, please visit our terms of use page. For additional questions, visit the contact page.


Phaff Yeast Culture Collection
Kyria Boundy-Mills, Curator | tel: 1(530) 754-5575 | fax: 1(530) 752-4759 | email: