What vegetables contain peroxidase?

Foods containing peroxidase such as radishes, turnips, cabbage, cauliflower, horseradish, uncooked broccoli, cucumbers, mushrooms, green beans, artichokes and melons can generate falsely positive color reactions. Some kit manufacturers include alcohol in the developer to denature plant peroxidases.

Which foods contain the enzyme peroxidase?

The peroxidase enzyme activities of some fresh vegetables (cabbage, leeks, carrot, spinach, celery, squash, potatoes, onions and green beans) were determined. The peroxidase activities of cabbage and green beans were high. Onions showed very little peroxidase activity.

Does lettuce contain peroxidase?

Peroxidase activity was characterized in lettuce (Lactuca sativa L.) leaf tissue. Assays of activity in tissue extracts revealed pH optima of 4.5, 6.0, 5.5 to 6.0, and 6.0 to 6.5 for the substrates tetramethylbenzidine, guaiacol, caffeic acid, and chlorogenic acid, respectively.

Where can peroxidase be found?

Peroxidase activity is found in exocrine secretions including milk, tears, and saliva, as well as in vaginal fluid (Table 1), mostly derived from enzymes synthesized in the glands, but some activity derives from polymorphonuclear leukocytes (myeloperoxidase; MPO) or possibly eosinophils (eosinophil peroxidase; EPO).

Does potato contain peroxidase?

Peroxidase activities in different cultivars and parts of sweet potato. In the pre-screening of peroxidase in different plant species, it was found the sweet potato had high peroxidase activity. The enzyme activity in different cultivars and organs of sweet potato were analyzed.

Does spinach contain peroxidase?

In this study, the crude extract of water spinach leaves was known to contain peroxidase enzyme which was active toward hydrogen peroxide. A fraction of extract yielded from differential fractionation using ammonium sulfate at concentration 40-65% (F4) was known to be the most active.

What is the reaction of peroxidase?

3 Peroxidases. Peroxidases, also known as catalases, are also an oxidoreductase class of enzymes, which catalyze oxidoreduction reactions. The peroxidase enzyme catalyzes the decomposition of hydrogen peroxide into water and molecular oxygen (see illustration). Catalase is a haem-containing enzyme.

What is the meaning of peroxidase?

: an enzyme that catalyzes the oxidation of various substances by peroxides.

What does peroxidase do in the body?

Peroxidase is an enzyme found in a wide variety of organisms, from plants to humans to bacteria. Its function is to break down hydrogen peroxide (H2O2), which is one of the toxins produced as a byproduct of using oxygen for respiration.

Does peroxidase produce oxygen?

The rate of oxygen production by peroxidases was greatly enhanced by the addition of ABTS [2,2′-azino-bis-(3-ethylbenzthiazoline-6-sulfonic acid)] or chlorpromazine, both of which are oxidized to cation radicals by peroxidases.

Does cabbage contain peroxidase?

What kind of vegetables have high peroxidase activity?

The peroxidase enzyme activities of some fresh vegetables (cabbage, leeks, carrot, spinach, celery, squash, potatoes, onions and green beans) were determined. The peroxidase activities of cabbage and green beans were high.

What are the peroxidase activities of green beans?

The peroxidase activities of cabbage and green beans were high. Onions showed very little peroxidase activity. The vegetables were blanched in hot water at 75°G, 85° and 95°C. Peroxidase inactivation was faster at the higher temperature blanch.

What kind of enzymes are found in vegetables?

The peroxidase enzyme activity of some vegetables and its resistance to heat. Abstract. The peroxidase enzyme activities of some fresh vegetables (cabbage, leeks, carrot, spinach, celery, squash, potatoes, onions and green beans) were determined. The peroxidase activities of cabbage and green beans were high.

What kind of peroxidase enzyme does onion have?

Onions showed very little peroxidase activity. The vegetables were blanched in hot water at 75°G, 85° and 95°C. Peroxidase inactivation was faster at the higher temperature blanch.