FOOD SCIENCE ›› 2010, Vol. 31 ›› Issue (18 ): 445-449.doi: 10.7506/spkx1002-6630-201018104

• Technology Application • Previous Articles     Next Articles

Preparation of Fermented Yacon (Smallanthus sonchifolius) Beverage using Bifidobacterium Strains from Centenarians Faeces

WANG Yang,LIU Ning-jing,ZHENG Hai-tao,WANG Rui,LIU Li-sha,LU Ming-yang,LI Ping-lan*   

  1. Key Laboratory of Function Dairy, Co-constructed by Ministry of Education and Beijing City, College of Food Science and Nutritional
    Engineering, China Agricultural University, Beijing 100083, China
  • Received:2010-06-23 Online:2010-09-25 Published:2010-12-29
  • Contact: LI Ping-lan* E-mail:lipinglan420@126.com

Abstract:

The yacon (Smallanthus sonchifolius) juice was fermented with Bifidobacterium strains derived from centenarians faeces (Bifidobacterium animalis 01) to prepare a functional beverage. The effects of volume ratio of yacon juice, concentration of lysine and ascorbic acid on the viable bifidobacteria numbers in the fermentation broth were studied by conducting single factor tests. Subsequently, a central composite design involving the above 3 factors at 5 levels was employed and analyzed by response surface method to optimize the fermentation processing. Results showed that the optimum volume ratio of juice was 50%, and optimum concentration of lysine and ascorbic acid was 0.22%, 0.21% respectively. The viable cell numbers of Bifidobacterium animalis 01 at optimal formula could reach up to (8.23±0.03) lg (CFU/mL), and maintained above 106 CFU/ mL within 12 days storage at 4 ℃.

Key words: Bifidobacterium animal, Smallanthus sonchifolius, fermented beverage, response surface methodology

CLC Number: