COMPARAÇÃO ENTRE AS LINHAGENS COMERCIAIS DE SACCHAROMYCES CEREVISAE CA-11 e FERMIPAN RED NO RENDIMENTO DA FERMENTAÇÃO ALCOÓLICA DO CALDO DE CANA-DE-AÇÚCAR

Abstract

Since the colonization of Brazilian territory, we have learned that during the course of its occupation, the cultivation of sugarcane in colonized territory has been in parallel and has an essential meaning for the Brazilian agricultural sector. When sugarcane is used for ethanol production, after its juice has been extracted manually or mechanically, it undergoes a fermentation process and then the distillation of the fermented juice. In the fermentation process, with the help of the yeast Saccharomyces cerevisiae, the sugars present in the sugarcane juice are converted into ethyl alcohol and other compounds. The yeast added to the sugarcane juice is responsible for the fermentation process. The main objective of the work to be presented is to analyze two different types of broths (Broth extracted from the CTDR sugarcane plant and Broth obtained from the plantations of the São Paulo Sugar Mill), to be fermented with two different brands of yeast (LNF CA-11 and Fermipan RED), with the purpose of defining and analyzing the parameters of efficiency and effectiveness in the alcoholic fermentation of two different types of broths and yeasts. In the methodology used in our study, the analyses of the samples were carried out in the technology laboratories for sugarcane production and unit operations of the Center for Technology and Regional Development (CTDR) of UFPB. With the values ​​obtained during the process, we can state that the fermentation vats had very similar values ​​despite the difference in the raw material of the broth and the brand of yeast. Sample 1 X CA-11 CTDR obtained 3.6ºGL at the end of the process, sample 1X CA-11 obtained 5.3ºGL at the end of the process, sample 2X CA-11 obtained 5.6ºGL at the end of the process, sample 1X FERMIPAN obtained 6.5ºGL at the end of the process and sample 2X FERMIPAN obtained 6.5ºGL at the end of the process. From the total milled sugarcane from the CTDR plantation, a yield of 130 liters or 31.8% was obtained. Also add this conclusion: Fermipan yeast, despite being 7 times cheaper than LNF CA-11, fermented more efficiently than LNF CA-11 yeast. Therefore, the cost-benefit of the entire process with the cheapest yeast becomes more viable in this case. Considering that the CA11 yeast on the last day generated 5.9ºGL while Fermipan generated 6.5ºGL, thus representing a variation of 22.6% according to the comparative parameter ºGL. Of the total sugarcane milled from the CTDR plantation, a yield of 130 liters or 31.8% was obtained.