Open AccessENERGY CULTURES AND SUSTAINABILITY IN BIOFUEL PRODUCTION
Author(s) -
Maria do Socorro Mascarenhas Santos,
Cesar José da Silva,
Sandra Helena da Cruz,
Margareth Batistote,
Cláudia Andréa Lima Cardoso
Publication year - 2022
Publication title -
revista de agricultura neotropical
Language(s) - English
Resource type - Journals
ISSN - 2358-6303
DOI - 10.32404/rean.v9i1.6719
Subject(s) - sweet sorghum , biofuel , food science , ethanol fuel , chemistry , renewable energy , sugar , sorghum , fermentation , microbiology and biotechnology , pulp and paper industry , agronomy , biology , ecology , engineering
Energy cultures are emerging as viable renewable energy sources because they satisfy sustainability requirements. The present study involves a survey regarding the technological characteristics for sugarcane and sweet sorghum energy crops, in addition to their potential for bioethanol production. An exploratory survey was conducted regarding the agronomic and technological characteristics of cane and sorghum. Pre-inmates were produced with YPSAC 5% liquid medium, sterilized and 0.10 grams of yeasts FT858 and Pedra-2 were inoculated and incubated at 30 °C for 10 h at 250 rpm. After the production, the cells were recovered by centrifugation, at 105 rpm, resulting in a 10 mg mg-1 concentration of moist dough. This dough was subsequently inoculated in the fermentative medium consisting of a base of sorghum broth and cane without pH correction with a 22 °Brix. Ethanol was analysed by gas chromatography and amino acids by high-efficiency liquid chromatography. Sorghum broth presented a greater availability of serine, arginine, alanine, threonine, and tryptophan amino acids. Yeast hers presented fermentative efficiency for both substrates, but the largest ethanol production occurred in sorghum broth. The results demonstrated that sugar sorghum may be used for energy purposes.