Abstract
In Burkina Faso, deficiency of amino acids in protein is becoming a major healthy public problem. This study was purposed to optimize essentials amino acids in single cell protein (SCP) by supplementing different nitrogen sources during fermentation of mango waste with Candida utilis FJM12. Analytical methods were used to determine biomass yield, chemical composition and amino acids profile of SCP. The principal component analysis (PCA) method was performed to identify the nitrogen source which exhibited best rate of SCP. The maximum biomass yield (6.48±0.03 g/L) exhibited 9.65±0.36% (w/w) of ash, while using yeast extract. The proximate composition of SCP revealed 56.40±1.30, 13.25±0.11, 3.80±0.10, and 6.60±0.25% (w/w), respectively for crude protein, lipids, carbohydrates, and nucleic acid content. PCA showed a strong correlation between yeast extract and Ammonium sulphate and demonstrated their positive influence to increase the rate of SCP and essentials amino acids as compared to Food and Agriculture Organization (FAO) recommendation. These results demonstrated that C. utilis FJM12 could be suitable for essentials amino acids. Key words: Mango waste, nitrogen source, Candida utilis, single cell protein (SCP), amino acids.
Highlights
Most residues could be converted into high-value materials through bio-components
principal component analysis (PCA) showed a strong correlation between yeast extract and ammonium sulphate and demonstrated their positive influence to increase the rate of single cell protein (SCP) and essentials amino acids as compared to Food and Agriculture Organization (FAO) recommendation. These results demonstrated that C. utilis FJM12 could be suitable for essentials amino acids
This study focused on investigating the production of SCP and some different amino acids using mango waste supplemented with nitrogen sources through solid state fermentation
Summary
Most residues could be converted into high-value materials through bio-components. Food security problem concerns most of the developing countries (Tamrat, 2017). Mango residues coming from industrial area, market and site stockage can attain 50,000 tons per year in Burkina Faso (Somda et al, 2010, 2011a) Due to it important carbohydrates rate, mango waste can be a valuable fermentation substrate for both single cell protein (SCP) and essentials amino acids production using yeasts. The Solid-State Fermentation (SSF) is defined as a fermentation process, which involves solid matrix in the absence or near absence of free water (Singhania et al, 2009) It has many advantages, such as high product yield with little risk of bacterial contamination, extended stability of products, low wastewater generation and low production costs (Zhao et al, 2008; Barrios-Gonzalez, 2012). This study focused on investigating the production of SCP and some different amino acids using mango waste supplemented with nitrogen sources through solid state fermentation
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