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Filtering by: Alternative title ssim EC 1468-S Academic Affiliation Food Science and Technology Decade 1980-1989

Alteration in levels and synthesis of proteins in trout hepatocytes due to dietary cyclopropenoid fatty acid[s]

Creator:

Perdew, Gary H.

Abstract:

Cyclopropenoid fatty acids (CPFA) are unique compounds that contain a highly strained and reactive cyclopropene ring structure. These compounds have been shown to cause a number of toxic effects in a variety of animals. Rainbow trout (Salmo gairdneri) have proven to be particularly sensitive to CPFA. Studies have revealed that...

Resource Type:

Dissertation

Full Text:

CPFA are both carcinogenic and cocarcinogenic in rainbow trout. However, the mechanism(s) of these
Inhibition of Escherichia coli trimethylamine-N-oxide reductase by food preservatives

Creator:

Kruk, Mark W.

Abstract:

Trimethylamine-N-oxide (TMA-0) reductase activity of resting cells of Escherichia coli was inhibited by tetrasodium ethylenediaminetetraacetate (Na₄EDTA), benzoic acid (BA), and methylparaben (MP). The 50% inhibitory concentrations of Na₄EDTA, BA, and MP were 20.2, 1.2, and 32.4 mM, respectively. BA at pH 6.5 or below most effectively inhibited the TMA-0 reductase....

Resource Type:

Masters Thesis

Full Text:

reduced microbial growth. 0.5 - 0) 4-> o S- Q. Ol E 0.4 - 3 ■!-> O eC

Microorganisms isolated from sand filtered bay water and the proteolytic activity of a flavobacterium isolate

Creator:: Canhos, Vanderlei Perez
Resource Type:: Dissertation
Full Text:: Activity of ylflavobacterium Isolate. Abstract APPROVED: _ / Dr. J. S. LeeN =~" Monthly samples of

The significance of glutathione conjugation for aflatoxin B₁ metabolism in rainbow trout and coho salmon

Creator:: Valsta, Liisa M.
Abstract:: In rodent models as well as in fish models there are significant species differences in the susceptibility toward aflatoxin B₁ (AFB₁) carcinogenesis. Mouse is less susceptible toward AFB₁ carcinogenesis than rat. Researchers have come to the conclusion that the lower susceptibility of mice is not a result of less effective...
Resource Type:: Masters Thesis
Full Text:: -2-(S-glutathionyl)-3-hydroxyaflatox1n Bj) (Degen and Neumann 1978,1981). Epoxide hydrase is

Development of analytical methodology for verification of authenticity of apple juice

Creator:: Lee, Hyoung S.
Abstract:: Apples growing in New Zealand, Argentina, Mexico, Michigan and Washington were used to provide the compositional data and to develop the analytical procedures for the use in verification of authenticity of apple juices. High Performance Liquid Chromatography (HPLC) techniques were applied for glucose, fructose, sucrose, sorbitol, malic, citric, quinic, shikimic,...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE THESIS OF Hyoung S. Lee for the degree of

Purification of strawberry polyphenol oxidase and its role in anthocyanin degradation

Creator:: Wesche-Ebeling, Pedro Alfredo E.
Abstract:: Polyphenol oxidase (PPO) from strawberries was purified, partially characterized, and used to study its role in the degradation of anthocyanin pigments. The extraction method included the use of a buffered solution containing the phenolic binders Polyclar AT and Amberlite XAD-4. Addition of Triton X-100 resulted in an increase of the...
Resource Type:: Dissertation
Full Text:: molecular weight of 111,000 by gel filtration on Sephacryl S-300. Form Fl eluted in the void volume of an

Formation of N-nitrosodimethylamine and nonvolatile N-nitrosamines from barley malt alkaloids

Creator:: Mangino, Mario M.
Abstract:: Amines formed by biosynthesis in germinated barley have been suggested as precursors for N-nitrosodimethylamine (NDMA) in barley malt dried by direct-fired kilning. This hypothesis was verified by germinating raw barley and exposing the resulting malt roots and clean malt to nitrous acid. Quantitation of the NDMA formed indicated that malt...
Resource Type:: Dissertation
Full Text:: hordenine was 5200:1. N-Methyltyramine and N-methyl-S-aminomethylindole, the immedi- ate biosynthetic

Purification and properties of d'Anjou pear (Pyrus communis, L.) polyphenol oxidase

Creator:: Wissemann, Kimberly Warner
Abstract:: Polyphenol oxidase (PPO) from d'Anjou pears was purified and some molecular properties were studied. The extraction of PPO was accomplished in the presence of the phenolic binder AG 2X-8 and Triton X-100. Chlorophyll pigment was removed by chromatography resulting in a clear, colorless enzyme extract. Three fractions of pear PPO...
Resource Type:: Dissertation
Full Text:: were similar and were 45,300 ± 5% daltons by Sephacryl S-300 gel filtration and 59,600 ± 3% daltons

Characterization of substrate-velocity relationships for the cellulase enzyme complex from Trichoderma viride

Creator:: Liaw, Ean-Tun
Abstract:: The influence of substrate and enzyme concentration on the rate of saccharification of two defined, insoluble, cellulose substrates, Avicel and Solka-Floc, by the cellulase enzyme system of Trichoderma viride has been evaluated. Assays utilized enzyme concentrations ranging from 0.014 to 0.056 filter paper unit per mL and substrate concentrations up...
Resource Type:: Masters Thesis
Full Text:: glucanohydrolase (endoglucanase; EC 3.2.1.4), the P-l^-D-glucan cellobiohydrolase (exoglucanase; EC 3.2.1.91) and

Frameshift mutagenicity of flavonol glycosides activated by human fecalase enzyme

Creator:: Dardiri, Moawia Mohamed
Abstract:: Many substances in the plant kingdom and in man's diet occur as glycosides. Recent studies have indicated that many glycosides that are not mutagenic in tests such as the Salmonella/microsome test become mutagenic upon hydrolysis of the glycosidic linkages. The Salmonella/microsome test utilizes a liver homogenate to approximate mammalian metabolism...
Resource Type:: Dissertation
Full Text:: 24 Induction of Rat and Preparation of Liver Homogenate Fraction "S-9" 25 Mutagenicity Assays

ScholarsArchive@OSU

Alteration in levels and synthesis of proteins in trout hepatocytes due to dietary cyclopropenoid fatty acid[s]

Inhibition of Escherichia coli trimethylamine-N-oxide reductase by food preservatives

Microorganisms isolated from sand filtered bay water and the proteolytic activity of a flavobacterium isolate

The significance of glutathione conjugation for aflatoxin B₁ metabolism in rainbow trout and coho salmon

Development of analytical methodology for verification of authenticity of apple juice

Purification of strawberry polyphenol oxidase and its role in anthocyanin degradation

Formation of N-nitrosodimethylamine and nonvolatile N-nitrosamines from barley malt alkaloids

Purification and properties of d'Anjou pear (Pyrus communis, L.) polyphenol oxidase

Characterization of substrate-velocity relationships for the cellulase enzyme complex from Trichoderma viride

Frameshift mutagenicity of flavonol glycosides activated by human fecalase enzyme

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