Functional Properties of Water Extract from the Residue of Jelly Fig (Ficus awkeotsang Makino) Achenes
Date Issued
2008
Date
2008
Author(s)
Lai, Ying-Jang
Abstract
The aim of this study is to investigate the functions of water extracts from the residue of jelly fig seeds (WERJFS), including antioxidant activity and the inhibition of food-borne pathogens and bacterial phytopathogens.he residue of jelly fig achenes was extracted with distilled water, precipitated with ammonium sulfate at 100% saturation, and run through a DEAE-Sephacel anion exchange column. The PEI was retained in the column presumably through some kind of molecular interaction. In addition, the result of the addition of excess polyvinyl polypyrrolidone (PVPP), BSA or heated and/or unheated trypsin showed that the PEI is not just a protein. he WERJFS was found to inhibit the growth of Escherichia coli O157:H7 and Bacillus cereus effectively. The DPPH free radical scavenging ability and reduction capacity of WERJFS at a concentration of 150 μg/mL or higher was better than those of α-tocopherol and BHA at the same concentration. The ferrous ion chelating activity of WERJFS was higher than that of citric acid. However, the antioxidant activity, the superoxide anions radical scavenging activity and the hydrogen peroxide scavenging activity of WERJFS were inferior to those of BHA. The WERJFS showed no mutagenicity in the Ames test.he WERJFS was found to inhibit the growth and the PL activity of Erwinia species (BCRC 13137 and BCRC 12613), which are important bacterial phytopathogen to cause soft rot on many plant hosts. n general, WERJFS can be a material to be developed into an additive from natural source to extend the shelf-life of food, to inhibit the growth of foodborne pathogenic bacteria, and to protect plants against bacterial soft rot disease.
Subjects
jelly fig achenes
PE inhibitor (PEI)
antioxidant activity
Ames test
soft rot
PL activity
Type
thesis
File(s)![Thumbnail Image]()
Loading...
Name
ntu-97-D91641006-1.pdf
Size
23.53 KB
Format
Adobe PDF
Checksum
(MD5):bbe6bb8ae43519cebbef9a852d17bf5d