Effect of Ultrasound-Treated Arabinoxylans on the Oxidative Stability of Soybean Oil

Abstract

Arabinoxylans (AX) are polysaccharides with antioxidant activity and emulsifying properties, which make them an attractive alternative for its potential application as a natural antioxidant in oils. Therefore, this work aimed to investigate the effect of ultrasonic treatment of AX on their antioxidant capacity and its ability to improve the oxidative stability of soybean oil. For this purpose, AX were exposed to ultrasonic treatment at 25% (100 W, AX-1) and 50% (200 W, AX-2) power and an operating frequency of 20 KHz during 15 min, and their macromolecular properties (weight average molecular weight (Mw), polydispersity index and intrinsic viscosity) were evaluated. The antioxidant capacity of AX was determined by the DPPH assay and Rancimat test. Results showed that ultrasonic treatment did not affect the molecular identity of the polysaccharide but modified its Mw distribution. AX-1 showed the highest antioxidant activity (75% inhibition) at 533 µg/mL by the DPPH method compared to AX and AX-2. AX at 0.25% (w/v) and AX-1 at 0.01% (w/v) exerted the highest protective effects on oxidative stability of soybean oil with induction periods of 7.69 and 5.54 h, respectively. The results indicate that AX could be a good alternative for the potential application as a natural antioxidant in oils.

Fine structural features and antioxidant capacity of ferulated arabinoxylans extracted from nixtamalized maize bran

“…The AC in MBAX determined by the ABTS method (25 μmol TE g −1 ) was slightly higher than those reported in other AX recovered from nixtamalized maize (6.09–21.27 μmol TE g −1 ), 22,52 but lower than those reported for AX from distiller's dried grains with solubles (32.09–68.05 μmol TE g −1 ) 52‐54 . By using the DPPH method, MBAX registered a lower AC (20 μmol TE g −1 ) than those found in other AX extracted from nixtamalized maize (2909–31.69 μmol TE g −1 ) 21 and distiller's dried grains with solubles (28.00–44.30 μmol TE g −1 ) 52‐55 …”

“…[52][53][54] By using the DPPH method, MBAX registered a lower AC (20 μmol TE g −1 ) than those found in other AX extracted from nixtamalized maize (2909-31.69 μmol TE g −1 ) 21 and distiller's dried grains with solubles (28.00-44.30 μmol TE g −1 ). [52][53][54][55] Fine structural features and antioxidant capacity relationship It has been reported that FA content in AX is positively correlated with the polysaccharide AC. [56][57][58] Similarly, it has been observed that the release of FA from AX by enzymatic or chemical treatment substantially decreases its AC.…”

Ultrasound Treatment of Buckwheat Grains Impacts Important Functional Properties of Resulting Flour

“…For the specific modification of food-derived proteins, the ultrasound processing is considered a standard and effective modification technology [ 8 ]. UST is also successfully exploited as an extraction assisting process [ 9 , 10 , 11 ]. The fast mass transfer has been observed during the ultrasound-assisted extraction of polyphenols and other antioxidant compounds from different matrix [ 12 ].…”

Phytochemical profile, in vitro anti‐inflammatory, and anti‐xanthine oxidase activity of durian fruit rind fractions (Durio zibethinus)

“…Heat-induced haemolysis. The assay was established as described by Mendez-Encinas et al (2023). Briefly, blood cell suspension (50 μL) and 50 μL of durian fruit rind extract and fractions at different concentrations (50-200 μg mL À1 ) were mixed with 1.95 mL of phosphate-buffered saline (PBS).…”