Usages: Yeast extract promotes growth of a wide variety of microorganisms, including yeasts and moulds.
Technical specification: Total nitrogen(TN)—————————≥10.0% Amino nitrogen(AN) ————————≥4.5% Sulphuric ash———————————-≤15.0% Loss on drying——————————–≤6.0% Chlorides————————————–≤0.5% PH(5% solution)——————————7.0±0.5 Proteoses—————————————positive Tryptophan———————————— positive Nitrites—————————————–negative
Storage: Keep container tightly closed, store in a cool, dry place, away from bright light.
Specifications: 500g/bottle; 10kg /bag
Other Products
Aluminum Block – 1.5 / 2.0mL tubes
Product Info
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Product Info
The Opentrons 24-well Aluminum Block can be placed directly on the OT-2/Opentrons Flex deck or on the Opentrons Temperature Module. This block acts as a 24 position rack to keep 2mL tubes, 1.5mL tubes, and the NEST 0.5mL tubes at constant temperature. The aluminum block holds temperatures between 4°C and 95°C when used with the Opentrons Temperature Module (GEN2).
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The Opentrons 24-well Aluminum Block can be placed directly on the OT-2/Opentrons Flex deck or on the Opentrons Temperature Module. This block acts as a 24 position rack to keep 2mL tubes, 1.5mL tubes, and the NEST 0.5mL tubes at constant temperature. The aluminum block holds temperatures between 4°C and 95°C when used with the Opentrons Temperature Module (GEN2).
Propargyl-PEG4-CH2CO2H is a linker consisting of a propargyl group with a carboxylic acid group. The carboxylic acid can react with primary amine groups in the presence of activators such as HATU or EDC. The propargyl group can react with azide compounds in Click Chemistry; copper catalyst will be needed. The PEG units help the molecule to have better solubility in aqueous solution. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
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Propargyl-PEG4-CH2CO2H is a linker consisting of a propargyl group with a carboxylic acid group. The carboxylic acid can react with primary amine groups in the presence of activators such as HATU or EDC. The propargyl group can react with azide compounds in Click Chemistry; copper catalyst will be needed. The PEG units help the molecule to have better solubility in aqueous solution. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
Short term stability: 2-8oC, Long term stability: See individual component labels
Stability:
> 2 years under recommended storage conditions
Analyte:
D-Sorbitol, D-Xylitol
Assay Format:
Spectrophotometer, Microplate, Auto-analyser
Detection Method:
Absorbance
Wavelength (nm):
492
Signal Response:
Increase
Linear Range:
1.0 to 20 µg of D-sorbitol (or xylitol) per assay
Limit of Detection:
0.20 mg/L
Reaction Time (min):
~ 15 min
Application examples:
Diabetic foods (e.g. honey, jam and chocolate), dietetic foods, chewing gum, candies, fruit juice (e.g. apple juice), ice-cream, sweets, bakery products (e.g. desserts), marzipan, paper (and cardboard), cosmetics, pharmaceuticals and other materials (e.g. biological cultures, samples, etc.).
Method recognition:
Methods based on this principle have been accepted by IFU and AIJN
The D-Sorbitol/Xylitol test kit for the determination Of D-Sorbitol And Xylitol In Foodstuffs, such as bakery goods, diabetic foods, chocolate, fruit, sweets and more.
Sorbitol is non-cariogenic and finds many dietetic applications, but can cause gastrointestinal problems in adults if large quantities are consumed (10-50 g per day). It has been safely used in processed foods for almost half a century and finds applications in the cosmetics and pharmaceuticals industries.
Note for Content: The number of manual tests per kit can be doubled if all volumes are halved. This can be readily accommodated using the MegaQuantTM Wave Spectrophotometer (D-MQWAVE).
Each vial of sorbitol dehydrogenase is stable for > 2 months at 4oC after dissolution
No wasted diaphorase solution (stable suspension supplied)
Very competitive price (cost per test)
Reagents stable for > 2 years as supplied
Mega-Calc™ software tool is available from our website for hassle-free raw data processing
Standard included
Suitable for manual, microplate and auto-analyser formats
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The D-Sorbitol/Xylitol test kit for the determination Of D-Sorbitol And Xylitol In Foodstuffs, such as bakery goods, diabetic foods, chocolate, fruit, sweets and more.
