Results 201 to 210 of about 23,375 (241)

Lignin analysis using microwave digestion

Biotechnology Letters, 2012
Lignin quantification in apple pomace residues was carried out using a microwave oven to replace traditional refluxing during the mild acidolysis step to augment the selectivity of this step towards cleavage of lignin-carbohydrate bonds and to reduce the time needed to quantify lignin.
Fatma, Gassara, C M, Ajila, Satinder K, Brar, R D, Tyagi, M, Verma, J R, Valero   +5 more
openaire   +2 more sources

Microwave digestion of proteins

Zeitschrift f�r Lebensmitteluntersuchung und -Forschung A, 1998
The time needed for a conventional acidic digestion of peptide bonds in proteins with 6 N HCl was reduced from 18–24 h to 2 h when microwaves were applied. The rate-determining step of the splitting of the peptide bonds depends on the amino acid composition of the proteins. Myoglobin, lysozyme and bovine serum albumin were tested as pure model proteins.
Kroll, Jürgen, Rawel, Harshadrai Manilal, Kröck, Regina   +2 more
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Inorganic Microwave Digestions Incorporating Bases

Analytical Chemistry, 1994
The use of bases in the microwave digestion of inorganics is discussed. This alternative to typical acid microwave digestions has proven useful in specific cases. The specific examples include the digestion of materials which contained barium aluminate (BaAl 2 O 4 ), cobalt oxide (CoO), molybdenum oxides (MoO 2 and MoO 3 ), thorium oxide (ThO 2 ), and/
Bradley D. Zehr, Judith P. VanKuren, Hugh M. McMahon   +2 more
openaire   +1 more source

Practical options for microwave digestions

TrAC Trends in Analytical Chemistry, 1990
Abstract In this article some options for the use of microwave ovens to facilitate acid digestion of various analytical samples are dicussed. The use of inexpensive domestic ovens in conjunction with commercially available PTFE digestion vessels is highlighted.
Graham M. Kimber, Serge Kokot
openaire   +1 more source

Microwave Digestion of Brewing Materials

Journal of the American Society of Brewing Chemists, 1989
A Teflon high-pressure vessel and concentrated nitric acid were used to digest solid brewing samples in a conventional microwave oven.
openaire   +2 more sources

LONG-TERM STORAGE OF MICROWAVE DIGESTS

Communications in Soil Science and Plant Analysis, 2002
The use of microwave radiation for multi-element digestion of soil and plant materials has become a common procedure in many laboratories due primarily to increased efficiency over other conventional digestion methods. Little information is available, however, on the length of time that microwave digests can be stored prior to analysis, and if there is
Joel A. Crumbaugh, Yash P. Kalra
openaire   +1 more source

Microwave digestion of hardly dissoluble samples

Journal of Radioanalytical and Nuclear Chemistry, 2011
This paper describes a method for digestion of hardly dissoluble samples such as soil, sand, glass fiber and cellulose filters via microwave. The evaluation of this method was conducted by automatic TDCR liquid scintilation counter Hidex 300 SL. The alpha tracer 244Cm was used for the assessment of efficiency.
Janda Jiri, Sladek Petr, Sas Daniel
openaire   +1 more source

Temperature controlled microwave oven digestion system

Analytica Chimica Acta, 1992
Abstract Microwave oven digestion of samples for elemental analysis is becoming a widely used laboratory technique. The employment of sealed pressurized vessels has reduced the time required to place samples into solution. However, the incomplete dissolution of hard to digest materials remains a problem.
D.W. Mincey, R.C. Williams, J.J. Giglio, G.A. Graves, A.J. Pacella   +4 more
openaire   +1 more source