نتایج جستجو برای: strecker
تعداد نتایج: 288 فیلتر نتایج به سال:
1. McGinty D, Szymusiak R. Keeping cool: a hypothesis about the mechanisms and functions of slow-wave sleep. Trends Neurosci 1990;13:480-7. 2. Basheer R, Strecker RE, Thakkar MM, McCarley RW. Adenosine and sleep-wake regulation. Prog Neurobiol 2004;73:379-96. 3. Porkka-Heiskanen T, Strecker RE, Thakkar M, Bjorkum AA, Greene RW, McCarley RW. Adenosine: a mediator of the sleep-inducing effects of...
The rancidity of rice bran is predominantly triggered by lipophilic enzyme activities. Bran stabilisation and defatting are the typical processes to inactivate that cause rancidity. However, little known about how this impacts development volatile compounds related odour in bran. effects post-milling process on secondary oxidation during storage were investigated. Based identified metabolites, ...
A general asymmetric Strecker-type reaction is reported, catalyzed by the Lewis acid-Lewis base bifunctional catalyst 1. The reaction of trimethylsilyl cyanide (TMSCN) with various fluorenyl imines, including n-aldimines and alpha,beta-unsaturated imines, proceeds with good to excellent enantioselectivities in the presence of a catalytic amount of phenol as additive (20 mol%) (catalytic system ...
D URING the summer of 1950 a number of living specimens were collected during studies on temperature regulation in Alaskan mamma1s.l These animals were brought back to Wisconsin and maintained in captivity, a number being still alive more than two years after capture. Since an adequate diet is often essential for successful maintenance, some systematic observations on food preference in terms o...
Despite decades of extensive research, beer flavour instability remains a challenge for both brewing and malting industries. Malt impacts the process as well quality final beer. It also affects stability flavour, it delivers to various compounds with potential compromise desired characteristics These include staling aldehydes their precursors, such amino acids, reducing sugars, α-dicarbonyls bo...
The conversion of rac -phenylglycinonitrile by different variants the nitrilase from Pseudomonas fluorescens EBC191 (EC 3.5.5.1) was studied and amounts chiral composition formed phenylglycine amide compared. Muteins that converted to extraordinarily high or were tested for chemoenzymatic enantioselective one-pot synthesis ( R )- S )-phenylglycine amide. combined initial step in traditional che...
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