American Journal of Food Technology1557-45711557-458XAcademic Journals Inc.10.3923/ajft.2018.57.65Lactococcus lactis in Presence of Yacon (Smallanthus sonchifolius) as a Prebiotic]]>VillarrAlejandra Sanín Navia PorrasDiana Paola Serna JiménezJohanna Andrea 22018132Background and Objectives: Due to malnutrition and to the raise of non-communicable diseases, agrifood industry research has entered the development of functional foods; the “Yacon” is an Andean tuber with a prebiotic potential. The objective was to evaluate the effect of spray drying on the viability of Lactococcus lactis ATCC19435 in the presence of “Yacon” as prebiotic. Materials and Methods: Initially, the prebiotic effect of Yacon on L. lactis was studied by making a growth curve in Yacon’s nectar and by modelling data through the ComBase®; then L. lactis were spray dried in Yacon’s nectar analyzing the influence of the entrance temperature and the maltodextrin concentration. The micro-organism’s survival, water activity and moisture content were measured. Afterwards, the spray-drying effect over the bacteria stability in in vitro simulated gastrointestinal was tested. Results: The results show that L. lactis used fructo-oligosaccharides present in Yacon as a carbon source for its growth and metabolism with a viable population in a 92-98%, growth curve that fit Baranyi and Roberts model. Besides, it was possible to observe that the spray-drying technique used at 120°C-20% maltodextrin had a statistically significant effect over the bacteria stability in simulated gastric juice and bile fluids. Conclusion: Consequently, it is possible to infer that “Yacon” has a great potential to become a prebiotic product since a high fructo-oligosaccharides content was found both in the fresh root and in the powder; this is why it is cataloged as a promissory prebiotic food; beside, if probiotic bacteria such as L. lactis is added, it might be considered as a functional symbiotic powder food.]]>FAO.,20152015WHO.,20152015WHO.,20152015Nielsen,20152015Roberfroid, M.B.,2000711682S1687SOMG.,20082008De las Cagigas Reig, A.L. and J.B. Anesto,2002166368Habib, N.C., S.M. Honore, S.B. Genta and S.S. Sanchez,2011Smallanthus sonchifolius (yacon) roots on diabetic rats: Biochemical approach.]]>1943139Torrez, D.L.L.,2007793106Manrique, I., A. Parraga and M. Hermann,2005Pages: 31Pages: 31Hermann, M. and J. Heller,19971997Shi, Q., Y. Zheng and Y. Zhao,2015119727735FAO. and WHO.,20022002Liu, H., J. Gong, D. Chabot, S.S. Miller and S.W. Cui et al.,201551459467Da Rosa, C.G., C.D. Borges, R.C. Zambiazi, J.K. 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