Agricultural by-products and oyster shell as alternative nutrient sources for microbial sealing of early age cracks in mortar.

ABSTRACT: Bio-concrete using bacterially produced calcium carbonate can repair microcracks but is still relatively expensive due to the addition of bacteria, nutrients, and calcium sources. Agricultural by-products and oyster shells were used to produce economical bio-concrete. Sesame meal was the optimal agricultural by-product for low-cost spore production of the alkaliphilic Bacillus miscanthi strain AK13. Transcriptomic dataset was utilized to compare the gene expressions of AK13 strain under neutral and alkaline conditions, which suggested that NaCl and riboflavin could be chosen as growth-promoting factors at alkaline pH. The optimal levels of sesame meal, NaCl, and riboflavin were induced with the central composite design to create an economical medium, in which AK13 strain formed more spores

SUBMITTER: Hong M 

PROVIDER: S-EPMC7788133 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature