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Determination of selected secondary and tertiary amine alkaloids in barley malt

Creator:: Poocharoen, Boonthong
Abstract:: The malt alkaloids N-methyltyramine, N,N-dimethyltyramine (hordenine), N-methyl-3-aminomethylindole and N,N-dimethyl-3-aminomethylindole (gramine) are known precursors for N-nitrosamines. Analytical procedures were developed and applied to extract and quantify these alkaloids from malt, green malt, malt roots, and raw barley. A ground malt sample under nitrogen atmosphere was extracted with 5 percent concentrated ammonium...
Resource Type:: Dissertation
Full Text:: , if not the sole source of NDMA in beer. E. Precursors of NDMA in Malt Mangino et al. (1981

The frequency of occurrence of corticolous lichens on Quercus garryana in the Willamette Valley

Creator:: Saxton, Robert Howard
Abstract:: This study was made to present any evidence as to differences in the frequency of occurrence of corticolous lichens from east to west in the Willamette Valley on a bark substrate of Quercus Garryana. Twenty-four species of lichens were observed to be present within the grid area of the 100...
Resource Type:: Masters Thesis
Full Text:: _ - .tiJY Y 4-et, C ,o ' +'° `.. , - - ry 3 n i Pt " e^ - : i. `Jt :,° a 25,47 il ' .*,,.H } .1

Studies on control of diacetyl off-flavor in beer

Creator:: Tolls, Terry Norman
Abstract:: Sporadic outbreaks of diacetyl off-flavor in beer are a serious economic problem to the brewing industry. Studies were carried out in an attempt to improve the understanding of the problem and to experiment with new ways of controlling this defect. The Owades and Jakovac method of diacetyl determination as modified...
Resource Type:: Masters Thesis
Full Text:: some beers loweredupon standing. They went on to say that since normal bottled beer was a reducing

An enzymatic method for the removal of diacetyl from fermented beverages

Creator:: Whinery, Janet
Abstract:: The presence of diacetyl in sufficient concentrations to cause off-flavor in beer is a serious economic problem affecting the brewing industry. Research was carried out in an attempt to provide an industrially acceptable method for reducing diacetyl to safe levels in beer, with additional applications to frozen concentrated orange juice,...
Resource Type:: Masters Thesis
Full Text:: . W. E. Sandine The presence of diacetyl in sufficient concentrations to cause off-flavor in beer is

Foam enhancing properties of hop bitter acids and propylene glycol alginate

Creator:: Kunimune, Takeshi
Abstract:: The following two projects have been carried out to clarify the impact of these foam stabilizers, and to compare their foam stabilizing power to one another as well as the cling ability. The first project investigated the impacts of four commercially available hop- derived foam stabilizers; iso-alpha-acid (Iso), rho(dyhydro)-iso-alpha-acid (Rho),...
Resource Type:: Masters Thesis
Full Text:: beer, the cling might be visually even more important than the head, particularly with draught beers

Chemical control : Aphis pomi and Aphis spiraecola, apple - test of registered aphicides, 1993

Creator:: Beers, Elizabeth H.
Resource Type:: Conference Proceeding
Full Text:: andAphis spiraecola, apple Elizabeth H. Beers WSU Tree Fruit Research & Extension Center 1100 N. Western

Evidence for resistance to Agri-Mek in twospotted spider mite (Tetranychus urticae) populations from pear orchards in Washington

Creator:: Beers, Elizabeth H.
Resource Type:: Conference Proceeding
Full Text:: . Twospotted spider mite, European red mite, apple, pear Elizabeth H. Beers Tree Fruit Research & Extension

Chemical control : white apple leafhopper, apple

Creator:: Beers, Elizabeth H.
Resource Type:: Conference Proceeding
Full Text:: leafhopper, apple Elizabeth H. Beers Washington State University Tree Fruit Research & Extension Center 1100

Effect of one-tenth field rates of asana applied at various times during the season on Typhlodromus occidentalis

Creator:: Beers, Elizabeth H.
Resource Type:: Conference Proceeding
Full Text:: occidentalis on apple Elizabeth H. Beers Tree Fruit Research & Extension Center Washington State University

Evidence for reversion to susceptibility to Vendex in twospotted spider mite (Tetranychus urticae) populations from pear orchards in Washington

Creator:: Beers, Elizabeth H.
Resource Type:: Conference Proceeding
Full Text:: . Twospotted spider mite, apple, pear Elizabeth H. Beers Tree Fruit Research & Extension Center 1100 N

ScholarsArchive@OSU

Determination of selected secondary and tertiary amine alkaloids in barley malt

The frequency of occurrence of corticolous lichens on Quercus garryana in the Willamette Valley

Studies on control of diacetyl off-flavor in beer

An enzymatic method for the removal of diacetyl from fermented beverages

Foam enhancing properties of hop bitter acids and propylene glycol alginate

Chemical control : Aphis pomi and Aphis spiraecola, apple - test of registered aphicides, 1993

Evidence for resistance to Agri-Mek in twospotted spider mite (Tetranychus urticae) populations from pear orchards in Washington

Chemical control : white apple leafhopper, apple

Effect of one-tenth field rates of asana applied at various times during the season on Typhlodromus occidentalis

Evidence for reversion to susceptibility to Vendex in twospotted spider mite (Tetranychus urticae) populations from pear orchards in Washington

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