2020
DOI: 10.3390/foods9121788
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Corn Bioethanol Side Streams: A Potential Sustainable Source of Fat-Soluble Bioactive Molecules for High-Value Applications

Abstract: This paper reports data from a characterization study conducted on the unsaponifiable lipid fraction of dry-grind corn bioethanol side streams. Phytosterols, squalene, tocopherols, tocotrienols, and carotenoids were quantified by High Performance Liquid Chromatography with Diode-Array Detector (HPLC-DAD) and Liquid Chromatography-tandem Mass Spectrometry (LC-MS/MS) in different lots of post-fermentation corn oil and thin stillage collected from a bioethanol plant over a time-span of one year. Fat-soluble bioac… Show more

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Cited by 13 publications
(9 citation statements)
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“…With the SPE-FS, the extraction process was performed employing sequentially three different eluents (1500 mL of n-hexane, 1500 mL of a mixture n-hexane/AcOEt 85/15 v/v, and 1500 mL of AcOEt) at a flow rate of 25 mL/min. Three different low-polarity (3,4,5), two medium-polarity (6, 7), and two high-polarity fractions (8,9) were collected, dried, weighed, and stored at −20 • C until the analyses were performed.…”
Section: Solid Phase Extraction (Spe)mentioning
confidence: 99%
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“…With the SPE-FS, the extraction process was performed employing sequentially three different eluents (1500 mL of n-hexane, 1500 mL of a mixture n-hexane/AcOEt 85/15 v/v, and 1500 mL of AcOEt) at a flow rate of 25 mL/min. Three different low-polarity (3,4,5), two medium-polarity (6, 7), and two high-polarity fractions (8,9) were collected, dried, weighed, and stored at −20 • C until the analyses were performed.…”
Section: Solid Phase Extraction (Spe)mentioning
confidence: 99%
“…One co-product of dry-grind corn bioethanol biorefineries is post-fermentation corn oil, separated by centrifugation from a corn syrup obtained after enzymatic hydrolysis, fermentation, and distillation processes. Previous studies have highlighted the chemical composition and valorization potentials of dry-grind corn bioethanol biorefinery side streams [ 7 , 8 ]. In particular, post-fermentation corn oil is rich in plant sterols and stanols and also maintains the full set of tocopherols, tocotrienols, and carotenoids derived from the corn kernel as well as from yeast.…”
Section: Introductionmentioning
confidence: 99%
“…Separation occurred on an Ultrasphere C-18 column (25 cm × 4.6 mm inner diameter, 5 m, Beckman, Palo Alto, CA, USA) coupled with a C18 guard column (15 cm × 4.6 mm, 5 µm). Chromatographic conditions were as described previously [8]. To improve the identification of compounds, rapeseed meal extracts were also analysed with an LC-MS/MS system (Agilent 1200 quaternary pump) coupled to a 6410 series triple quadrupole.…”
Section: Unsaponifiable Lipid Fractionmentioning
confidence: 99%
“…Chromatographic separation was carried out on an ACME C18-120A, 100 mm × 2.1 mm column, with 3 µm particle size. Separation conditions and ionization parameters were as previously described [8]. The concentration of sitostanol in the samples (Lot 2, 4 and 6) was measured by LC-MS/MS with the triple quadrupole analyzer operated in the MRM mode, the precursor ion 399.7 (corresponding to the molecular weight with the loss of a water molecule and an H + gain) and the following product ions: 95.1 for quantification, 135.1, 109.1 and 81.1 for identification.…”
Section: Unsaponifiable Lipid Fractionmentioning
confidence: 99%
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