TP0200
Total Protein Kit, Micro-Lowry, Onishi & Barr Modification
sufficient for ~50 manual assays
Synonym(s):
Total Protein Assay Kit
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About This Item
UNSPSC Code:
12352202
NACRES:
NA.32
Pricing and availability is not currently available.
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description
wavelength 500-750nm
Quality Level
usage
sufficient for ~50 manual assays
protein detection level measuring range
0-1 mg/mL
parameter
18-26 °C temperature
200 μL sample volume
storage temp.
2-8°C
General description
The biuret and Lowry procedures are used for protein determination. The former is widely used for clinical assays. The latter, though more sensitive, is used for investigative work and is limited by poor stability of combined reagents, non-reproducibility of color, especially at low protein concentration, and nonlinear chromogenic response with protein concentration. Ohnishi and Barr modified the biuret reagent for the Lowry procedure, thereby simplifying it while improving the stability of the combined reagent.
Application
Total Protein Kit, Micro-Lowry, Onishi & Barr Modification has been used to determine total soluble protein concentrations:
- in the dialyzates/extracts of gliadins[1]
- in the extracts of flour (Avena sativa and Triticum durum) and seeds (Chenopodium quinoa, Salvia hispanica L.)[2]
- in the stored samples of rat liver microsomal fractions[3]
Principle
Colorimetric, Endpoint.assay. Ohnishi and Barr′s modification of micro Lowry method. According to procedure, dilute biuret reagent reacts with peptide bonds to yield a purple-blue complex, the color of which is intensified by the addition of phenol reagent. Absorbance, read at 550-750 nm, is used to determine results from a standard curve.
Kit Components Also Available Separately
Product No.
Description
SDS
- B3934Biuret reagent, protein detection level 150-1,000 μg/mL 110 mLSDS
- Folin & Ciocalteu’s phenol reagent 5 mL
required but not provided
Product No.
Description
Pricing
Signal Word
Danger
Hazard Statements
Precautionary Statements
Hazard Classifications
Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1
Storage Class Code
8A - Combustible corrosive hazardous materials
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
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A Smialowska et al.
Journal of dairy science, 100(4), 2553-2563 (2017-02-22)
We isolated goat phosphopeptides via calcium and ethanol precipitation from a caseinate digest and investigated their feasibility as an iron-fortification ingredient in nutritional foods. Goat tryptic-digested phosphopeptides could bind 54.37 ± 0.50 mg of Fe/g of protein compared with goat
Jose Laparra et al.
Oncotarget, 10(7), 760-772 (2019-02-19)
Imbalances in innate immunity and the activity of innate immune cells are implicated in the development of hepatocellular carcinoma (HCC). Plant seeds are good sources of protease inhibitors, which can have a significant influence on human health disorders, especially in
David Kessel
Photochemistry and photobiology, 90(5), 1211-1213 (2014-04-26)
When the initial effect of photodynamic therapy (PDT) involves mitochondrial photodamage, an early effect is loss of the mitochondrial membrane potential (ΔΨm ). Using murine hepatoma 1c1c7 cells and a photosensitizing agent known to target mitochondria, we examined loss of
Bartosz Fotschki et al.
Molecules (Basel, Switzerland), 23(9) (2018-08-24)
The aim of this in vitro study was to examine the effect of raspberry polyphenolic extract on the immune-metabolic molecular mechanisms activated by obesity-related signals in hepatocytes (HB-8965®). Alterations in endosomal/lysosomal activity (neutral red uptake assay, NR), the expression of
Sylvie Skalickova et al.
Frontiers in nutrition, 9, 838963-838963 (2022-03-15)
Peas are prospectively beneficial legumes in the human diet, and especially in a vegan and vegetarian diet, due to their high content of proteins and starch. Their frequent lack of appeal in human nutrition can be caused by their bloating
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