QuantiQuik™ L-Glutamate Quick Test Strips

Application

• For rapid, direct determination of L-Glutamate (monosodium glutamate or MSG) concentrations in food and beverage samples as well as biological samples. Note: Requires access to pipettes for dilution. We offer pipettes that can be purchased separately: 20 uL Pipettes (Catalog: TP-20) or 100 uL Pipettes. (Catalog: TP-100)

Key Features

• Fast and sensitive. Use of 20 or 100 µL sample. Semi-quantitative measurement between 0-300 mg/L (undiluted) L-Glutamate.
• Convenient. No extra equipment is required.
• Sample treatment and assay can be performed in under 15 minutes.

Method

• Visual

Samples

• Soups, sauces, milk, etc

Species

• All

Procedure

• Approximately 15 min

Size

• 10 tests

Shelf Life

• 6 months

More Details

What samples have you tested?

The strips have been tested on instant soup broth, restaurant Pho broth, soy sauce, fish sauce, 2% milk, plasma, serum, and urine.

What is the recommended dilution for samples with low levels of Glutamate?

For samples with low levels of Glutamate (e.g. plasma, urine, serum, etc) we recommend diluting samples 2×. To do this, carefully transfer 400 µL of sample to the Sample Development Tube. If a pipetteman is not available, we have 400 µL single use transfer pipettes that can be purchased separately (Cat No. TP400). Please note that samples need to have at least 0.1 – 0.2 mM Glutamate to be detected by the strip.

My sample turns the strip very dark purple, how can I determine the L-glutamate concentration?

Very dark purple indicates that the diluted sample concentration is greater than 2 mM. To obtain a more accurate concentration, the sample should be further diluted and retested. For example, if the sample was diluted 5×, try diluting 21×.

I don’t have access to a pipetteman. How can I accurately measure out my samples?

We offer exact volume transfer pipettes as an accessory. For samples requiring a 21× dilution, order the 20 µL transfer pipettes (TP20). For samples requiring a 5× dilution, order the 100 µL transfer pipettes (TP100). For samples requiring a 210× dilution, order the 20 µL and 100 µL transfer pipettes.

The color seen on my strip appears to be a different shade than the color chart on the strip bag. What could be the problem?

Fluorescent lights can have a green cast so it is best to view strips under incandescent or natural lighting for optimal color matching.

Can I store unused reagents for future use?

Yes, unused reagents can be stored according to the assay protocol. The strips should be kept in a dry, cool location and protected from light.

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If you or your labs do not have the equipment or scientists necessary to run this assay, BioAssay Systems can perform the service for you.

– Fast turnaround
– Quality data
– Low cost

Please email or call 1-510-782-9988 x 2 to discuss your projects.