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Master's Dissertation
DOI
10.11606/D.11.2018.tde-20181127-160258
Document
Author
Full name
Jorge Jose Correa Lopes
Institute/School/College
Knowledge Area
Date of Defense
Published
Piracicaba, 1989
Supervisor
Title in Portuguese
Balanço de nutrientes minerais no processo Melle-Boinot de fermentação alcoólica
Keywords in Portuguese

BALANÇO DE NUTRIENTES
DESTILARIAS
ETANOL
FERMENTAÇÃO ALCOÓLICA
LEVEDURAS
PRODUÇÃO
Abstract in Portuguese
Neste trabalho, procurou-se verificar o balanço de dez nutrientes, citados como importantes para as leveduras, dentro do processo Melle-Boinot de fermentação alcoólica, utilizado na quase totalidade das destilarias produtoras de álcool etílico do Brasil. Com este objetivo foi instalado um ensaio experimental, em escala industrial, utilizando-se 14 dornas de fermentação com 12 ciclos consecutivos por dorna. A interpretação e análise dos resultados obtidos permitiram as seguintes principais conclusões: - o nutriente em maior concentração no mosto foi o potássio (405, 96 kg/ciclo), seguido pelo cálcio (127,09 kg/ciclo) e nitrogênio (94,47 kg/ciclo); - em menores teores no mosto aparecem o cobre (0,16 kg/ciclo), o zinco (0,20 kg/ciclo) e o manganês (0,79 kg/ciclo); - nos lêvedos, o nitrogênio com 439,49 kg/ciclo foi o principal elemento, confirmando a sua grande importância para as células de leveduras e, consequentemente para todo o processo fermentativo; - no vinho, os nutrientes em maiores concentrações foram o nitrogênio (547,16 kg/ciclo), o potássio (536,25 kg/ciclo) e o cálcio (147,81 kg/ciclo); - o vinho centrifugado apresentou o potássio (468,28 kg/ciclo) com teor mais elevado que os demais elementos estudados
Title in English
not available
Abstract in English
In this work, a nutrient balance was carried out to verify the amount of ten mineral elements considered as the most important in the Melle-Boinot alcoholic fermentation process wich is utilized in most ethanol distillaries in Brazil. This survey was carried out, in industrial scale, utilizing 14 fermentation vats with 12 consecutive cycles per vat. The results of this survey allowed the following conclusions: - the nutrient with highest concentration in the must was the potassium (405.96 kg/cycle an overall average obtained in the vats surveyed), followed by calcium (127.09 kg/cycle) and nitrogen (94.47 kg/cycle), whereas copper, zinc and manganese appeared in minor quantity, (0.16, 0.20 and 0.79 kg/cycle, respectively); - in the yeast, the nitrogen appears an the main element (439.49 kg/cycle), confirming its great importance to yeast cells, and consequently to the whole fermentation process; - in the wine, high amount of nitrogen, potassium and calcium (547.16, 536.25, and 147.81 kg/cycle, respectively were observed; - in the centrifuged wine, the potassium, with 468.28 kg/cycle, appeared in higher amount than the other elements studied
 
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Publishing Date
2018-11-27
 
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