Global ingredient manufacturer Kemin Industries has acquired Littleton-based Archangel Inc., an antimicrobial producer for biofuel production. Archangel Inc., founded in 2015 by Allen Ziegler, develops advanced bacterial control solutions for the biofuels industry. Post-acquisition, Ziegler will join Kemin as a Principal Sales Manager for the Kemin Bio Solutions business unit. “This acquisition is a significant…