Biotransformação de terpenos em compostos de aroma. / Biotransformation of terpene in falvour compounds.

AUTOR(ES)
DATA DE PUBLICAÇÃO

2004

RESUMO

Samples of soil and water were collected in the Northeast of Brazil, in the Interior of the state of Alagoas; from rural; and in the Coast Area of the State of Alagoas and of the city of Aracaju. The fruits investigated were the guava; acerola; pink mango and espada mangos; passion fruit; tamarino; graviola; star fruit; sapoti; papaya; umbu (-caja) and seriguela. They were exposed to the environment for 7 days and inoculated in flask containing liquid medium YM and incubated for 96 hours at 30oC. We obtain 669 microorganisms, being 166 mould, 180 yeasts and 323 bacterias from 368 samples. We used 36 fungi for the biotransformation using citronellol, geraniol, linallol and limonene as the substrates. In the biotransformation of the citronelol by the 36 fungi, the rose oxide was obtained in the biotransformation of limonene we obtained alpha-terpineol and carvone; in the selection of the biotransformação of geraniol, the products were 4-methyl-3-penten-1-ol and the 6 methyl-5-hepten-2-ona; and in the biotransformation of linallol we found the oxides of the linalol (furane), alpha-terpineol and geraniol. The induction of 3 fungi with citronelol and rose oxide showed in the source an increase of the concentration of rose oxide obtained by the biotransformation of the citronelol of up to 10 times more. Eight fungi when cultivated in the medium of culture liquid no. 4, without source of carbon, and with the addition of 0,3% (v/v). They were capable of forming the epoxide, 3,7-dimetil-6,7-epoxy-1-octanol, and the diol, 3,7-dimetil-5-octeno-1,7-diol. After 144h of studied analysis rose oxide was not metabolized after the end of biotransformation of citronellol after applying fungi 2038 (no. 36). This shows that fungi 2038 (no. 36) did not produce the biotransformation as found in the use of Cystoderma carcharias. The 2 microorganism selected here were capable of accomplishing the formation of rose oxide by proposed for Cystoderma carcharias, different form that proposed for Botrytis cinerea.

ASSUNTO(S)

rose oxidos biotransformation rosa oxids limonene biotransformação (metabolismo) limoneno

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