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Lactose/Sucrose/D-Glucose Assay Kit

Product code: K-LACSU

100 assays of each per kit

Prices exclude VAT

This product has been discontinued

Content: 100 assays of each per kit
Shipping Temperature: Ambient
Storage Temperature: Short term stability: 2-8oC,
Long term stability: See individual component labels
Stability: > 2 years under recommended storage conditions
Analyte: D-Glucose, Lactose, Sucrose
Assay Format: Spectrophotometer
Detection Method: Absorbance
Wavelength (nm): 510
Signal Response: Increase
Limit of Detection: 100 mg/L
Reaction Time (min): ~ 60 min
Application examples: Flours, beverages, dairy products, milk, foodstuffs containing milk, cosmetics, pharmaceuticals and other materials (e.g. biological cultures, samples, etc.).
Method recognition: Used and accepted in food analysis

This product has been discontinued (read more).

The Lactose/Sucrose/D-Glucose assay kit is suitable for the measurement and analysis of sucrose, lactose and D-glucose in flour mixtures and other materials.

Explore our full range of mono/disaccharide assay kits.

Scheme-K-LACSU LACSU Megazyme

  • Very competitive price (cost per test) 
  • All reagents stable for > 12 months after preparation 
  • Simple format 
  • Very specific 
  • Rapid reaction 
  • Mega-Calc™ software tool is available from our website for hassle-free raw data processing 
  • Standard included
Certificate of Analysis
Safety Data Sheet
FAQs Assay Protocol Data Calculator

Polylactose exhibits prebiotic activity and reduces adiposity and nonalcoholic fatty liver disease in rats fed a high-fat diet.

Abernathy, B. E., Schoenfuss, T. C., Bailey, A. S. & Gallaher, D. D. (2021). The Journal of Nutrition, 151(2), 352-360.

Background: Prebiotic dietary fibers change the intestinal microbiome favorably and provide a health benefit to the host. Objectives: Polylactose is a novel fiber, synthesized by extrusion of lactose. We evaluated its prebiotic activity by determining its fermentability, effect on the microbiota, and effects on adiposity and liver lipids in a diet-induced obesity animal model. Methods: Male Wistar rats (4-5 wk old) were fed normal-fat (NF, 25% fat energy) or high-fat (HF, 51% fat energy) diets containing different fibers (6% fiber of interest and 3% cellulose, by weight), including cellulose (NFC and HFC, negative and positive controls, respectively), polylactose (HFPL), lactose matched to residual lactose in the HFPL diet, and 2 established prebiotic fibers: polydextrose (HFPD) and fructooligosaccharide (HFFOS). After 10 wk of feeding, organs were harvested and cecal contents collected. Results: HFPL animals had greater cecum weight (3 times greater than HFC) and lower cecal pH (∼1 pH unit lower than HFC) than all other groups, suggesting that polylactose is more fermentable than other prebiotic fibers (HFPD, HFFOS; P < 0.05). HFPL animals also had increased taxonomic abundance of the probiotic species Bifidobacterium in the cecum relative to all other groups (P < 0.05). Epididymal fat pad weight was significantly decreased in the HFPL group (29% decrease compared with HFC) compared with all other HF groups (P < 0.05) and did not differ from the NFC group. Liver lipids and cholesterol were reduced in HFPL animals when compared with HFC animals (P < 0.05). Conclusions: Polylactose is a fermentable fiber that elicits a beneficial change in the gut microbiota as well as reducing adiposity in rats fed HF diets. These effects of polylactose were greater than those of 2 established prebiotics, fructooligosaccharide and polydextrose, suggesting that polylactose is a potent prebiotic.

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Construction of a food-grade cell surface display system for Lactobacillus casei.

Qin, J., Wang, X., Kong, J., Ma, C. & Xu, P. (2014). Microbiological Research, 169(9-10), 733-740.

In this study, a food-grade cell surface display host/vector system for Lactobacillus casei was constructed. The food-grade host L. casei Q-5 was a lactose-deficient derivative of L. casei ATCC 334 obtained by plasmid elimination. The food-grade cell surface display vector was constructed based on safe DNA elements from lactic acid bacteria containing the following: pSH71 replicon from Lactococcus lactis, lactose metabolism genes from L. casei ATCC 334 as complementation markers, and surface layer protein gene from Lactobacillus acidophilus ATCC 4356 for cell surface display. The feasibility of the new host/vector system was verified by the expression of green fluorescent protein (GFP) on L. casei. Laser scanning confocal microscopy and immunofluorescence analysis using anti-GFP antibody confirmed that GFP was anchored on the surface of the recombinant cells. The stability of recombinant L. casei cells in artificial gastrointestinal conditions was verified, which is beneficial for oral vaccination applications. These results indicate that the food-grade host/vector system can be an excellent antigen delivery vehicle in oral vaccine construction.

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Polymerization of lactose by twin-screw extrusion to produce indigestible oligosaccharides.

Tremaine, A. J., Reid, E. M., Tyl, C. E. & Schoenfuss, T. C. (2014). International Dairy Journal, 36(1), 74-81.

Soluble dietary fiber is a growing food ingredient market. Twin-screw extrusion of lactose with an acid catalyst has been reported as a way to polymerize lactose to oligomers which are indigestible and analyze as dietary fiber. Lactose was dry blended with citric acid at two different concentrations, 1 and 2%. Glucose was added to raw mixes at 0, 10, or 20% (w/w). Samples with 2% citric acid yielded a higher concentration of indigestible oligosaccharides (52.3–59.8%, w/w) than 1% citric acid samples (37.1–49.9%). Glucose did not affect the yield. Glucose addition was beneficial and reduced the motor torque and specific mechanical energy of the extruder, and extruded products were lighter in color. The generated oligomers had a degree of polymerization that ranged from 3 to 5, as determined by mass spectrometry. Testing if the oligomers confer a beneficial effect (to be classified as dietary fiber), is still required.

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Safety Information
Symbol : GHS05, GHS08
Signal Word : Danger
Hazard Statements : H314, H315, H319, H334
Precautionary Statements : P260, P261, P264, P280, P284, P301+P330+P331, P302+P352, P303+P361+P353, P304+P340, P342+P311, P501
Safety Data Sheet
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