Determination of thermal, molecular changes, and functional properties in stabilized rice bran
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Raciye Meral
Abstract
In this study, stabilization was performed using three different oven temperatures (110, (T1) 130 (T2) and 150 °C(T3)) in the oven set at 10% moisture. The effect of stabilization on lipase activity, functional, and thermal properties of rice bran. Lipase activity of control (27.92 U/g) was to be higher than stabilized rice bran samples. Starch gelatinization peak temperature ranged from 70.05 (T3) to 85.09 °C (control). DPPH scavenging effect of control was 12.99 mmol TE. The highest DPPH radical scavenging effect value (15.72 mmol TE) was determined in the T3 sample. ABTS radical scavenging effect of stabilized samples significantly increased (p < 0.05) and the increase for T1, T2, and T3 was found to be 73, 75, and 77%, respectively. The highest ferulic (4284 μg/g) and p-coumaric acid (1180 μg/g) contents were determined in T3 and T1 samples, respectively. The content of bound ferulic and p-coumaric acids of stabilized rice bran samples was 2.41 and 2.33 times higher than control samples. While prolamine content was 3.38–4.18 mg/mL; glutelin content ranged from 4.45 to 5.11 mg/mL. An obvious state change during stabilization was observed in all samples around 70–85.9 °C. The results of the study revealed that stabilization might change the functional and thermal properties of rice bran.
Funding source: YYU
Award Identifier / Grant number: FBA-2019-7926
Acknowledgments
This project was supported by the Scientific Research Project Chairmanship of YYU (FBA-2019-7926).
Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
Research funding: This project was supported by the Scientific Research Project Chairmanship of YYU (FBA-2019-7926).
Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
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© 2021 Walter de Gruyter GmbH, Berlin/Boston
Articles in the same Issue
- Frontmatter
- Articles
- Determination of thermal, molecular changes, and functional properties in stabilized rice bran
- Study on the adsorption effect of diatomite on neosolaniol (NEO) in muskmelon fruits inoculated with Fusarium sulphureum
- Mitigation of relative humidity (RH) on phytochemicals and functional groups of dried pineapple (Ananas comosus) slices
- Tri-frequency ultrasound as pretreatment to infrared drying of carrots: impact on enzyme inactivation, color changes, nutrition quality parameters and microstructures
- Effects of phenolic compounds from blueberry leaves on the thermal decomposition of trimethylamine oxide in squid extract
- Impact of high-pressure homogenization on the microstructure and rheological properties of citrus fiber
- Thermal physical properties of the golden pomfret at low temperatures
- Characterization of sheep tail fat dry fractionation at the pilot scale
Articles in the same Issue
- Frontmatter
- Articles
- Determination of thermal, molecular changes, and functional properties in stabilized rice bran
- Study on the adsorption effect of diatomite on neosolaniol (NEO) in muskmelon fruits inoculated with Fusarium sulphureum
- Mitigation of relative humidity (RH) on phytochemicals and functional groups of dried pineapple (Ananas comosus) slices
- Tri-frequency ultrasound as pretreatment to infrared drying of carrots: impact on enzyme inactivation, color changes, nutrition quality parameters and microstructures
- Effects of phenolic compounds from blueberry leaves on the thermal decomposition of trimethylamine oxide in squid extract
- Impact of high-pressure homogenization on the microstructure and rheological properties of citrus fiber
- Thermal physical properties of the golden pomfret at low temperatures
- Characterization of sheep tail fat dry fractionation at the pilot scale
