Bromelain from pineapple stem

Name: Bromelain from pineapple stem
Brand: SIGMA

≥3 units/mg protein

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About This Item

CAS Number:

37189-34-7

UNSPSC Code:

12352204

NACRES:

NA.54

EC Number:

253-387-5

MDL number:

MFCD00081423

EC Number:

3.4.22.32 (BRENDA, IUBMB)

Specific activity:

≥3 units/mg protein

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Properties

form

lyophilized powder

Quality Level

200

specific activity

≥3 units/mg protein

composition

Protein, ≥30% biuret

storage temp.

−20°C

Description

Application

Bromelain from pineapple stem has been used:

to evaluate the aqueous micellar two-phase systems composed of ionic liquids as co-surfactants
as a positive control in sodium dodecyl sulfate (SDS) / polyacrylamide gel electrophoresis (PAGE) and in cells proliferation assay
to study its potential analgesic effect and to evaluate its hydrolyzingeffects on proenkephalin (PENK)-derived peptides containing enkephalin sequences

Bromelain may be used to inhibit the biosysnthesis of proinflammatory prostaglandins. It may be used to reduce clotting efficiency. Bromelain, from pineapple stem, has been used to make enzymatic hydrolysates of honeybee-collected pollen .

Biochem/physiol Actions

Bromelain is a cysteine endopeptidase with broad specificity for cleavage of proteins. Bromelain may be from a stem or piece of fruit. Product B4882 is from pineapple stem. Product P3169 (pGlu-Phe-Leu-p-nitroanilide) may be used as a chromogenic substrate for the assay of bromelain.

Preparation Note

The product may be suspended in acetate buffer, pH 4.5 at 1 mg/mL concentration, yielding a hazy, off-white suspension.

Other Notes

One unit will release 1.0 micromole of p-nitrophenol from N-alpha-CBZ-L-Lysine p-nitrophenyl ester per minute at pH 4.6 at 25 °C. One old titrimetric unit (pH 4.5 at 45 °C) is equivalent to approximately 1.7 new units (pH 4.6 at 25 °C).