GenScript’s Bestzyme Completes 100-Ton Sweet Protein Line in China

GenScript’s Bestzyme has completed the construction of an automated production line for brazzein, a sweet protein, at its facility in China, with an annual capacity of over 100 tons of Mellia sweet protein once operational. The facility runs fermentation, purification, and freeze-drying as a single automated process, with plans to potentially double its capacity within two years. Mellia is marketed as a sweetener ingredient for food and beverage formulations, blending with stevia and monk fruit to match the taste of sucrose once the sugar and calories are removed.

Bestzyme is already supplying Mellia to a US sparkling water brand, with FDA confirmation of its GRAS status in April 2025. The company is pursuing regulatory approvals in other markets, with a market authorization application filed in China. Bestzyme anticipates a growing demand for sweet proteins globally and highlights its unique position as a supplier with R&D, production, and application support capabilities in the industry.