Efficient bioethanol production from pomegranate peels by newly isolated Kluyveromyces marxianus

ABSTRACT

The usage of pomegranate peel (PP) which is value added by-product was investigated in this current study for bioethanol production by Kluyveromyces marxianus. Some important parameters such as initial PP loading (50, 100, 150 g/L), effect of different nitrogen sources (yeast extract-peptone and (NH₄)₂SO₄), and mineral salts (K⁺, Mg²⁺, Ca²⁺, Zn²⁺) on bioethanol production of K. marxianus was examined. Bioethanol yield was increased up 18.03% when the nitrogen sources and mineral salts were supplemented to the 100 g/L PP-containing medium. The highest ethanol concentration was obtained as 7.20 g/L when the theoretical ethanol yield was 83.1%. This work demonstrates that K. marxianus is a promising agent for bioethanol production from PP.

KEYWORDS:

• Kluyveromyces marxianus
• bioethanol
• pomegranate peel
• biofuel
• yeast

Additional information

Funding

This work supported by the Research Foundation of Ankara University. Project No: 17L0430007;Ankara Universitesi [17L0430007.].