Breckland Scientific 2023 Catalogue

Food Testing

Food Testing Reagents

a

Information See CHEMICAL SECTION for chemical specific data

ALBUMEN (EGG WHITE) A great source of peptides to help demonstrate the presence and breakdown using biuret reagent. Protein >80% Cat No. Description Price Per S0001015-100G Egg White (Albumen) 11.11 100g 1 FOOD DYES A set of seven named powdered food dyes, including 1 gram each of: E102 Tartrazine, E133 Brilliant Blue, E122 Carmoisine, E110 Sunset Yellow, E131 Patent Blue V, E142 Green S, E127 Erythrosine. Ideal for chromatography experiments. Contents 7 x 1g. Cat No. Description Price Per CHR-120-100 Food Dyes Set 34.68 set

b

c

STARCH - SOLUBLE Fully soluble starch perfect for demonstrating the breakdown into sugars using amylase. Cat No. Description Price Per S0001336-500G Starch - Soluble 5.84 500g GLUCOSE (DEXTROSE MONOHYDRATE) A product of photosynthesis and essential part of the building blocks of life. Cat No. Description Price Per S0001143-500G Glucose - (Dextrose Monohydrate 5.43 500g (CANE SUGAR) A naturally occurring carbohydrate in many plants often extracted from sugar cane. Cat No. Description Price Per S0001340-3KG Cane Sugar -LR 12.98 3kg S0001410-500G Cane Sugar- AR 6.09 500g (D.C.P.I.P TABLETS) An indicator of Vitamin C. The blue dye will turn pink in acidic conditions and is reduced to a colourless compound by ascorbic acid. Cat No. Description Price Per S0001119-5G D.C.P.I.P. Tablets 21.51 5g S0001062-PK10 D.C.P.I.P. Tablets 7.98 10pk BENEDICT’S SOLUTION QUALITATIVE Used to test for the presence of the aldehyde functional group ( - CHO), which is present in monosaccharides and other sugars. Cat No. Description Price Per S0001041-500ML Benedict’s Solution Qualitative 4.66 500ml S0001041-2.5L Benedict’s Solution Qualitative 16.23 2.5l BENEDICT’S SOLUTION QUANTITATIVE The potassium thiocyanate in the solution allows the determination of how much sugar is present. This forms a copper thiocyanate precipitate which can then be titrated. Cat No. Description Price Per S0002031-500ML Benedict’s Solution Quantitative 15.73 500ml S0002031-2.5L Benedict’s Solution Quantitative 41.48 2.5l ETHANOL Pure ethanol or 200 proof alcohol. A very diverse solvent. Cat No. Description Price Per S3201916-100ML Ethanol 15.18 100ml S3201916-500ML Ethanol 54.99 500ml GELATINE POWDER Used as a gelling agent in the food and pharmaceutical industry. Cat No. Description Price Per S0001141-500G Gelatine Powder 19.98 500g

d

e

f

1

g

h

i

j

Food Dyes

k

BIURET REAGENT Detects peptides which are found in proteins. copper (II) ions form a violet coloured solution in the presence of peptides and when in an alkaline solution. Cat No. Description Price Per S0001049-500ML Biuret Reagent 6.28 500ml FEHLING’S SOLUTIONS Fehling’s Solution No.1 is an aqueous solution of copper sulphate. Fehling’s Solution No.2 is an aqueous solution of alkaline tartrate. Use to distinguish between aldehyde and ketone functional groups. The aldehydes are oxidised which in turn reduces the copper (II) ions to copper (I) ions. The reactions are similar to that of Benedict’s solution. Cat No. Description Price Per S0001133-500ML Fehling’s Solution No.1 4.98 500ml S8001134-500ML Fehling’s Solution No.2 8.20 500ml IODINE 1% SOLUTION IN KI A 1% Iodine solution made soluble by the presence of potassium iodide. Cat No. Description Price Per S0001159-500ML Iodine 1% Solution in KI 9.72 500ml S0001159-2.5L Iodine 1% Solution in KI 33.48 2.5l SUDAN III Sudan (III) has a high affinity to fats so is often used with lipids and lipoproteins. Also very effective at dyeing plastics and fabrics. Cat No. Description Price Per S0001341-10G Sudan III 5.58 10g S3201342-100ML Sudan III 5.44 100ml

l

m

n

o

p

q

r

s

t

Related Products... For pH indicators & meters see pH pages

v

w

208

Value | Service | Expertise