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        검색결과 2

        1.
        2020.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This study examined the bioactive compound content and the antioxidant activities of bitter melon (Momordica charantia Linn.) leaves. The content of vitamin C, beta-carotene, and total carotenoids was 69.77, 45.68, and 65.08 mg/100 g, respectively. To investigate the antioxidant capacity, bitter melon leaves were extracted using various concentrations of ethanol (60, 80, or 100%). Highest content of total polyphenols (18.07 mg gallic acid equivalent/g) and flavonoids (4.53 mg cathechin equivalent/g) was found in the 100% ethanolic extract of the leaves (E100). Also, the E100 extract showed the highest levels of 2,2'azino-bis-3-ethylbenzothiazoline-6-sulfonic acid (ABTS) and α-α-diphenyl-β-picrylhydrazyl (DPPH) free radical scavenging activities. Reducing power was also the highest (39.21 mg Trolox equivalent/g) in E100 extract. The E100 extract effectively inhibited lipid peroxidation by 91.45% compared to the control group. Also, the E100 extract showed a cytoprotective effect against oxidative stress in HepG2 cells and decreased the generation of intracellular reactive oxygen species. These results suggest that bitter melon leaves could be regarded as a potential source of natural antioxidants.
        4,000원
        2.
        2019.02 KCI 등재 구독 인증기관 무료, 개인회원 유료
        In this study, the contents of water-soluble vitamins B1 (thiamin), B2 (riboflavin), B3 (niacin), and B12 (cyanocobalamin) in namuls (wild greens), such as salads and side dishes, consumed in Korea were quantified by high-performance liquid chromatography (HPLC) with UV and fluorescence detection. All samples were prepared with recipes used in Korea. All analyses were performed under the quality control of vitamin B1, B2, B3, and B12. The vitamin B1, B2, and B3 contents in namuls consumed in Korea were analyzed. The highest content of vitamin B1 was 3.018±0.016 mg/100 g in Putgochudoenjang- muchim. The highest contents of vitamin B2, B3, and B12 were 0.279±0.003 mg/100 g in Gul-muchim, 12.241± 0.040 mg/100 g in Chamchi-salad, and 8.133±0.371 μg/100 g in Pijogae-muchim, respectively. These results showed that animal-based ingredients in salads provided for good intake of vitamin B12. These results can be used as basic data for food composition tables and improvement of the national health of Koreans.
        4,000원