Keiichi Majima

Title: Keiichi Majima: Innovator in Amylase Assay Technology

Introduction

Keiichi Majima is a notable inventor based in Tsuruga, Japan. He has made significant contributions to the field of biochemistry, particularly in the development of reagents for the assay of amylase isozyme activity. With a total of two patents to his name, his work has advanced the methods used in enzyme activity determination.

Latest Patents

Majima's latest patents include a reagent for the assay of amylase isozyme activity. This reagent contains 2-chloro-4-nitrophenyl 4-O-β-D-galactopyranosylmaltoside, an antibody that inhibits S-type or P-type amylase activity, and an amylase activator. The invention allows for accurate and easy assay of amylase isozyme activity using a low concentration activator and an antibody without the need for an adjuvant enzyme. Another significant patent is a reagent for determining α-amylase activity. This reagent comprises a maltooligosaccharide derivative that does not require adjuvant enzymes, ensuring stability and high sensitivity in determining α-amylase activity.

Career Highlights

Throughout his career, Keiichi Majima has worked with prominent companies such as Toyo Boseki Co., Ltd. and Ensuiko Sugar Refining Co., Ltd. His experience in these organizations has contributed to his expertise in enzyme assays and biochemistry.

Collaborations

Majima has collaborated with notable coworkers, including Sumio Kitahata and Nobuhiro Kuwahara. Their combined efforts have furthered advancements in the field of enzyme activity assays.

Conclusion

Keiichi Majima's innovative work in the development of reagents for amylase activity assays has made a significant impact in biochemistry. His patents reflect a commitment to improving the accuracy and efficiency of enzyme assays, showcasing his role as a key inventor in this field.