%0 Journal Article
%T Sugarcane Molasse and Whey as Additives in the Silage of Lemongrass (Cymbopogon citratus [DC.] Stapf) Leaves Melaza de Ca a de Az迆car y Suero de Leche como Aditivos en el Ensilaje de Hojas de Zacate de Lim車n (Cymbopogon citratus [DC.] Stapf)
%A Luc赤a Mar赤a Cristina Ventura-Canseco
%A Jos谷 Alfredo Mendoza Nunez
%A Miguel Abud-Archila
%A Maria 芍ngela Oliva-Llaven
%J Chilean Journal of Agricultural Research
%D 2012
%I 
%X After extraction of essential oil from lemongrass (Cymbopogon citratus [DC.] Stapf) leaves by steam distillation (heat treatment), large amounts of organic wastes are obtained. This by-product could easily be used as animal feed. The potential of sugarcane molasse and whey as additives to ensile lemongrass leaves was investigated. The vegetative material was obtained after essential oils were extracted from lemongrass leaves with steam distillation. Lemongrass leaves were chopped, mixed with sugarcane molasse and whey, placed in cylindrical plastic containers, hermetically closed. The experimental design for pH optimization was a response surface 3-level factorial design 32 with three replicates. Sugarcane molasse at 5, 10 and 15% (w/w) and whey at 20, 25 and 30% (w/w) were used. The pH of the silage decreased significantly in each treatment, but it was faster when sugarcane molasse was added. The lactic acid concentration was 2.8 g kg-1 DM in silage amended with 15% molasse plus 25% whey and was higher than in silage supplemented with commercial additive after 15 d. In conclusion, it was shown that lemongrass leaves obtained as by product after extracting essential oils can be effectively ensiled with whey and sugarcane molasse as additives inducing a faster production of lactic acid. Despu谷s de la extracci車n del aceite esencial de zacate lim車n (Cymbopogon citratus [DC.] Stapf) por destilaci車n con vapor (tratamiento t谷rmico) se obtiene un residuo. Este residuo podr赤a ser utilizado para alimentaci車n animal. El potencial de la melaza de ca a y suero de leche como aditivos para ensilar hojas de zacate lim車n fue investigado. El material vegetal se obtuvo despu谷s que los aceites esenciales se extrajeron de las hojas de zacate lim車n usando destilaci車n con vapor. Las hojas de zacate lim車n se picaron, mezclaron con melaza de ca a y suero de leche y se colocaron en recipientes cil赤ndricos de pl芍stico y se cerraron herm谷ticamente. El dise o experimental para la optimizaci車n del pH fue uno de superficie de respuesta factorial 32 con tres repeticiones. Se utiliz車 melaza de ca a de az迆car 5, 10 y 15% (p/p) y suero de leche 20, 25 y 30% (p/p). Las diferentes mezclas se caracterizaron qu赤micamente y se colocaron en recipientes de pl芍stico herm谷ticamente cerrados. El pH del ensilaje se redujo significativamente en cada uno de los tratamientos, pero la disminuci車n del pH fue m芍s r芍pida cuando se a adi車 melaza de cana. La concentraci車n de 芍cido l芍ctico fue de 2,8 g kg-1 MS en el ensilaje adicionado con 15% de melaza m芍s 25% de suero de leche. La concentraci車n de 芍cido l
%K calidad del ensilado
%K metodolog赤a de superficie de respuesta
%K pH
%K 芍cido l芍ctico
%K Silage quality
%K response surface methodology
%K pH
%K lactic acid
%U http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392012000100014