HOT PRESSURIZED WATER EXTRACTIONS OF FREE RADICAL SCAVENGING COMPOUNDS FROM TAIWAN 'DIOSCOREA ALATA'

机译：台湾“ Dioscorea Alata”自由基清除化合物的热压水提取

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This study investigated the scavenging-activity on the 1, 1-diphenyl-2-picryl-hydrazyl (DPPH) free radicals by the extracts of both meet and peel portions of three Taiwan Dioscorea alata (Yams), individually. The EC_(50) value, defined as the concentrations of free radical scavenging compounds sufficiently decreased DPPH absorption down to 50% of the original level, was detected for each extract. Our results found that all peel portions have better effect on scavenging DPPH free radical activity than meat portions, especially from the ethyl acetate partition of the Tainung #2 Yam. Its EC_(50) value (14.5 μg/ml) was even lower than that of ascorbic acid (21.4 μg/ml) used as the reference antioxidant. Furthermore, a few semi-continuous hot pressurized water extractions showed positive results to extract the scavenging-activity compounds out from the Taiwan yams. The saturated extraction condition was found at 120℃ and 300 psig, when 10 mL/min water flow rate used to extract 70 gram solid peels.

机译：这项研究调查了三种台湾薯os（山药）的相遇和剥离部分的提取物对1，1-二苯基-2-吡啶基-肼基（DPPH）自由基的清除活性。对每种提取物检测到EC_（50）值，定义为自由基清除化合物的浓度，该浓度足以将DPPH吸收降低至原始水平的50％。我们的结果发现，所有的果皮部分都比肉类部分具有更好的清除DPPH自由基活性的效果，尤其是从泰农2号山药的乙酸乙酯分配中。其EC_（50）值（14.5μg/ ml）甚至比用作参考抗氧化剂的抗坏血酸（21.4μg/ ml）还要低。此外，一些半连续的热压水提取显示出从台湾山药中提取清除活性化合物的积极结果。当以10 mL / min的水流速提取70克固体果皮时，饱和提取条件为120℃和300 psig。

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《International Symposium on Supercritical Fluids Tome 1: Natural Products, Process amp; Equipment Development; 20030428-20030430; Versailles; FR》|2003年|P.17-22|共6页
会议地点 Versailles(FR)
作者
Chang; Chieh-Ming J.; Chen; Po-Yen; Tu; Yu-Xun;
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Department of Chemical Engineering, National Chung Hsing University, #250 KuoKuang Road, Taichung, Taiwan 402, ROC;

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正文语种 eng
中图分类凝聚状态与相变;
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1. Comprehensive characterization of yam tuber nutrition and medicinal quality of Dioscorea opposita and D.alata from different geographic groups in China [J] . SHAN Nan, WANG Pu-tao, ZHU Qiang-long, 农业科学学报：英文版 . 2020,第011期
2. Comprehensive characterization of yam tuber nutrition and medicinal quality of Dioscorea opposita and D. alata from different geographic groups in China [J] . SHAN Nan, ZHOU Qing-hong, WANG Pu-tao, 农业科学学报（英文版） . 2020,第011期
3. Application of Prochloraz-nano-titanium Dioxide Complex Fresh-keeping Agent in Refrigeration of Dioscorea alata Lirm. sp. [J] . Dongdi XIE, Yanpei WEI, Xiaoping WEI, 亚洲农业研究：英文版 . 2018,第010期
4. Continuous Hot Pressurized Solvent Extraction of 1,1-Diphenyl-2-picrylhydrazyl Free Radical Scavenging Compounds from Taiwan Yams (Dioscorea alata) [J] . Po-Yen Chen, Yu-Xun Tu, Cheng-Tar Wu, Journal of Agricultural and Food Chemistry . 2004,第7期

机译：台湾山药（Dioscorea alata）1,1-二苯基-2-吡啶并肼基自由基清除化合物的连续热压萃取
5. Phenolic Content and Radical Scavenging Capacity of Kaffir Lime Fruit Peel Extracts Obtained by Pressurized Hot Water Extraction [J] . Pramote Khuwijitjaru, Kulthida Chalooddong, Shuji Adachi Food science and technology research . 2008,第1期

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6. Pressurized liquid extraction of phenolic compounds from Anatolia propolis and their radical scavenging capacities. [J] . Erdogan S, Ates B, Durmaz G, Food and Chemical Toxicology: An International Journal Published for the British Industrial Biological Research . 2011,第7期

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7. Pressurized Hot Water Extraction of Phenolic Compounds and Their Analysis by GC-MS and CZE [C] . Juhani Kronholm, Patricia Revilla-Ruiz, Simo P. Porras, Italian Conference on Chemical and Process Engineering . 2003

机译：GC-MS和CZE的加压热水提取酚类化合物及其分析
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机译：加压热水萃取天然产物，包括水飞蓟素中的水飞蓟素和西洋参中的皂苷，随后使用快速离心分配色谱法进行分离，并通过高效液相色谱法进行验证。
9. Data showing the optimal conditions of pre-extraction and extraction of Citrullus lanatus (watermelon) white rind to increase the amount of bioactive compounds DPPH radical scavenging and anti-tyrosinase activity [O] . Maryam Baeeri, Parisa Sarkhail, Ghazal Hashemi, 2018

机译：数据显示预先提取和提取柑桔（西瓜）白皮以增加生物活性化合物DPPH自由基清除和抗酪氨酸酶活性的最佳条件

HOT PRESSURIZED WATER EXTRACTIONS OF FREE RADICAL SCAVENGING COMPOUNDS FROM TAIWAN 'DIOSCOREA ALATA'

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