Library

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 55 (1990), S. 0 
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Color standards from the Natural Color System (NCS) were selected by a sensory panel to match color of raw flesh of astaxanthin-fed Atlantic salmon (Salmo salar L.). The NCS notations, blackness, chromaticity and hue, of the most frequently selected standards are given. A linear relationship between average NCS hue and NCS chromaticity values of each salmon was obtained, the hue being more reddish at high color intensities. NCS chromaticity and hue were both significantly correlated with carotenoid concentration and with instrumentally obtained CIE (1976) a*, b* and hue values. Procedures for the selection of NCS standards and for the practical use of a color card in the evaluation of salmon color, were developed.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 50 (1985), S. 0 
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Free anthocyanin and Hunter a'value deterioration in blackcurrant syrups during storage followed fist order reaction kinetics. Half-life of Hunter a'values were 3-4 times higher than half-life values of free anthocyanins. Syrups from various cultivars. differed in color stability. Degassing of syrups prior to storage did not enhance color stability. Day-light storage of syrups lowered half-life of Hunter a'values by 10-30% compared with dark storage. Storage in oxygen permeable packaging materials reduced Hunter a'half-life values up to 90%. Hue values should be used rather than absorbance ratios A502A420 to judge color quality. Hunter a'values should be above 50 and hue values below 40–45' to ascertain acceptable color.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 55 (1990), S. 0 
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Strawberries were individually quick-frozen (IQF) and packed with 10, 20 and 40% by weight added sucrose. Samples were stored at - 15°C for 3 yr and analyzed for: total monomeric anthocyanin pigment, polymeric color, browning and color density. To test the influence of thawing, half the samples were thawed and refrozen prior to analysis. One- and two-way analysis of variance (ANOVA) revealed that sucrose addition had a significant protective effect on anthocyanin pigment content and also retarded browning and polymeric color formation. Thawing accelerated these color degradative reactions.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 4
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 51 (1986), S. 0 
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Color of wild, astaxanthin pigmented, and farmed, canthaxanthin pigmented, Atlantic salmon (Salmon salar) was evaluated by spectroscopy and visual sensory analyses. A more yellow hue in farmed salmon color compared with wild salmon was found in acetone extracts of raw salmon flesh and by visual sensory analyses of raw, baked and smoked salmon flesh. With instrumental color analysis directly on raw flesh, no significant differences in color between wild and farmed salmon were found. The redness and hue in raw and baked salmon flesh and the redness in smoked salmon were correlated to the pigment concentration in raw salmon. The redness and hue in processed salmon were predictable from the redness and hue of raw flesh.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 5
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 55 (1990), S. 0 
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Color of rainbow trout (Onchorynchus mykiss) was investigated using sensory and instrumental analysis. When judged in pairs with equal carotenoid concentration, astaxanthin caused less whiteness, higher chromaticity and more red hue of trout flesh than canthaxanthin. Sensory assessed whiteness, chromaticity and red hue significantly correlated with instrumental values for lightness, chromaticity and hue [CIE (1976) L*a*b* and H(°)ab]. Multivariate regression analysis improved the predictability for all sensory variables compared with univariate analysis. Prediction of carotenoid concentration from instrumental values was better for astaxanthin than for canthaxanthin.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 6
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 48 (1983), S. 0 
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The ability of several instrumental methods to predict visual color deterioration in blackcurrant syrup was studied using a linear calibration method. Commercial syrup was used in a storage experiment to generate samples of a wide color quality range. Packaging material greatly influenced color stability, storage time varied from 2 months with high-density polyethylene bottles, to 8 months with polyvinylchloride, 12 months with polyester and more than 18 months with glass bottles. Combinations of Hunter L', a' and b' values and of absorbances at three selected wavelengths, the absorbance ratio A520/A420 hue and Hunter a’all revealed acceptable predicting abilities for visual color. Multivariate treatment of the data gave best predictions. The absorbance ratio A520/A420 has the advantage of being independent of initial pigment content.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...