Burcon Files Additional Patent - Improves Products

VANCOUVER, Jun 21, 2004 (Canada NewsWire via COMTEX) -- Burcon NutraScience Corporation (TSX-V: BU) announced today that, it has filed both a regular US patent application and a Patent Cooperation Treaty application to protect a novel process for making canola protein isolates with minimal flavour and colour.

The present invention incorporates process changes that enable the production of Puratein(R) and Supertein(TM) with significantly reduced levels of flavour and colour. Food processors desire proteins that will not impart off-colours or excessive flavours to their products. Therefore, these new and improved proteins are expected to allow for the use of Puratein(R) and Supertein(TM) in more applications and in products with more delicate flavours.

"This is the fourth new patent filing that we have made in 2004," stated Johann F. Tergesen, Burcon's President & COO. "This brings the total to seventeen patent filings that we have made since October 1999, fourteen of which relate directly to the production, use and composition of Puratein(R) and Supertein(TM)."

During the past year, Burcon's team in Winnipeg has focused on research aimed at improving Burcon's core technology of canola protein extraction and purification. In addition to the invention announced above, Burcon's scientists have developed an innovative alternative process of producing canola proteins which provides a novel split of some of the naturally occurring protein sub-components found in canola. In contrast, but equally promising, another filing was made to protect an innovative method of producing a less pure but more economical protein isolate which could have significant commercial application in the production of aquaculture feed, animal feed or pet food. Lastly, Burcon filed a patent application over a process to produce sodium-free versions of Puratein(R) and Supertein(TM) which may be valued by food processors who wish to produce sodium reduced products.

Looking forward, Burcon's research efforts will continue to target the most efficient process to produce the highest possible quality of canola proteins.

About Burcon NutraScience

Burcon is a research and development company developing a portfolio of composition, application and process patents around its plant protein extraction and purification technology. The goal of Burcon's research is to develop its patented process to utilize inexpensive oilseed meals for the production of purified plant proteins that exhibit valuable nutritional, functional or nutraceutical profiles. Burcon, in conjunction with Archer Daniels Midland, is currently focusing its efforts on developing the world's first commercial canola proteins, Puratein(R) and Supertein(TM). Canola, recognized for its nutritional qualities, is the second-largest oilseed crop in the world after soybeans. Burcon's goal is to develop Puratein and Supertein to participate with soy, dairy and egg proteins in the expanding multi-billion-dollar protein ingredient market, with potential uses in prepared foods, nutritional supplements and personal care products.

The TSX Venture Exchange has not reviewed and does not accept responsibility for the adequacy of the content of the information contained herein. This press release contains forward-looking statements that involve risks and uncertainties. These forward-looking statements relate to, among other things, plans and timing for the introduction or enhancement of our products, statements about future market conditions, supply and demand conditions, and other expectations, intentions and plans contained in this press release that are not historical fact. Our expectations regarding the prospect for future success depend upon our ability to develop and sell products, which we do not produce today and cannot be sold without further research and development. When used in this press release, the words "goal,""intend," "believes" and "potential" and similar expressions, generally identify forward-looking statements. These statements reflect our current expectations. They are subject to a number of risks and uncertainties. In light of the many risks and uncertainties surrounding the development of a source of protein from canola meal, you should understand that we cannot assure you that the forward looking statements contained in this press release will be realized.

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