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. 2020 Aug:310:123515.
doi: 10.1016/j.biortech.2020.123515. Epub 2020 May 11.

Valorization of food and kitchen waste: An integrated strategy adopted for the production of poly-3-hydroxybutyrate, bioethanol, pectinase and 2, 3-butanediol

Raveendran Sindhu  1 , Athulya Manju  2 , Pooja Mohan  2 , Rajendran Omana Rajesh  3 , Aravind Madhavan  4 , K B Arun  4 , Sulfath Hakkim Hazeena  3 , Anju Mohandas  2 , Swathi Ponnusamy Rajamani  2 , Anoop Puthiyamadam  2 , Parameswaran Binod  2 , R Reshmy  5
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Valorization of food and kitchen waste: An integrated strategy adopted for the production of poly-3-hydroxybutyrate, bioethanol, pectinase and 2, 3-butanediol

Raveendran Sindhu et al. Bioresour Technol. 2020 Aug.

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Abstract

The present investigation gives an insight on the potential of food and kitchen waste as a suitable feed stock for the production of biopolymer, biofuels, enzymes and chemicals. Media engineering improved poly-3-hydroxybutyrate (PHB) production from 0.91 g/L to 5.132 g/L. There is a five-fold increase in PHB production. The food and kitchen waste was also evaluated for the production of bioethanol, 2, 3 - butanediol, and pectinase. Saccharomyces cerevisiae produced 0.316 g of bioethanol, Bacillus sonorensis MPTD1 produced 2.47 (µM/mL)/min of pectinase and Enterobacter cloacae SG1 produced 3 g/L of 2, 3-butanediol with a productivity of 0.03 g/L/h using food and kitchen waste as carbon source. Targeting on multiple value added products will improve the overall process economics.

Keywords: Biopolymer; Consortium; Food waste; Media engineering; Poly-3-hydroxybutyrate.

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Conflict of interest statement

Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

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