• KSBB Journal
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• v.25 no.3
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• pp.244-250
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• 2010

This study characterized the anti-Helicobactor pylori activity of Xanthium strumarium L. extract obtained by lactic acid fermentation. The growth of the Lactobacillus strains was typically robust upon lactic acid production in monocultures containing Xanthium strumarium L. extract. Lactic acid fermentation in mixed cultures of Lactobacillus brevis KCTC 3498 and Lactobacillus casei KCTC 3109 produced higher of anti- H. pylori activity than monocultures. Concerning antioxidant activity of fermented extracts, total polyphenol contents were the highest in co-cultures of Lactobacillus brevis KCTC 3498 and Lactobacillus helveticus KCTC 3545. Electron donating ability using diphenyl picryl hydrazyl (DPPH) showed 70% scavenging in Lactobacillus casei KCTC 3109.

• Korean Journal of Pharmacognosy
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• v.46 no.3
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• pp.208-213
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• 2015

This study was carried out to investigate the biological activities of grass clippings from turfgrass including Zoysia japonica (TG-1), Zoysia matella (TG-2), Agrostis palustris (TG-3), and Poa pratensis (TG-4). The 1,1-diphenyl-2-picrylhydrazyl radical scavenging activity was relatively higher in TG-1 and -2. Especially, TG-1 exerted the strongest hydroxyl radical scavenging effect, showing 90.40% at the concentration of 100 μg/ml. In addition, TG-1 inhibited the growth of Staphylococcus aureus, Escherichia coli and Helicobactor pylori. TG-1 also showed the highest inhibitory effect of AGS human gastric adenocarcinoma cell growth and nitric oxide production against lipopolysaccharide in RAW 264.7 macrophage cells. In conclusion, among the TG extracts, TG-1 has anti-oxidative, anti-microbial, anti-cancer and anti-inflammatory effect, indicating that TG-1 may be the potential source of functional food.