• Biomolecules & Therapeutics
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• 제23권1호
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• pp.90-97
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• 2015

Water chestnut (Trapa japonica Flerov.) is an annual aquatic plant. In the present study, we showed that the treatment of water chestnut extracted with boiling water resulted in a significant increase 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical-scavenging activity and decrease the intracellular $H_2O_2$-induced accumulation of reactive oxygen species. In addition, water chestnut extract (WCE) inhibited lipopolysaccharide (LPS)-induced nitric oxide production and suppressed mRNA and protein expression of the inducible nitric oxide synthase gene. The cytokine array results showed that WCE inhibited inflammatory cytokine secretion. Also, WCE reduced tumor necrosis factor-${\alpha}$- and interleukin-6-induced nuclear factor-${\kappa}B$ activity. Furthermore, during sodium lauryl sulfate (SLS)-induced irritation of human skin, WCE reduced SLS-induced skin erythema and improved barrier regeneration. These results indicate that WCE may be a promising topical anti-inflammatory agent.

• Food Science and Biotechnology
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• 제18권3호
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• pp.808-812
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• 2009

The ${\alpha}-glucosidase$ inhibitory and antioxidant effects of water chestnut (Trapa japonica Flerov.) were assessed to explore its possible use as an anti-diabetic agent. Methanol extracts of the fruit shell and meat of water chestnut were assayed for inhibitory activity against yeast ${\alpha}-glucosidase$ and 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activity. Effect of fruit shell extract on postprandial glucose response was assessed. Compared with fruit meat, shell extract showed stronger inhibition against ${\alpha}-glucosidase$ with an $IC_{50}$ of 273 ${\mu}g/mL$. Oral administration of fruit shell extract (500 mg/kg) significantly lowered the postprandial area under the glucose response curve to starch (1 g/kg) in streptozotocin (STZ)-induced diabetic rats (p<0.01). Compared with fruit meat, shell extract showed stronger scavenging activity against DPPH, with an $IC_{50}$ of 27.1 ${\mu}g/mL$. The results indicate that the fruit shell of water chestnut was effective in controlling postprandial hyperglycemia and exerted an antioxidant effect. Therefore, water chestnut may be useful in treating diabetes.

• 대한지역사회영양학회:학술대회논문집
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• 대한지역사회영양학회 2005년도 춘계학술대회
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• pp.182-182
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• 2005

• 대한지역사회영양학회:학술대회논문집
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• 대한지역사회영양학회 2005년도 춘계학술대회
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• pp.184-184
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• 2005

• 한국영양학회:학술대회논문집
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• 한국영양학회 2004년도 춘계학술대회
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• pp.195-195
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• 2004

• 대한지역사회영양학회:학술대회논문집
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• 대한지역사회영양학회 2005년도 춘계학술대회
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• pp.181-181
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• 2005

• 대한화장품학회지
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• 제49권4호
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• pp.307-312
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• 2023

본 연구에서는 국내에서 자생하고 있는 Trapa natans var. bispinosa 열매인 마름(water chestnut)의 anti-pigmentation 효능을 확인하였다. 마우스 유래 melanocytes인 B16F10세포에 마름 70% 에탄올 추출물을 처리하여 멜라닌의 생성량을 확인한 결과 200 ㎍/mL 추출물을 처리시 100 ng/mL α-MSH를 처리한 대조군 (100%) 대비 43.26%로 멜라닌생성억제를 확인하였다. 또한 멜라닌합성에 주요한 단백질인 tyrosinase의 활성 및 발현을 100 ng/mL α-MSH를 처리한 대조군(100%) 대비 tyrosinase의 활성은 23.65%, tyrosinase의 발현은 62.35%로 억제됨을 확인하였다. 본 연구결과를 통해 마름 70% 에탄올 추출물은 α-MSH에 의한 melanin 생성을 방지하여 미백 기능성 소재로써 가치가 있는 것으로 사료된다.