نتایج جستجو برای: vanillin

تعداد نتایج: 1330  

2008
Xiao-Bing Lan Ye-Fei Nan Lin Chen Shi-Xiang Wang Xiao-Hui Zheng

In the title compound, C(12)H(13)NO(5), the azlactone of vanillin, the acrylic acid side chain has a trans extended conformation. There are inter-molecular N-H⋯O and O-H⋯O hydrogen bonds in the crystal structure.

2014
Anil Gupta Jyoti Khatri

Flavonoids tricin, iso-orientin, vanillin, iso-vitexin, apigenin, 8-hydroxy flavones, 4’-hydroxy chalcone have been isolated from leaves of early stage triticum aestivum. Their quantitative analysis has been done through elemental and spectral analysis.

Journal: :Journal of Biotechnology 2021

Current methods for the production of natural vanilla extract are long and tedious, efficiency vanillin extraction is usually conditioned by different factors during traditional curing process (temperatures weather conditions). As an important fraction present in form glucovanillin green beans, endogenous β-glucosidases contribute to its hydrolysis; however, these enzymes lose process. The use ...

2012
K. TABATABAEIAN A. KHORSHIDI A. DADASHI

Synthesis of various potential biologically active compounds from the reaction of quinoline and vanillin based aldehydes and ethereal dialdehydes with indoles in the presence of RuCl3.nH2O as a homogeneous catalyst at room temperature is described.

Gabapentin is an anticonvulsant widely used in the treatment of epilepsy. No peculiar chromophore is available on the gabapentin moiety for direct analysis by absorption spectrophotometry. A sensitive spectrophotometric method for the determination of gabapentin in bulk, pharmaceutical formulations and human plasma has been developed. In this method, gabapentin directly derivatized with vanilli...

Gabapentin is an anticonvulsant widely used in the treatment of epilepsy. No peculiar chromophore is available on the gabapentin moiety for direct analysis by absorption spectrophotometry. A sensitive spectrophotometric method for the determination of gabapentin in bulk, pharmaceutical formulations and human plasma has been developed. In this method, gabapentin directly derivatized with vanilli...

2017
Valery E. Tarabanko Nikolay Tarabanko

This review discusses principal patterns that govern the processes of lignins' catalytic oxidation into vanillin (3-methoxy-4-hydroxybenzaldehyde) and syringaldehyde (3,5-dimethoxy-4-hydroxybenzaldehyde). It examines the influence of lignin and oxidant nature, temperature, mass transfer, and of other factors on the yield of the aldehydes and the process selectivity. The review reveals that prop...

Journal: :Bioscience, biotechnology, and biochemistry 2013
Ji-Young Ryu Jiyoung Seo Sunhwa Park Joong-Hoon Ahn Youhoon Chong Michael J Sadowsky Hor-Gil Hur

The isoeugenol monooxygenase (iem) gene from Pseudomonas nitroreducens Jin1, responsible for the conversion of isoeugenol to vanillin, was cloned and overexpressed in Escherichia coli. The purified Iem had a predicted molecular mass of 54 kDa. The V(max), K(M), and k(cat) values for it, using isoeugenol as substrate, were 4.2 µmol vanillin min(-1) mg(-1) of protein, 120 µM, and 3.8 s(-1), respe...

Journal: :Biotechnology and bioengineering 2006
Hyun-Dong Shin Shara McClendon Tien Le Frank Taylor Rachel Ruizhen Chen

An economic ferulic acid recovery from biomass via biological methods is of interest for a number of reasons. Ferulic acid is a precursor to vanillin synthesis. It is also a known antioxidant with potential food and medical applications. Despite its universal presence in all plant cell wall material, the complex structure of the plant cell wall makes ferulic acid recovery from biomass a challen...

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