Valorization and potential of condensed corn distillers solubles fractions from selective milling technology

The bioprospects of condensed corn distillers solubles (CCDS) from novel selective milling technology was investigated using a modified lab-scale separation. The valued-added products such as mineral fraction (MF), protein fraction (PF), and solvent-extracted fraction (SEF) were obtained. Including characterization of fractions, the enzymatic hydrolysis of PF using trypsin was done to examine the potential of bioactives. The yields of PF, MF, and SEF were 25.43, 8.59, and 65.09%, respectively from CCDS. Glu, Leu, and Pro were the most abundant amino acids (AAs) of PF, thereby expecting greater possibility of bioactives. The significant presence of potassium, phosphorous in MF, and extractable 2,3-butanediol, glycerol in SEF shows promising future applications. Besides, the protein hydrolysate from PF had VFVDHPLFLER, NPESFLSSFSK, ILHTISVPGEFQFFFGPGGR, TGGLGDVLGGLPPAMAANGHR, and FAFSDYPELNLPER as the identified peptides with antioxidant characteristics and inhibition against ACE, DPP-III, and DPP-IV. The bioactivities forecasted by BIOPAP software were verified with larger contents of hydrophobic, aromatic, and other AAs in PF. The porous and amorphous nature of MF and PF as found by microstructural study revealed potentiality of these products for nutritional purposes for feed industries. The prospective of CCDS can be anticipated as per the outcomes and further optimization for value-chain can be established.

Automated summary

The bioprospects of condensed corn distillers solubles (CCDS) from novel selective milling technology were investigated in this study. Valued-added products such as mineral fraction (MF), protein fraction (PF), and solvent-extracted fraction (SEF) were obtained. The study found that CCDS has potential for nutritional purposes in the feed industry, with PF showing high amino acid content and potential bioactivity. Moreover, protein hydrolysates from PF exhibited antioxidant characteristics and inhibition against certain enzymes.