Park Mihye, Kim Meera
Department of Food Science and Nutrition, Kyungpook National University, Daegu 41566, Korea.
Prev Nutr Food Sci. 2017 Dec;22(4):365-371. doi: 10.3746/pnf.2017.22.4.365. Epub 2017 Dec 31.
In this study, the crude ethanol cultivated with mycelium (RNGM) extract was solvent fractionated with organic solvents such as -hexane, chloroform, ethyl acetate, and water. The anticancer activities, anti-inflammatory activity total polyphenols, total flavonoids, isoflavones, and β-glucan of the solvent fractions of RNGM were studied. The ethyl acetate fraction showed the highest 2,2-diphenyl-1-picrylhydrazyl scavenging activity of 76.60% at 800 μg/mL. The ethyl acetate fraction also showed higher antioxidant activity in 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) and ferric reducing ability of plasma assays compared to the other fractions. In addition, this study confirmed that the ethyl acetate fraction strongly inhibited nitric oxide production. The ethyl acetate fraction had the highest amount of total polyphenol and total flavonoid (65.33 mg gallic acid equivalent/g and 18.50 mg quercetin equivalent/g, respectively). The ethyl acetate fraction (13.02%) showed the highest amount of total β-glucan, followed by the water (6.32%), chloroform (1.43%), and -hexane fraction (0.85%). Therefore, it is suggested that the ethyl acetate fraction of cultivated with mycelium may be potential natural sources for nutritional and pharmaceutical applications.
在本研究中,用菌丝体培养的粗乙醇提取物(RNGM)用有机溶剂如正己烷、氯仿、乙酸乙酯和水进行溶剂分级分离。研究了RNGM溶剂级分的抗癌活性、抗炎活性、总多酚、总黄酮、异黄酮和β-葡聚糖。乙酸乙酯级分在800μg/mL时表现出最高的2,2-二苯基-1-苦基肼清除活性,为76.60%。与其他级分相比,乙酸乙酯级分在2,2'-联氮-双(3-乙基苯并噻唑啉-6-磺酸)和血浆铁还原能力测定中也表现出较高的抗氧化活性。此外,本研究证实乙酸乙酯级分强烈抑制一氧化氮的产生。乙酸乙酯级分的总多酚和总黄酮含量最高(分别为65.33mg没食子酸当量/g和18.50mg槲皮素当量/g)。乙酸乙酯级分(13.02%)的总β-葡聚糖含量最高,其次是水(6.32%)、氯仿(1.43%)和正己烷级分(0.85%)。因此,建议用菌丝体培养的乙酸乙酯级分可能是营养和制药应用的潜在天然来源。