Ratna Chatterjee

Title: Ratna Chatterjee: Inventor in Natural-Product Research.

Introduction

Ratna Chatterjee is an inventor associated with Kolkata, India, and the Council of Scientific and Industrial Research. Her patent work concerns isolating a biologically active compound from neem bark.

Latest Patents

Chatterjee is credited with 1 patent, titled “Process for the Isolation of an Active Principle from Azadirachta indica.” The invention describes a process for isolating a phenolic glycoside from an aqueous extract of neem bark. The compound is reported to inhibit gastric acid secretion and stress-induced gastric ulceration.

The process lyophilizes the aqueous extract, extracts the resulting powder with petroleum ether, and treats the insoluble residue with solvents of increasing polarity. The final residue is then processed using high-performance liquid chromatography with a reverse-phase column to isolate the active compound.

Career Highlights

Chatterjee’s patent reflects research into natural products and their potential biological applications. Her work connects neem-derived compounds with a method for isolating a substance investigated for effects on gastric secretion and ulceration.

Collaborations

Her listed coworkers include Uday Bandyopadhyay and Ranajit Kumar Bandyopadhyay. The patent is associated with the Council of Scientific and Industrial Research.

Conclusion

Ratna Chatterjee’s patent documents a method for isolating a phenolic glycoside from neem bark, highlighting her contribution to natural-product research and the investigation of compounds with potential gastric applications.