AUTHOR=Pan-utai Wanida , Thitiprasert Sitanan , Pornpukdeewattana Soisuda 

TITLE=Arthrospira Cell Residues for Lactic Acid Fermentation as Bioproducts From Waste Utilization

JOURNAL=Frontiers in Energy Research

VOLUME=Volume 10 - 2022

YEAR=2022

URL=https://www.frontiersin.org/journals/energy-research/articles/10.3389/fenrg.2022.878597

DOI=10.3389/fenrg.2022.878597

ISSN=2296-598X

ABSTRACT=Arthrospira (Spirulina) platensis is a freshwater cyanobacterium that is commercially produced as a food source on a global scale and considered safe for human consumption. After C-phycocyanin (C-PC) extraction, the waste cell residue (WCR) is composed of nutrients with 30% protein content. Here, the potential of WCR as a nitrogen source for Bacillus coagulans cultivation and bio-products was evaluated. Nitrogen substitute from WCR at different conditions of 20 – 100 g L-1 was performed. B. coagulans cultivation was achieved with maximal viable cells at 7.6 – 9.5 log CFU mL-1. Increasing WCR gave decreasing lactate production. Highest lactate production at 27 g L-1 was achieved from WCR 20 g L-1, highlighting the potential use of A. platensis waste biomass residue as a nitrogen source for the growth of lactic acid bacteria and zero-waste biotechnology methodology. Renewable resources utilization is a crucial step toward the development of a sustainable industrial society.