Four SJSU graduate students studying biotechnology pitched their business idea, Environzyme Biosciences, at the 18th annual Silicon Valley Innovation Challenge. Four biotechnology graduate students at San José State University recently discovered a concerning problem: In the research labs where they were interns, the majority of single-use plastics were not being recycled because of contamination. So those students — Sushmita Sen,’22 MS Biotechnology; Paul Mack, ’22 MS Biotechnology; Tvisha Josyula, ’22 MS Biotechnology; and Vishaka Shah, ’22 MS Biotechnology — came up with a solution: Environzyme Biosciences, a business idea that earned them the top prize of $1,500 at SJSU’s 18th annual Silicon Valley Innovation Challenge (SVIC). They also received the…