Listeria monocytogenes have emerged as significant foodborne pathogens that pose a serious public health problem. As the causative agent of Listeriosis, L. monocytogenes has the highest rate of fatality rate among all foodborne pathogens. L. monocytogenes is a facultatively intracellular, Gram-positive bacterium that could survive high and low temperatures, low pH. It is a rare causative agent of mastitis in cow. However, due to its ability to resist various food processing technologies as well as to grow at low temperature, L. monocytogenes is know to be associated with both raw and pasteurized milk, as well as dairy products such as cheese. As little as 1000 organisms may cause the disease with pregnant, new-born, and immunocompromised individuals the most susceptible.
Listeria monocytogenes TaqMan PCR Kit, 100 reactions
Listeria monocytogenes TaqMan PCR Probe/Primer Set and Controls, 100 reactions
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Storage Conditions and Product Stability
All kit components can be stored for 2 years after the date of production without showing any reduction in performance.
All kit components should be stored at -20°C upon arrival. Repeated thawing and freezing (> 2 x) of the Master Mix and Positive Control should be avoided, as this may affect the performance of the assay. If the reagents are to be used only intermittently, they should be frozen in aliquots.
| Component | Cat. TM30450 (100 preps) | Cat. TM30410 (100 preps) |
|---|---|---|
| MDx TaqMan 2X PCR Master Mix | 2 x 700 μL | – |
| Listeria monocytogenes Primer & Probe Mix | 280 μL | 280 μL |
| Listeria monocytogenes Positive Control | 150 μL | 150 μL |
| Nuclease-Free Water (Negative Control) | 1.25 mL | 1.25 mL |
| Product Insert | 1 | 1 |
Introduction
The Kit integrates phenol/guanidine-based lysis and silica membrane purification of total RNA. MagZol Reagent, included in the kits, is a monophasic solution of phenol and guanidine thiocyanate, designed to facilitate lysis of samples and inhibit RNases. The high lysis efficiency of the reagent and the subsequent removal of contaminants by organic phase extraction enable extracting up to 200μg total purified RNA from less than 100mg animal, plant, fungal samples,bacteria, cells and other samples.
Specifications
| Features | Specifications |
| Main Functions | Isolation total RNA (include miRNA) from 100mg lipid tissue, tissue, cell, plant, body fluids using columns and MagZol reagent |
| Applications | RT-PCR, qRT-PCR, Northern hybridization, second generation sequencing |
| Purification method | Mini spin column |
| Purification technology | Silica technology, acid phenol / guanidine extraction technology (MagZol pretreatment technology) |
| Process method | Manual (centrifugation or vacuum) |
| Sample type | Animal tissue, muscle fiber containing tissue,adipose tissue, cultured cells, lymphocytes, simple plants and other biological samples |
| Sample amount | Animal tissue sample: 1-60mg (spleen≤ 10mg)Cultured cells: 5 x 106 Plant leaves: 50-100mg |
| Yield | 2-200μg |
| Elution volume | ≥50μl |
| Time per run | ≤30 minutes（1-24 samples） |
| Liquid carrying volume per column | 800µl |
| Binding yield of column | 100µg |
Tissue samples (10-100mg) are homogenized in MagZol Reagent. After addition of chloroform, the homogenate is separated into aqueous and organic phases by centrifugation. The upper, aqueous phase is extracted, and ethanol is added to provide appropriate binding conditions. The sample is then applied to the spin column, where the total RNA (up to 100µg) binds to the membrane and phenol and other contaminants are efficiently washed away. High-quality RNA is then eluted in 30-100µl of RNase-free water.
Advantages
Kit Contents
| Contents | R413002 | D413003 |
| Purification Times | 50 Preps | 250 Preps |
| HiPure RNA Mini Columns | 50 | 250 |
| 2ml Collection Tubes | 50 | 250 |
| MagZol Reagent | 60 ml | 270 ml |
| Buffer RW1 | 50 ml | 200 ml |
| Buffer RW2* | 20 ml | 50 ml |
| RNase Free Water | 10 ml | 30 ml |
Storage and Stability
MagZol Reagent should be stored at 2-8°C upon arrival. However, short-term storage (up to 12 weeks) at room temperature (15-25°C) does not affect its performance. The remaining kit components can be stored at room temperature (15-25°C) and are stable for at least 18 months under these conditions.
Experiment Data
The Kit integrates phenol/guanidine-based lysis and silica membrane purification of total RNA. MagZol Reagent, included in the kits, is a monophasic solution of phenol and guanidine thiocyanate, designed to facilitate lysis of samples and inhibit RNases. The high lysis efficiency of the reagent and the subsequent removal of contaminants by organic phase extraction enable extracting up to 200μg total purified RNA from less than 100mg animal, plant, fungal samples,bacteria, cells and other samples.
Ractopamine ELISA Kit
Ractopamine ELISA Test Kit is a competitive enzyme immunoassay for detection in meat, feed, liver, kidney, milk, urine, serum and plasma. Ractopamine has been banned for use as a livestock growth promoter in many countries around the world. To prevent ractopamine residues from entering the food chain, both producers and government surveillance agencies need technologies and methods that can provide rapid, accurate and reliable detection at specific sensitivities. This kit enables government agencies, food manufacturers, as well as quality assurance organizations, to detect ractopamine as low as 0.1 ng/g or ppb level in a variety of sample types.