FOOD SCIENCE ›› 2006, Vol. 27 ›› Issue (11): 188-191.

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Bacteriostasis of Absorbent Resin Extracts of Sweet Potato Stem and Leaf

 ZHANG  Yu,   Gao-Yin-Yu,   Ji-Ling   

  1. 1.Key Laboratory of Food Science,Ministry of Education,Nanchang University,Nanchang 330047,China;2.Dalian Product Quality Supervision and Testing Institute,Dalian 116021,China
  • Online:2006-11-15 Published:2011-11-28

Abstract:  The 70% ethanol extract of SPSL was separated by AB-8 absorbent resin with elution of gradient of ethanol. The bacillus (Escherichia coli,Staphylococcus aureus and Shiga bacillus) and fungus (Rhizopus stolonifer and Aspergillus niger) were chosen in bacteriostasis experiments of alcoholict eluents,and calcium propionate and sodium benzoate were used to be control. The results showed that there was a striking dissimilarity of bacteriostasis between the extracts of alcoholict eluents separated by absorbent resin. The components of SPSL with different polarity had different effect on inhibition of bacillus and fungus.

Key words:  , sweet potato stem and leaf; absorbent resin; bacteriostasis;