DietQuest for Food and Beverage Analysis




Cecil Instruments offer three DietQuest spectrophotometers fully pre-programmed for both food and beverage analysis. Methods include single and multi-wavelength measurements and spectral scanning.


All the pre-programmed methods are defined by national and international bodies and trade associations including the following:


AACC AOAC ALVA APA ASBC BS-EN CAA

DIN  FDA FIL-IDF GudRI IFU  IOB  IOCCC

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-sample measurements.

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 - Mannheim, Roche, Diogen, Megasyme etc. have been pre-programmed for a single cell or for 4 or 6 cells in an automatic changer.


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 - Data to a PC

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-programmed Convenience


The versatility of the DietQuest spectrophotometers is illustrated by the partial list of pre-programmed tests shown. Tests may be modified, or new tests programmed and stored by the user.

Food

Analyte

Method


Beverage

Analyte

Method








Baby food

Nitrate

MEBAFA


Beer

Copper

EBC

Barley

b-Glucan

EBC


Beer

Copper

EBC

Barley

a-Amylase

ICC


Beer

Nitrate

MEBAK

Caramel

Colour

EBC


Beer

Bitterness

AOAC

Cereal adjuncts

Colour

EBC


Beer

Colour

AOAC

Cheese

Citric acid

AOAC


Beer

D-Glucose

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-Glucan

EBC


Beverages, non alc.

Caffeine

AOAC

Malts

Colour

EBC


Beverages, tea

Caffeine

AOAC

Milk, dried

Lactic acid

IDF


Diabetic beer

D-Glucose

MEBAFA/B-M

Olive oil

Quality

OJEC


Fruit juice

Glycerol

MEBAFA/B-M

Seafood

Histamine

AOAC


Fruit & veg. juice

L-Lactic acid

BS-EN

Spice, pepper

Piperine

AOAC


Malt beer

Colour

EBC

Sugar

Colour

ICUMSA


Milk

L&D-Lactic acid

DIN

Tomato ketchup

Acetic acid

MEBAFA


Orange juice

Adulteration

AOAC

Wheat

a-Amylase

ICC


Spirits, Distilled

Fusel oil

AOAC

Wort

Colour

EBC


Wine

D-Glucose/Fructose

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.

DataStream software Specifications and Spectrophotometer Ordering

DietQuest UV/Visible Spectrophotometers