反二壬烯醛（Trans-2-nonenal 或 E-2-nonenal，以下简称E2N），通常而言，被描述为纸板味，是老化啤酒里常常会闻到的味道。当然，你可能并不了解纸板味是什么味道，也不知道为什么老化啤酒会产生它。这是啤酒风味的另一个新专题，让我们认识一下E2N。总结来说：所谓的纸板味，也就是E2N，它的确是氧化带来的味...
(E)-2-Nonenal dimethyl acetal物理化学性质 密度 0.9±0.1 g/cm3 沸点 228.2±20.0 °C at 760 mmHg 分子式 C11H22O2 分子量 186.291 闪点 66.2±17.5 °C 精确质量 186.161987 LogP 3.83 蒸汽压 0.1±0.4 mmHg at 25°C 折射率 1.434 (E)-2-Nonenal dimethyl acetal英文别名 (2E)-1,1...
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amost of them have a long history 大多数有一个悠久的历史[translate] aPinocarveol Pinocarveol[translate] a(E)-2-Nonenal (E) -2-Nonenal[translate]
aA year later, the identification, in heated acidified beer, of (E)-2-nonenal, by Jamieson and Van Gheluwe (1970), as the molecule responsible for cardboard flavour, was considered a breakthrough in beer flavour research. 一年后,证明,在激昂的酸化的啤酒, (E) - 2-nonenal,由Jamieson和范...
Although lipid autoxidation in the boiling kettle is a key determinant of the cardboard flavor of aged beers, recent results show that mashing is another significant source of wort nonenal potential, the well-known indicator of how a beer will release (E)-2-nonenal during storage. Although unst...
A one-step procedure is described for the synthesis of (E)-2-nonenal from commercial castor oil by ozonolysis in methanol, followed by reduction of the ozonide products with dimethylsulfide and exposure of the resulting intermediate product to dilute sulfuric acid. The developed process allows the...
epoxy-2-nonenal,(E)-4,5-epoxy-(E)-2-nonenal化学性质 沸点: 256.6±15.0 °C(Predicted) 密度: 1.041±0.06 g/cm3(Predicted) 气味(Odor): metal LogP: 1.633 (est) 安全信息 epoxy-2-nonenal,(E)-4,5-epoxy-(E)-2-nonenal性质、用途与生产工艺 ...
结果显示:(1)黄瓜果实中挥发性物质主要有2E,6Z-壬二烯醛、2(E)-壬烯醛、2E-己烯醛、2,6-壬二烯醇、正己醛、戊醛、2-戊烯醛和3,6-壬二烯醇。补充资料:(E)-壬烯醛 CAS: 18829-56-6 分子式: C9H16O 分子量: 140.22 中文名称: (E)-壬烯醛 英文名称: (E)-2-Nonenal;(E)-2-Nonenal;trans...
(E)-2-nonenal with 2,4-dinitrophenylhydrazine (DNPH) under acidic conditions. The treated beer extract was subjected to separation and concentration steps by means of column and thin-layer chromatography, and finally analy 技术根据啤酒的提取与二氯甲烷,跟随由衍生作用(E) - 2-nonenal与2,4二磷酸...