SDS and specification documents are available on each product page. They are also available from HERE. ⇒

To avoid moisture absorption of the enzyme powder, please allow it to return to room temperature in a sealed state before use. (Recommended conditions: around 25°C, humidity below 55%)

Please store at or below -20°C.

An example of activity measurement: The oxidase activity is assayed in a reaction mixture containing fructosyl valine as a substrate, peroxidase, 4-aminoantipyrine and TOOS. The prouction of hydrogen peroxide is colorimetrically evaluated by measuring absorbance at 555 nm.

It shows 100% activity toward ε-fructosyl lysine (εF-Lys), 65% toward fructosyl valine (F-Val), and 30% toward fructosyl glycine (F-Gly).

Trehalose is used as a stabilizer.

It is stable in liquid form below 30°C (Fig.4) and remains stable at 25°C for at least two weeks (Fig.5). In powder form, it remains stable at 37°C for at least three weeks (Fig.6).

The optimal pH is 8.0–8.5, and the optimal temperature is 35–40°C.

The molecular weight is approximately 45 kDa (gel filtration), and it exhibits a monomeric structure of 50 kDa (SDS-PAGE).

It is useful for the determination of glycated albumin, an indicator for diabetes diagnosis and blood glucose control, in clinical analysis.