At the same time, it was found that NAD(superscript +) was the essential factor for the conversion of vanillin into vanillic acid in vitro.

同時(shí)發(fā)現(xiàn)NAD是從香蘭素到香蘭素酸體外轉(zhuǎn)化必不可少的因素久久亚洲精品无码a∨。

A new process for the preparation of 5-bromo-vanillin with vanillic aldehyde as raw material,AlBr3 as activator,HBr and H2O2 as brominating agent and anhydrous alcohol as solvent was developed in this paper.

摘 要：以甲基香蘭素為原料中文字幕一区2区，氫溴酸與過(guò)氧化氫為溴化劑，溴化鋁為催化劑国产特级黄色操逼毛片，無(wú)水乙醇為溶劑制備5-溴香蘭素快射视频十八禁网站。

To clarify the relationships between phenolic compounds and continuous cropping obstacle of Rehmannia glutinosa, the accumulation amounts of ferulic acid, vanillic acid, vanillin, and β-hydroxybenzoic acid in continuously cropped R. glutinosa soil were measured, and the effects of these four phenolic acids on R. glutinosa growth were studied with water culture.

為了探究酚酸物質(zhì)與地黃連作障礙之間的關(guān)系男同污视频免费在线观看，檢測(cè)了重茬地黃土壤中阿魏酸、香草酸国产一级毛片视频无码网站、香草醛和對(duì)羥基苯甲酸等4種酚酸物質(zhì)的積累量黄色伊人，并通過(guò)水培條件下添加酚酸，研究了4種酚酸對(duì)地黃生長(zhǎng)的影響亚洲毛片av男人的天堂。

The result showed that the contents of p hydroxy benzoic acid,vanillic acid(extracted by 1mol·L -1 NaOH) in continuous cropping soil were significant higher than that in normal cropping soil,and the content of vanillin had no significant difference in these soils.

結(jié)果表明成品直播大全免费观看网站下载，重茬土壤中對(duì)羥基苯甲酸和香草酸的含量(1mol·L-1NaOH提取)大于正茬土壤，且差異達(dá)到極顯著水平日韩医生无码视频播放网站，香草醛含量差異不顯著XXⅩ性欧美视频；重茬大豆根系水提液中對(duì)羥基苯甲酸、香草酸久久久这里只有精品首页、阿魏酸精品无码麻豆AV福利网、香草醛、香豆素含量均高于正茬性欧美首页。

By means of computer-assisted method development technique, a method for the separation and determination of gastrodin, p-hydroxybenzyl alcohol, vanillyl alcohol, p-hydroxylbenzaldehyde and vanillin in extract of Chinese herbal medicine tall gastrodia tuber (Chinese name: Tianma) was established.

中藥的特殊療效源于中藥中的活性組分，活性成分的闡明以及分析方法的研究為控制中藥和中藥制劑的質(zhì)量日韩免费一级视频在线观看，指導(dǎo)合理用藥以及開(kāi)發(fā)新的藥用資源有重要意義激情自拍网一区2区。

Dimethyl carbonate was used as the methylating reagent, o-vanillin as the material and K2CO3 as the catalyzer to synthesize oV. The effect of material ratio, reaction time, reaction temperature and catalyzer dosage on its synthesis reaction was investigated.

方法］采用碳酸二甲酯作為甲基化試劑，以鄰位香蘭素為原料十八大禁黄网，無(wú)水碳酸鉀為催化劑国产一级A片A视频，合成鄰藜蘆醛，研究物料配比人人干摸操日、反應(yīng)時(shí)間熟女屁眼、反應(yīng)溫度和催化劑量對(duì)反應(yīng)的影響。

The research suggested that American white oak is the best choice for the production of grape wine with strong oak aroma and European oak is the best choice for the production of grape wine with harmonious oak aroma, fruit aroma and wine aroma; air drying process of barrel plates would influence the content of total phenol, tannin and volatile substances including vanillin and MOL; and baking intensity will change original content of chemical compositions in oak and make oak barrel possess different aroma characteristics and phenol substance content.

研究表明官方网站夫妻一级黄色录像片子，釀制橡木香較濃郁的葡萄酒選用美國(guó)白櫟較好99久久字幕re6热精品首页，釀造像木香、果香黄色超碰在线、酒香協(xié)調(diào)的葡萄酒則選擇歐洲橡木較適宜黄片视频欧美大全；板材風(fēng)干過(guò)程對(duì)橡木板材中的總酚、單寧含量及揮發(fā)性香氣物質(zhì)香蘭素和橡木內(nèi)酯的含量均有影響黄色性爱网址；烘烤強(qiáng)度可改變橡木木材原有的化學(xué)組分含量免费在线观看黄片小视频，使橡木桶具有不同的呈香特性和酚類(lèi)物質(zhì)含量。

The research suggested that American white oak is the best choice for the production of grape wine with strong oak aroma and European oak is the best choice for the production of grape wine with harmonious oak aroma, fruit aroma and wine aroma; air drying process of barrel plates would influence the content of total phenol, tannin and volatile substances including vanillin and MOL; and baking intensity will change original content of chemical compositions in oak and make oak barrel possess different aroma characteristics and phenol substance content.

研究表明91精品视頻在线，釀制橡木香較濃郁的葡萄酒選用美國(guó)白櫟較好国产精品黄网在线观看，釀造橡木香、果香亚洲一级二级黄片a国、酒香協(xié)調(diào)的葡萄酒則選擇歐洲橡木較適宜毛片大全視頻看看吧；板材風(fēng)干過(guò)程對(duì)橡木板材中的總酚人人爽人人干人人操人人、單寧含量及揮發(fā)性香氣物質(zhì)香蘭素和橡木內(nèi)酯的含量均有影響；烘烤強(qiáng)度可改變橡木木材原有的化學(xué)組分含量中文字幕37页，使橡木桶具有不同的呈香特性和酚類(lèi)物質(zhì)含量一区二区三区免费视频在线播放。

The wine displays lovely rich, soft dark berry flavours with hints of cinnamon, subtle vanillin oak and soft fine tannins.

該酒入口豐滿柔和，帶有黑漿果黄色电影网址入口、肉桂性色AV网站免费、與一絲香草橡木桶的自然風(fēng)味，單寧柔順重口变态另类。

The preparation of vanillin with clove oil as the substrate and soybean lipoxygenase as the bio-catalyst has been carried out in a silicon rubber membrane bioreactor.

在硅橡膠膜生物反應(yīng)器系統(tǒng)中用丁香油為原料和大豆酯氧化酶為催化劑偷偷自拍亚洲色图，進(jìn)行了生物轉(zhuǎn)化制備香草醛的實(shí)驗(yàn)研究。