Influence of micelle formation on the adsorption capacity of a biosurfactant extracted from corn on dyed hair

Abstract

Human hair contains fatty acids (palmitic, palmitoleic, oleic and stearic acid) that prevent hair dryness and avoid lower hair density of the scalp that can be caused when hair is dyed. These acids are also present in the composition of the amphoteric biosurfactant obtained from corn steep liquor, an agro-industrial stream generated by the corn wet-milling industry. This biosurfactant has a molecular weight of 1542 Da, with a similar mass spectrum to that of Fengycin, a biosurfactant produced by Bacillus subtilis strains. Few studies exist in the literature on the interaction of hair and biosurfactants, nor are there studies on the influence of micelle formation on biosurfactant adsorption capacity. Moreover, this is supposedly the first work in which a biosurfactant is applied to dyed hair. Different concentrations of biosurfactant were applied to dyed hair between 20–50 °C during 2–30 min of treatment. Theoretical models were obtained, which allowed the prediction of the amount of biosurfactant that can be entrapped by dyed hair. A maximum capacity of 10 549 µg g-1 was achieved at 295 mg L-1 of biosurfactant, thus it could be observed that dyed hair mainly adsorbed the biosurfactant above its critical micellar concentration, at which point the biosurfactant is in micellar form. Furthermore, this treatment maintains the dyed hair structure in a good state.Peer ReviewedPostprint (published version

Preservative and Irritant Capacity of Biosurfactants From Different Sources: A Comparative Study

“…14 , where it was observed that biosurfactants produced by lactic bacteria, in controlled fermentations, gave CMC values equal or higher than 1.5 g/L 15,16 . Moreover, the CMC determined for the biosurfactant extract obtained from corn stream is in concordance with the CMC previous published by Rincón-Fontán et al 31,32 . It is noticed that the CMC value of biosurfactant from CSL was lightly higher than other biosurfactants produced by microorganisms such as Bacillus subtilis, Rhodococcus erythropolis or Bacillus flexus, that gave CMC values of 0.02 g/L, 0.03 g/L and 0.05 g/L, respectively [33][34][35] .…”

Isolation and characterization of a microorganism that produces biosurfactants in corn steep water

“…Additionally, Fourier-transform infrared spectroscopy (FTIR) was used to determine the possible similarities of the biosurfactants extracted from the isolated Bacillus strain, in comparison with a commercial biosurfactant, fengycin, which is a lipopeptide biosurfactant produced by B.subtilis that showed in previous works a higher similarity with the biosurfactant extracted from CSW (Rincón-Fontán et al, 2017). In this case, it can be observed that the FTIR of fengycin gave a similar response than the biosurfactants extracts obtained from the isolated Bacillus strain ( Figure 5), with a strong band between 3400 and 3200 cm −1 as the result of N-H and O-H stretching indicating the amine and hydroxyl groups.…”

“…Regarding the composition of the biosurfactant extracted from CSW, it was characterized as a lipopeptide, composed by C16 and C18 fatty acids, comprising oleic, linoleic and stearic fatty acids which are linked to a small fraction of an organic nitrogen chain composed by amino acids (Rincón-Fontan, Rodríguez-López, Rodríguez-López, Vecino, Barbosa-Pereira, Moldes, & Cruz, 2016;Vecino, Rodríguez-López, Cruz, & Moldes, 2015b). Therefore, Rincón-Fontán et al (2017) reported that this biosurfactant possesses a molecular weight similar to the lipopeptides produced by B.subtillis.…”

The effect of the presence of biosurfactant on the permeation of pharmaceutical compounds through silicone membrane

“…Corn steep liquor is a corn stream, obtained from the corn wet-milling industry, spontaneously fermented by lactic acid bacteria, which is "Generally Recognized As Safe" (GRAS) by the US Food and Drug Administration (FDA). Furthermore, the same authors have observed that it is adsorbed on hair, potentially encouraging the permeation of compounds through the skin [13,14].…”