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DietQuest for Food and Beverage Analysis
Cecil Instruments offer three DietQuest spectrophotometers fully pre-
All the pre-
AACC AOAC ALVA APA ASBC BS-
DIN FDA FIL-
ISO MAFF MEBAK NEW NF OIV OJEC
Concentration Curve Fit
Where concentration is not linearly related to Absorbance, a quadratic or cubic curve may be fitted to up to 30 standards or replicates and edited before use. A straight line may be fitted to linear results and 30 curves may be stored security protected.
Even the most complex assay is carried out simply by selecting from the displayed menu the required, method inserting blanks, references and samples as prompted. Just press the run key for automatic measurement and calculation of the result. All results are displayed on screen and printed, timed and dated, on the integral or external printer.
Simple Rapid Operation
User Programming
Never before has user programming of assays for automatic measurement and computation been so simple and rapid.
Cecil Assay programme software allows any assay to be formulated for up to 10 wavelengths. Rapid entry of text and formulae and setting a wavelength program is all that is required.
Up to 20 formulae, each with up to 76 characters, may be combined for the most complex method and cell programming may be incorporated for multi-
Flexibility of Application
DietQuest UV/Visible spectrophotometers additionally have all the functions of a high quality spectrophotometer and may therefore find wide application in a testing laboratory. Where only visible determinations are required the 'DietQuest : Vis' is offered and a full, high performance double beam instrument 'DietQuest : D/B' completes the range.
Reaction Kinetics
Enzyme reaction methods using kits supplied by Boehringer -
Reaction curves are displayed on screen and regression analysis applied to the user selected part of the curve. A number of the assays are simple end point measurements.
Sample temperature control, where required, is available using either water circulation or Peltier Thermoelectric cell holders and controller.
Sipette Sampling
Samples may be handled rapidly and without cell handling using the sipette sampling system. Sample volume is user selected and low cross contamination occurs even with samples as small as 350µL.
DataStream -
Both raw, and processed and formatted data may rapidly be exported to a PC for incorporation into a spreadsheet or mathematical package of the users choice, e.g. Excel, Grafit etc. for manipulation and report generation.
Pre-
The versatility of the DietQuest spectrophotometers is illustrated by the partial list of pre-
Food |
Analyte |
Method |
|
Beverage |
Analyte |
Method |
|
|
|
|
|
|
|
Baby food |
Nitrate |
MEBAFA |
|
Beer |
Copper |
EBC |
Barley |
b- |
EBC |
|
Beer |
Copper |
EBC |
Barley |
a- |
ICC |
|
Beer |
Nitrate |
MEBAK |
Caramel |
Colour |
EBC |
|
Beer |
Bitterness |
AOAC |
Cereal adjuncts |
Colour |
EBC |
|
Beer |
Colour |
AOAC |
Cheese |
Citric acid |
AOAC |
|
Beer |
D- |
MEBAK |
Egg |
Carotenoids |
AOAC |
|
Beer |
Bitterness |
EBC |
Egg, yolk |
Colour |
AOAC |
|
Beer |
Colour |
EBC |
Flour |
Pigment |
AOAC |
|
Beer |
Polyphenols |
EBC |
Foodstuffs |
Sulphite |
UDC |
|
Beer |
Vicinal Diketones |
EBC |
Macaroni |
Carotenoids |
AOAC |
|
Beer, low alc |
Ethanol |
EBC |
Malt |
Colour |
EBC |
|
Beverages, coffee |
Caffeine |
AOAC |
Malt |
b- |
EBC |
|
Beverages, non alc. |
Caffeine |
AOAC |
Malts |
Colour |
EBC |
|
Beverages, tea |
Caffeine |
AOAC |
Milk, dried |
Lactic acid |
IDF |
|
Diabetic beer |
D- |
MEBAFA/B- |
Olive oil |
Quality |
OJEC |
|
Fruit juice |
Glycerol |
MEBAFA/B- |
Seafood |
Histamine |
AOAC |
|
Fruit & veg. juice |
L- |
BS- |
Spice, pepper |
Piperine |
AOAC |
|
Malt beer |
Colour |
EBC |
Sugar |
Colour |
ICUMSA |
|
Milk |
L&D- |
DIN |
Tomato ketchup |
Acetic acid |
MEBAFA |
|
Orange juice |
Adulteration |
AOAC |
Wheat |
a- |
ICC |
|
Spirits, Distilled |
Fusel oil |
AOAC |
Wort |
Colour |
EBC |
|
Wine |
D- |
OIV |
An Example of an application, Detection of Adulteration of processed Florida Orange Juice
Juice must not contain pulpwash solids. Using method AOAC 986.14 adulteration is measured by comparison of spectra, and using the adjusted sum of Absorbances at 443, 325 and 250nm and their ratio at 443 : 325nm.
HPLC |
Spectrophotometers |
IonQuest Ion Chromatography |
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Dissolution Testing |
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CE Certificate Spectrophotometers |
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