Modeling the effects of microfluidization conditions on properties of corn bran. (September 2016)

• Record Type: Journal Article
• Authors: He, Fuli; Wang, Tao; Zhu, Si; Chen, Guibing
• Is Part Of: Journal of cereal science. Volume 71(2016)
• Page Start: 86
• Page End: 92
• Publication Date: 2016-09
• Subjects: Microfluidization -- Corn bran -- Pressure -- Number of passes; ABTS 2, 2′-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) -- AP adequate precision -- CS calculated specific surface area -- CV coefficient of variation -- DPPH 1, 1-diphenyl-2-picrylhydrazyl radical -- FAE ferulic acid equivalents -- MV mean volume diameter -- OHC oil-holding capacity -- PSD particle size distribution -- SC swelling capacity -- SRPC surface reactive phenolic contents -- SS sum of squares -- TE Trolox equivalents -- TEAC Trolox equivalent antioxidant capacity -- TROLEX 6-hydroxy-2, 5, 7, 8-tetramehylchroman-2-carboxylic acid -- WHC water-holding capacity; Grain -- Periodicals; Cereal products -- Periodicals; Céréales -- Périodiques; Produits céréaliers -- Périodiques; Cereal products; Grain; Periodicals; 664.705
• DOI: 10.1016/j.jcs.2016.08.002
• Languages: English
• ISSNs: 0733-5210

Abstract

Abstract: Corn bran was microfluidized through a 200-μm channel in the pressure range of 124.1–158.7 MPa for 1–5 passes following the central composite experimental design. Physicochemical properties and antioxidant properties of microfluidized bran samples were measured and fitted to the second order polynomial model. The response surface equations obtained showed that all the properties examined had a positive linear relationship with pressure and a negative quadratic relationship with number of passes except for ABTS radical scavenging activity which was quadratically related to both processing parameters. The number of passes generally had a more pronounced effect on the examined properties compared with pressure. Within the experimental range, the maximum values of swelling capacity, water-holding capacity, and oil-holding capacity were respectively 10.62 ml/g d.w. (at 158.7 MPa), 5.49 g water/g d.w. (at 158.7 MPa), and 4.61 g oil/g d.w. (at 124.1 MPa); the maximum values of surface reactive phenolic content, DPPH and ABTS radical scavenging activities were 148.80 mg/FAE g d.w. (at 158.7 MPa), 50.02 μmol TE/g d.w. (at 158.7 MPa), and 47.90 μmol TE/g d.w. (at 145.9 MPa), respectively. All maximum values of the properties occurred at 5 passes. Highlights: Corn bran was microfluidized under different pressures and number of passes. Number of passes affected bran's properties more pronouncedly than pressure. All properties except OHC had a positive linear relationship with pressure. Properties except ABTS had a negative quadratic relationship with number of passes. ABTS activity had a negative quadratic relationship with both pressure and pass.