Colin S Ennis

Title: Colin S Ennis: Innovator in Hop Extraction Technologies

Introduction

Colin S Ennis is a notable inventor based in Chislehurst, GB, recognized for his contributions to the brewing industry through innovative methods of hop extraction. With a total of 3 patents to his name, Ennis has developed techniques that enhance the quality and purity of hop extracts used in beer production.

Latest Patents

Ennis's latest patents include a method for the production of an iso-.alpha.-acid preparation from hops. This method involves extracting a high-quality primary extract containing .alpha.-acids from hops using liquid CO₂ and isomerizing the .alpha.-acids in the primary extract. The extraction process is performed at a sub-critical temperature of not less than -5°C, resulting in a primary extract that contains .alpha.-acids, .beta.-acids, hop oil, and minimal amounts of other organic compounds. The isomerization is conducted by boiling an alkaline solution of the extract, which can also facilitate the removal of hop oil. Additionally, the .beta.-acids can be eliminated by acidifying the iso-.alpha.-acid solution and filtering off the precipitated .beta.-acids. This preparation is noted for its outstanding purity and is particularly beneficial when added to bright beer after final filtration to provide bitterness.

Another significant patent by Ennis describes a method of preparing a hop extract by passing liquid carbon dioxide at temperatures ranging from -5°C to +15°C through a column of hop material. This method yields a primary extract of much higher purity compared to commercially available solvent extracts, making it a valuable advancement in the field.

Career Highlights

Colin S Ennis has worked with several prominent organizations in the brewing sector, including Brewing Patents Limited and The Brewing Research Foundation. His work has significantly impacted the methods used in hop extraction, leading to improvements in the quality of beer.

Collaborations

Throughout his career, Ennis has collaborated with notable individuals such as Derek R Laws and Nigel A Bath, contributing to advancements in brewing technologies.

Conclusion

Colin S Ennis stands out as an innovative inventor in the brewing industry, with his patented methods for hop extraction enhancing the quality of beer production. His contributions continue to influence brewing practices and improve the overall quality of hop-derived products.