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TERCEIRÂ REUNIÄO BRASILEIRA CIENCIA DO SOLO

TERCEIRÂ REUNIÄO BRASILEIRA CIENCIA DO SOLO

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ANAIS DA TERCEIRA REUNIÂO <strong>BRASILEIRA</strong> DE CIÊNCIA <strong>DO</strong> <strong>SOLO</strong> 185»<br />

23 — Aminos-âcidos :<br />

a) Histidina — alfa amino beta imidazou proprônico —<br />

C — NH<br />

• II CH<br />

C — N //<br />

CH. NH2COOH<br />

b) Lisina — âcido alfa-amino caprônico;<br />

24 — Amidas — presente de 16 a 30 % nos produtos de hidrólisedas<br />

protenas.<br />

25 — Animas:<br />

a) Tri-metilanima (CH3) 3 N, isolado por SHOREY;<br />

b) Cholina — beta tri-metil-amônio etanol, isolado por SHOREY<br />

c) Creatina<br />

Isolado no alcool<br />

dilu.do.<br />

/NH,<br />

C = NH<br />

\ /CH3<br />

\N/<br />

\<br />

\CH2CO2H<br />

26 — Bases purinicas:<br />

a) Xantina (2.6 de oxi-purina), isolado no extrato alcalino;<br />

HN — C = O<br />

O = C — C — N<br />

HN — C — N / CH<br />

&) Hipoxantina (6.oxi-purina)<br />

HN — C = O<br />

HC C — NH<br />

ii II \GH<br />

N — C — N /<br />

c) Adeina (6 amino purina)<br />

N = C NH2<br />

HC C — NH<br />

|| ||<br />

HN — C — N/<br />

d) Guaina (2amino— 6 oxipurina)<br />

HN — CO<br />

H2 NC C — NH<br />

N — C — N/ CH

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