540c478f8da7b9d889004386720e3855 processes_a2017m2v5n1p6.pdf ec7fcce3dd439945076d398f2f1dfce4533fb553 processes_a2017m2v5n1p6.pdf 62029b21bac014ad83697f12a6f82d49a256294a748ac31f63ea0ea942f2d706 processes_a2017m2v5n1p6.pdf Title: Characterization of Whey Protein Oil-in-Water Emulsions with Different Oil Concentrations Stabilized by Ultra-High Pressure Homogenization Subject: In this study, the effect of ultra-high-pressure homogenization (UHPH: 100 or 200 MPa at 25 C), in comparison to colloid mill (CM: 5000 rpm at 20 C) and conventional homogenization (CH: 15 MPa at 60 C), on the stability of oil-in-water emulsions with different oil concentrations (10, 30 or 50 g/100 g) emulsified by whey protein isolate (4 g/100 g) was investigated. Emulsions were characterized for their microstructure, rheological properties, surface protein concentration (SPC), stability to creaming and oxidative stability under light (2000 lux/m2). UHPH produced emulsions containing lipid droplets in the sub-micron range (100–200 nm) and with low protein concentrations on droplet surfaces. Droplet size (d3.2, m) was increased in CH and UHPH emulsions by increasing the oil concentration. CM emulsions exhibited Newtonian flow behaviour at all oil concentrations studied; however, the rheological behaviour of CH and UHPH emulsions varied from Newtonian flow (n 1) to shear-thinning (n ˂ 1) and thixotropic behaviour in emulsions containing 50% oil. This was confirmed by the non-significant differences in the d4.3 (m) value between the top and bottom of emulsions in tubes left at room temperature for nine days and also by a low migration velocity measured with a Turbiscan LAB instrument. UHPH emulsions showed significantly lower oxidation rates during 10 days storage in comparison to CM and CH emulsions as confirmed by hydroperoxides and thiobarbituric acid-reactive substances (TBARS). UHPH emulsions treated at 100 MPa were less oxidized than those treated at 200 MPa. The results from this study suggest that UHPH treatment generates emulsions that have a higher stability to creaming and lipid oxidation compared to colloid mill and conventional treatments. Keywords: ultra-high pressure homogenization (UHPH); whey protein; submicron emulsions; physical and oxidative stabilities Author: Essam Hebishy, Anna Zamora, Martin Buffa, Anabel Blasco-Moreno and Antonio-José Trujillo Creator: LaTeX with hyperref package Producer: pdfTeX-1.40.17 CreationDate: Mon Feb 13 04:42:12 2017 CET ModDate: Mon Feb 13 04:42:12 2017 CET Tagged: no UserProperties: no Suspects: no Form: none JavaScript: no Pages: 18 Encrypted: no Page size: 595.276 x 841.89 pts (A4) Page rot: 0 File size: 2071793 bytes Optimized: no PDF version: 1.5 name type encoding emb sub uni object ID ------------------------------------ ----------------- ---------------- --- --- --- --------- OVSHJU+URWPalladioL-Ital Type 1 Custom yes yes no 114 0 NWJIEN+URWPalladioL-Bold Type 1 Custom yes yes no 115 0 VYOQSN+URWPalladioL-Roma Type 1 Custom yes yes no 116 0 PSWGUI+CMSY10 Type 1 Builtin yes yes no 117 0 QKZKRU+EURM10 Type 1 Builtin yes yes no 118 0 BHUVWR+TimesNewRomanPS-BoldItalicMT Type 1C WinAnsi yes yes no 123 0 YOQSMH+CMBSY10 Type 1 Builtin yes yes no 190 0 ACIMHN+PalatinoLinotype TrueType WinAnsi yes yes no 250 0 ACIMLN+PalatinoLinotype,Italic TrueType WinAnsi yes yes no 251 0 ACIMMP+PalatinoLinotype,Bold TrueType WinAnsi yes yes no 252 0 ACINEN+TimesNewRoman CID TrueType Identity-H yes yes yes 253 0 ACINJM+TimesNewRoman TrueType WinAnsi yes yes no 254 0 ACIMHN+PalatinoLinotype TrueType WinAnsi yes yes no 285 0 ACIMLN+PalatinoLinotype,Italic TrueType WinAnsi yes yes no 286 0 ACIMMP+PalatinoLinotype,Bold TrueType WinAnsi yes yes no 287 0 ACINJM+TimesNewRoman TrueType WinAnsi yes yes no 288 0 XIRVNA+EURB10 Type 1 Builtin yes yes no 321 0 TYXEON+URWPalladioL-BoldItal Type 1 Custom yes yes no 322 0 ACIMHN+PalatinoLinotype TrueType WinAnsi yes yes no 344 0 ACIMLN+PalatinoLinotype,Italic TrueType WinAnsi yes yes no 345 0 ACIMMP+PalatinoLinotype,Bold TrueType WinAnsi yes yes no 346 0 ACINEN+TimesNewRoman CID TrueType Identity-H yes yes yes 347 0 ACINJM+TimesNewRoman TrueType WinAnsi yes yes no 348 0 ACIMHN+PalatinoLinotype TrueType WinAnsi yes yes no 378 0 ACIMLN+PalatinoLinotype,Italic TrueType WinAnsi yes yes no 379 0 ACIMMP+PalatinoLinotype,Bold TrueType WinAnsi yes yes no 380 0 ACINEN+TimesNewRoman CID TrueType Identity-H yes yes yes 381 0 ACINJM+TimesNewRoman TrueType WinAnsi yes yes no 382 0 java.lang.ClassCastException: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject cannot be cast to edu.harvard.hul.ois.jhove.module.pdf.PdfDictionary at edu.harvard.hul.ois.jhove.module.PdfModule.readDocCatalogDict(PdfModule.java:1284) at edu.harvard.hul.ois.jhove.module.PdfModule.parse(PdfModule.java:525) at edu.harvard.hul.ois.jhove.JhoveBase.processFile(JhoveBase.java:825) at edu.harvard.hul.ois.jhove.JhoveBase.process(JhoveBase.java:614) at edu.harvard.hul.ois.jhove.JhoveBase.dispatch(JhoveBase.java:465) at Jhove.main(Jhove.java:296) Jhove (Rel. 1.6, 2011-01-04) Date: 2018-04-10 04:40:43 CEST RepresentationInformation: processes_a2017m2v5n1p6.pdf ReportingModule: BYTESTREAM, Rel. 1.3 (2007-04-10) LastModified: 2018-04-09 11:37:14 CEST Size: 2071793 Format: bytestream Status: Well-Formed and valid SignatureMatches: PDF-hul MIMEtype: application/octet-stream Checksum: fd1961ac Type: CRC32 Checksum: 540c478f8da7b9d889004386720e3855 Type: MD5 Checksum: ec7fcce3dd439945076d398f2f1dfce4533fb553 Type: SHA-1