A multifunctional extract from corn steep liquor: antioxidant and surfactant activities

2016 ◽  
Vol 7 (9) ◽  
pp. 3724-3732 ◽  
Author(s):  
L. Rodríguez-López ◽  
X. Vecino ◽  
L. Barbosa-Pereira ◽  
A. B. Moldes ◽  
J. M. Cruz
Keyword(s):  
Corn Steep Liquor ◽  
Liquid Extraction ◽  
Liquid Liquid Extraction ◽  
Hydrothermal Processes ◽  
Steep Liquor ◽  
Multifunctional Properties

A bioactive extract with multifunctional properties can be obtained after subjecting corn steep liquor to liquid–liquid extraction and hydrothermal processes.

scholarly journals Evaluation of Morphological Changes in Grapes Coated with a Biosurfactant Extract Obtained from Corn Steep Liquor

2021 ◽  
Vol 11 (13) ◽  
pp. 5904
Author(s):  
Andrea Martínez-Arcos ◽  
Alejandro López-Prieto ◽  
Lorena Rodríguez-López ◽  
Benita Pérez-Cid ◽  
Xanel Vecino ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Antimicrobial Activity ◽  
Morphological Changes ◽  
Corn Steep Liquor ◽  
Bioactive Compound ◽  
Liquid Extraction ◽  
Non Invasive ◽  
Liquid Liquid Extraction ◽  
Steep Liquor ◽  
Over Time

In this work, grapes were coated with a multifunctional biosurfactant extract obtained from corn steep liquor after liquid–liquid extraction with ethyl acetate. This biosurfactant extract has been demonstrated to not only possess a surfactant capacity but also antimicrobial activity. Hence, it could be an excellent preservative for fruits, as it is more biodegradable and more biocompatible than chemically synthetized preservatives. However, before applying this biosurfactant as a preservative on fruits, it is necessary to study the changes in the surface properties of fruits produced by the addition of this bioactive compound. Therefore, in this work, grapes coated with an aqueous solution containing 1 g/L of the biosurfactant extract were subjected to surface analysis using non-invasive technologies, including profilometry. 2D digital photographs of the surface and parametric roughness of grapes were obtained. They revealed that the biosurfactant extract decreased the roughness of the grape surface compared with non-coated grapes and reduced the changes in the shape of the grapes over time. Moreover, it was observed that the biosurfactant extract increased the hydrophobicity of the grape surface observing higher contact angle compared with non-coated grapes.

Optimization of liquid–liquid extraction of biosurfactants from corn steep liquor

2015 ◽  
Vol 38 (9) ◽  
pp. 1629-1637 ◽  
Author(s):  
X. Vecino ◽  
L. Barbosa-Pereira ◽  
R. Devesa-Rey ◽  
J. M. Cruz ◽  
A. B. Moldes
Keyword(s):  
Corn Steep Liquor ◽  
Liquid Extraction ◽  
Liquid Liquid Extraction ◽  
Steep Liquor

Comparison of Sorption and Extraction Methods for Recovery of Trace Organics from Water

1983 ◽  
Vol 15 (6-7) ◽  
pp. 149-159 ◽  
Author(s):  
V C Blok ◽  
G P Slater ◽  
E M Giblin
Keyword(s):  
Solvent Extraction ◽  
Methylene Chloride ◽  
Extraction Methods ◽  
Liquid Extraction ◽  
Standard Mixture ◽  
Liquid Liquid Extraction ◽  
Trace Organics ◽  
Tenax Gc

Several commercially available adsorbents were compared with solvent extraction methods for their utility in recovering trace organics from water. The adsorbents examined included Amberlite XAD-2, XAD-4 and XAD-8, Ambersorb XE340 and XE348 and Tenax-GC. All were found to produce high artifact levels, even after extensive clean-up, making them unsuitable for the analysis of trace organics in water. Quantitatively, Likens-Nickerson or continuous liquid-liquid extraction with méthylene chloride gave better recoveries than the adsorbents. Qualitatively, extractive methods were preferred as they yielded much lower levels of impurities than the adsorbents. These methods of recovering trace organics were evaluated using a standard mixture of compounds added to the water at a level of 55 µg/l. Likens-Nickerson extraction gave comparable recoveries of this mixture at 55 µg/l and 11 µg/l.

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