10 research outputs found
Highly Efficient, Low-Cost, and Simple Protocol for the Preparation of O-(Phenylmethyl)hydroxylamine
No full textA simple, economically convenient, and ecocompatible two-step process for the preparation of
large amounts of the valuable intermediate O-(phenylmethyl)hydroxylamine has been developed,
starting from N-hydroxyphthalimide and (chloromethyl)benzene
Beer bioflavouring by refermentation: a sensorial comparison between bottle conditioned and industrial beers.
No full textShelf-life of beer: alpha and alpha, beta-unsaturated aldehydes determination by SPME on-fiber derivatization and GC/MS in pasteurized and bottled conditioned beers
No full text
Determinazione quantitativa GC/MS di alcune aldeidi lineari a,ß-insature responsabili dell’invecchiamento organolettico della birra industriale, mediante l’impiego della SPME “on-fiber derivatization”. 8° CISETA (Congresso Italiano di Scienza e Tecnologia degli Alimenti), 7-8 maggio 2007, Milano
No full textSensory comparison of the same lager beer stabilized through two different techniques: Pasteurization and bottle conditioning
No full textAn Improved Stereoselective Synthesis of L-Alanosine
No full textAn improved, stereoselective synthesis of the natural, nonproteogenic
amino acid L-alanosine has been developed,
starting from the readily available and cheap substrate L-serine,
in six steps and 49% overall yield. The process is very
efficient, is suitable for large-scale production, and affords Lalanosine
with properties comparable with those of the natural substance. In addition, the structural assignment concerning
some previously reported synthetic alkylated derivatives
of the natural amino acid has been definitively confirmed
Determinazione quantitativa GC/MS mediante SPME “on fiber derivatization” di alcune aldeidi lineari alfa e alfa, beta-insature responsabili dell’invecchiamento organolettico delle birre
No full textSince research has begun on staling compounds, the development of the off-flavour in beer has been attributed mainly to the presence of volatile carbonyl compounds. In this work, a screening of α- and α,β-unsaturated aldehydes using Solid-Phase Micro Extraction (SPME) was carried out using O-(2,3,4,5,6-pentafluorobenzyl)hydroxylamine (PFBHA) as the derivatization agent
