In looking at the chemical properties of the corn silk, I think you might
have been auto suggesting the high...........solo
Quote:
Chemical properties of corn silk and its bactericidal effects on the
growth of Escherichia coli O157:H7
H. J. CHUNG, Food Science and Technology, Chonnam National University,
Kwang-Ju City, S. H. Choi, Food Science & Technology, Chonnam National
University, 300 Yongbong-Dong, Buk-Gu, College of Agric. and Life
science, Gwangju, South Korea, P. M. Davidson, Dept. of Food Science &
Technology, Univ. of Tennessee, 2509 River Dr., 201 Mcleod Food Tech
Bldg., Knoxville, TN 37996-4539, E. S. Ahn, Foods and Nutrition, 300
Yongbong-Dong, Buk-Gu, College of Agric. and Life science, Gwangju,
South Korea, and S. H. Kang, Foods and Nutrition, Chonnam National
University, 300 Yongbong-Dong, Buk-Gu, College of Agric. and Life
science, Gwangju, South Korea.
In 1996, the outbreak of food-borne illness by Escherichia coli O157:H7
in Japan was intensely influenced to strengthen the inspection of the
imported meats in Korea, and also to make every efforts to seek promptly
out an infected person who suffering from diarrhea. The chemical
components of corn silk, which has been used as a diuretic in Chinese
medicine, were analyzed and the antibacterial activity against Escherichia
coli O157:H7 was measured. Fresh corn silk was harvested and dried in a
cabinet dryer at 50C. To investigate the antibacterial activity, dried corn
silk was extracted with water and 50% ethanol, and the extract showed
stronger activity was applied to a model food system. Corn silk was
composed of 84.28% moisture, 5.77% crude protein, 0.92% crude fat,
0.78% crude ash, and 4.48% crude fiber. Seventeen amino acids were
detected and glycine was the highest at 497 mg%. Free sugars were
sucrose, fructose, maltose and glucose. Corn silk contained, minerals
including 131 mg% of K and 55 mg% of Ca. Contents of unsaturated and
saturated fatty acids were 48% and 30.9%, respectively. The strong
activities of the water extract and ethanol extracts were against
Escherichia coli O157:H7. In general the water extract was more effective
than the ethanol extract. The lowest minimum inhibitory concentrations
(MIC) of water and ethanol extracts were at 7.5 mg/disc and 12.5 mg/
disc for Escherichia coli O157:H7, respectively. In a synthesized broth
medium, the growth of test organisms was inhibited with the addition of
5-fold level of MIC. In sterilized milk as a model food system, the length
of lag phase for the growth of test organisms was extended up to three
days at 20C. This result indicated that the growth was strongly
depressed. But, there was no significant difference at 4C.
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.........as read here, http://ift.confex.com/ift/2003/techprogram/
paper_18286.htm
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