Bibliothek

feed icon rss

Ihre E-Mail wurde erfolgreich gesendet. Bitte prüfen Sie Ihren Maileingang.

Leider ist ein Fehler beim E-Mail-Versand aufgetreten. Bitte versuchen Sie es erneut.

Vorgang fortführen?

Exportieren
Filter
Materialart
Erscheinungszeitraum
  • 1
    Digitale Medien
    Digitale Medien
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food processing and preservation 2 (1978), S. 0 
    ISSN: 1745-4549
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Time required for gelation of 10% protein dispersions of commercial whey protein concentrate (WPC) heated at 100°C was influenced by preparation technique. Gel times ranged from 1.25 to greater than 30 min. Dialysis of a rapid gelling WPC resulted in the formation of stronger, more cohesive, less springy, more gummy, more chewy and more translucent gels with heating (100° C for 15 min) at 10% protein than did non-dialyzed WPC. Addition of CaCl2 or NaCl to the dialyzed WPC increased gel strength more dramatically than did salt addition to non-dialyzed WPC. Resistance to penetration and hardness of dialyzed whey protein gels maximized with CaCl2 addition from 5.0 to 20 mM and decreased with 25 mM CaCl2 addition. In non-dialyzed whey protein gels, resistance to penetration maximized at 25 mM added CaCl2 while hardness values maximized at 5.0 mM CaCl2. Addition of 0.2 to 0.5 M NaCl increased resistance to penetration of both whey protein gel systems. Hardness values for dialyzed WPC gels maximized at 0.1 to 0.3 M NaCl and decreased at 0.4 M or greater added NaCl. Hardness values of non-dialyzed WPC were only slightly affected by NaCl addition. Addition of CaCl2 at 5 mM or greater or NaCl at 0.1 Af or greater decreased cohesiveness and springiness of dialyzed WPC gels. Cohesiveness of non-dialyzed WPC gel systems was maximal at 10 mM CaCl2 or 0.2M NaCl. Salt had no apparent effect on springiness of the non-dialyzed WPC gels. Gumminess data followed similar trends to those observed for hardness with respect to salt effects in WPCgel systems. Maximum chewiness values for both WPC gel systems were apparent with addition of 5.0 to 10 mM CaC12 or with addition of0.1 to 0.3 M NaCl.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
  • 2
    Digitale Medien
    Digitale Medien
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 49 (1984), S. 0 
    ISSN: 1750-3841
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Casein, bovine serum albumin and soy globulin were succinylated and used as substrates, in both forms, for initial velocity studies of proteolysis by α-chymotrypsin and pepsin. Succinylation resulted in modification of at least 91% of the free amine groups of the proteins. Proteolysis was determined by fluorometrically monitoring the appearance of amine groups. Kinetic constants were estimated by the direct equation plot using FORTRAN programs. Succinylation enhanced the initial proteolysis of all substrates by either enzyme as evidenced by an increased maximum velocity and decreased Michaelis constant for the modified substrates. Modification of casein caused the most pronounced differences in rates of proteolysis, resulting in the largest change in kinetic constants for pepsin and the smallest change for α-chymotrypsin.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
  • 3
    Digitale Medien
    Digitale Medien
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 38 (1973), S. 0 
    ISSN: 1750-3841
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
  • 4
    Digitale Medien
    Digitale Medien
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 45 (1980), S. 0 
    ISSN: 1750-3841
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: COW'S milk systems fortified to 15.0% and 18.0% total solids with nonfat dry milk (NDM), peanut flour (PF) or soy protein isolate (SPI) were heated at 70, 80, 85, and 90°C for 30 min. Protein content ranged from 6.4% for NDM milk to 10.0% for SPI milks at 18.0% total solids. All milks exhibited pseudoplastic flow behavior at 4°C. Consistency index (K), or apparent viscosity (Q) at shear rate of unity, of PF and SPI milks was generally higher than that of similarly processed NDM milk. Increased total solids and increased heat treatment more dramatically increased the K value for oilseed milks than for NDM milk. Storage (10 days at 4°C) increased K value of SPI milk heated at 80°C or above. Stirred viscosity of yogurt prepared from PF milk heated at 85°C was lower than that of similarly processed NDM and SPI yogurt. Increased total solids increased all yogurt texture data for NDM yogurt, penetration work data for PF yogurt and stirred viscosity data for SPI yogurt. Texture data were maximal with heating at 80–85°C for NDM yogurt and with heating at 90°C for SPI and PF yogurt. Yogurt texture data increased with storage in NDM systems heated at 85°C or above and in SPI systems heated at 90°C.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
  • 5
    Digitale Medien
    Digitale Medien
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 38 (1973), S. 0 
    ISSN: 1750-3841
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
Schließen ⊗
Diese Webseite nutzt Cookies und das Analyse-Tool Matomo. Weitere Informationen finden Sie hier...