An inexpensive procedure for the rapid determination of total nitrogen in multiple biological samples | Zendy

SylvesterBradley Roger | Zendy; Howitt Stephen G. | Zendy

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An inexpensive procedure for the rapid determination of total nitrogen in multiple biological samples

Author(s) -

SylvesterBradley Roger,

Howitt Stephen G.

Publication year - 1977

Publication title -

journal of the science of food and agriculture

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.782

H-Index - 142

eISSN - 1097-0010

pISSN - 0022-5142

DOI - 10.1002/jsfa.2740280315

Subject(s) - kjeldahl method , indophenol , nitrogen , chemistry , chromatography , ammonia , digestion (alchemy) , environmental chemistry , biochemistry , organic chemistry

A method is described for rapid, total nitrogen determinations on samples of biological materials. A modification of the indophenol blue colour reaction is used to determine ammonia released by a semi‐micro Kjeldahl digestion method which uses equipment which is cheap to construct. Using the procedure one worker can analyse 40 samples per hour. Recovery of nitrogen from a standard lysine solution was 98.3 %.

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