Effect of ammonia on lysinoalanine formation in proteins by alkali treatment

Alkali treatment of protein in the presence of ammonia formed β-aminoalanine (β-AA). Quantitative determination of β-AA was performed by mass chromatography. When α-lactalbumin or phosvitin was heated in the presence of ammonia under alkali condition, lysinoalanine (LAL) formation was suppressed. It...

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Published inNippon Nōgeikagaku Kaishi Vol. 60; no. 12; pp. 1009 - 1015
Main Authors SHIMIZU, Yoko, MUKAI, Kaori, MATOBA, Teruyoshi, HASEGAWA, Kiyozo, MURATA, Rie
Format Journal Article
LanguageJapanese
Published Japan Society for Bioscience, Biotechnology, and Agrochemistry 1986
Subjects
acide amine
alkali treatment
amino acids
aminoacidos
ammonia
ammoniac
amoniaco
proteinas
proteine
proteins
traitement aux alcalis
tratamiento alcalino
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ISSN0002-1407
1883-6844
DOI10.1271/nogeikagaku1924.60.1009

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Summary:Alkali treatment of protein in the presence of ammonia formed β-aminoalanine (β-AA). Quantitative determination of β-AA was performed by mass chromatography. When α-lactalbumin or phosvitin was heated in the presence of ammonia under alkali condition, lysinoalanine (LAL) formation was suppressed. Its suppression was due to formation of β-AA. This significant suppression of both proteins by ammonia was observed at 55°C and 95°C, but not at 30°C.
Bibliography:Q04
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ISSN:0002-1407
1883-6844
DOI:10.1271/nogeikagaku1924.60.1009