Utilisation of food waste for lactic acid production

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Food waste is a growing problem related with increasing of the population. Around 1.3 billion tonnes of food produced for the human consumption in the world is every year getting lost or wasted. Food waste is considered a non-valued material. Food waste are for example vegetable and fruit peel, nut shells and coffee residuals. Saccharides and other nutrients contained in food waste are suitable for fermentation. Microorganisms could convert it into profitable products such as biofuels, enzymes, useful chemicals or monomers for production of bioplastics. Conversion of food waste into the other valuable products promise different options. One of these valuable products could be lactic acid. It is organic acid usually used in food and pharmaceutical industries. It has also great potential as monomer for producing the biodegradable plastics. Polylactic acid (PLA) is suitable alternative to traditional plastics. Its large-scale application is limited by high price of lactic acid production. High price of production could be reduced by optimization of fermentation and searching of cheaper raw materials. The aim of this study was to use different food wastes as raw material for lactic acid fermentation.

Lactic acid, food waste, fermentation, lactic acid bacteria

HUDEČKOVÁ, H.; BABÁK, L.; MÁROVÁ, I.

13. 6. 2017

978-80-7080-989-1

BioTech 2017

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