Classifications

• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
  • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
  • G01N33/02—Food
  • G01N33/04—Dairy products
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
  • G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
  • G01N17/004—Investigating resistance of materials to the weather, to corrosion, or to light to light
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
  • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
  • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
  • G01N21/59—Transmissivity
  • G01N21/5907—Densitometers
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
  • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
  • G01N33/02—Food

Definitions

• the light source is capable of producing light with a spectral signature of about 200 nm to about 2000 nm. In other embodiments, the light source is capable of providing light at a wavelength of at least about 200 nm, 220 nm, 240 nm, 260 nm, 280 nm, 290 nm, 300 nm, 350 nm, 400 nm, 450 nm, 500 nm, 550 nm, 600 nm, 650 nm, 700 nm, 750 nm, 800, nm, 900 nm, 1000 nm, 1250 nm, 1500 nm, 1750 nm, or 2000 nm.
• the temperature can be set at between about -10° C and about 50° C, about -5° C and about 25° C, about -2° C and about 10° C, about 0° C and about 8° C, about 1 ° C and about 7° C, about 2° C and about 6° C, about 3° C and about 5° C. In certain other embodiments, the temperature is set at about 4° C.
• the photosensitive entity is selected from:
• Each photosensitive entity can be present at a concentration of, for example, 0.0000001 wt% to 100 wt%. In certain embodiments, the photosensitive entity is present at a concentration of at least about
• 0.0000001 wt% 0.000001 wt%, 0.00001 wt%, 0.0001 wt%, 0.001 wt%, 0.01 wt%, 0.01 wt%, 0.1 wt%, 1 .0 wt%, 2.0 wt%, 3.0 wt%, 4.0 wt%, 5.0 wt%, 10.0 wt%, 20.0 wt%, 30.0 wt%, 40.0 wt%, 50.0 wt%, 60.0 wt%, 70.0 wt%, 80.0 wt%, 90.0 wt%, 95.0 wt%, 99.0 wt%, or 100.0 wt%.
• sampling intervals should be selected to obtain a minimum of three data points.
• the sampling intervals are selected to obtain at least 4, 5, 6, 7, 8, 9, 10, 1 1 , 12, 13, 14, 15, 16, 17, 18, 19, 20, 25, 30, 35, 40, 45, or 50 data points.
• the data points are evenly distributed or nearly-evenly distributed throughout the entire duration of the run time. Selected intervals will be dependent upon the rate of change of the photosensitive entities.
• the samples are extracted automatically via syringe pump or other suitable device and delivered directly to analytical equipment for analysis.
• the photoprotective performance values of these known materials can then be used to confidently assign a predicted photoprotective performance value to a material of the same class that has not been evaluated using the apparatus of the present invention, but that does have a known value for the quantitative or qualitative parameter included in the model. For instance, several test materials with known TAPPI opacity values and/or known T1O2 concentrations could be evaluated using the apparatus and methods disclosed herein, and a photoprotective performance value assigned to each.
• the rate constant data from Example 1 are analyzed along with additional characterization of the film swatches.
• the rate constant data in Table 1 are plotted in FIG. 6 along with a fitted data model. This data model was fitted to the data points to yield a photoprotective model as a function of TAPPI Opacity.

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• Life Sciences & Earth Sciences (AREA)
• Health & Medical Sciences (AREA)
• Chemical & Material Sciences (AREA)
• Physics & Mathematics (AREA)
• Analytical Chemistry (AREA)
• Biochemistry (AREA)
• General Health & Medical Sciences (AREA)
• General Physics & Mathematics (AREA)
• Immunology (AREA)
• Pathology (AREA)
• Food Science & Technology (AREA)
• Engineering & Computer Science (AREA)
• Ecology (AREA)
• Environmental & Geological Engineering (AREA)
• Environmental Sciences (AREA)
• Biodiversity & Conservation Biology (AREA)
• Medicinal Chemistry (AREA)
• Investigating Or Analysing Materials By Optical Means (AREA)
• Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
• Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
• Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
• Packages (AREA)

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• 2013
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