||||||||||Lacfid (lactic acid) / Serum Institute of India Journal: Prebiotic activity of paramylon isolated from heterotrophically grown Euglena gracilis. (Pubmed Central) - Sep 30, 2021 The prebiotic activity of E. gracilis cell extract and isolated paramylon was studied. E. gracilis cell extract as well as isolated paramylon led to cell number enhancement of Lacfid (Lactobacillus) strain exhibiting the prebiotic activities.