Microwave-based Kjeldahl method

Details Microwave-based Kjeldahl method Microwave-based Kjeldahl method

1989-01-25

1990-08-07

Warden, Robert J.

Chemistry: analytical and immunological testing

Including sample preparation

Digestion or removing interfering materials

436 79, 436 80, 436 81, 436 84, 436115, G01N 128

Patent

active

049467972

ABSTRACT:
A rapid, microwave-based Kjeldahl digestion method wherein microwave energy is applied to an acid/sample mixture at the beginning of, and thereafter during the digestion. After the application of microwave energy is discontinued, the digestate is diluted by pulsed addition of water, followed by continuous addition of water. Dilution in this manner prevents a sudden surge in gas evolution, and eliminates the need for an intervening cooling step, thereby reducing processing time. Also provided is a method for fat separation from a fat-containing protein sample during the digestion.

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