Physicochemical properties and oxidative stability of oleogels made of carnauba wax with canola oil or beeswax with grapeseed oil

Abstract

Two types of oleogels-made of carnauba wax with canola oil or beeswax with grapeseed oil-were prepared at concentrations from 0 to 15% (w/w) of wax. Physical characterization was done and oxidative stability of the oleogels were evaluated. As the proportion of wax increased from 5 to 15%, the enthalpy of crystallization and melting increased in both oleogels. The carnauba wax-based oleogel (CWO) required greater enthalpy than the beeswax-based oleogel (BWO). Differences in L*, a*, and b* values between control oils and the oleogels significantly decreased as the concentration of wax increased in the oleogels (5-15%; <0.05). Oil-binding capacity of the BWO was higher than that of the CWO. Solid-fat content of the CWO did not change significantly from 10 to 60oC, whereas that of the BWO decreased. In general, oxidative stability of the CWO was better at 60 and 180oC heat treatment in comparison with control oils (<0.05). However, the BWO did not provide high oxidative stability than the control oils.

Effect of turanose on the rheology and oil uptake of instant fried noodles

“…Figure b shows the peroxide value of the fried noodles samples, which is a good measure of the amount of primary oxidation products in oils during storage (Yi et al ., ). The 4% turanose noodle had the lowest peroxide values, followed by the 2% turanose and control samples.…”

“…These textural properties could play a positive role in the quality attributes of noodles by providing greater resistance against physical damages during handling and storage. Figure 3b shows the peroxide value of the fried noodles samples, which is a good measure of the amount of primary oxidation products in oils during storage (Yi et al, 2017). The 4% turanose noodle had the lowest peroxide values, followed by the 2% turanose and control samples.…”

Stability of Tocopherol Homologs in Bulk Oils at 60°C Oxidation and Chlorophyll Photosensitization by the Action of Moisture

“…The headspace oxygen content in the air‐tight sample vials was analyzed using a 7890 gas chromatograph (GC) (Agilent Technologies, Inc.) equipped with a 60/80 packed column (3.0 m × 2 mm ID, Restek Ltd., Bellefonte, PA, USA) and a thermal conductivity detector (TCD) according to methods of Yi et al (). The flow rate of helium gas was set at 200 mL min −1 .…”

Modification of chitosan using hydrogen peroxide and ascorbic acid and its physicochemical properties including water solubility, oil entrapment and in vitro lipase activity

“…The final composition of the sample in the reaction cell was 100 mg of lipid, 5 mg mL À1 of bile extract, 1.6 mg mL À1 of lipase and 5 mM CaCl 2 unless otherwise stated. Mixture of corn oil and 7% (w/w) beeswax or carnauba wax were prepared according to the previous report (Yi et al, 2017). The supernatant of the final product was obtained by centrifugation.…”