Valorisation of bakery waste for succinic acid production

Valorisation of food waste in biotechnological processes

“…Similar processes have been previously investigated for the utilisation of wheat and rapeseed meal for the recovery of glucose, free amino nitrogen and phosphate [28][29][30]. It has been shown that the secretion of hydrolytic enzymes by A. awamori and A. oryzae is sufficient to degrade most of the starch, proteins and polyphosphates in food waste [14,15,18].…”

“…The methods listed in Table 3 may also be suitable for a biodiesel production from food waste, but variable lipid contents in food waste may make it economically unfavourable [5,14,15]. However, remaining solids obtained after hydrolysis of food waste by Aspergillus awamori and Aspergillus oryzae were found to be rich in lipids (~80%, w/w) and it is currently under investigation as feedstock for production of biodiesel in our laboratory.…”

“…In order to reduce process costs, degradation of food wastes was performed in situ by Aspergillus awamori and Aspergillus oryzae, which are well-known fungal secretors of glucoamylase, protease and phosphatase [14,15,18,27]. Similar processes have been previously investigated for the utilisation of wheat and rapeseed meal for the recovery of glucose, free amino nitrogen and phosphate [28][29][30].…”

“…Another option is the recovery of sugar monomers, glycerol, short and long fatty acids, amino acids and phosphate from food waste, which are wanted nutrients in many biotechnological processes for cultivation of bacteria, fungi, algae, and production of primary and secondary metabolites [14][15][16][17][18][19][20].…”

“…A composition of 30-60% starch, 5-10% proteins and 10-40% (w/w) lipids makes food waste to a promising raw material [5,14,15]. Recovery of nutrients from food waste in the form of carbon, nitrogen and phosphorous compounds can be performed by chemical and biological/enzymatic methods after solubilisation of the waste matter [21][22][23][24][25].…”